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WO2018082233A1 - Appareil et procédé pour réaliser une conversion audio stéréo - Google Patents

Appareil et procédé pour réaliser une conversion audio stéréo Download PDF

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Publication number
WO2018082233A1
WO2018082233A1 PCT/CN2017/076990 CN2017076990W WO2018082233A1 WO 2018082233 A1 WO2018082233 A1 WO 2018082233A1 CN 2017076990 W CN2017076990 W CN 2017076990W WO 2018082233 A1 WO2018082233 A1 WO 2018082233A1
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WO
WIPO (PCT)
Prior art keywords
channel
channel signal
signal
speaker
processor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2017/076990
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English (en)
Chinese (zh)
Inventor
吴文飞
吴志华
金修禄
李林芳
冯思勤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JRD Communication Shenzhen Ltd
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JRD Communication Shenzhen Ltd
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Filing date
Publication date
Application filed by JRD Communication Shenzhen Ltd filed Critical JRD Communication Shenzhen Ltd
Publication of WO2018082233A1 publication Critical patent/WO2018082233A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2430/00—Signal processing covered by H04R, not provided for in its groups

Definitions

  • the present invention relates to the field of mobile terminal technologies, and in particular, to an apparatus and method for implementing audio single-ended transform stereo.
  • Human hearing has the ability to distinguish the position of the sound source. Especially when there are multiple sound sources simultaneously, people can perceive the position distribution of each sound source in space. From this perspective, all the sounds emitted by nature are stereo, such as thunder, train, wind, rain and so on.
  • stereo has the following advantages: (1) having the sense of orientation and distribution of each sound source; (2) improving the clarity and intelligibility of information; (3) improving the sense of presence and hierarchy of the program. And transparency.
  • Dual-speaker stereo boosts volume and provides a more natural sound field experience, but is limited by slimming and there is no extra space to assemble dual speakers on the unit.
  • the present invention aims to provide an apparatus and method for realizing audio conversion stereo, and expanding a single speaker in the form of a battery back cover accessory to realize audio mono conversion to two-channel stereo to solve the prior art.
  • the technical problem that the assembled dual speakers are limited by the space of the slimming of the mobile terminal on the whole machine.
  • a device for implementing audio conversion stereo comprising: a processor and a battery back cover;
  • the processor processes the audio signal into a first channel signal and a second channel signal and determines whether the battery back cover mounts the second channel speaker, and selects the first channel signal and the second channel signal according to the determination result. Both are played by the processor, or the first channel signal and the second channel signal are respectively played by the processor and the battery back cover.
  • the device for implementing audio conversion stereo wherein the processor includes a sound processing module, a mode switching module, a playing module, and a first channel speaker;
  • a sound processing module configured to process the audio signal into a first channel signal and a second channel signal
  • the mode switching module is configured to determine whether the battery back cover is mounted on the second channel speaker according to the high and low levels of the input detection signal, and switch the play mode of the mobile terminal according to the determination result to open and close the audio power amplifier module;
  • a playing module configured to select, according to an open/close state of the audio power amplifier module, the first channel signal and the second channel signal to be played by the first channel speaker in the processor, or the first channel signal and the second channel
  • the signals are respectively played by the first channel speaker in the processor and the second channel speaker in the battery back cover.
  • the device for implementing audio conversion stereo wherein the battery back cover comprises an audio power amplifier module, an ID recognition module, and a second channel speaker;
  • An audio power amplifier module for performing power amplification on the second channel signal
  • the ID identification module is configured to output a detection signal corresponding to the high and low levels according to whether the battery back cover is mounted on the second channel speaker.
  • the device for implementing audio to convert stereo wherein the mode switching module specifically includes:
  • the low level unit is configured to determine that the mobile terminal does not mount the second channel speaker when the input detection signal is low, switch the play mode of the mobile terminal to mono, single speaker, and turn off the audio power amplifier module. ;
  • the high level unit is configured to determine that the mobile terminal has mounted the second channel speaker when the input detection signal is high level, switch the play mode of the mobile terminal to two channels, dual speakers, and turn on the audio power amplifier module. .
  • the device for implementing audio to convert stereo wherein the playing module specifically includes:
  • a first playing unit configured to simultaneously input the first channel signal and the second channel signal into the first channel speaker of the processor when the audio power amplifier module is turned off, and play the first channel signal
  • a second playing unit configured to input the first channel signal into the first channel speaker of the processor for playing when the audio power amplifier module is turned on, and input the second channel signal to the second channel speaker of the battery back cover Play in.
  • a method for implementing audio conversion stereo comprising:
  • the processor processes the audio signal into a first channel signal and a second channel signal
  • step B specifically includes:
  • step B1 specifically includes:
  • the detection signal corresponding to the high and low level is outputted by the second channel speaker
  • step B2 specifically includes:
  • the audio power amplifier module When the audio power amplifier module is turned on, the first channel signal is input to the first channel speaker of the processor for playing, and the second channel signal is input to the second channel speaker of the battery back cover for playing.
  • step B22 further comprises: performing power amplification on the second channel signal by using the audio power amplifier module.
