WO2022166708A1 - 音频播放方法、系统、装置、车辆及存储介质 - Google Patents

音频播放方法、系统、装置、车辆及存储介质 Download PDF

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Publication number
WO2022166708A1
WO2022166708A1 PCT/CN2022/073991 CN2022073991W WO2022166708A1 WO 2022166708 A1 WO2022166708 A1 WO 2022166708A1 CN 2022073991 W CN2022073991 W CN 2022073991W WO 2022166708 A1 WO2022166708 A1 WO 2022166708A1
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audio
audio signals
different frequencies
audio signal
transmission duration
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PCT/CN2022/073991
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English (en)
French (fr)
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于豪
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广州橙行智动汽车科技有限公司
广州小鹏汽车科技有限公司
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Publication of WO2022166708A1 publication Critical patent/WO2022166708A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
    • H04S7/30—Control circuits for electronic adaptation of the sound field
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements

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  • the present application relates to the technical field of vehicle audio, and in particular, to an audio playback method, an audio playback system, an audio playback device, a corresponding vehicle, and a corresponding computer storage medium.
  • the configuration inside the vehicle also tends to be diversified; for example, the car audio system.
  • the user can play the sound he wants to hear at any time through the car audio system, which improves the user's driving experience.
  • the traditional car music playback uses one channel of speakers corresponding to one channel of audio signals, such as front left, front right, rear left, rear right, center and other channels, which can further improve the user's hearing.
  • one channel of speakers corresponding to one channel of audio signals such as front left, front right, rear left, rear right, center and other channels, which can further improve the user's hearing.
  • the speakers installed in the car are actually separated by two-channel signals. That is, the sound source actually heard can only be equivalent to the application expansion of the two-channel signal to multiple speakers.
  • the signals played by the speakers of different channels at the same time are the same, and the actual audio surrounds the sense of surround is limited.
  • the present application is proposed to provide an audio playback method, a corresponding audio playback system, a corresponding audio playback device, and a corresponding vehicle that overcome the above problems or at least partially solve the above problems and a corresponding computer storage medium.
  • the present application discloses an audio playback method, which is applied to a vehicle, and the method includes:
  • the target audio signal includes audio signals of different frequencies
  • the audio signals of different frequencies are played according to the preset transmission duration, wherein the total transmission duration of the audio signals of different frequencies does not exceed the hearing retention time for the audio signals to reach the human ear.
  • the vehicle includes a plurality of speakers for playing audio signals of different channels; the audio signals of different frequencies are played according to the preset transmission duration, including:
  • the audio signals of different frequencies are played according to the audio transmission duration.
  • the position distance includes a plurality of position distances; the audio signals of different frequencies are signal-connected according to a preset audio sequence;
  • the acquiring the correspondence between the audio signals of different frequencies and each speaker includes:
  • a corresponding relationship between the sorted plurality of speakers and the audio signals in the preset audio sequence is established.
  • the audio signals of different frequencies include a first audio signal and a second audio signal; and calculating the audio transmission duration of the audio signals of different frequencies according to the corresponding relationship and the position distance, including :
  • the transmission duration difference is used to represent the difference between the transmission durations of audio signals of different frequencies
  • the transmission durations of audio signals of different frequencies are determined according to a plurality of the transmission duration differences and the hearing persistence time of the human ear.
  • the total transmission duration of the audio signals of different frequencies does not exceed the auditory persistence time of the human ear .
  • the application also discloses an audio playback system, which is applied to a vehicle, and the system includes an audio source module, a DSP digital signal processing module and a speaker module;
  • the audio source module is used to provide a two-channel audio signal
  • the DSP digital signal processing module is used to process the two-channel audio signal to obtain a target audio signal; the target audio signal includes audio signals of different frequencies;
  • the speaker module is configured to play the audio signals of different frequencies according to a preset transmission duration, wherein the total transmission duration of the audio signals of different frequencies does not exceed the auditory retention time for the audio signals to reach the human ear.
  • the system further includes a multi-channel power amplifier module; the multi-channel power amplifier module is configured to transmit the target audio signal to the speaker module, and push the speaker module to play the target audio signal
  • the speaker module includes a front left speaker module, a front right speaker module, a center speaker module, a surround left speaker module, a surround right speaker module and a subwoofer module.
  • the application also discloses an audio playback device, which is applied to a vehicle, and the device includes:
  • a two-channel audio signal processing module is used to obtain a two-channel audio signal, and process the two-channel audio signal to obtain a target audio signal; the target audio signal includes audio signals of different frequencies;
  • the audio signal playing module is configured to play the audio signals of different frequencies according to the preset transmission duration, wherein the total transmission duration of the audio signals of different frequencies does not exceed the auditory retention time for the audio signals to reach the human ear.
  • the vehicle includes a plurality of speakers for playing audio signals of different channels;
  • the audio signal playback module includes:
  • Correspondence acquisition submodule for acquiring the corresponding relationship between the audio signals of the different frequencies and each speaker
  • the position distance determination sub-module is used to determine the position distance between each speaker and the human ear;
  • a transmission duration calculation submodule configured to calculate the audio transmission duration of the audio signals of different frequencies according to the corresponding relationship and the position distance;
  • the audio signal transmission sub-module is configured to play the audio signals of different frequencies according to the audio transmission duration.
  • the position distance includes a plurality of position distances; the audio signals of different frequencies are signal-connected according to a preset audio sequence; the corresponding relationship acquisition sub-module includes:
  • a position distance sorting unit configured to sort the plurality of speakers in an order from far to near according to the plurality of position distances
  • the corresponding relationship establishing unit is used for establishing the corresponding relationship between the sorted plurality of speakers and the audio signals in the preset audio sequence.
