CN102983868B - Signal processing method and signal processing device and signal processing system - Google Patents
Signal processing method and signal processing device and signal processing system Download PDFInfo
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Abstract
The invention provides a signal processing method, a signal processing device and a signal processing system. The signal processing method, the signal processing device and the signal processing system include that a headphone can send digital audio signals to a mobile terminal, and the mobile terminal can also send the digital audio signals to the headphone. Since the signals transmitted between the headphone and the mobile terminal are digital signals, the opportunities that noise enters signals of global system for mobile communications (GSM) are greatly reduced, and the probability of occurrence of the noise on a telecommunications device for the deaf (TDD) is reduced. Meanwhile, without the need of arranging an electromagnetic interference device (EMI) on a main board of the mobile terminal, the area occupied by the layout of a printed circuit board (PCB) can be reduced, and the arrangement complexity of the PCB is lowered; and the PCB does not need to be protected strictly in the arrangement process so that the arrangement difficulty of the PCB can be lowered.
Description
Technical field
The present invention relates to the communications field, particularly relate to signal processing method, Apparatus and system.
Background technology
Time-division distortion (TDD, Time Division Distortion) noise (noise) is a kind of common mobile terminal noise.Its Producing reason is, hold at the power amplifier (PowerAmplify) of mobile terminal radio frequency transmitter module with every 1/216.8 second, namely, when the frequency of 216.8Hz launches global system for mobile communications (GSM) signal (service band of GSM signal can comprise 900MHz, 1800MHz or 1900MHz), envelope (envelope) noise can be produced.Auditory frequency range due to the ear of people is 20Hz ~ 20KHz, and PA launch time produce envelope (envelope) noise be 216.8Hz, the frequency of this noise has dropped on the scope that people's ear can be heard, therefore the circuit in the middle of the earphone connected when mobile terminal allows because design is bad the words that noise has an opportunity to scurry into, just can hear drone noise at earphone end, this noise is TDDnoise.
Audio signal transmission between the earphone that mobile terminal is connected with mobile terminal, is divided into uplink to transmit from signal path and downlink transmits two kinds.Uplink transmission refers to that voice are converted into the signal of telecommunication at earphone Mike end, and this signal of telecommunication arrives the decoder (codec) of system end (mobile terminal) through path; Downlink transmission is just in time contrary, refers to the decoder of audio analog signals from system end, arrives the left and right acoustic channels of earphone through path.
The audio signal of traditional up-downgoing tunnel is all analog signal; the method that analog signal eliminates TDDnoise is generally as shown in Figure 1; add proprietary electromagnetic interference (EMI) protection component on the line; and add low-capacitance electric capacity on the line; its principle is the interference of filtering GSM signal on the line; make its interference signal arrive earphone, people's ear also would not hear TDD noise.
When adopting said method to eliminate TDD noise; need to carry out strict protection when printed circuit board (PCB) (PCB) layout (layout); general ground DNA mitochondrial DNA isolation audio signal; namely ground wire all to be had up and down to surround in audio signal; concrete layout schematic diagram can be as shown in Figure 2; wherein ground wire blank box represents; the frame table of L channel with left-hand oblique line shows; the frame table of R channel with dextrad oblique line shows; Mike just shows with the frame table with vertical oblique line, and Mike bears and shows with the frame table with horizontal oblique line.
Following problem is at least there is in said method when eliminating TDD noise:
EMI device (comprise EMI protection component (as; EMI filter) and low-capacitance electric capacity) cannot radiofrequency signal interference (envelope noise) on the whole circuit of filtering; such as, in uplink transmission, EMI device is to system end this section of circuit, and in downlink transmission, between EMI device to earphone, the radiofrequency signal interference of this section of circuit all cannot filtering.
And increase EMI protection component and low-capacitance electric capacity on the line due to needs, make components and parts on circuit more, the area that PCB layout takies is comparatively large, and layout is complicated.Meanwhile, because needs carry out strict protection when PCB layout, PCB layout difficulty can also be increased.
Summary of the invention
The embodiment of the present invention provides signal processing method, Apparatus and system, for improving the reliability of TDD noise filtering, and reduces PCB layout difficulty and complexity.
A kind of earphone, described earphone comprises microphone module, signal conversion module and earphone interface, wherein:
Described microphone module, for collected sound signal, and is converted to simulated audio signal by the voice signal collected;
Described signal conversion module, is converted to digital audio and video signals for the simulated audio signal be converted to by described microphone module, and the digital audio and video signals received from mobile terminal is converted to simulated audio signal;
Described earphone interface comprises electric source line interface, interface of the ground wire, interface clock signal and data line interface, wherein:
Described electric source line interface, for receiving the power supply signal that described mobile terminal provides;
Described interface of the ground wire, for being connected with the ground wire that described mobile terminal provides;
Described interface clock signal, for receiving the clock signal that described mobile terminal provides;
Described data line interface, for receiving the digital audio and video signals that described mobile terminal provides, and sends digital audio and video signals to described mobile terminal.
