CN109655816A - Obtain the method, device and equipment terminal of sound source position - Google Patents
Obtain the method, device and equipment terminal of sound source position Download PDFInfo
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- CN109655816A CN109655816A CN201811461997.5A CN201811461997A CN109655816A CN 109655816 A CN109655816 A CN 109655816A CN 201811461997 A CN201811461997 A CN 201811461997A CN 109655816 A CN109655816 A CN 109655816A
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- microphone
- signal
- sound source
- source position
- freuqncy signal
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
- G01S11/14—Systems for determining distance or velocity not using reflection or reradiation using ultrasonic, sonic, or infrasonic waves
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
The invention discloses a kind of method, device and equipment terminals for obtaining sound source position, which comprises according to the audio signal of each microphone acquisition, filters out the microphone in the audio signal of acquisition containing intermediate-freuqncy signal；Compare the collected intermediate-freuqncy signal of screened microphone, captures a microphone for collecting intermediate-freuqncy signal amplitude maximum, and be asserted target microphone；According to the position where target microphone, sound source position is locked.Range of voice based on people is intermediate-freuqncy signal, will first collect the microphone containing the intermediate-freuqncy signal for representing voice and screens, and ignores the environmental noise in inhuman audio frequency spectral limit, reaches fuzzy screening purpose；Then according to the microphone collected intermediate-freuqncy signal amplitude maximum nearest from spokesman, a microphone for collecting intermediate-freuqncy signal amplitude maximum is captured, and is asserted target microphone, achievees the purpose that accurately to screen.The method of the acquisition sound source position of the embodiment of the present invention is simple and reliable, and response is rapid.
Description
Technical field
The present invention relates to audio detection fields, and in particular to obtains the method, device and equipment terminal of sound source position.
Background technique
Video conferencing system be it is a kind of allow be in the people in strange land realized by certain transmission medium " it is in real time, visual, hand over
Multi-media communication technology mutually ".It can be by existing various electric appliance communication transfer media, by the static state and dynamic of personage
The much informations such as image, voice, text, picture are distributed on the terminal device of each user, so that the use geographically dispersed
Family can be copolymerized at one, by the various ways exchange of information such as figure, sound, increased both sides to the understandability of content, made one
Like it is on the spot in person participation in the meeting in same meeting-place.
General video conferencing system includes camera for acquiring meeting live view and multiple for acquiring hair
Say the microphone of people's audio signal, multiple microphone arrangements are before each spokesman seat.In meeting progress, in order to more preferable
Ground make participant more can detailed understanding current speaker the case where, it usually needs will be arranged in meeting-place video camera alignment
Current speaker, and acquire in real time and play its practical speech situation.Currently used camera automatic control mode, generally
It is to obtain the time difference information of current speech according to multiple microphones to obtain the rough location information of current sound source, then controls
Video camera processed executes audio source tracking, to carry out spokesman's picture acquisition.However this sound localization method using the time difference,
Have the defects that be easy influenced by environmental noise, position it is not accurate enough.
Summary of the invention
In view of this, the embodiment of the invention provides the method, device and equipment terminals for obtaining sound source position, effectively
Auditory localization is carried out, it is accurate to obtain sound source position in video conference.
The first aspect of the embodiment of the present invention provides the method for obtaining sound source position, comprising the following steps:
S1, audio signal is acquired by multiple microphones；
S2, the audio signal acquired according to each microphone, filter out the wheat in the audio signal of acquisition containing intermediate-freuqncy signal
Gram wind；
S3, compare the collected intermediate-freuqncy signal of screened microphone, capture collects the one of intermediate-freuqncy signal amplitude maximum
A microphone, and it is asserted target microphone；
Position where S4, foundation target microphone, locks sound source position.
Further, the microphone containing intermediate-freuqncy signal includes: in the audio signal for filtering out acquisition
Low frequency and high-frequency signal filtering are carried out to the audio signal of each microphone acquisition, detected through low frequency and high-frequency signal
Whether filtered output signal contains intermediate-freuqncy signal, filters out the microphone in audio signal containing intermediate-freuqncy signal.
Further, after the audio signal acquired to each microphone carries out low frequency and high-frequency signal filtering further include:
Shape correction is carried out to low frequency and the filtered output signal of high-frequency signal.
Further, the frequency range of the intermediate-freuqncy signal is 400HZ~6000HZ.
Further, described to be asserted before target microphone further include: the intermediate-freuqncy signal duration to be calculated, if continuing
Time reaches preset threshold, then is asserted target microphone.