  • the audio signals of different frequencies include a first audio signal and a second audio signal;
  • the transmission duration calculation submodule includes:
  • a position distance obtaining unit configured to obtain a first position distance and a second position distance from the plurality of position distances
  • a transmission duration calculation unit configured to calculate the transmission duration by using the first position distance, the second position distance and the preset audio transmission speed
  • An audio signal acquisition unit configured to acquire, according to the corresponding relationship, a first audio signal corresponding to the first speaker corresponding to the first position distance, and a second audio signal corresponding to the second speaker corresponding to the second position distance audio signal;
  • a transmission duration difference determining unit configured to use the transmission duration as the transmission duration difference between the first audio signal and the second audio signal; the transmission duration difference is used to represent the difference between the transmission durations of audio signals of different frequencies value;
  • a transmission duration determination unit configured to determine transmission durations of audio signals of different frequencies according to a plurality of the transmission duration differences and the hearing persistence time of the human ear.
  • the total transmission duration of the audio signals of different frequencies does not exceed the auditory persistence time of the human ear .
  • the present application also discloses a vehicle, comprising: the audio playback device, a processor, a memory, and a computer program stored on the memory and capable of running on the processor, the computer program being executed by the processor When executed, any one of the steps of the audio playback method is implemented.
  • the present application also discloses a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, any one of the steps of the audio playback method is implemented.
  • two-channel audio signals can be processed to obtain audio signals including different frequencies, and the audio signals of different frequencies can be played according to the preset transmission duration, wherein the total transmission duration of the audio signals of different frequencies does not exceed the audio signal.
  • Hearing dwell time that reaches the human ear.
  • time division multiplexing technology is used to select audio signals, so that the audio signals obtained by each channel in a certain time belong to audio signals of different frequencies, and achieve a near-real multi-channel decoding. Presence surround effect.
  • Fig. 1 is the framework schematic diagram of a kind of audio playback system provided by the application
  • Fig. 2 is the step flow chart of a kind of audio playing method provided by the application
  • FIG. 3 is a schematic diagram of a processed target audio signal provided by the present application.
  • FIG. 4 is a structural block diagram of an audio playback device provided by the present application.
  • the traditional car music playback uses one channel of speakers corresponding to one channel of audio signals, usually in order to further improve the user's listening experience, multiple speakers are set in different directions in the car, and multiple speakers are used to play at the same time.
  • the way of sound enables users to enjoy a stereo experience.
  • the in-vehicle audio system of the vehicle decodes the mono audio or dual audio to obtain at most two channels, so the speakers installed in the car are actually separated by two-channel signals.
  • the signals played by the different channel speakers at the same time are the same, and the actual audio surrounds the sense of surround is limited.
  • One of the core ideas of this application is to use the persistence of hearing characteristics of the human ear, and on the basis of the persistence of vision characteristics of the human ear, use time division multiplexing technology to select audio signals, so that within a certain time, each The audio signals obtained by the channels are of different frequencies, so that the sounds of various musical instruments can be separated, so as to achieve a near-realistic surround effect of multi-channel decoding.
  • the audio playback system can be applied to a vehicle.
  • the audio playback system in the present application may include a sound source module 10, a DSP ( Digital Signal Processing, digital signal processing) digital signal processing module 20, speaker module 40 and power management module 50, which may also include power amplifier module 30.
  • DSP Digital Signal Processing, digital signal processing
  • the audio source module 10 can be used to provide a two-channel audio signal. It is mainly used to provide standard stereo audio signals. Since most of the sound sources played on the vehicle are two-channel programs, the sound source module 10 can include a two-channel sound source module, so the standard stereo audio provided at this time can be two-channel audio. channel audio signal.
  • the DSP digital signal processing module 20 may process the two-channel audio signal to obtain the target audio signal, and the obtained target audio signal may include audio signals of different frequencies.
  • the processed two-channel audio can be analog audio signals and digital audio signals.
  • the audio signals can be processed by amplifying, attenuating, filtering, extracting, switching, delaying, and phase processing. After the above-mentioned processing is performed on the provided two-channel audio signal, a target audio signal including audio signals of different frequencies can be obtained.
  • the power amplifier module 30 can be used to transmit the target audio signal to the speaker module 40, and push the speaker module 40 to play the target audio signal, which can be specifically expressed as amplifying the audio signal and pushing the speaker module to sound.
  • the power amplifier module 30 used to drive the speaker module can be a multi-channel power amplifier module, and the multi-channel power amplifier module can be used to amplify audio of different frequencies. signal and the speaker modules that drive the different channels.
  • the speaker module 40 can be used to play audio signals of different frequencies according to the preset transmission duration, which can be specifically expressed as receiving the amplified audio signals transmitted by the multi-channel power amplifier module, and converting the audio signals transmitted from the power amplifier into sound signals.
  • the preset transmission duration can be specifically expressed as receiving the amplified audio signals transmitted by the multi-channel power amplifier module, and converting the audio signals transmitted from the power amplifier into sound signals.
  • a plurality of speaker modules of different channels can be used to play the above-mentioned audio signals of different frequencies, and ensure that the total transmission time of the audio signals of different frequencies does not exceed Hearing dwell time for an audio signal to reach the human ear.
  • the speaker modules 40 of multiple different channels may include a front left speaker module, a front right speaker module, a center speaker module, a surround left speaker module, a surround right speaker module and a subwoofer module. Applications are not restricted.
  • the use of multiple speaker modules with different channels to play the above audio signals of different frequencies can mainly be distinguished by frequency.
  • the signal of the ultra-low frequency band ⁇ 200Hz only enters the ultra-bass channel, and the 200-2000Hz signal enters the mid-range channel, the 2000-20000Hz signal enters the treble channel; and because the subwoofer channel replays low-frequency signals below 200Hz, there is no obvious sense of orientation, so the subwoofer channel is directly connected by the main signal of the left and right channels plus a low-pass filter. After the mixed bass signal can be.
  • the power management module 50 is also required to provide the aforementioned modules when processing audio signals. power supply.
  • the power management module 50 can provide stable and appropriate voltage and current for each of the aforementioned functional modules. It should be noted that the power supply voltage and current stability and ripple size required by each chip or triode circuit have certain conventional requirements. , the provided voltage and current can be determined according to the voltage and current required for each chip to work, which is not limited in this application.
  • the auditory persistence characteristic of the human ear can be used, and the time-division multiplexing technology can be used to select audio signals, so that the audio signals obtained by each channel in a certain time belong to the audio frequency of different frequencies. signal, to achieve a near-real multi-channel decoding of the presence of the surround effect.