A kind of mobile terminal, described mobile terminal comprises processor and earpiece holes interface, wherein;
Described processor comprises clock signal determination module, for determining clock signal;
Between described processor and described earpiece holes interface by for transmit power supply signal holding wire, for be connected with ground wire holding wire, connect for the holding wire of transmission of digital audio signal and the holding wire for transmitting the clock signal that described clock signal determination module is determined;
Described earpiece holes interface comprises electric source line interface, interface of the ground wire, data line interface and interface clock signal, wherein:
Described electric source line interface, for providing power supply signal to earphone;
Described interface of the ground wire, for being connected with the ground wire that described mobile terminal provides;
Described data line interface, for receiving the digital audio and video signals that described earphone provides, and sends digital audio and video signals to described earphone;
Described interface clock signal, for providing clock signal to described earphone.
A kind of signal processing method, described method comprises:
Simulated audio signal is converted to digital audio and video signals, and described simulated audio signal is that the voice signal collected this locality carries out changing acquisition;
According to predetermined synchronizing frequency, described digital audio and video signals is sent to mobile terminal.
A kind of signal processing method, described method comprises:
Receive the digital audio and video signals that earphone sends according to predetermined synchronizing frequency;
Described digital audio and video signals is processed.
A kind of signal processing apparatus, described device comprises:
Modular converter, for simulated audio signal is converted to digital audio and video signals, described simulated audio signal is that the voice signal collected this locality carries out changing acquisition;
Sending module, for sending to mobile terminal according to predetermined synchronizing frequency by described digital audio and video signals.
A kind of signal processing apparatus, described device comprises:
Receiver module, for receiving the digital audio and video signals that earphone sends according to predetermined synchronizing frequency;
Processing module, processes for the digital audio and video signals received receiver module.
A kind of signal processing system, described system comprises mobile terminal and earphone, wherein:
Described earphone, for simulated audio signal is converted to digital audio and video signals, described simulated audio signal is that the voice signal collected described earphone carries out changing acquisition; And according to predetermined synchronizing frequency, described digital audio and video signals is sent to described mobile terminal;
Described mobile terminal, for receiving the digital audio and video signals that described earphone sends according to predetermined synchronizing frequency, and processes described digital audio and video signals.
A kind of signal processing method, described method comprises:
According to the digital audio and video signals that predetermined receive frequency mobile terminal receive sends;
The digital audio and video signals that the described mobile terminal received sends is converted to simulated audio signal;
The simulated audio signal obtained after exporting conversion is to user.
A kind of signal processing method, described method comprises:
According to downstream clock signal determination transmission frequency;
Digital audio and video signals is sent to earphone according to described transmission frequency.
A kind of signal processing apparatus, described device comprises:
Receiver module, for the digital audio and video signals sent according to predetermined receive frequency mobile terminal receive;
Modular converter, is converted to simulated audio signal for the digital audio and video signals sent by the described mobile terminal received;
Output module, for the simulated audio signal that obtains after exporting the conversion of described modular converter to user.
A kind of signal processing apparatus, described device comprises:
Determination module, for according to downstream clock signal determination transmission frequency;
Sending module, for sending digital audio and video signals according to described transmission frequency to earphone.
A kind of signal processing system, described system comprises mobile terminal and earphone, wherein:
Described earphone, for receiving the digital audio and video signals that described mobile terminal sends according to predetermined receive frequency; The digital audio and video signals that the described mobile terminal received sends is converted to simulated audio signal; The simulated audio signal obtained after exporting conversion is to user;
Described mobile terminal, for according to downstream clock signal determination transmission frequency; Digital audio and video signals is sent to described earphone according to described transmission frequency.
According to the scheme that the embodiment of the present invention provides, earphone can send digital audio and video signals to mobile terminal, and mobile terminal also can send digital audio and video signals to described earphone.Because the signal transmitted between earphone and mobile terminal is digital signal, therefore, greatly can reduce the chance that noise scurries into GSM signal, reduce the probability that TDD noise occurs.Meanwhile, due to without the need to layout EMI device on Mobile terminal main board, the area that PCB layout takies can be reduced, reduce PCB layout complexity, and, also without the need to carrying out strict protection when PCB layout, PCB layout difficulty therefore can also be reduced.
Accompanying drawing explanation
The design schematic diagram that Fig. 1 provides for prior art;
The PCB schematic layout pattern that Fig. 2 provides for prior art;
The structural representation of the earphone that Fig. 3 provides for the embodiment of the present invention one;
The structural representation of the mobile terminal that Fig. 4 provides for the embodiment of the present invention two;
The connection diagram of the processor that Fig. 5 provides for the embodiment of the present invention two and earpiece holes interface;
The flow chart of steps of the signal processing method that Fig. 6 provides for the embodiment of the present invention three;
The flow chart of steps of the signal processing method that Fig. 7 provides for the embodiment of the present invention four;
The flow chart of steps of the signal processing method that Fig. 8 provides for the embodiment of the present invention five;
The flow chart of steps of the signal processing method that Fig. 9 provides for the embodiment of the present invention six;
The communication scheme that Figure 10 provides for the embodiment of the present invention seven;
The Signal transmissions schematic diagram that Figure 11 provides for the embodiment of the present invention seven;
The Signal transmissions schematic diagram that Figure 12 provides for the embodiment of the present invention seven;
The structural representation of the signal processing apparatus that Figure 13 provides for the embodiment of the present invention eight;
The structural representation of the signal processing apparatus that Figure 14 provides for the embodiment of the present invention nine;
The structural representation of the signal processing system that Figure 15 provides for the embodiment of the present invention ten;
The structural representation of the signal processing apparatus that Figure 16 provides for the embodiment of the present invention 11;
The structural representation of the signal processing apparatus that Figure 17 provides for the embodiment of the present invention 12;
The structural representation of the signal processing system that Figure 18 provides for the embodiment of the present invention 13.
