WO2018006852A1 - 一种音频多通路输出扬声器的处理方法、系统及手机 - Google Patents

一种音频多通路输出扬声器的处理方法、系统及手机 Download PDF

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Publication number
WO2018006852A1
WO2018006852A1 PCT/CN2017/092055 CN2017092055W WO2018006852A1 WO 2018006852 A1 WO2018006852 A1 WO 2018006852A1 CN 2017092055 W CN2017092055 W CN 2017092055W WO 2018006852 A1 WO2018006852 A1 WO 2018006852A1
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audio
channel
processing
path signals
signals
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French (fr)
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陈琼
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JRD Communication Shenzhen Ltd
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JRD Communication Shenzhen Ltd
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S1/00—Two-channel systems
    • H04S1/002—Non-adaptive circuits, e.g. manually adjustable or static, for enhancing the sound image or the spatial distribution
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724—User interfaces specially adapted for cordless or mobile telephones
    • H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724—User interfaces specially adapted for cordless or mobile telephones
    • H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
    • H04M1/72442—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality for playing music files
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/725—Cordless telephones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2420/00—Details of connection covered by H04R, not provided for in its groups
    • H04R2420/03—Connection circuits to selectively connect loudspeakers or headphones to amplifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers
    • H04R3/12—Circuits for transducers for distributing signals to two or more loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/02—Spatial or constructional arrangements of loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S1/00—Two-channel systems
    • H04S1/007—Two-channel systems in which the audio signals are in digital form
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S2400/00—Details of stereophonic systems covered by H04S but not provided for in its groups
    • H04S2400/13—Aspects of volume control, not necessarily automatic, in stereophonic sound systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic

Definitions

  • the present invention relates to the field of electronic devices, and in particular, to a method, a system, and a mobile phone for processing an audio multi-channel output speaker.
  • Audio and video is a system design. Many manufacturers are limited to using better devices based on their own products. They spend more costly accessories to improve listening experience, improve sound quality, and improve audio testing. Very complicated system engineering.
  • an object of the present invention is to provide a method, a system and a mobile phone for processing an audio multi-channel output speaker, which do not need to be mixed, and improve the output quality of the external sound.
  • a method for processing an audio multi-channel output speaker includes the following steps:
  • the four path signals are respectively subjected to frequency division processing, and the data of the four path signals after frequency division processing are stored in sequence;
  • a processing system for an audio multi-channel output speaker comprising:
  • a frequency division memory module configured to separately divide the four path signals, and store the data of the four path signals after frequency division processing in a sequence
  • the conversion output module is configured to respectively perform digital-to-analog conversion processing on the data of the four path signals, and send the converted analog signal data to the speakers respectively corresponding to the four path signals.
  • a mobile phone comprising a processing system for the audio multi-channel output speaker described above.
  • the processing method, system and mobile phone of the audio multi-channel output speaker provided by the invention can be processed separately by using a multi-horn design and by multi-channel independent output without mixing processing, and each sound channel can be processed separately.
  • Increasing the volume of the sound can also improve the defect of the micro-speaker, that is, the performance of the bass is not enough.
  • By separately processing the sound signal the sound field of each channel can be more effectively performed, and the details are more prominent. . It can improve the defect that the two speakers limit the width of the sound field, and can also improve the defects of the two speaker sound signals because the sound mixing of other channels is lost after mixing, which can improve the loudness and the loudness of the two speakers. Sound details.
  • FIG. 1 is a flow chart of a method of processing an audio multi-channel output speaker in the present invention.
  • FIG. 2 is a schematic view showing the horizontal placement of the horn in the processing method of the audio multi-channel output speaker in the present invention.
  • FIG. 3 is a block diagram of a processing system of an audio multi-channel output speaker of the present invention.
  • the present invention provides a method, a system and a mobile phone for processing an audio multi-channel output speaker.
  • a method for processing an audio multi-channel output speaker includes the following steps:
  • the ROM part of the main memory of the mobile phone stores the music file to be played, and the audio signal in the audio and video file passes the codec standard (such as AAC) through the local audio codec algorithm through the management of the mobile phone system platform.
  • the standard or PCM standard is separated by the indication of the independent channel, and the audio track of the left front channel and the right front channel is created, and the separated audio signal includes four path signals.
  • the path signal of 4 is taken as an example, corresponding to Four speaker speakers are set in the phone.
  • S200 Perform frequency division processing on the four path signals, and store the data of the four path signals after frequency division processing in a sequence.