  • step flow chart of a kind of sound source playing method provided by the present application is applied to the vehicle, and can specifically include the following steps:
  • Step 201 obtaining a two-channel audio signal, and processing the two-channel audio signal to obtain a target audio signal;
  • the target audio signal includes audio signals of different frequencies;
  • the sound source provided on the vehicle can be processed to obtain audio containing different frequencies. signal, so that the audio signals obtained by the speakers of each channel are of different frequencies to achieve a telepresence surround effect.
  • the two-channel audio signal can be provided by the two-channel audio source module, and the two-channel audio signal can be amplified, attenuated, filtered, extracted, switched, delayed, and phase processed by the DSP digital signal processing module. , to obtain audio signals of different frequencies.
  • FIG. 3 a schematic diagram of the processed target audio signal provided by the present application is shown, mainly taking the time division multiplexing of the left channel audio signal in the two-channel audio signal as an example.
  • the left channel audio signal at the certain time point can be processed to obtain a certain time
  • the target audio signals of the segments include audio signals of different frequencies.
  • time division multiplexing of the right channel audio signal in the two-channel audio signal can be equivalent to the time division multiplexing of the left channel audio signal, wherein the time division multiplexed left channel audio signal and the right channel audio signal are time-division multiplexed.
  • the frequencies of the signals may be the same or different, and the different audio transmission durations between the two may be the same or different, which are not limited in this application.
  • Step 202 Play the audio signals of different frequencies according to the preset transmission duration, wherein the total transmission duration of the audio signals of different frequencies does not exceed the auditory retention time for the audio signals to reach the human ear.
  • audio signals of different frequencies can be played, and specifically, the audio signals of different frequencies can be played according to different transmission durations, so as to further control different frequencies by controlling different transmission durations
  • the total transmission time of the audio signal does not exceed the hearing retention time for the audio signal to reach the human ear.
  • the human ear may have the phenomenon of acoustic persistence, that is, the human ear may have a hearing persistence time, which can be specifically expressed as the human's perception of the sound will remain for a short period of time after the sound disappears. If the time interval between the two sounds arriving at the human ear is less than 50ms, the sound will not feel discontinuous due to the persistence of sound perception in the human ear.
  • the principle can be the reflected sound that arrives within 50ms after the direct sound arrives The direct sound will be intensified, and the "strong" reflected sound that arrives 50ms after the arrival of the direct sound will produce an "echo". Then, the total transmission time of audio signals of different frequencies is controlled not to exceed the auditory persistence time of the audio signals to the human ear, which can ensure that the presence surround effect can be achieved through the audio signals of different frequencies within the auditory persistence time of the human ear.
  • the presence of surround effect through audio signals of different frequencies can be achieved by playing the audio signals with multiple speakers in the vehicle, and multiple speakers can be used to play audio signals of different channels, that is, different
  • the audio signals of the frequencies are respectively used as audio signals of different channels.
  • the sound signals of different frequencies may correspond to the front left channel, the surround left channel, the front right channel, the surround right channel, and the center channel, respectively.
  • the multiple speakers for playing audio signals of different channels may include a front left speaker, a front right speaker, a center speaker, a surround left speaker, a surround right speaker and a subwoofer, and the multiple speakers may be placed in the car.
  • the number of speakers of different channels can be determined according to the situation, which can be single or multiple, which is not limited in this application.
  • the total transmission duration of audio signals of different frequencies is further controlled to not exceed the auditory retention time of the audio signals reaching the human ear.
  • the position distance between each speaker and the human ear can be determined, and according to the determined multiple position distances, different channels are allocated to the audio signals of different frequencies, that is, to determine A channel module for playing audio signals of different frequencies; then, the audio transmission durations for the audio signals of different frequencies are respectively determined according to the assigned different channels, so as to play the audio signals of different frequencies respectively according to the determined audio transmission duration .
  • step 202 may include the following sub-steps:
  • Sub-step S11 obtaining the corresponding relationship between the audio signals of different frequencies and each speaker
  • each speaker is used to play audio signals of different channels. relationship is allocated.
  • the determined positional distances between the speakers and the human ear may include multiple positional distances, and the audio signals of different frequencies obtained after processing may be audio signals that are connected according to the preset audio sequence as shown in FIG. 3 , Then, at this time, the plurality of speakers may be sorted in order from far to near according to the distances of the positions, and the corresponding relationship between the sorted plurality of speakers and the audio signals in the preset audio sequence is established.
  • Sub-step S12 Calculate the audio transmission duration of the audio signals of different frequencies according to the corresponding relationship and the position distance, and play the audio signals of different frequencies according to the audio transmission duration.
  • the first and second distances can be obtained from the distances of multiple locations, wherein the first The location distance may be any location distance, and the second location distance may be the next location distance based on the first location distance, so that the audio transmission duration is determined by the acquired previous location distance and the next location distance.
  • the audio transmission duration is determined according to the acquired previous position distance and the next position distance. Specifically, the transmission duration can be calculated by using the first position distance, the second position distance and the preset audio transmission speed; The first audio signal corresponding to the first speaker corresponding to the first position distance, and the second audio signal corresponding to the second speaker corresponding to the second position distance, so as to use the transmission duration as the first audio signal and the second audio signal.
  • the transmission duration of audio signals of different frequencies can be determined according to the multiple transmission duration differences and the auditory persistence time of the human ear.
  • the audio signals of different frequencies are time-division multiplexed left-channel audio signals or right-channel audio signals, then the correspondence between speakers of different channels and audio signals of different frequencies can be expressed as channel and time-division multiplexing corresponding relationship.
  • this corresponding relationship can be set according to the actual situation. Specifically, referring to FIG. 3 , based on the actual arrangement position in the vehicle, the positions of the driver and passengers can have the following general principles: distance from the audience (ie, human ears) The farther the channel (that is, the speaker position) is to be placed in the front, and the loudspeaker position closest to the human ear is placed at the end, and so on, so that the channel farthest from the human ear can have a longer propagation time .