Embodiment
In order to eliminate the TDD noise in earphone signal, because digital signal antijamming capability is stronger, therefore, propose in various embodiments of the present invention, transmission of digital audio signal between the earphone that can be connected with this mobile terminal at mobile terminal, thus when making to utilize earphone to converse, relative to prior art, the probability that TDDnoise occurs can be reduced, improve the reliability that TDD noise eliminates, meanwhile, the design difficulty of Mobile terminal main board can also be reduced.
Below by Figure of description and each embodiment, the present invention program is described.
Embodiment one,
The embodiment of the present invention one provides a kind of earphone, and the structure of this earphone as shown in Figure 3, can comprise microphone module 11, signal conversion module 12 and earphone interface 13, wherein:
The voice signal collected for collected sound signal, and is converted to simulated audio signal by described microphone module 11;
Described signal conversion module 12 is converted to digital audio and video signals for the simulated audio signal be converted to by described microphone module, and the digital audio and video signals received from mobile terminal is converted to simulated audio signal;
Described earphone interface 13 comprises electric source line interface, interface of the ground wire, interface clock signal and data line interface, wherein:
Described electric source line interface, for receiving the power supply signal that described mobile terminal provides;
Described interface of the ground wire, for being connected with the ground wire that described mobile terminal provides;
Described interface clock signal, for receiving the clock signal that described mobile terminal provides;
Described data line interface, for receiving the digital audio and video signals that described mobile terminal provides, and sends digital audio and video signals to described mobile terminal.
Preferably, described data line interface, can comprise upstream data line interface and downlink data line interface, wherein:
Described upstream data line interface, for sending digital audio and video signals to described mobile terminal; Described downlink data line interface, for receiving the digital audio and video signals that described mobile terminal provides.
Described interface clock signal, can comprise uplink clock signaling interface and downstream clock signaling interface, wherein:
Described uplink clock signaling interface, for receiving the uplink clock signal that described mobile terminal sends; Described downstream clock signaling interface, for receiving the downstream clock signal that described mobile terminal sends.
Embodiment two,
The embodiment of the present invention two provides a kind of mobile terminal, and the structure of this mobile terminal as shown in Figure 4, can comprise processor 21 and earpiece holes interface 22, wherein;
Described processor 21 comprises clock signal determination module, for determining clock signal; Herein, processor 21 can be understood as and comprises in current mobile terminal, the set of each functional module except earpiece holes interface.
Between described processor 21 and described earpiece holes interface 22 by for transmit power supply signal holding wire, for be connected with ground wire holding wire, connect for the holding wire of transmission of digital audio signal and the holding wire for transmitting the clock signal that described clock signal determination module is determined;
Described earpiece holes interface 22 comprises electric source line interface, interface of the ground wire, data line interface and interface clock signal, wherein:
Described electric source line interface, for providing power supply signal to earphone;
Described interface of the ground wire, for being connected with the ground wire that described mobile terminal provides;
Described data line interface, for receiving the digital audio and video signals that described earphone provides, and sends digital audio and video signals to described earphone;
Described interface clock signal, for providing clock signal to described earphone.
Concrete, as shown in Figure 5, between described processor 21 and described earpiece holes interface 22 can by for transmit power supply signal holding wire, for be connected with ground wire holding wire, for sending the holding wire (transmission of downlink signal) of digital audio and video signals to earphone, for receiving the holding wire (transmission upward signal) of the digital audio and video signals that earphone sends, for transmitting the holding wire of the uplink clock signal that described clock signal determination module is determined, and connect for the holding wire transmitting the downstream clock signal that described clock signal determination module is determined.
Then, preferably, described data line interface, can comprise upstream data line interface and downlink data line interface, wherein:
Described upstream data line interface, for receiving the digital audio and video signals that described earphone provides; Described downlink data line interface, for sending digital audio and video signals to described earphone.
Described interface clock signal, can comprise uplink clock signaling interface and downstream clock signaling interface, wherein:
Described uplink clock signaling interface, for sending uplink clock signal to described earphone; Described downstream clock signaling interface, for sending downstream clock signal to described earphone.
With the embodiment of the present invention one and embodiment two based on same inventive concept, provide following signal processing method.
Embodiment three,
The embodiment of the present invention three provides a kind of signal processing method, and the method can be applied to the data feedback channel transmitting procedure between earphone that mobile terminal is connected with mobile terminal, and the steps flow chart of the method can as shown in Figure 6, comprise:
Step 101, carry out analog-to-digital conversion.