  • the algorithm unit of the mobile phone processor firstly processes the PCM data of the left and right paths transmitted by the system platform, and the algorithm unit loads the frequency dividing algorithm for processing the audio signal.
  • the algorithm unit is similar to the coprocessor used to reduce the computing load of the main processor, thereby achieving the purpose of reducing power consumption.
  • the video file to be played is separated and processed into multiple channels of sound data and sent back to the system platform for management, and finally sent Save to main memory.
  • the system uniformly schedules frames stored in the file system In the buffer, the left and right channel data are arranged in sequence in the frame buffer. It is convenient to call through the clock timing. When the frame buffer is processed.
  • the hardware abstraction layer that needs to be sent to the system platform is used to find and match external devices, configure the path, and after all is completed, the CODEC module can be started.
  • S300 Perform digital-to-analog conversion processing on the data of the four path signals, and send the converted analog signal data to speakers respectively corresponding to the four path signals.
  • the two CODEC modules set by the mobile phone convert digitally two of the four path signals into two speaker horns, and the other two path signals are digital-analog converted and output values in the other two speaker horns.
  • the invention adopts the multi-channel output frequency division processing algorithm to independently output two signals separately on the basis of the original stereo output signal, thereby achieving the purpose of improving the external sound quality.
  • the general algorithm is to put the left and right signals into the amixer of the platform for MIX, and then resample the support of the sampling rate of the platform, and actually support the stereo output of the left and right channels, and the present invention does not need to be left and right.
  • the signal is mixed into the MIX of the amixer, and the video data needs to be encoded and decoded to a standard such as the AAC standard or the PCM standard, and the multi-channel audio data in the video is extracted and separated. Distinguish between the different pathways and save them in audio Flitter layer frame buffer Save in.
  • the signals of the four channels are separately processed and sent to different speakers through different speaker amplifiers for simultaneous playback, so that it needs to be modified into multiple channels based on the left and right stereo dual BUFFER configurations of the android platform.
  • BUFFER configuration from the default one into two, configured into a single input and multiple mode.
  • the audio signals in the audio and video files are separated by an AAC standard or a PCM standard by independent audio channel identification by an audio codec algorithm, and audio tracks of four audio channels are created; the audio channels include a left front channel, a right front channel, and a left end. Rear channel and right rear channel.
  • the audio signals in the audio and video files are separated by codec standards (such as AAC standard or PCM standard) by independent channel identification by local audio codec algorithm, and the left front channel and the right front channel are created. Audio track, indicating separate audio signals including four path signals,
  • S420 Acquire audio and video files and divide the audio data in the audio and video by using a standard of encoding and decoding of the audio and video files;
  • the PCM standard is used to divide the audio data, and the algorithm unit loads the frequency division algorithm for processing the music signal, and processes the PCM data of the left and right paths transmitted by the system platform.
  • S430 Different audio channels are distinguished by different path indications, and the audio channels are divided into a left front channel, a right front channel, a left rear channel, and a right rear channel.
  • the left front channel and the right front channel are used to distinguish the processed data from the transmitted speaker speakers.
  • the path signals of the left front channel, the right front channel, the left rear channel, and the right rear channel are stored in the audio flinger Layer in the frame buffer.
  • the data storage of the left front channel and the right front channel in the clock order is convenient for the system to be uniformly scheduled, for example, by clock sequence.
  • the four path signals are respectively allocated to different codecs in a clock sequence to perform digital-to-analog conversion processing
  • CODEC is a multimedia digital signal codec that is responsible for digital->analog signal conversion (DAC) and analog->digital signal conversion (ADC). Whether the audio accelerator is good or the I/O controller is good, their input and output are pure digital signals, and the signal must be converted by the CODEC on the sound card. The quality of the analog input and output has a significant relationship with the conversion quality of the CODEC module.
  • the I/O controller determines the quality of the internal digital signal, while the CODEC determines the quality of the analog input and output.
  • a CODEC module supports stereo output of up to two speakers. If you implement the functionality of this invention, you must use the support of two CODEC modules. It is connected to the baseband master module via the I2S bus. Two signals are transmitted to two CODEC modules.
  • the present invention sets two CODEC modules, number 1 of the CODEC
  • the module is used as an external device to finally convert the sound signal from a digital signal to an analog signal. Since two or more digital-to-analog converters are supported, the frame buffer is saved by timing. The sound signal in channel 1 and the channel 2 sound signal are sent to the number 1 speaker, and the number 2 speaker, respectively. No. 2 CODEC
  • the module is used as an external device to finally convert the sound signal from a digital signal to an analog signal. Since two or more digital-to-analog converters are supported, the frame buffer is saved by timing. The sound signal of channel 3 on the channel and the sound signal of channel 4 are sent to the number 3 speaker and the number 4 speaker respectively.