  • the corresponding relationship between the time division and the channel can be as follows:
  • t1, t2, t3, t4, t5 and t6 may refer to the transmission duration in the left channel audio
  • t1', t2', t3', t4', t5' and t6' may refer to the right channel
  • t1, t2, t3, t4, t5 and t6 are arranged in order as shown in Figure 3. However, when the audio signal is actually played, the audio signals of different frequencies are played at the same time, but the audio signals of different frequencies Duration varies.
  • the transmission duration difference can be used to represent the difference between the transmission durations of audio signals of different frequencies
  • the difference between the transmission durations and the hearing persistence time of the human ear is determined according to the difference between the transmission durations of the audio signals of different frequencies.
  • the total transmission duration of the audio signals of different frequencies does not exceed the hearing retention time of the human ear under the condition that the difference between the transmission durations of the audio signals of different frequencies satisfies the transmission duration difference. That is, it is possible to make use of the sound persistence phenomenon of the human ear to feel that the audio signals transmitted through speakers of different channels are continuous.
  • t1-t2 the distance from the farthest speaker to the human ear-the distance from the second farthest speaker to the human ear/34cm, the unit is ms, and so on, and t1+t2+
  • the total transmission duration of t3+tx is less than 50ms.
  • the preset audio transmission speed may be 34cm, which may refer to the distance that the sound travels in the air for 1ms.
  • the transmission of all channels may refer to the transmission of the time-division multiplexed audio signal of a certain audio signal in the left channel, and the next cycle may be the time-division multiplexing of the next audio signal in the left channel. Until the audio signal of the left channel is transmitted according to different frequencies and different channels.
  • two-channel audio signals can be processed to obtain audio signals including different frequencies, and the audio signals of different frequencies can be played according to the preset transmission duration, wherein the total transmission duration of the audio signals of different frequencies does not exceed the audio signal.
  • Hearing dwell time that reaches the human ear.
  • time division multiplexing technology is used to select audio signals, so that the audio signals obtained by each channel in a certain time belong to audio signals of different frequencies, and achieve a near-real multi-channel decoding. Presence surround effect.
  • FIG. 4 shows a structural block diagram of a sound source playback device provided by the present application, which is applied to a vehicle and may specifically include the following modules:
  • the two-channel audio signal processing module 401 is configured to acquire a two-channel audio signal, and process the two-channel audio signal to obtain a target audio signal; the target audio signal includes audio signals of different frequencies;
  • the audio signal playing module 402 is configured to play the audio signals of different frequencies according to the preset transmission duration, wherein the total transmission duration of the audio signals of different frequencies does not exceed the auditory retention time for the audio signals to reach the human ear.
  • the vehicle includes a plurality of speakers for playing audio signals of different channels;
  • the audio signal playback module 402 may include the following sub-modules:
  • Correspondence acquisition sub-module for acquiring the corresponding relationship between the audio signals of different frequencies and each speaker
  • the position distance determination sub-module is used to determine the position distance between each speaker and the human ear;
  • a transmission duration calculation submodule configured to calculate the audio transmission duration of the audio signals of different frequencies according to the corresponding relationship and the position distance;
  • the audio signal transmission sub-module is configured to play the audio signals of different frequencies according to the audio transmission duration.
  • a position distance sorting unit configured to sort the plurality of speakers in an order from far to near according to the plurality of position distances
  • the corresponding relationship establishing unit is used for establishing the corresponding relationship between the sorted plurality of speakers and the audio signals in the preset audio sequence.
  • the audio signals of different frequencies include a first audio signal and a second audio signal;
  • the transmission duration calculation submodule may include the following units:
  • a transmission duration calculation unit configured to calculate the transmission duration by using the first position distance, the second position distance and the preset audio transmission speed
  • An audio signal acquisition unit configured to acquire, according to the corresponding relationship, a first audio signal corresponding to the first speaker corresponding to the first position distance, and a second audio signal corresponding to the second speaker corresponding to the second position distance audio signal;
  • a transmission duration difference determining unit configured to use the transmission duration as the transmission duration difference between the first audio signal and the second audio signal; the transmission duration difference is used to represent the difference between the transmission durations of audio signals of different frequencies value;
  • a transmission duration determination unit configured to determine transmission durations of audio signals of different frequencies according to a plurality of the transmission duration differences and the hearing persistence time of the human ear.
  • the total transmission duration of the audio signals of different frequencies does not exceed the auditory temporary duration of the human ear. leave time.
  • the application also provides a vehicle, comprising:
  • the present application also provides a computer-readable storage medium on which a computer program is stored.
  • a computer program is stored.
  • each process of the above-mentioned audio source playback method can be realized, and the same technical effect can be achieved. In order to avoid repetition , which will not be repeated here.
  • embodiments of the embodiments of the present application may be provided as methods, apparatuses, or computer program products. Accordingly, the embodiments of the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present application may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • These computer program instructions may be provided to the processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing terminal equipment to produce a machine that causes the instructions to be executed by the processor of the computer or other programmable data processing terminal equipment Means are created for implementing the functions specified in a flow or flows of the flowcharts and/or a block or blocks of the block diagrams.
  • These computer program instructions may also be stored in a computer readable memory capable of directing a computer or other programmable data processing terminal equipment to operate in a particular manner, such that the instructions stored in the computer readable memory result in an article of manufacture comprising instruction means, the The instruction means implement the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.