In this step, earphone can collected sound signal, the voice signal collected is converted to simulated audio signal, and the simulated audio signal obtained is converted to digital audio and video signals, to realize the follow-up digital data transmission to mobile terminal.
Concrete, in this step, the simulated audio signal obtained being converted to digital audio and video signals, can be that namely earphone triggers execution after the power-up, also can be to trigger when receiving the clock signal that mobile terminal sends to perform.
Step 102, transmission digital audio and video signals.
In this step, described digital audio and video signals can be sent to mobile terminal according to predetermined synchronizing frequency by earphone.
Described synchronizing frequency can be determined in the following manner: receive the uplink clock signal that described mobile terminal sends; According to described uplink clock signal, determine described synchronizing frequency.
Then preferably, in a step 101, simulated audio signal is converted to digital audio and video signals, can comprises: determine the first inversion frequency according to described uplink clock signal, and according to described first inversion frequency, simulated audio signal is converted to digital audio and video signals.
Concrete, the frequency (i.e. synchronizing frequency) of uplink clock signal can be understood as not higher than the product of the first inversion frequency (as 8k) with analog-to-digital conversion (A/D converter) precision (as 16), thus ensure that simulated audio signal is converted to the speed of digital audio and video signals by earphone, higher than the speed of earphone to mobile terminal transmission of digital audio signal.
Be described below by the scheme of a specific embodiment to embodiment three.
Embodiment four,
The embodiment of the present invention one provides a kind of signal processing method, and the method can be applied to the data feedback channel transmitting procedure between earphone that mobile terminal is connected with mobile terminal, and the steps flow chart of the method can as shown in Figure 7, comprise:
The uplink clock signal that step 201, earphone mobile terminal receive send.
Before carrying out uplink, namely earphone by audio signal transmission to before mobile terminal, earphone can mobile terminal receive send uplink clock signal.
Step 202, earphone carry out audio signal conversion.
Due in the present embodiment, what earphone transmitted to mobile terminal is digital signal, and therefore, in this step, earphone needs the simulated audio signal collected to be converted to digital audio and video signals.Concrete, earphone can determine the first inversion frequency according to uplink clock signal, and according to the first inversion frequency, utilizes analog/digital converter (A/D converter) that the simulated audio signal collected is converted to digital audio and video signals.
In addition, earphone collection simulated audio signal can be understood as earphone and voice signal is converted to simulated audio signal.
In this step, earphone gathers simulated audio signal and the simulated audio signal collected is converted to digital audio and video signals can be realized by digital microphone integrated in earphone.
Step 203, earphone send digital audio and video signals.
In this step, earphone can according to the described uplink clock signal received, determine synchronizing frequency, and according to this synchronizing frequency, the digital audio and video signals obtained after conversion is sent to mobile terminal, realize uplink signal transmissions, mobile terminal can directly be processed the digital audio and video signals received.This process can be, but not limited to comprise, and carries out recording operation to the digital audio and video signals received, and/or, the digital audio and video signals received is operated accordingly, and sends to Correspondent Node.
According to the scheme that embodiment three, four provides, due in uplink signal transmissions process, what transmit in earphone to the whole path of mobile terminal is digital audio and video signals, therefore, greatly can reduce the probability that TDD noise occurs, improve the quality utilizing earphone to converse.And mobile terminal side directly can obtain digital audio and video signals, make mobile terminal can also omit the conversion of simulated audio signal to digital audio and video signals.
Embodiment five,
The embodiment of the present invention five provides a kind of signal processing method, and the method can be applied to the down going channel transmitting procedure between earphone that mobile terminal is connected with mobile terminal, and the steps flow chart of the method can as shown in Figure 8, comprise:
Step 301, determine transmission frequency.
In this step, the downstream clock signal that mobile terminal can be determined according to self determines the transmission frequency sending digital audio and video signals to earphone.
Step 302, to earphone send digital audio and video signals.
In this step, mobile terminal can send digital audio and video signals according to the transmission frequency determined to earphone.
Preferably, before step 302 (before step 301 or after step 301), described method can also comprise:
Step 301 ', send described downstream clock signal to earphone.
In this step, mobile terminal can send described downstream clock signal to described earphone, so that described earphone is according to described downstream clock signal determination receive frequency, between guarantee earphone and mobile terminal, transfer of data is synchronous.
Be described below by the scheme of a specific embodiment to the embodiment of the present invention five.
Embodiment six,
The embodiment of the present invention six provides a kind of signal processing method, and the method can be applied to the down going channel transmitting procedure between earphone that mobile terminal is connected with mobile terminal, and the steps flow chart of the method can as shown in Figure 9, comprise:
Step 401, mobile terminal send downstream clock signal to earphone.
When carrying out downlink transfer, namely mobile terminal by audio signal transmission to earphone time, mobile terminal can send downstream clock signal to earphone, thus the down-going synchronous that downstream clock signal can be utilized to realize between earphone and mobile terminal.
Step 402, mobile terminal send digital audio and video signals.
In this step, mobile terminal can send digital audio and video signals to earphone, realizes downstream signal transmission.Concrete, according to described downstream clock signal determination transmission frequency, digital audio and video signals can be sent according to the transmission frequency determined to described earphone, thus ensure can realize down-going synchronous between earphone and mobile terminal.