The second aspect of the embodiment of the present invention provides a kind of device for obtaining sound source position, comprising:
Acquisition module, for acquiring audio signal by multiple microphones；
Screening module, the audio signal for acquiring according to each microphone, filters out in containing in the audio signal of acquisition
The microphone of frequency signal；
Comparison module, compares the collected intermediate-freuqncy signal of screened microphone, and capture collects intermediate-freuqncy signal amplitude most
A big microphone, and it is asserted target microphone；
Locking module, for locking sound source position according to the position where target microphone.
The third aspect of the embodiment of the present invention provides a kind of device end, including memory, processor and is stored in
In the memory and the computer program that can run on the processor, the processor execute the computer program
The step of Shi Shixian method as described above.
The fourth aspect of the embodiment of the present invention provides a kind of video conference tracking system, including camera, camera drive
Dynamic device, multiple microphones and above equipment terminal, webcam driver device sound source position based on determined by device end
It sets control camera and executes sound source position tracking.
5th aspect of the embodiment of the present invention provides a kind of computer readable storage medium, described computer-readable to deposit
The step of storage media is stored with computer program, and the computer program realizes method as described above when being executed by processor.
The embodiment of the present invention at least has the advantages that the range of voice based on people is intermediate-freuqncy signal, first will acquisition
It is screened to the microphone containing the intermediate-freuqncy signal for representing voice, and ignores the environmental noise in inhuman audio frequency spectral limit, reached
To fuzzy screening purpose；Then according to the microphone collected intermediate-freuqncy signal amplitude maximum nearest from spokesman, acquisition is captured
To a microphone of intermediate-freuqncy signal amplitude maximum, and it is asserted target microphone, achievees the purpose that accurately to screen；Most
Sound source position is locked according to the position where target microphone afterwards.The method of the acquisition sound source position of the embodiment of the present invention is simple
Reliably, response is rapid.
Detailed description of the invention
Fig. 1 is the implementation process schematic diagram for the method that the embodiment of the present invention one obtains sound source position；
Fig. 2 is the structural schematic diagram for the device that the embodiment of the present invention two obtains sound source position；
Fig. 3 is the structural schematic diagram of the device end of the embodiment of the present invention three；
Fig. 4 is the structural schematic diagram of the video conference tracking system of the embodiment of the present invention four.
Specific embodiment
Referring to Figure 1, the embodiment of the present invention one provides the method for obtaining sound source position, comprising the following steps:
S1, audio signal is acquired by multiple microphones；
S2, the audio signal acquired according to each microphone, filter out the wheat in the audio signal of acquisition containing intermediate-freuqncy signal
Gram wind；
S3, compare the collected intermediate-freuqncy signal of screened microphone, capture collects the one of intermediate-freuqncy signal amplitude maximum
A microphone, and it is asserted target microphone；
Position where S4, foundation target microphone, locks sound source position.
Illustratively, in the step S2, the microphone containing intermediate-freuqncy signal in the audio signal for filtering out acquisition
It can be realized by the following method:
Low frequency and high-frequency signal filtering are carried out to the audio signal of each microphone acquisition, detected through low frequency and high-frequency signal
Whether filtered output signal contains intermediate-freuqncy signal, filters out the microphone in audio signal containing intermediate-freuqncy signal.
Wherein, low frequency and the high-frequency signal filtering of the audio signal can pass through high-pass filter and low-pass filter
It realizes.Low frequency signal of the high-pass filter barrier lower than setting critical value is first passed through, then obstructing by low-pass filter is more than to set
The high-frequency signal for determining critical value, is achieved in and filters out low frequency signal and high-frequency signal.
Optionally, after the audio signal progress low frequency and high-frequency signal to the acquisition of each microphone filters further include:
IF output signal Shape correction.After audio signal filters out low frequency signal and high-frequency signal, intermediate-freuqncy signal is exported, is then led to
It crosses shaping circuit and Shape correction is carried out to intermediate-freuqncy signal, the signal of output is voltage pulse, subsequent in step S2 to pass through detection
Whether shaping circuit output end has voltage pulse, to filter out the microphone in audio signal collected containing intermediate-freuqncy signal；
In step S3 the intermediate-freuqncy signal amplitude to the microphone acquisition filtered out can be realized by the amplitude size of detection voltage pulse
It is compared.
It can also include: to calculate the intermediate-freuqncy signal duration before being asserted target microphone, really in the step S3
Guarantor's duration reaches preset threshold, and a microphone of the intermediate-freuqncy signal amplitude maximum captured is just asserted target wheat
Otherwise gram wind does not lock sound source position to ensure that the intermediate-freuqncy signal of acquired representative voice has certain duration.
It should be noted that the frequency range of intermediate-freuqncy signal described in the present embodiment is 400HZ~6000HZ.