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Abstract

本申请提供了音频播放方法、系统、装置、车辆及存储介质，应用于车辆，所述方法包括：获取双声道音频信号，并对所述双声道音频信号进行处理得到目标音频信号；所述目标音频信号包括不同频率的音频信号；按照预设传输时长播放所述不同频率的音频信号，其中，所述不同频率的音频信号的传输总时长不超过音频信号到达人耳的听觉暂留时间。通过利用人耳的听觉暂留特性，采用时分复用技术来甄选音频信号，使得在某一时间内每个声道得到的音频信号属于不同频率的音频信号，达到接近真实的多声道解码的临场感环绕效果。

Description

音频播放方法、系统、装置、车辆及存储介质
本申请要求在2021年02月04日提交中国专利局、申请号为202110156206.3、申请名称为“一种音频播放方法、系统及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及车载音频技术领域，特别是涉及一种音频播放方法、一种音频播放系统、一种音频播放装置、相应的一种车辆以及相应的一种计算机存储介质。
背景技术
随着车辆行业的不断发展，车辆内部的配置也是趋于多元化；例如，车载音响系统。用户在驾驶过程中，能够通过车载音响系统，随时播放自己想要听到的声音，提高了用户的驾驶体验。
其中，传统的汽车音乐播放是采用一个声道的扬声器对应一个声道的音频信号的，比如前左，前右，后左，后右，中置等声道，即可以为了进一步提升用户的听觉体验在车内的不同方位设置多个不同声道的扬声器。
然而，由于目前车上的音源大多为收音机、CD、USB播放器、网络流媒体播放器等提供的两声道节目，在车上所设置的扬声器其实均为利用两声道信号分出来的，即实际上所听到的音源只能相当于是两声道信号对于多个扬声器的应用扩展，各个不同声道扬声器同时播放的信号是一样的，其实际的音频包围环绕感有限。
发明内容
鉴于上述问题，提出了本申请以便提供一种克服上述问题或者至少部分地解决上述问题的一种音频播放方法、相应的一种音频播放系统，相应的一种音频播放装置，相应的一种车辆以及相应的一种计算机存储介质。
本申请公开了一种音频播放方法，应用于车辆，所述方法包括：
获取双声道音频信号，并对所述双声道音频信号进行处理得到目标音频信号；所述目标音频信号包括不同频率的音频信号；
按照预设传输时长播放所述不同频率的音频信号，其中，所述不同频率的音频信号的传输总时长不超过音频信号到达人耳的听觉暂留时间。
在音频播放方法中，所述车辆包括用于播放不同声道音频信号的多个扬声器；所述按照预设传输时长播放所述不同频率的音频信号，包括：
获取所述不同频率的音频信号与各个扬声器的对应关系，以及确定各个扬声器与人耳的位置距离；
根据所述对应关系和所述位置距离计算所述不同频率的音频信号的音频传输时长；
按照所述音频传输时长播放所述不同频率的音频信号。
在音频播放方法中，所述位置距离包括多个位置距离；所述不同频率的音频信号按照预设音频顺序进行信号连接；
所述获取所述不同频率的音频信号与各个扬声器的对应关系，包括：
根据所述多个位置距离按照从远到近的顺序对所述多个扬声器进行相应排序；
建立排序后的多个扬声器与预设音频顺序的音频信号的对应关系。
在音频播放方法中，所述不同频率的音频信号包括第一音频信号和第二音频信号；所述根据所述对应关系和所述位置距离计算所述不同频率的音频信号的音频传输时长，包括：
从所述多个位置距离中获取第一位置距离和第二位置距离；
采用所述第一位置距离、第二位置距离以及预设音频传输速度计算传输时长；
按照所述对应关系分别获取与第一位置距离相应的第一扬声器所对应的第一音频信号，以及与所述第二位置距离相应的第二扬声器所对应的第二音频信号；
将所述传输时长作为所述第一音频信号和第二音频信号的传输时长差；所述传输时长差用于表示不同频率的音频信号的传输时长之间的差值；
根据多个所述传输时长差和所述人耳的听觉暂留时间确定不同频率的音频信号的传输时长。
在音频播放方法中，在不同频率的音频信号的传输时长之间的差值满足传输时长差的情况下，所述不同频率的音频信号的传输总时长不超过所述人耳的听觉暂留时间。
本申请还公开了一种音频播放系统，应用于车辆，所述系统包括音源模块、DSP数字信号处理模块和扬声器模块；
所述音源模块用于提供双声道音频信号；
所述DSP数字信号处理模块用于对所述双声道音频信号进行处理得到目标音频信号；所述目标音频信号包括不同频率的音频信号；
所述扬声器模块用于按照预设传输时长播放所述不同频率的音频信号，其中，所述不同频率的音频信号的传输总时长不超过音频信号到达人耳的听觉暂留时间。
在音频播放系统中，所述系统还包括多声道功放模块；所述多声道功放模块用于向所述扬声器模块传输所述目标音频信号，以及推动所述扬声器模块播放所述目标音频信号；其中，所述扬声器模块包括前左扬声器模块、前右扬声器模块、中置扬声器模块、环绕左扬声器模块、环绕右扬声器模块以及超重低音扬声器模块。
本申请还公开了一种音频播放装置，应用于车辆，所述装置包括：
双声道音频信号处理模块，用于获取双声道音频信号，并对所述双声道音频信号进行处理得到目标音频信号；所述目标音频信号包括不同频率的音频信号；
音频信号播放模块，用于按照预设传输时长播放所述不同频率的音频信号，其中，所述不同频率的音频信号的传输总时长不超过音频信号到达人耳的听觉暂留时间。
在音频播放装置中，所述车辆包括用于播放不同声道音频信号的多个扬声器；所述音频信号播放模块包括：
对应关系获取子模块，用于获取所述不同频率的音频信号与各个扬声器 的对应关系；
位置距离确定子模块，用于确定各个扬声器与人耳的位置距离；
传输时长计算子模块，用于根据所述对应关系和所述位置距离计算所述不同频率的音频信号的音频传输时长；
音频信号传输子模块，用于按照所述音频传输时长播放所述不同频率的音频信号。