  • the present invention provides an apparatus and method for realizing audio conversion stereo, in which a first channel signal is played by a first channel speaker of a mobile terminal processor, and a second channel is played by a second channel speaker of a battery back cover.
  • the channel signal the sound is played through two speakers, that is, the sound comes from different sound sources, and the stereo effect can be realized;
  • the speaker of the other channel is expanded in the form of a battery back cover accessory, without occupying too much internal space of the mobile terminal;
  • the channel is stereo, and the two channels are small compared to the multi-channel, which is more convenient to carry around.
  • FIG. 1 is a structural diagram of an apparatus for implementing audio conversion stereo provided by the present invention.
  • FIG. 2 is a flow chart of a method for implementing audio conversion stereo provided by the present invention.
  • the present invention provides an apparatus and method for realizing audio conversion stereo.
  • the present invention will be further described in detail below. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
  • FIG. 1 is a structural diagram of an apparatus for implementing audio conversion stereo provided by the present invention, the apparatus comprising: a processor 100 and a battery back cover 200; the processor supplies power to a battery back cover; The battery back cover is common;
  • the processor 100 includes a sound processing module 110, a mode switching module 120, a playing module 130, and a first channel speaker 140.
  • the sound processing module, the mode switching module, and the playing module are integrated on a PCB of the mobile terminal.
  • the battery back cover 200 includes an audio power amplifier module 210, an ID recognition module 220, and a second channel speaker 230.
  • the ID recognition module 210 and the audio power amplifier module 220 are integrated on a PCB of the battery back cover.
  • the sound processing module 110 processes the audio signal into a first channel signal and a second channel signal; meanwhile, the ID recognition module 210 outputs a corresponding high and low level according to whether the battery back cover is mounted on the second channel speaker. Detection signal.
  • the detection signal is input to the processor 110.
  • the mode switching module 120 in the processor 110 determines whether the battery back cover is mounted on the second channel speaker according to the high and low levels of the input detection signal, and switches the playback of the mobile terminal according to the determination result. Mode to open and close the audio power amplifier module.
  • the low level unit in the mode switching module 120 determines that the mobile terminal does not mount the second channel speaker, switches the playback mode of the mobile terminal to mono, single speaker, and turns off the audio.
  • a power amplifier module when the audio power amplifier module 220 is turned off, the first playback unit in the playback module 130 simultaneously inputs the first channel signal and the second channel signal into the first channel speaker 140 of the processor 100, and One channel signal is played.
  • the high level unit in the mode switching module 120 determines that the mobile terminal has mounted the second channel speaker 230, switches the play mode of the mobile terminal to two channels, dual speakers, and turns on.
  • the audio power amplifier module 220 when the audio power amplifier module 220 is turned on, the second playback unit in the playback module 130 inputs the first channel signal into the first channel speaker 140 of the processor 100 for playback, and the second channel signal input Power amplification is performed into the audio power amplifier module 220 in the battery back cover 200, and input to the second channel speaker for playback.
  • the present invention also provides a method for implementing audio conversion stereo. As shown in FIG. 2, the method includes:
  • the processor processes the audio signal into a first channel signal and a second channel signal
  • a channel is a separate audio signal that is captured or played back in different spatial locations during recording or playback, so the number of channels is the number of sources when the sound is recorded or the number of speakers corresponding to the playback.
  • the sound is played through two channels of speakers, and the audio signal of the sound is processed into two channel signals when the sound recording is required.
  • the step S1 specifically includes:
  • the audio signal input to the mobile terminal includes the first channel signal and the second channel signal.
  • the first channel signal is a left channel signal
  • the second channel signal is a right channel signal; when the first channel signal is a right channel signal, the second channel signal is a left channel signal.
  • a speaker on the back cover of the battery is attached.
  • the device When the second channel speaker is mounted on the back cover of the battery, the device includes two speakers, and the two speakers can play stereo; when the battery back cover If the second channel speaker is not mounted, the device only contains one channel speaker, and only one channel can be played through one channel speaker.
  • the processor After processing the audio signal into two channel signals, it is necessary to determine whether the battery back cover is mounted with the second channel speaker, and then the first channel signal and the second channel signal are input to the processor.
  • the first channel signal and the second channel signal are respectively input to the processor and the battery back cover for playing, and the step S2 specifically includes:
  • Step 21 Determine whether the battery back cover mounts the second channel speaker according to the high and low levels of the input detection signal, and switch the play mode of the mobile terminal according to the determination result to open and close the audio power amplifier module.
  • the ID identification module outputs a detection signal corresponding to the high and low levels according to whether the second channel speaker is mounted, and feeds the detection signal to the mode switching module through the ID identification module.
  • the minimum input high voltage V0 is set.
  • the input detection signal is a high voltage; when the voltage of the input detection signal is less than V0, the input detection signal is a low voltage.
  • the mode switching module When the mode switching module receives the input detection signal to be low level, it can be determined that the mobile terminal does not mount the second channel speaker. At this time, the mobile terminal only includes one channel speaker, and the mobile terminal is switched.