Preferably, the present embodiment can also comprise the following steps:
Step 403, earphone carry out audio signal conversion.
Earphone is according to downstream clock signal, determine receive frequency, and after receiving digital audio and video signals according to the receive frequency determined, the audio signal exported due to earphone is simulated audio signal, therefore, in this step, earphone needs the digital audio and video signals received to be converted to simulated audio signal.Concrete, earphone can determine the second conversion speed according to downstream clock signal, utilize digital/analog converter (D/A converter) that the digital audio and video signals received is converted to simulated audio signal, thus ensure further can realize down-going synchronous between earphone and mobile terminal.
Step 404, earphone output audio signal.
In this step, the simulated audio signal that conversion obtains can be exported to user by earphone.
According to the scheme that embodiment five, six provides, due in downstream signal transmitting procedure, what transmit in mobile terminal to the whole path of earphone is digital audio and video signals, therefore, greatly can reduce the probability that TDD noise occurs, improve the quality utilizing earphone to converse.
Below by a concrete example, the scheme that the embodiment of the present invention one ~ embodiment six provides is described.
Embodiment seven,
In the present embodiment, communication scheme between earphone and mobile terminal can be as shown in Figure 10, earphone can be connected with mobile terminal by the earpiece holes on mobile terminal, and can be 6 from the holding wire that mobile terminal enters earphone, wherein two is bus, one is power line, one is ground wire, all the other four holding wires one are for transmitting uplink clock signal, one for the uplink signal transmissions of earphone to mobile terminal, one for transmitting downstream clock signal, one transmits for the downstream signal of mobile terminal to earphone.
When carrying out uplink signal transmissions, Signal transmissions schematic diagram can as shown in figure 11, and earphone needs to be connected with VDD-to-VSS respectively, and the uplink clock signal that mobile terminal receive sends, send upward signal according to uplink clock signal to mobile terminal.And in earpiece side, digital microphone can be utilized to obtain digital audio and video signals.
When carrying out downstream signal transmission, Signal transmissions schematic diagram can as shown in figure 12, and earphone needs to be connected with VDD-to-VSS respectively, the downstream clock signal that mobile terminal receive sends, and the digital audio and video signals that mobile terminal sends.And the digital audio and video signals received according to downstream clock signal determination conversion speed, can be converted to simulated audio signal, and export by earpiece side.
With the embodiment of the present invention one ~ embodiment seven based on same inventive concept, provide following device and system.
Embodiment eight,
The embodiment of the present invention eight provides a kind of signal processing apparatus, and this device can be integrated in earphone, and the structure of this device can as shown in figure 13, comprise:
Modular converter 31 is for being converted to digital audio and video signals by simulated audio signal, and described simulated audio signal is that the voice signal collected this locality carries out changing acquisition; Sending module 32 is for sending to mobile terminal according to predetermined synchronizing frequency by described digital audio and video signals.
Described device also comprises receiver module 33:
The uplink clock signal that described receiver module 33 sends for receiving described mobile terminal; Described sending module 32, for the described uplink clock signal received according to described receiver module, is determined described synchronizing frequency, and according to this synchronizing frequency, described digital audio and video signals is sent to mobile terminal.
Simulated audio signal for determining the first inversion frequency according to described uplink clock signal, and is converted to digital audio and video signals according to described first inversion frequency by described modular converter 31.
Described receiver module 33 is also for receiving the digital audio and video signals that described mobile terminal sends according to predetermined receive frequency;
The digital audio and video signals of described modular converter 31 also for being sent by the described mobile terminal received is converted to simulated audio signal;
Described device also comprises output module 34:
Described output module, for the simulated audio signal that obtains after exporting the conversion of described modular converter to user.
Described receiver module 33 also for receiving the downstream clock signal that described mobile terminal sends, according to described downstream clock signal, determines described receive frequency.
The digital audio and video signals that the described mobile terminal received sends for determining the second inversion frequency according to described downstream clock signal, and is converted to simulated audio signal according to described second inversion frequency by described modular converter 31.
Embodiment nine,
The embodiment of the present invention nine provides a kind of signal processing apparatus, and this device can be in the terminal integrated, and the structure of this device can as shown in figure 14, comprise:
The digital audio and video signals that receiver module 41 sends according to predetermined synchronizing frequency for receiving earphone; Processing module 42 processes for the digital audio and video signals received receiver module.
Described device also comprises sending module 43:
Sending module 43, for sending uplink clock signal to described earphone, so that described earphone is according to described uplink clock signal, determines described synchronizing frequency.
Described sending module 43 also for according to downstream clock signal determination transmission frequency, sends digital audio and video signals according to described transmission frequency to described earphone.
Described sending module 43 is also for sending downstream clock signal, so that described earphone is according to described downstream clock signal determination receive frequency to described earphone.
Embodiment ten,
The embodiment of the present invention ten provides a kind of signal processing system, and the structure of this system as shown in figure 15, can comprise mobile terminal 51 and earphone 52, wherein:
Described earphone 52 is for being converted to digital audio and video signals by simulated audio signal, and described simulated audio signal is that the voice signal collected described earphone carries out changing acquisition; And according to predetermined synchronizing frequency, described digital audio and video signals is sent to described mobile terminal;
The digital audio and video signals that described mobile terminal 51 sends according to predetermined synchronizing frequency for receiving described earphone, and described digital audio and video signals is processed.