  • the present invention provides four speakers. From the figure, we can know that when the vertical display is viewed and viewed, the position of the main sound hole of the No. 2 speaker and the No. 4 speaker is about a few centimeters away, if The two speakers play the left and right sound signals of the left channel as the main speaker, and the right and left sounds broadcasted by the speaker 1 and the speaker 3 must have a face that is approximately a few centimeters away from the center of the two speakers. For the user, there is no such extreme operating habit, so the No. 2 speaker and the No. 1 speaker are used as the left and right sound output, and the experience of the right and left sound output of the first speaker 3 and the speaker 4 is much better, and the listener is away from the device.
  • the position of the horn design needs to be calculated by the formula.
  • the No. 1 and No. 2 horns can also be used as the main horn. Taking the size of the 5.5-inch mobile phone as an example, you can select the No. 1 and No. 2 speakers as the left and right sound output. Similarly, the No. 4 and No. 3 speakers output the right and left sound signals.
  • the cavity design of the four speakers is preferably the same size. And the device is consistent, the four speakers are connected to number 1 and number 2 respectively. On the CODEC module.
  • the ROM portion of the main memory of the mobile phone stores the audio and video files to be played, and the multi-channel sound in the audio and video is separated by the local audio decoding algorithm through the management of the system platform, and the audio tracks of the left and right front and rear right and left paths are created. Then, the four path signals of the left and right and the right and left are sent to the algorithm unit for distribution processing and sent back to the system platform. Unified scheduling of four frames stored in the file system by the system platform In the buffer, it is convenient to use the clock sequence of I2S to be used in the CODEC module. Initialize the frame first during processing Buffer, used to prepare the saved crossover signal, and send the left and right channels to the processing unit for frequency division. The CODEC module performs digital-to-analog conversion processing and sends it to the speaker.
  • the present invention further provides a processing system for an audio multi-channel output speaker, as shown in FIG. 3, which includes:
  • the extraction separation module 510 is configured to retrieve the audio and video files and establish the four path signals respectively by the audio signals in the audio and video files by using independent channel indications; as described above;
  • a frequency division storage module 520 configured to separately divide the four path signals, and store the data of the four path signals after frequency division processing in sequence; as described above;
  • the conversion output module 530 is configured to perform digital-to-analog conversion processing on the data of the four path signals, and send the converted analog signal data to the speakers respectively corresponding to the four path signals.
  • the extraction separation module 410 includes:
  • a separating unit configured to separate audio signals in the audio and video files by an AAC standard or a PCM standard by an audio codec algorithm, and create audio tracks of four audio channels;
  • the audio channel includes a left front channel, a right front channel, a left rear channel, and a right rear channel. Specifically as described above.
  • the separate storage module 520 includes:
  • a frequency dividing unit which is used for retrieving audio and video files and frequency-dividing the multi-channel audio data in the audio and video by the standard of encoding and decoding the audio and video files, as described above;
  • a marking unit for distinguishing different audio channels by different paths, and dividing the audio channel into a left front channel, a right front channel, a left rear channel, and a right rear channel, as described above;
  • a storage unit for storing four path signals of the left front channel, the right front channel, the left rear channel, and the right rear channel in audio order in audio
  • the frame buffer of the flinger layer is as described above.
  • the conversion output module 530 includes:
  • a conversion unit configured to respectively allocate the four path signals to different codecs in a clock sequence for digital-to-analog conversion processing, as described above;
  • an output unit configured to send the converted analog signal data to the speakers that are in one-to-one correspondence with the four path signals.
  • the present invention also provides a processing system for an audio multi-channel output speaker, the processing system including a processor and a memory.
  • the memory is for storing computer instructions
  • the processor executes the computer instructions stored in the memory for executing the above method embodiment or the modules and/or units included in the processing system shown in FIG.
  • the present invention also provides a mobile phone comprising the above described audio multi-channel output speaker processing system.
  • the processing method, system and mobile phone of the audio multi-channel output speaker provided by the invention are separately designed for each sound channel by using a multi-horn design and by multiple independent outputs without mixing processing.
  • the processing can not only improve the volume of the sound, but also improve the defects of the micro-horn, that is, the bass performance is not enough.
  • the sound field of each channel can be more effectively performed.