  • the playback mode is mono, single speaker; the second channel signal does not need to be played through the second channel speaker, then the audio power amplifier module that powers the second channel signal is turned off.
  • the mode switching module When the mode switching module receives the input detection signal to a high level, it can be determined that the mobile terminal has mounted the second channel speaker. At this time, the mobile terminal includes two channels, that is, the first channel in the processor. The second channel speaker in the speaker and the battery back cover switches the playback mode of the mobile terminal to two channels and two speakers; at this time, the second channel signal needs to be played through the second channel speaker, then the second channel is turned on.
  • An audio power amplifier module that performs power amplification on a channel signal.
  • Step 22 according to the opening and closing state of the audio power amplifier module, selecting to select the first channel signal and the second channel signal by the first channel speaker in the processor, or the first channel signal and the second channel signal respectively Played by the first channel speaker in the processor and the second channel speaker in the battery back cover.
  • the step 22 includes:
  • Step 221 When the audio power amplifier module is turned off, simultaneously input the first channel signal and the second channel signal into the first channel speaker in the processor, and play the first channel signal;
  • the audio power amplifier module When the audio power amplifier module is turned off, only one first channel speaker is included in the device. Both the first channel speaker and the second channel speaker are input to the first channel speaker, but only the first channel signal can be played in the first channel speaker, and the second channel signal is not played.
  • the first channel signal is input to the first channel speaker of the processor for playing
  • the second channel signal is input to the second channel speaker of the battery back cover for playing.
  • the device When the audio power amplifier module is turned on, the device includes two speakers, one is the first channel speaker in the processor, and the other is the second channel speaker in the battery back cover.
  • the audio power amplifier module When the audio power amplifier module is switched to a two-channel, two-speaker, the first channel signal and the second channel signal are respectively input into the first channel speaker and the second channel speaker for playback.
  • the first channel signal is directly input to the first channel speaker for playing; and the second channel signal is transmitted to the audio power amplifier module, and the second channel signal is power amplified by the audio power amplifier module, and the amplified first
  • the two-channel signal is input to the second channel speaker for playback.
  • the first channel signal is played in the first channel speaker
  • the second channel signal is played in the second channel speaker
  • the sound played by the two channels forms a stereo effect
  • the first channel speaker is included in the processor and is the main channel speaker.
  • the first channel speaker can be a left channel speaker or a right channel speaker.
  • the second channel speaker is a right channel speaker, and the first channel signal of the left channel signal is input to the first channel speaker of the left channel speaker;
  • the first channel speaker is a right channel speaker
  • the second channel speaker is a left channel speaker, and the first channel signal for the right channel signal is input to the first channel speaker that is a right channel speaker.
  • Embodiment 1 The first channel speaker of the apparatus for realizing audio conversion stereo in the embodiment 1 is a left channel speaker, and the second channel speaker is a right channel speaker. Set the threshold voltage V0 to 3.5V.
  • the processor of the mobile terminal supplies power to the battery back cover.
  • the input voltage is 4V. At this time, if the input voltage is greater than the threshold voltage V0, the input detection signal is a high level signal.
  • the device When the input detection signal is a high level signal, the device is mounted with a second channel speaker, which is a second channel speaker, which is a right channel speaker. At this time, the playback mode of the mobile terminal is controlled to be two channels, two speakers, and the audio power amplifier module is turned on.
  • the first channel signal and the second channel signal are both played by the processor, or the first channel signal and the second channel signal are respectively played by the processor and the battery back cover.
  • the left channel signal in the music audio signal is input to the left channel speaker of the processor for playing; the right channel signal in the music audio signal is amplified by the audio power amplifier module, and then input to Play in the right channel speaker of the battery back cover.
  • Embodiment 2 The first channel speaker of the apparatus for realizing audio conversion stereo in the embodiment 2 is a left channel speaker, and the second channel speaker is not mounted. Set the threshold voltage V0 to 3.5V.
  • the processor of the mobile terminal supplies power to the battery back cover.
  • the input voltage is 0.25V. At this time, if the input voltage is less than the threshold voltage V0, the input detection signal is a low level signal.
  • the device When the input detection signal is a low level signal, the device does not mount the second channel speaker. At this time, the playback mode of the mobile terminal is mono, single speaker, and the audio power amplifier module is turned off.
  • the first channel signal and the second channel signal are both played by the processor, or the first channel signal and the second channel signal are respectively played by the processor and the battery back cover.
  • the left channel signal and the right channel signal in the music audio signal are input into the left channel speaker of the processor, and the left channel speaker plays only the left channel signal.
  • the present invention provides an apparatus and method for implementing audio conversion stereo, in which a first channel signal is played by a first channel speaker of the processor, and a second channel is played by a second channel speaker of the battery back cover.
  • Channel signal the sound is played through two speakers, that is, the sound comes from different sound sources, can achieve stereo effect; expand the other channel speaker in the form of battery back cover attachment, without occupying too much internal space; through two channels
  • the dual channel is small compared to the multi-channel, which is more convenient to carry around.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Stereophonic System (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Telephone Function (AREA)