The embodiment of the present invention two provides a kind of device for obtaining sound source position, comprising:
Acquisition module, for acquiring audio signal by multiple microphones；
Screening module filters out in the audio signal of acquisition and believes containing intermediate frequency according to the audio signal of each microphone acquisition
Number microphone；
Comparison module, compares the collected intermediate-freuqncy signal of screened microphone, and capture collects intermediate-freuqncy signal amplitude most
A big microphone, and it is asserted target microphone；
Locking module, for locking sound source position according to the position where target microphone.
Optionally, the screening module specifically includes:
Low frequency filters out unit, for being filtered to the low frequency signal in audio signal；
High frequency filters out unit, for being filtered to the high-frequency signal in audio signal；
Intermediate frequency detection unit, for detecting through whether low frequency and the filtered output signal of high-frequency signal contain intermediate frequency letter
Number；
Determination unit is screened, for filtering out the microphone in audio signal containing intermediate-freuqncy signal.
Optionally, the screening module further include:
Output Shaping unit, for IF output signal Shape correction.
Optionally, the comparison module specifically includes:
Intermediate frequency amplitude com parison unit captures in collecting for comparing the collected intermediate-freuqncy signal of screened microphone
The maximum microphone of frequency signal amplitude,
Object judgement unit, for calculating the intermediate-freuqncy signal duration of captured microphone, if the duration reaches
Preset threshold is then asserted target microphone.
The embodiment of the present invention three provides a kind of device end, including memory, processor and is stored in described deposit
In reservoir and the computer program that can run on the processor, the processor are realized when executing the computer program
Step in the embodiment of the method for above-mentioned acquisition sound source position, such as step S1 to S4 shown in FIG. 1.Alternatively, the processor
The function of each module/unit in above-mentioned apparatus embodiment is realized when executing the computer program.
Illustratively, the computer program can be divided into one or more module/units, it is one or
Multiple module/units are stored in the memory, and are executed by the processor, to complete the present invention.It is one or
Multiple module/units can be the series of computation machine program instruction section that can complete specific function, and the instruction segment is for describing
Implementation procedure of the computer program in the terminal device.For example, the computer program can be divided into acquisition
Module, screening module, comparison module, locking module, each module concrete function are as follows:
Acquisition module, for acquiring audio signal by multiple microphones；
Screening module filters out in the audio signal of acquisition and believes containing intermediate frequency according to the audio signal of each microphone acquisition
Number microphone；
Comparison module, compares the collected intermediate-freuqncy signal of screened microphone, and capture collects intermediate-freuqncy signal amplitude most
A big microphone, and it is asserted target microphone；
Locking module, for locking sound source position according to the position where target microphone.
The terminal device can be wearable device, desktop PC, notebook, palm PC and cloud service
Device etc. calculates equipment.The terminal device may include, but be not limited only to, processor, memory.Those skilled in the art can be with
Understand, Fig. 3 is only the example of terminal device, does not constitute the restriction to terminal device, may include more or more than illustrating
Few component perhaps combines certain components or different components, such as the terminal device can also include input and output
Equipment, network access equipment, bus etc..
Alleged processor can be central processing unit (Central Processing Unit, CPU), can also be it
His general processor, digital signal processor (Digital Signal Processor, DSP), specific integrated circuit
(Application Specific Integrated Circuit, ASIC), ready-made programmable gate array
(FieldProgrammable Gate Array, FPGA) either other programmable logic device, discrete gate or transistor are patrolled
Collect device, discrete hardware components etc..General processor can be microprocessor or the processor be also possible to it is any conventional
Processor etc..
The memory can be the internal storage unit of the terminal device, such as the hard disk or memory of terminal device.
The memory is also possible to the plug-in type being equipped on the External memory equipment of the terminal device, such as the terminal device
Hard disk, intelligent memory card (Smart Media Card, SMC), secure digital (Secure Digital, SD) card, flash card
(Flash Card) etc..Further, the memory can also both include the internal storage unit of the terminal device or wrap
Include External memory equipment.The memory is for other journeys needed for storing the computer program and the terminal device
Sequence and data.The memory can be also used for temporarily storing the data that has exported or will export.
It is apparent to those skilled in the art that for convenience of description and succinctly, only with above-mentioned each function
Can unit, module division progress for example, in practical application, can according to need and by above-mentioned function distribution by difference
Functional unit, module complete, i.e., the internal structure of described device is divided into different functional unit or module, with complete
All or part of function described above.Each functional unit in embodiment, module can integrate in a processing unit
In, it is also possible to each unit and physically exists alone, can also be integrated in one unit with two or more units, on
It states integrated unit both and can take the form of hardware realization, can also realize in the form of software functional units.In addition,
Each functional unit, module specific name be also only for convenience of distinguishing each other, the protection model being not intended to limit this application
It encloses.The specific work process of unit in above system, module, can refer to corresponding processes in the foregoing method embodiment,
This is repeated no more.