  • the details are also more prominent. It can improve the defect that the two speakers limit the width of the sound field, and can also improve the defects of the two speaker sound signals because the sound mixing of other channels is lost after mixing, which can improve the loudness and the loudness of the two speakers. Sound details.

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  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
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Abstract

公开了一种音频多通路输出扬声器的处理方法、系统及手机，其中方法包括调取音视频文件并将音视频文件中的音频信号以独立通道的标示分别建立四种通路信号，将所述四种通路信号分别进行分频处理，将分频处理后的所述四种通路信号的数据按序列存储，对所述四种通路信号的数据分别进行数模转换处理，并将转换后的模拟信号数据分别送至与所述四种通路信号一一对应的扬声器中。通过多通路输出结合软件算法在其与原来立体声输出信号的基础上，又多分出两路信号分别独立输出，从而达到改善外放声音质量的目的。

Description

一种音频多通路输出扬声器的处理方法、系统及手机
【技术领域】
本发明涉及电子设备领域，尤其涉及的是一种音频多通路输出扬声器的处理方法、系统及手机。
【背景技术】
互联网技术以及与电子技术的结合程度越来越高。智能化，人性化的要求也越来越高。手机以及便携式使用普及度越来越高，移动消费电子产品所附带的功能涵盖生活生产中，多媒体功能也是消费电子设备用户使用最多的一种应用，怎么提高用户体验，以及用户感受成为了每个厂家都需要考虑的问题。音视频是一个系统设计，很多厂家只限于在自己本产品的基础上使用更加好的器件，花更高成本的配件进行提高听赏感受，改善音质，提高音频测试各种指标都是后端设计非常复杂的系统工程。
目前业内移动消费电子的工业设计越做越薄，对于喇叭器件的要求也是越来越高，超薄，小尺寸，功率以及小音腔设计造成通过喇叭进行外放输出的声音质量与正常音响以及耳机来比有着很大的弱势，怎样提高外放声音的输出质量成为目前急需要解决的问题。
因此，现有技术还有待于改进和发展。
【发明内容】
鉴于上述现有技术的不足，本发明的目的在于提供一种音频多通路输出扬声器的处理方法、系统及手机，不需要做混音处理，提高了外放声音的输出质量。
本发明的技术方案如下：
一种音频多通路输出扬声器的处理方法，包括以下步骤：
A、调取音视频文件并将音视频文件中的音频信号以独立通道的标示分别建立四种通路信号；
B、将所述四种通路信号分别进行分频处理，将分频处理后的所述四种通路信号的数据按序列存储；
C、对所述四种通路信号的数据分别进行数模转换处理，并将转换后的模拟信号数据分别送至与所述四种通路信号一一对应的扬声器中。
一种音频多通路输出扬声器的处理系统，包括：
提取分离模块，用于调取音视频文件并将音视频文件中的音频信号以独立通道的标示分别建立四种通路信号；
分频存储模块，用于将所述四种通路信号分别进行分频处理，将分频处理后的所述四种通路信号的数据按序列存储；
转换输出模块，用于对所述四种通路信号的数据分别进行数模转换处理，并将转换后的模拟信号数据分别送至与所述四种通路信号一一对应的扬声器中。
一种手机，包括权上述的音频多通路输出扬声器的处理系统。
本发明所提供的音频多通路输出扬声器的处理方法、系统及手机，通过使用多喇叭的设计，并通过多路独立输出，不做混音处理，对每个声音通路进行单独的处理，不仅可以提高声音的音量大小，还能够改善微型喇叭的缺陷即低音表现力不够得缺点，通过将声音信号进行单独的处理，可以更有效的将各个通路的声音声场表现的更佳出色，细节也更加突出。可以改善两个喇叭限制了声场的宽度的缺陷，也可以改善两个喇叭声音信号因为混音后使其他通路的声音混音出现损耗的缺陷，可以提高比两个喇叭立体声输出的更高响度和声音细节。
【附图说明】
图1是本发明中音频多通路输出扬声器的处理方法的流程图。