在音频播放装置中，所述位置距离包括多个位置距离；所述不同频率的音频信号按照预设音频顺序进行信号连接；所述对应关系获取子模块包括：
位置距离排序单元，用于根据所述多个位置距离按照从远到近的顺序对所述多个扬声器进行相应排序；
对应关系建立单元，用于建立排序后的多个扬声器与预设音频顺序的音频信号的对应关系。
在音频播放装置中，所述不同频率的音频信号包括第一音频信号和第二音频信号；所述传输时长计算子模块包括：
位置距离获取单元，用于从所述多个位置距离中获取第一位置距离和第二位置距离；
传输时长计算单元，用于采用所述第一位置距离、第二位置距离以及预设音频传输速度计算传输时长；
音频信号获取单元，用于按照所述对应关系分别获取与第一位置距离相应的第一扬声器所对应的第一音频信号，以及与所述第二位置距离相应的第二扬声器所对应的第二音频信号；
传输时长差确定单元，用于将所述传输时长作为所述第一音频信号和第二音频信号的传输时长差；所述传输时长差用于表示不同频率的音频信号的传输时长之间的差值；
传输时长确定单元，用于根据多个所述传输时长差和所述人耳的听觉暂留时间确定不同频率的音频信号的传输时长。
在音频播放装置中，在不同频率的音频信号的传输时长之间的差值满足传输时长差的情况下，所述不同频率的音频信号的传输总时长不超过所述人 耳的听觉暂留时间。
本申请还公开了一种车辆，包括：所述音频播放装置、处理器、存储器及存储在所述存储器上并能够在所述处理器上运行的计算机程序，所述计算机程序被所述处理器执行时实现任一项所述音频播放方法的步骤。
本申请还公开了一种计算机可读存储介质，所述计算机可读存储介质上存储计算机程序，所述计算机程序被处理器执行时实现任一项所述音频播放方法的步骤。
本申请包括以下优点：
在本申请中，可以将双声道音频信号进行处理得到包括不同频率的音频信号，并按照预设传输时长播放不同频率的音频信号，其中，不同频率的音频信号的传输总时长不超过音频信号到达人耳的听觉暂留时间。通过利用人耳的听觉暂留特性，采用时分复用技术来甄选音频信号，使得在某一时间内每个声道得到的音频信号属于不同频率的音频信号，达到接近真实的多声道解码的临场感环绕效果。
附图说明
图1是本申请提供的一种音频播放系统的框架示意图；
图2是本申请提供的一种音频播放方法的步骤流程图；
图3是本申请提供的处理后的目标音频信号的示意图；
图4是本申请提供的一种音频播放装置的结构框图。
具体实施方式
为使本申请的上述目的、特征和优点能够更加明显易懂，下面结合附图和具体实施方式对本申请作进一步详细的说明。
目前由于传统的汽车音乐播放是采用一个声道的扬声器对应一个声道的音频信号的，通常为了进一步提升用户的听觉体验，会在车内的不同方位设置多个扬声器，利用多个扬声器同时播放声音的方式，使得用户能够享受到立体声的体验。
现有技术中，车辆的车载音响系统对单声道音频或双声道音频进行解码，得到最多两个声道，那么在车上所设置的扬声器其实均为利用两声道信 号分出来的，各个不同声道扬声器同时播放的信号是一样的，其实际的音频包围环绕感有限。而实际上若要呈现真正的立体声的效果，需要在车辆的各个扬声器中同时播放不同声道的声音。
本申请的核心思想之一是利用人耳的听觉暂留特性，以及在利用人耳的视觉暂留特性的基础上，采用时分复用技术来甄选音频信号，使得在某一个时间内，每个声道得到的音频信号是不同的频率，使得能够将各种乐器等声音分离出来，以达到接近真实的多声道解码的临场感环绕效果。
参照图1，示出了本申请提供的一种音频播放系统的框架示意图，该音频播放系统可以应用于车辆，如图1所示，本申请中的音频播放系统可以包括音源模块10、DSP(Digital Signal Processing，信号数字化处理)数字信号处理模块20、扬声器模块40和电源管理模块50，其还可以包括功放模块30。
其中，音源模块10可以用于提供双声道音频信号。其主要是用于提供标准立体声音频信号，由于在车辆上所播放的音源大多为双声道节目，音源模块10可以包括双声道音源模块，那么此时所提供的标准立体声音频可以为双声道音频信号。
DSP数字信号处理模块20可以对双声道音频信号进行处理得到目标音频信号，其所得到的目标音频信号可以包括目不同频率的音频信号。具体的，处理的双声道音频可以是模拟音频信号和数字音频信号，具体可以对音频信号进行放大、衰减、滤波、提取、开关、延时以及相位处理等处理，具体的，在对音源模块所提供的双声道音频信号进行上述处理之后，可以得到包含不同频率的音频信号的目标音频信号。
功放模块30可以用于向扬声器模块40传输所述目标音频信号，以及推动扬声器模块40播放目标音频信号，具体可以表现为放大音频信号以及推动扬声器模块发声，在本申请中，在得到不同频率的音频信号之后，为了使得每个声道得到的音频信号是不同的频率，那么所用于推动扬声器模块的功放模块30可以为多声道功放模块，多声道功放模块可以用于放大不同频率的音频信号以及推动不同声道的扬声器模块发声。
扬声器模块40可以用于按照预设传输时长播放不同频率的音频信号，具体可以表现为在接收多声道功放模块传输的放大后的音频信号，并将功放传过来的音频信号转化为声音信号放出来，其中，为了使得每个声道得到的音频信号是不同的频率，可以采用多个不同声道的扬声器模块播放上述不同频率的音频信号，且保证不同频率的音频信号的传输总时长不超过音频信号到达人耳的听觉暂留时间。
需要说明的是，多个不同声道的扬声器模块40可以包括前左扬声器模块、前右扬声器模块、中置扬声器模块、环绕左扬声器模块、环绕右扬声器模块以及超重低音扬声器模块，对此，本申请不加以限制。
作为一种示例，采用多个不同声道的扬声器模块播放上述不同频率的音频信号主要可以以频率为区分手段，比如超低频段<200Hz的信号只进入超低音通道，200-2000Hz信号进入中音通道，2000-20000Hz信号进入高音通道；且由于超重低音声道重放的是低于200Hz以下的低频信号，无明显方位感，因此超重低音通道直接由左右声道的主信号加低通滤波器后的混合低音信号即可。