Abstract

L'invention concerne un appareil et un procédé pour réaliser une conversion de fréquence audio en stéréo. L'appareil comprend un processeur, et un couvercle arrière de batterie. Le processeur traite un signal audio en un premier signal de canal sonore et un second signal de canal sonore, et détermine si un second haut-parleur de canal sonore est monté sur le couvercle arrière de batterie. Le premier signal de canal sonore et le second signal de canal sonore sont sélectionnés, selon un résultat de détermination, pour la lecture par le processeur, ou le premier signal de canal sonore et le second signal de canal sonore sont respectivement lus par le processeur et le couvercle arrière de batterie. Dans l'appareil, le premier signal de canal sonore est lu par un premier haut-parleur de canal du processeur, et le second signal de canal sonore est lu par le second haut-parleur de canal du couvercle arrière de batterie. Comme des sons sont lus par deux haut-parleurs, c'est-à-dire qu'ils proviennent de sources sonores différentes, un effet stéréo peut être obtenu. L'autre haut-parleur est étendu sous la forme d'un accessoire du couvercle arrière de batterie, ce qui réduit l'espace interne occupé.
PCT/CN2017/076990 2016-11-04 2017-03-16 Appareil et procédé pour réaliser une conversion audio stéréo Ceased WO2018082233A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610964655.X 2016-11-04
CN201610964655.XA CN106375904A (zh) 2016-11-04 2016-11-04 一种实现音频变换立体声的装置及方法

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CN106375904A (zh) * 2016-11-04 2017-02-01 惠州Tcl移动通信有限公司 一种实现音频变换立体声的装置及方法
CN107124487A (zh) * 2017-04-27 2017-09-01 惠州Tcl移动通信有限公司 一种移动终端后盖、移动终端及其音频驱动的控制方法
CN109040384B (zh) * 2018-10-26 2021-08-03 深圳市万普拉斯科技有限公司 可实现立体声的移动终端
CN109521990B (zh) * 2018-11-20 2022-06-21 深圳市吉美文化科技有限公司 音频播放控制方法、装置、电子设备及可读存储介质
CN112468632A (zh) * 2019-09-06 2021-03-09 青岛海信移动通信技术股份有限公司 背夹电池装置、移动终端及音频播放控制方法
CN111273887A (zh) * 2020-01-19 2020-06-12 深圳巴金科技有限公司 一种音频信号分流回传方法及系统
CN111629304A (zh) * 2020-05-15 2020-09-04 维沃移动通信有限公司 扬声器控制方法、装置及电子设备
CN116208908A (zh) * 2023-03-03 2023-06-02 Oppo广东移动通信有限公司 录音文件播放方法、装置、电子设备及存储介质

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