图2是本发明中音频多通路输出扬声器的处理方法中喇叭水平放置示意图。
图3是本发明中音频多通路输出扬声器的处理系统的模块框图。
【具体实施方式】
本发明提供一种音频多通路输出扬声器的处理方法、系统及手机，为使本发明的目的、技术方案及效果更加清楚、明确，以下参照附图并举实例对本发明还详细说明。应当理解，此处所描述的具体实施例仅用以解释本发明，并不用于限定本发明。
请参阅图1，本发明提供的音频多通路输出扬声器的处理方法，包括以下步骤：
S100、调取音视频文件并将音视频文件中的音频信号以独立通道的标示分别建立四种通路信号；
以移动终端的手机为例，手机的主存储器的ROM部分存储有待播放的音乐文件，通过手机系统平台的管理通过本地音频编解码算法，将音视频文件中的音频信号通过编解码标准（比如AAC标准或PCM标准）以独立通道的标示分开，并且创建左前后通道和右前后通道的音轨，标示分开的音频信号包括四种通路信号，本发明实施例中以4中通路信号为例，对应的手机中设置四个扬声器喇叭。
S200、将所述四种通路信号分别进行分频处理，将分频处理后的所述四种通路信号的数据按序列存储。
手机处理器的算法单元界首处理系统平台传送过来的左右通路的PCM数据，算法单元加载处理音频信号的分频算法。此算法单元类似协处理器用来降低主处理器的运算负荷，从而达到降低功耗的目的，待要播放的视频文件将多通路的声音数据进行分离处理并送回系统平台进行管理，并最终送至主存储器保存。系统统一调度存储到文件系统中的frame buffer中，左前后通道数据按序列进行排列在frame buffer 方便通过时钟时序进行调用，当处理完之后的frame buffer 需要送至系统平台的硬件抽象层用来查找和匹配外接设备，配置通路，所有完成之后，即可启动CODEC模块。
S300、对所述四种通路信号的数据分别进行数模转换处理，并将转换后的模拟信号数据分别送至与所述四种通路信号一一对应的扬声器中。
启动CODEC操作，并且将所有I2S或者SLIMBUS都配置成相同的时钟默认为48KHZ，当然也可以配置44.1hz 192HZ等。由于CODEC模块需要保证两组输出采样率相同。传输数据也相同，当两组数据通过I2S 送至到编号1和编号2的CODEC模块（手机中对应四个扬声器喇叭设置两个CODEC模块）。 由于单个CODEC模块是有多组DAC，高低通滤波器，用来将数据进行降噪和将数据信号转换成模拟信号，并通过喇叭功放将其放大并最终通过喇叭输出来。
手机设置的两个CODEC模块将四种通路信号中的两种经过数模转换后输出至两个扬声器喇叭中，将另外两种通路信号经过数模转换后输出值另外两个扬声器喇叭中。本发明是通过多通路输出分频处理算法在其与原来立体声输出信号的基础上，又多分出两路信号分别独立输出，从而达到改善外放声音质量的目的。
下面结合具体实施例对本发明作还的说明。
一般算法是将左右两路信号所入到平台的amixer中进行MIX，然后结合平台的对采样率的支持进行重采样，实际支持左右两声道的立体声输出，而本发明不需要将左右两路信号在送入到amixer中MIX进行混音，而是需要将视频数据通过编解码得标准比如AAC标准或者PCM标准，将视频中的多路音频数据进行提取分离处理。通过不同通路的标示的区分出来，并将其保存在audio flinger 层的frame buffer 中进行保存。结合此处的算法将四个通路的信号作分别处理，并分别通过不同的喇叭放大器送至不同的喇叭中，进行同时播放，从而需要结合android平台左右立体声双BUFFER配置的基础上修改成多路BUFFER的配置，从默认的一进二出，配置成一进多出的模式。
具体包括以下步骤：
S410、通过音频编解码算法将音视频文件中的音频信号通过AAC标准或PCM标准以独立通道的标示分开，并创建四种音频通道的音轨；所述音频通道包括左前通道、右前通道、左后通道和右后通道。
通过手机系统平台的管理通过本地音频编解码算法，将音视频文件中的音频信号通过编解码标准（比如AAC标准或PCM标准）以独立通道的标示分开，并且创建左前后通道和右前后通道的音轨，标示分开的音频信号包括四种通路信号，
S420、调取音视频文件并对音视频文件通过编解码的标准将音视频中的多路音频数据进行分频处理；
例如采用PCM标准对音频数据进行分频处理，算法单元加载处理音乐信号的分频算法，处理系统平台传送过来的左右通路的PCM数据。
S430、通过不同通路的标示区分不同音频通道，将音频通路划分为左前通道、右前通道、左后通道和右后通道。
划分左前后通道和右前后通道用于区分处理的数据对应传输的扬声器喇叭。