除了在各个音频信号的处理过程中的功能性模块：音源模块10、DSP数字信号处理模块20、功放模块30、扬声器模块40之外，还需要电源管理模块50为前述模块在处理音频信号时提供电源。电源管理模块50可以为前述每一部分功能模块提供稳定且合适的电压与电流，需要说明的是，每种芯片或三极管等电路要求的电源电压电流稳定度、纹波大小都具有一定常规要求的范围，所提供的电压与电流可以根据每颗芯片工作要求的电压与电流进行确定，对此，本申请不加以限制。
在本申请中，采用上述音频播放系统，可以利用人耳的听觉暂留特性，采用时分复用技术来甄选音频信号，使得在某一时间内每个声道得到的音频信号属于不同频率的音频信号，达到接近真实的多声道解码的临场感环绕效果。
参照图2，示出了本申请提供的一种音源播放方法的步骤流程图，应用 于车辆，具体可以包括如下步骤：
步骤201，获取双声道音频信号，并对所述双声道音频信号进行处理得到目标音频信号；所述目标音频信号包括不同频率的音频信号；
在本申请中，实际上若要呈现真正的立体声的效果，需要在车辆的各个扬声器中同时播放不同声道的声音，此时可以对车辆上所提供的音源进行处理，得到包含不同频率的音频信号，以使得每个声道的扬声器所得到的音频信号是不同的频率，达到临场感环绕效果。
在实际应用中，可以通过双声道音源模块提供双声道音频信号，并通过DSP数字信号处理模块对双声道音频信号进行放大、衰减、滤波、提取、开关、延时以及相位处理等处理，以得到不同频率的音频信号。
具体的，参照图3，示出了本申请提供的处理后的目标音频信号的示意图，主要以对双声道音频信号中的左声道音频信号进行时分复用为例。针对某个时间段内的左声道音频信号，在对该时间段内的左声道音频信号进行时分复用处理之后，该某个时间点的左声道音频信号可以被处理得到某一时间段(例如图3中t1～tx)的包含不同频率的音频信号的目标音频信号。需要说明的是，双声道音频信号中的右声道音频信号的时分复用可以等同于左声道音频信号的时分复用，其中时分复用后的左声道音频信号与右声道音频信号的频率可以相同也可以不同，且两者当中不同的音频传输时长也可以相同也可以不同，对此，本申请不加以限制。
步骤202，按照预设传输时长播放所述不同频率的音频信号，其中，所述不同频率的音频信号的传输总时长不超过音频信号到达人耳的听觉暂留时间。
在对所提供的音频信号进行处理之后，可以对不同频率的音频信号进行播放，具体可以按照不同的传输时长对不同频率的音频信号进行播放，以便通过对不同传输时长的控制，进一步控制不同频率的音频信号的传输总时长不超过音频信号到达人耳的听觉暂留时间。
其中，人耳可以具有声觉暂留现象，即人耳可以具有听觉暂留时间，具体可以表现为人对声音的感觉在声音消失后会暂留小段时间。如果到达人耳 的两个声音的时间间隔小于50ms，由于人耳所具有的声觉暂留现象，则不会觉得声音是断续的，其原理可以为直达声到达后50ms以内到达的反射声会加强直达声，直达声到达后50ms后到达的“强”反射声会产生“回声”。那么控制不同频率的音频信号的传输总时长不超过音频信号到达人耳的听觉暂留时间，即可保证在人耳的听觉暂留时间内通过不同频率的音频信号实现临场感环绕效果。
在实际应用中，通过不同频率的音频信号实现临场感环绕效果可以通过车辆所具有的多个扬声器对音频信号进行播放实现，多个扬声器可以用于播放不同声道的音频信号，即可以将不同频率的音频信号分别作为不同声道的音频信号。具体的，不同频率的声音信号可以分别对应前左声道、环绕左声道、前右声道、环绕右声道以及中置声道。
需要说明的是，用于播放不同声道音频信号的多个扬声器可以包括前左扬声器、前右扬声器、中置扬声器、环绕左扬声器、环绕右扬声器以及超重低音扬声器，多个扬声器可以放置于车底盘外的合适位置，不同声道的扬声器的数量可以视情况决定，其可以是单个也可以是多个，对此，本申请不加以限制。
在具体实现中，通过对不同传输时长的控制，进一步控制不同频率的音频信号的传输总时长不超过音频信号到达人耳的听觉暂留时间，可能存在不同频率的音频信号的传输时长不同的现象，出现此现象的原因可以是由与音频信号所对应的声道扬声器的位置与人耳的距离不同导致的。
此时，在确定不同频率的音频信号传输时长的过程中，可以确定各个扬声器与人耳的位置距离，并根据所确定的多个位置距离分别对不同频率的音频信号分配不同声道，即确定用于播放不同频率的音频信号的声道模块；然后再根据所分配的不同声道分别确定针对不同频率的音频信号的音频传输时长，以便按照所确定的音频传输时长分别播放不同频率的音频信号。
在本申请中，步骤202可以包括如下子步骤：
子步骤S11，获取所述不同频率的音频信号与各个扬声器的对应关系；
在根据所确定的多个位置距离分别对不同频率的音频信号分配不同声 道的过程中，各个扬声器用于播放不同声道的音频信号，则具体可以通过不同频率的音频信号与各个扬声器的对应关系进行分配。
具体的，所确定的各个扬声器与人耳的位置距离可以包括多个位置距离，而处理后得到的不同频率的音频信号可以如图3所示为按照预设音频顺序进行信号连接的音频信号，那么此时可以根据多个位置距离按照从远到近的顺序对多个扬声器进行相应排序，并建立排序后的多个扬声器与预设音频顺序的音频信号的对应关系。
子步骤S12，根据所述对应关系和所述位置距离计算所述不同频率的音频信号的音频传输时长，并按照所述音频传输时长播放所述不同频率的音频信号。
在按照多个位置距离从远到近的顺序进行排列并建立对应关系之后，在确定音频传输时长时，可以获取从多个位置距离中获取第一位置距离和第二位置距离，其中，第一位置距离可以为任一位置距离，而第二位置距离可以为基于第一位置距离的后一个位置距离，以便通过所获取的前一位置距离和后一位置距离确定音频传输时长。