Wherein, mobile terminal in the present embodiment can comprise the device that embodiment nine provides, and has corresponding function, and earphone can comprise the device that embodiment eight provides, and has corresponding function, does not repeat them here.
Preferably, the present invention can also provide following device and system.
Embodiment 11,
The embodiment of the present invention 11 provides a kind of signal processing apparatus, and the structure of this device can as shown in figure 16, comprise:
The digital audio and video signals of receiver module 61 for sending according to predetermined receive frequency mobile terminal receive; Modular converter 62 is converted to simulated audio signal for the digital audio and video signals sent by the described mobile terminal received; Output module 63 for the simulated audio signal that obtains after exporting the conversion of described modular converter to user.
Embodiment 12,
The embodiment of the present invention 12 provides a kind of signal processing apparatus, and the structure of this device can as shown in figure 17, comprise:
Determination module 71 is for according to downstream clock signal determination transmission frequency; Sending module 72 is for sending digital audio and video signals according to described transmission frequency to earphone.
Embodiment 13,
The embodiment of the present invention 13 provides a kind of signal processing system, and the structure of this system as shown in figure 18, can comprise mobile terminal 81 and earphone 82, wherein:
The digital audio and video signals that described earphone 82 sends for receiving described mobile terminal according to predetermined receive frequency; The digital audio and video signals that the described mobile terminal received sends is converted to simulated audio signal; The simulated audio signal obtained after exporting conversion is to user;
Described mobile terminal 81 is for according to downstream clock signal determination transmission frequency; Digital audio and video signals is sent to described earphone according to described transmission frequency.
Those skilled in the art should understand, the embodiment of the application can be provided as method, system or computer program.Therefore, the application can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the application can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code.
The application describes with reference to according to the flow chart of the method for the embodiment of the present application, equipment (system) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computer or other programmable data processing device produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
Although described the preferred embodiment of the application, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the application's scope.
Obviously, those skilled in the art can carry out various change and modification to the application and not depart from the spirit and scope of the application.Like this, if these amendments of the application and modification belong within the scope of the application's claim and equivalent technologies thereof, then the application is also intended to comprise these change and modification.
Claims (22)
1. an earphone, is characterized in that, described earphone comprises microphone module, signal conversion module and earphone interface, wherein:
Described microphone module, for collected sound signal, and is converted to simulated audio signal by the voice signal collected;
Described signal conversion module, is converted to digital audio and video signals for the simulated audio signal be converted to by described microphone module, and the digital audio and video signals received from mobile terminal is converted to simulated audio signal;
Described earphone interface comprises electric source line interface, interface of the ground wire, interface clock signal and data line interface, wherein:
Described electric source line interface, for receiving the power supply signal that described mobile terminal provides;
Described interface of the ground wire, for being connected with the ground wire that described mobile terminal provides;
Described interface clock signal, for receiving the clock signal that described mobile terminal provides;
Described data line interface, for receiving the digital audio and video signals that described mobile terminal provides, and sends digital audio and video signals to described mobile terminal;
Wherein, described interface clock signal, comprises uplink clock signaling interface and downstream clock signaling interface, described uplink clock signaling interface, for receiving the uplink clock signal that described mobile terminal sends; Described downstream clock signaling interface, for receiving the downstream clock signal that described mobile terminal sends;
Described data line interface, for receiving the digital audio and video signals that described mobile terminal sends according to predetermined receive frequency; Described receive frequency is determined in the following manner: receive the downstream clock signal that described mobile terminal sends; According to described downstream clock signal, determine described receive frequency.
2. earphone as claimed in claim 1, is characterized in that, described data line interface, comprises upstream data line interface and downlink data line interface, wherein:
Described upstream data line interface, for sending digital audio and video signals to described mobile terminal;
Described downlink data line interface, for receiving the digital audio and video signals that described mobile terminal provides.
3. a mobile terminal, is characterized in that, described mobile terminal comprises processor and earpiece holes interface, wherein;
Described processor comprises clock signal determination module, for determining clock signal;
Between described processor and described earpiece holes interface by for transmit power supply signal holding wire, for be connected with ground wire holding wire, connect for the holding wire of transmission of digital audio signal and the holding wire for transmitting the clock signal that described clock signal determination module is determined;
Described earpiece holes interface comprises electric source line interface, interface of the ground wire, data line interface and interface clock signal, wherein:
Described electric source line interface, for providing power supply signal to earphone;
Described interface of the ground wire, for being connected with the ground wire that described mobile terminal provides;
Described data line interface, for receiving the digital audio and video signals that described earphone provides, and sends digital audio and video signals to described earphone;
Described interface clock signal, for providing clock signal to described earphone;
Wherein, described interface clock signal, comprises uplink clock signaling interface and downstream clock signaling interface, described uplink clock signaling interface, for sending uplink clock signal to described earphone, so that described earphone is according to described uplink clock signal, determine synchronizing frequency; Described downstream clock signaling interface, for sending downstream clock signal, so that described earphone is according to described downstream clock signal determination receive frequency to described earphone.