S440、在audio flinger 层中申请建立四个frame buffer；
在将四种通路信号保存时，需要在主存储器上申请四个frame buffer，然后分别保存四种通路信号在四个frame buffer。
S450、按时钟顺序将左前通道、右前通道、左后通道和右后通道的通路信号分保存在audio flinger 层的frame buffer 中。
按时钟顺序将左前后通道和右前后通道的数据保存方便系统统一调度，例如通过时钟顺序进行调用。
S460、按时钟顺序将所述四种通路信号分别调配到不同的编译码器中进行数模转换处理；
CODEC就是多媒体数字信号编解码器，主要负责数字->模拟信号转换（DAC）和模拟->数字信号的转换（ADC）。不管是音频加速器好，还是I/O控制器好，他们输入输出的都是纯数字信号，信号就必须经过声卡上的CODEC的转换处理。模拟输入输出的品质和CODEC模块的转换品质有着重大的关系，音频加速 器或I/O控制器决定了内部数字信号的质量，而CODEC则决定了模拟输入输出的好坏。目前一个CODEC模块支持最多两个喇叭的立体声输出。如果实现本次发明的功能，必须要用两个CODEC模块的支持。通过I2S总线分别与基带主控模块相连接。分别将两路信号传给两个CODEC模块。
本发明设置两个CODEC模块，编号1 的CODEC 模块作为外接设备用来最终将声音信号从数字信号转换成模拟信号，由于支持两组以上数模转换器，所以通过时序将保存frame buffer 上的通道1中声音信号，和通道2声音信号分别送至编号1喇叭，和编号2喇叭。编号2 的CODEC 模块作为外接设备用来最终将声音信号从数字信号转换成模拟信号，由于支持两组以上数模转换器，所以通过时序将保存frame buffer 上的通道3的声音信号，和通道4的声音信号分别送至编号3喇叭和编号4喇叭。
请参阅图2，本发明设置四个喇叭，从图中我们可以得知当竖直摆放进行视听的时候，2号喇叭与4号喇叭主出音孔位置离太近大概几公分，如果将此两个喇叭作为主喇叭播放左通道前后声音信号，与喇叭1和喇叭3播出的右前后声音，必须面部正面离两个喇叭中心大概几公分才有效果。对于用户来讲是没有这样的极限的操作习惯的，所以2号喇叭和1号喇叭作为左前后声音输出，一级喇叭3和喇叭4的右前后声音输出的体验会好很多，听者离设备20多公分是一个比较习惯的距离，所以在设计喇叭摆设的位置，需要通过公式来运算得出来的，如果尺寸更大的设备，1号和2号喇叭也是可以做主喇叭。 以手机5.5寸的尺寸为例可以选择1号和2号喇叭作为左前后声音输出，同理4号和3号喇叭输出右前后声音信号，四个喇叭的腔体设计最好相同尺寸。以及器件保持一致，四个喇叭两组分别连接到编号1和编号2 的CODEC模块上。
S470、将转换后的模拟信号数据分别送至与所述四种通路信号一一对应的扬声器中。
由上可知，手机主存储器ROM部分存储有待播放的音视频文件，通过系统平台的管理通过本地音频解码算法将音视频中的多通路声音进行分离，并且创建左前后、右前后通路的音轨。然后将左前后和右前后的四种通路信号分别送至算法单元进行分配处理，并送回系统平台。由系统平台统一调度存储到文件系统中的四个frame buffer中，方便通过I2S的时钟顺序进行分别动用到CODEC模块中。处理过程中首先初始化frame buffer，用于为保存分频信号做准备，并将左右声道送至处理单元进行分频。CODEC模块进行数模转换处理后分别发送至喇叭中。
对应上述处理方法，本发发明还提供一种音频多通路输出扬声器的处理系统，如图3所示，其包括：
提取分离模块510，用于调取音视频文件并将音视频文件中的音频信号以独立通道的标示分别建立四种通路信号；具体如上所述；
分频存储模块520，用于将所述四种通路信号分别进行分频处理，将分频处理后的所述四种通路信号的数据按序列存储；具体如上所述；
转换输出模块530，用于对所述四种通路信号的数据分别进行数模转换处理，并将转换后的模拟信号数据分别送至与所述四种通路信号一一对应的扬声器中。
所述提取分离模块410包括：
分离单元，用于通过音频编解码算法将音视频文件中的音频信号通过AAC标准或PCM标准以独立通道的标示分开，并创建四种音频通道的音轨；
所述音频通道包括左前通道、右前通道、左后通道和右后通道。具体如上所述。
所述分离存储模块520包括：
分频单元，用于调取音视频文件并对音视频文件通过编解码的标准将音视频中的多路音频数据进行分频处理，具体如上所述；