The embodiment of the present invention four provides a kind of video conference tracking system, and the video conference tracking system includes
Camera, webcam driver device, multiple microphones and above-described embodiment three device end, the webcam driver device
The sound source position based on determined by device end controls camera and executes sound source position tracking, obtains the video pictures of spokesman.
It is understood that arrive, the webcam driver device may include motor and motor drive module, the motor drive module with set
Standby terminal connects, and the turn signal of the foundation sound source position of receiving device terminal drives camera to turn to by driving motor,
It controls camera and executes sound source position tracking, obtain the video pictures of spokesman.
The embodiment of the present invention five provides a kind of computer readable storage medium, the computer readable storage medium
It is stored with computer program, the step of computer program realizes method as described above when being executed by processor.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, is not described in detail or remembers in some embodiment
The part of load may refer to the associated description of other embodiments.
Certainly, the above description is not a limitation of the present invention, and the present invention is also not limited to the example above, this technology
The variations, modifications, additions or substitutions that the technical staff in field is made within the essential scope of the present invention, also should belong to this hair
Bright protection scope.
Claims (9)
1. the method for obtaining sound source position, which comprises the following steps:
Audio signal is acquired by multiple microphones；
According to the audio signal of each microphone acquisition, the microphone in the audio signal of acquisition containing intermediate-freuqncy signal is filtered out；
Compare the collected intermediate-freuqncy signal of screened microphone, captures a Mike for collecting intermediate-freuqncy signal amplitude maximum
Wind, and it is asserted target microphone；
According to the position where target microphone, sound source position is locked.
2. the method according to claim 1 for obtaining sound source position, which is characterized in that the audio letter for filtering out acquisition
Microphone in number containing intermediate-freuqncy signal includes:
Low frequency and high-frequency signal filtering are carried out to the audio signal of each microphone acquisition, detection is after low frequency and high-frequency signal filtering
Output signal whether contain intermediate-freuqncy signal, filter out the microphone in audio signal containing intermediate-freuqncy signal.
3. the method according to claim 2 for obtaining sound source position, which is characterized in that in the audio acquired to each microphone
Signal carries out after low frequency and high-frequency signal filtering further include: carries out shaping to low frequency and the filtered output signal of high-frequency signal
Processing.
4. the method according to claim 1 for obtaining sound source position, which is characterized in that the frequency range of the intermediate-freuqncy signal
For 400HZ~6000HZ.
5. the method according to claim 1 for obtaining sound source position, which is characterized in that be asserted target microphone described
Before further include: the calculating intermediate-freuqncy signal duration is asserted target microphone if the duration reaches preset threshold.
6. a kind of device for obtaining sound source position characterized by comprising
Acquisition module, for acquiring audio signal by multiple microphones；
Screening module, the audio signal for acquiring according to each microphone filter out in the audio signal of acquisition and believe containing intermediate frequency
Number microphone；
Comparison module, compares the collected intermediate-freuqncy signal of screened microphone, and capture collects intermediate-freuqncy signal amplitude maximum
One microphone, and it is asserted target microphone；
Locking module, for locking sound source position according to the position where target microphone.
7. a kind of device end, it is characterised in that: in the memory and can be in institute including memory, processor and storage
The computer program run on processor is stated, the processor realizes such as claim 1 to 5 times when executing the computer program
The step of the method for anticipating.
8. a kind of video conference tracking system, which is characterized in that including camera, webcam driver device, multiple microphones with
And device end as claimed in claim 7, webcam driver device sound source position based on determined by device end control
Camera executes sound source position tracking.
9. a kind of computer readable storage medium, the computer-readable recording medium storage has computer program, and feature exists
In realization is such as the step of claim 1 to 5 any one the method when the computer program is executed by processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811461997.5A CN109655816A (en) | 2018-11-30 | 2018-11-30 | Obtain the method, device and equipment terminal of sound source position |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811461997.5A CN109655816A (en) | 2018-11-30 | 2018-11-30 | Obtain the method, device and equipment terminal of sound source position |
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| CN109655816A true CN109655816A (en) | 2019-04-19 |
Family
ID=66112575
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| CN201811461997.5A Pending CN109655816A (en) | 2018-11-30 | 2018-11-30 | Obtain the method, device and equipment terminal of sound source position |
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| CN110300279A (en) * | 2019-06-26 | 2019-10-01 | 视联动力信息技术股份有限公司 | A kind of method for tracing and device of conference speech people |
| CN111988705A (en) * | 2019-05-21 | 2020-11-24 | 北京小米移动软件有限公司 | Audio processing method, device, terminal and storage medium |
| CN119155595A (en) * | 2024-11-12 | 2024-12-17 | 深圳市芯悦动科技有限公司 | Intelligent noise reduction processing method for wireless microphone chip integration |
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Application publication date: 20190419 |