4. mobile terminal as claimed in claim 3, is characterized in that, described data line interface, comprises upstream data line interface and downlink data line interface, wherein:
Described upstream data line interface, for receiving the digital audio and video signals that described earphone provides;
Described downlink data line interface, for sending digital audio and video signals to described earphone.
5. a signal processing method, is characterized in that, described method comprises:
Simulated audio signal is converted to digital audio and video signals, and described simulated audio signal is that the voice signal collected this locality carries out changing acquisition;
According to predetermined synchronizing frequency, described digital audio and video signals is sent to mobile terminal; Wherein, described synchronizing frequency is determined in the following manner: receive the uplink clock signal that described mobile terminal sends; According to described uplink clock signal, determine described synchronizing frequency;
The digital audio and video signals of described mobile terminal transmission is received according to predetermined receive frequency; Described receive frequency is determined in the following manner: receive the downstream clock signal that described mobile terminal sends; According to described downstream clock signal, determine described receive frequency.
6. method as claimed in claim 5, is characterized in that, simulated audio signal is converted to digital audio and video signals, specifically comprise:
Determine the first inversion frequency according to described uplink clock signal, and according to described first inversion frequency, simulated audio signal is converted to digital audio and video signals.
7. the method as described in claim 5 or 6, is characterized in that, described method also comprises:
The digital audio and video signals that the described mobile terminal received sends is converted to simulated audio signal;
The simulated audio signal obtained after exporting conversion is to user.
8. method as claimed in claim 7, is characterized in that, the digital audio and video signals that the described mobile terminal received sends is converted to simulated audio signal, specifically comprises:
Determine the second inversion frequency according to described downstream clock signal, and according to described second inversion frequency, the digital audio and video signals that the described mobile terminal received sends is converted to simulated audio signal.
9. a signal processing method, is characterized in that, described method comprises:
Receive the digital audio and video signals that earphone sends according to predetermined synchronizing frequency;
Described digital audio and video signals is processed;
Wherein, send uplink clock signal to described earphone, so that described earphone is according to described uplink clock signal, determine described synchronizing frequency; Downstream clock signal is sent, so that described earphone is according to described downstream clock signal determination receive frequency to described earphone.
10. method as claimed in claim 9, it is characterized in that, described method also comprises:
According to downstream clock signal determination transmission frequency, send digital audio and video signals according to described transmission frequency to described earphone.
11. 1 kinds of signal processing apparatus, is characterized in that, described device comprises:
Modular converter, for simulated audio signal is converted to digital audio and video signals, described simulated audio signal is that the voice signal collected this locality carries out changing acquisition;
Sending module, for sending to mobile terminal according to predetermined synchronizing frequency by described digital audio and video signals;
Wherein, described device also comprises receiver module: described receiver module, for receiving the uplink clock signal that described mobile terminal sends; Described sending module, for the described uplink clock signal received according to described receiver module, determines described synchronizing frequency, and according to this synchronizing frequency, described digital audio and video signals is sent to mobile terminal; Described receiver module, also for receiving the digital audio and video signals that described mobile terminal sends according to predetermined receive frequency; Described receiver module, also for receiving the downstream clock signal that described mobile terminal sends, according to described downstream clock signal, determines described receive frequency.
12. devices as claimed in claim 11, is characterized in that, described modular converter, for determining the first inversion frequency according to described uplink clock signal, and according to described first inversion frequency, simulated audio signal are converted to digital audio and video signals.
13. devices as described in claim 11 or 12, is characterized in that,
Described modular converter, the digital audio and video signals also for being sent by the described mobile terminal received is converted to simulated audio signal;
Described device also comprises output module:
Described output module, for the simulated audio signal that obtains after exporting the conversion of described modular converter to user.
14. devices as claimed in claim 13, is characterized in that,
Described modular converter, for determining the second inversion frequency according to described downstream clock signal, and is converted to simulated audio signal according to described second inversion frequency by the digital audio and video signals that the described mobile terminal received sends.
15. 1 kinds of signal processing apparatus, is characterized in that, described device comprises:
Receiver module, for receiving the digital audio and video signals that earphone sends according to predetermined synchronizing frequency;
Processing module, processes for the digital audio and video signals received receiver module;
Wherein, described device also comprises sending module: described sending module, for sending uplink clock signal to described earphone, so that described earphone is according to described uplink clock signal, determines described synchronizing frequency; Described sending module, also for sending downstream clock signal, so that described earphone is according to described downstream clock signal determination receive frequency to described earphone.
16. devices as claimed in claim 15, is characterized in that,
Described sending module, also for according to downstream clock signal determination transmission frequency, sends digital audio and video signals according to described transmission frequency to described earphone.