标示单元，用于通过不同通路的标示区分不同音频通道，将音频通路划分为左前通道、右前通道、左后通道和右后通道，具体如上所述；
申请存储单元，用于在audio flinger 层中申请建立四个frame buffer，具体如上所述；
存储单元，用于按时钟顺序将左前通道、右前通道、左后通道和右后通道的四种通路信号分保存在audio flinger 层的frame buffer 中，具体如上所述。
所述转换输出模块530包括：
转换单元，用于按时钟顺序将所述四种通路信号分别调配到不同的编译码器中进行数模转换处理，具体如上所述；
输出单元，用于将转换后的模拟信号数据分别送至与所述四种通路信号一一对应的扬声器中。
本发明还提供一种音频多通路输出扬声器的处理系统，该处理系统包括处理器和存储器。其中，该存储器用于存储计算机指令，该处理器执行该存储器存储的计算机指令，用于执行上述方法实施例或包括图3所示的处理系统所包括的模块和/单元。
本发明还提供一种手机，包括上述的音频多通路输出扬声器的处理系统。
综上所述，本发明所提供的音频多通路输出扬声器的处理方法、系统及手机，通过使用多喇叭的设计，并通过多路独立输出，不做混音处理，对每个声音通路进行单独的处理，不仅可以提高声音的音量大小，还能够改善微型喇叭的缺陷即低音表现力不够得缺点，通过将声音信号进行单独的处理，可以更有效的将各个通路的声音声场表现的更佳出色，细节也更加突出。可以改善两个喇叭限制了声场的宽度的缺陷，也可以改善两个喇叭声音信号因为混音后使其他通路的声音混音出现损耗的缺陷，可以提高比两个喇叭立体声输出的更高响度和声音细节。
应当理解的是，本发明的应用不限于上述的举例，对本领域普通技术人员来说，可以根据上述说明加以改进或变换的技术方案都应属于本发明所附权利要求的保护范围。

Claims (18)

  1. 一种手机，包括一种音频多通路输出扬声器的处理系统，其中，
    提取分离模块，用于调取音视频文件并将音视频文件中的音频信号以独立通道的标示分别建立四种通路信号；所述提取分离模块包括：分离单元，用于通过音频编解码算法将音视频文件中的音频信号通过AAC标准或PCM标准以独立通道的标示分开，并创建四种音频通道的音轨；所述音频通道包括左前通道、右前通道、左后通道和右后通道；
    分频存储模块，用于将所述四种通路信号分别进行分频处理，将分频处理后的所述四种通路信号的数据按序列存储；
    转换输出模块，用于对所述四种通路信号的数据分别进行数模转换处理，并将转换后的模拟信号数据分别送至与所述四种通路信号一一对应的扬声器中；所述转换输出模块包括：转换单元，用于按时钟顺序将所述四种通路信号分别调配到不同的编译码器中进行数模转换处理；输出单元，用于将转换后的模拟信号数据分别送至与所述四种通路信号一一对应的扬声器中。
  2. 根据权利要求1所述的手机，其中，所述分频存储模块包括：
    分频单元，用于调取音视频文件并对音视频文件通过编解码的标准将音视频中的多路音频数据进行分频处理；
    标示单元，用于通过不同通路的标示区分不同音频通道，将音频通路划分为左前通道、右前通道、左后通道和右后通道；
    申请存储单元，用于在audio flinger 层中申请建立四个frame buffer；
    存储单元，用于按时钟顺序将左前通道、右前通道、左后通道和右后通道的通路信号分保存在audio flinger 层的frame buffer 中。
  3. 根据权利要求2所述的手机，其中，所述分频存储模块还包括：
    算法单元，用于加载处理音频信号的分频算法。
  4. 一种音频多通路输出扬声器的处理方法，其中，包括以下步骤：
    A、调取音视频文件并将音视频文件中的音频信号以独立通道的标示分别建立四种通路信号；
    B、将所述四种通路信号分别进行分频处理，将分频处理后的所述四种通路信号的数据按序列存储；
    C、对所述四种通路信号的数据分别进行数模转换处理，并将转换后的模拟信号数据分别送至与所述四种通路信号一一对应的扬声器中。
  5. 根据权利要求4所述的音频多通路输出扬声器的处理方法，其中，所述步骤A具体包括：
    通过音频编解码算法将音视频文件中的音频信号通过AAC标准或PCM标准以独立通道的标示分开，并创建四种音频通道的音轨；
    所述音频通道包括左前通道、右前通道、左后通道和右后通道。
  6. 根据权利要求4所述的音频多通路输出扬声器的处理方法，其中，所述步骤B具体包括：
    B1、调取音视频文件并对音视频文件通过编解码的标准将音视频中的多路音频数据进行分频处理；
    B2、通过不同通路的标示区分不同音频通道，将音频通路划分为左前通道、右前通道、左后通道和右后通道。
  7. 根据权利要求6所述的音频多通路输出扬声器的处理方法，其中，所述步骤B1具体包括：
    调取音视频文件并利用算法单元加载处理音频信号的分频算法，对音视频文件通过编解码的标准将音视频中的多路音频数据进行分频处理。
  8. 根据权利要求4所述的音频多通路输出扬声器的处理方法，其中，所述步骤B具体还包括：
    B3、在audio flinger 层中申请建立四个frame buffer；
    B4、按时钟顺序将左前通道、右前通道、左后通道和右后通道的通路信号分保存在audio flinger 层的frame buffer 中。
  9. 根据权利要求8所述的音频多通路输出扬声器的处理方法，其中，所述步骤B4后具体包括：
    处理完之后的frame buffer送至系统平台的硬件抽象层用来查找和匹配外接设备，配置通路。
  10. 根据权利要求4所述的音频多通路输出扬声器的处理方法，其中，所述步骤C具体包括：
    C1、按时钟顺序将所述四种通路信号分别调配到不同的编译码器中进行数模转换处理；
    C2、将转换后的模拟信号数据分别送至与所述四种通路信号一一对应的扬声器中。
  11. 根据权利要求10所述的音频多通路输出扬声器的处理方法，其中，所述步骤C1具体包括：
    按时钟顺序将所述四种通路信号分两路信号传给两个CODEC模块中进行数模转换处理。
  12. 一种音频多通路输出扬声器的处理系统，其中，包括处理器和存储器，所处存储器用于存储计算机指令，所述处理器执行所述计算机指令，用于：
    调取音视频文件并将音视频文件中的音频信号以独立通道的标示分别建立四种通路信号；
    将所述四种通路信号分别进行分频处理，将分频处理后的所述四种通路信号的数据按序列存储；
    对所述四种通路信号的数据分别进行数模转换处理，并将转换后的模拟信号数据分别送至与所述四种通路信号一一对应的扬声器中。
  13. 根据权利要求12所述的音频多通路输出扬声器的处理系统，其中，所述处理器执行所述调取音视频文件并将音视频文件中的音频信号以独立通道的标示分别建立四种通路信号，具体包括：
    通过音频编解码算法将音视频文件中的音频信号通过AAC标准或PCM标准以独立通道的标示分开，并创建四种音频通道的音轨；
    所述音频通道包括左前通道、右前通道、左后通道和右后通道。
  14. 根据权利要求12所述的音频多通路输出扬声器的处理系统，其中，所述处理器执行所述将所述四种通路信号分别进行分频处理，将分频处理后的所述四种通路信号的数据按序列存储，具体包括：
    调取音视频文件并对音视频文件通过编解码的标准将音视频中的多路音频数据进行分频处理；
    通过不同通路的标示区分不同音频通道，将音频通路划分为左前通道、右前通道、左后通道和右后通道。
  15. 根据权利要求14所述的音频多通路输出扬声器的处理系统，其中，所述处理器还用于：
    利用算法单元加载处理音频信号的分频算法。
  16. 根据权利要求12所述的音频多通路输出扬声器的处理系统，其中，所述处理器还用于：
    在audio flinger 层中申请建立四个frame buffer；
    按时钟顺序将左前通道、右前通道、左后通道和右后通道的通路信号分保存在audio flinger 层的frame buffer 中。
  17. 根据权利要求12所述的音频多通路输出扬声器的处理系统，其中，所述处理器执行所述对所述四种通路信号的数据分别进行数模转换处理，并将转换后的模拟信号数据分别送至与所述四种通路信号一一对应的扬声器中，具体包括：
    按时钟顺序将所述四种通路信号分别调配到不同的编译码器中进行数模转换处理；
    将转换后的模拟信号数据分别送至与所述四种通路信号一一对应的扬声器中。
  18. 根据权利要求17所述的音频多通路输出扬声器的处理方法，其中，所述处理器执行所述按时钟顺序将所述四种通路信号分别调配到不同的编译码器中进行数模转换处理，具体包括：
    按时钟顺序将所述四种通路信号分两路信号传给两个CODEC模块中进行数模转换处理。
PCT/CN2017/092055 2016-07-06 2017-07-06 一种音频多通路输出扬声器的处理方法、系统及手机 Ceased WO2018006852A1 (zh)

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