17. 1 kinds of signal processing systems, is characterized in that, described system comprises mobile terminal and earphone, wherein:
Described earphone, for simulated audio signal is converted to digital audio and video signals, described simulated audio signal is that the voice signal collected described earphone carries out changing acquisition; And according to predetermined synchronizing frequency, described digital audio and video signals is sent to described mobile terminal; Wherein, described synchronizing frequency is determined in the following manner: receive the uplink clock signal that described mobile terminal sends; According to described uplink clock signal, determine described synchronizing frequency; The digital audio and video signals of described mobile terminal transmission is received according to predetermined receive frequency; Described receive frequency is determined in the following manner: receive the downstream clock signal that described mobile terminal sends; According to described downstream clock signal, determine described receive frequency;
Described mobile terminal, for receiving the digital audio and video signals that described earphone sends according to predetermined synchronizing frequency, and processes described digital audio and video signals; Wherein, send uplink clock signal to described earphone, so that described earphone is according to described uplink clock signal, determine described synchronizing frequency; Described downstream clock signal is sent, so that described earphone is according to described downstream clock signal determination receive frequency to described earphone.
18. 1 kinds of signal processing methods, is characterized in that, described method comprises:
According to the digital audio and video signals that predetermined receive frequency mobile terminal receive sends; Wherein, described receive frequency is determined in the following manner: receive the downstream clock signal that described mobile terminal sends; According to described downstream clock signal, determine described receive frequency;
The digital audio and video signals that the described mobile terminal received sends is converted to simulated audio signal;
The simulated audio signal obtained after exporting conversion is to user.
19. 1 kinds of signal processing methods, is characterized in that, described method comprises:
According to downstream clock signal determination transmission frequency;
Digital audio and video signals is sent to earphone according to described transmission frequency;
Wherein, before sending digital audio and video signals to described earphone, described downstream clock signal is sent to described earphone, so that described earphone is according to described downstream clock signal determination receive frequency.
20. 1 kinds of signal processing apparatus, is characterized in that, described device comprises:
Receiver module, for the digital audio and video signals sent according to predetermined receive frequency mobile terminal receive; Wherein, described receive frequency is determined in the following manner: receive the downstream clock signal that described mobile terminal sends; According to described downstream clock signal, determine described receive frequency;
Modular converter, is converted to simulated audio signal for the digital audio and video signals sent by the described mobile terminal received;
Output module, for the simulated audio signal that obtains after exporting the conversion of described modular converter to user.
21. 1 kinds of signal processing apparatus, is characterized in that, described device comprises:
Determination module, for according to downstream clock signal determination transmission frequency;
Sending module, for sending digital audio and video signals according to described transmission frequency to earphone;
Wherein, described sending module, also for before sending digital audio and video signals to described earphone, sends described downstream clock signal to described earphone, so that described earphone is according to described downstream clock signal determination receive frequency.
22. 1 kinds of signal processing systems, is characterized in that, described system comprises mobile terminal and earphone, wherein:
Described earphone, for receiving the digital audio and video signals that described mobile terminal sends according to predetermined receive frequency; The digital audio and video signals that the described mobile terminal received sends is converted to simulated audio signal; The simulated audio signal obtained after exporting conversion is to user; Wherein, described receive frequency is determined in the following manner: receive the downstream clock signal that described mobile terminal sends; According to described downstream clock signal, determine described receive frequency;
Described mobile terminal, for according to downstream clock signal determination transmission frequency; Digital audio and video signals is sent to described earphone according to described transmission frequency; Wherein, before sending digital audio and video signals to described earphone, described downstream clock signal is sent to described earphone, so that described earphone is according to described downstream clock signal determination receive frequency.
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| KR20160010606A (en) | 2013-05-23 | 2016-01-27 | 노우레스 일렉트로닉스, 엘엘시 | Vad detection microphone and method of operating the same |
| US10020008B2 (en) | 2013-05-23 | 2018-07-10 | Knowles Electronics, Llc | Microphone and corresponding digital interface |
| US20180317019A1 (en) | 2013-05-23 | 2018-11-01 | Knowles Electronics, Llc | Acoustic activity detecting microphone |
| KR20160083904A (en) * | 2013-11-08 | 2016-07-12 | 노우레스 일렉트로닉스, 엘엘시 | Microphone and corresponding digital interface |
| US10045140B2 (en) | 2015-01-07 | 2018-08-07 | Knowles Electronics, Llc | Utilizing digital microphones for low power keyword detection and noise suppression |
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| CN1684377A (en) * | 2004-04-17 | 2005-10-19 | 鸿富锦精密工业（深圳）有限公司 | Wireless Headphone System |
| CN2817217Y (en) * | 2004-09-29 | 2006-09-13 | 蔡树正 | Digital on-bard hand-free device for mobile phone |
| CN101166037A (en) * | 2006-10-19 | 2008-04-23 | 岑良森 | Radio transmitting-receiving method for digit audio frequency signal and wireless digital microphone |
| CN101175102B (en) * | 2006-11-01 | 2013-01-09 | 鸿富锦精密工业（深圳）有限公司 | Communication equipment with audio-modulation function and method thereof |
| CN101807426B (en) * | 2009-02-13 | 2013-06-05 | 瑞昱半导体股份有限公司 | Audio device and audio processing method |
| CN102006681B (en) * | 2010-11-25 | 2015-04-01 | 中兴通讯股份有限公司 | Audio frequency processing method and dual-mode digital mobile communication terminal |
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