通过所获取的前一位置距离和后一位置距离确定音频传输时长，具体可以为，采用第一位置距离、第二位置距离以及预设音频传输速度计算传输时长；然后可以按照对应关系分别获取与第一位置距离相应的第一扬声器所对应的第一音频信号，以及与第二位置距离相应的第二扬声器所对应的第二音频信号，以将传输时长作为第一音频信号和第二音频信号之间的传输时长差；最后可以根据多个传输时长差和人耳的听觉暂留时间确定不同频率的音频信号的传输时长。
在实际应用中，不同频率的音频信号为进行时分复用的左声道音频信号或右声道音频信号，那么不同声道的扬声器与不同频率的音频信号的对应关系可以表现为声道与时分的对应关系。
需要说明的是，此对应关系可以按照实际情况进行设置，具体的，可以参照图3，基于车内实际布置位置距离驾驶员以及乘客的位置可以有下列大致的原则：距离听众(即人耳)越远的声道(即扬声器位置)越要排在前面， 且距离人耳最近的扬声器位置越排在最后，以此类推，以便使得离人耳最远的声道可以具有较长的传播时长。
作为一种示例，如图3所示，其时分与声道的对应关系可以如下：
左声道t1---前左声道      右声道t1’---前右声道
左声道t2---环绕左声道    右声道t2’---环绕右声道
左声道t3+右声道t3’---中置声道
左声道t4---前左声道      右声道t4’---前右声道
左声道t5---环绕左声道    右声道t5’---环绕右声道
左声道t6+右声道t6’---中置声道
其中，t1、t2、t3、t4、t5和t6可以指的是左声道音频中的传输时长，t1’、t2’、t3’、t4’、t5’和t6’可以指的是右声道音频中的传输时长。需要说明的是，如图3所示的t1、t2、t3、t4、t5和t6按照顺序排列，然而实际在进行播放音频信号时，不同频率的音频信号同时播放，只是不同频率的音频信号的时长不同。
在具体实现中，由于传输时长差可以用于表示不同频率的音频信号的传输时长之间的差值，那么在根据多个传输时长差和人耳的听觉暂留时间确定不同频率的音频信号的传输时长的过程中，可以在不同频率的音频信号的传输时长之间的差值满足传输时长差的情况下，保证不同频率的音频信号的传输总时长不超过所述人耳的听觉暂留时间即可，使得可以利用人耳所具有的声觉暂留现象，觉得通过不同声道扬声器所传输的音频信号为连续的。
作为一种示例，在图3中，t1-t2＝最远的扬声器距离人耳的距离-第二远的扬声器距离人耳的距离/34cm，单位是ms，以此类推，且t1+t2+t3+tx的总传输时长小于50ms。其中，预设音频传输速度可以为34cm，其可以指的是声音在空气中1ms传播的距离。
针对某个时间内的左声道音频信号，其进行时分复用之后可以得到某一时间段的不同频率的音频信号，并在所有声道传输一遍后再还可以再次开始循环。具体的，所有声道传输一遍可以指的是传输左声道某个音频信号的时 分复用后的音频信号，而下个循环针对的可以是左声道中下一个音频信号的时分复用，直至将左声道的音频信号按照不同频率不同声道进行传输完成为止。
在本申请中，可以将双声道音频信号进行处理得到包括不同频率的音频信号，并按照预设传输时长播放不同频率的音频信号，其中，不同频率的音频信号的传输总时长不超过音频信号到达人耳的听觉暂留时间。通过利用人耳的听觉暂留特性，采用时分复用技术来甄选音频信号，使得在某一时间内每个声道得到的音频信号属于不同频率的音频信号，达到接近真实的多声道解码的临场感环绕效果。
需要说明的是，对于方法实施例，为了简单描述，故将其都表述为一系列的动作组合，但是本领域技术人员应该知悉，本申请实施例并不受所描述的动作顺序的限制，因为依据本申请实施例，某些步骤可以采用其他顺序或者同时进行。其次，本领域技术人员也应该知悉，说明书中所描述的实施例均属于优选实施例，所涉及的动作并不一定是本申请实施例所必须的。
参照图4，示出了本申请提供的一种音源播放装置的结构框图，应用于车辆，具体可以包括如下模块：
双声道音频信号处理模块401，用于获取双声道音频信号，并对所述双声道音频信号进行处理得到目标音频信号；所述目标音频信号包括不同频率的音频信号；
音频信号播放模块402，用于按照预设传输时长播放所述不同频率的音频信号，其中，所述不同频率的音频信号的传输总时长不超过音频信号到达人耳的听觉暂留时间。
在音源播放装置本申请中，所述车辆包括用于播放不同声道音频信号的多个扬声器；音频信号播放模块402可以包括如下子模块：
对应关系获取子模块，用于获取所述不同频率的音频信号与各个扬声器的对应关系；
位置距离确定子模块，用于确定各个扬声器与人耳的位置距离；
传输时长计算子模块，用于根据所述对应关系和所述位置距离计算所述不同频率的音频信号的音频传输时长；
音频信号传输子模块，用于按照所述音频传输时长播放所述不同频率的音频信号。
在音源播放装置本申请中，所述位置距离包括多个位置距离；所述不同频率的音频信号按照预设音频顺序进行信号连接；对应关系获取子模块可以包括如下单元：
位置距离排序单元，用于根据所述多个位置距离按照从远到近的顺序对所述多个扬声器进行相应排序；
对应关系建立单元，用于建立排序后的多个扬声器与预设音频顺序的音频信号的对应关系。
在音源播放装置本申请中，所述不同频率的音频信号包括第一音频信号和第二音频信号；传输时长计算子模块可以包括如下单元：
位置距离获取单元，用于从所述多个位置距离中获取第一位置距离和第二位置距离；
传输时长计算单元，用于采用所述第一位置距离、第二位置距离以及预设音频传输速度计算传输时长；
音频信号获取单元，用于按照所述对应关系分别获取与第一位置距离相应的第一扬声器所对应的第一音频信号，以及与所述第二位置距离相应的第二扬声器所对应的第二音频信号；
传输时长差确定单元，用于将所述传输时长作为所述第一音频信号和第二音频信号的传输时长差；所述传输时长差用于表示不同频率的音频信号的传输时长之间的差值；
传输时长确定单元，用于根据多个所述传输时长差和所述人耳的听觉暂留时间确定不同频率的音频信号的传输时长。
在音源播放装置本申请中，在不同频率的音频信号的传输时长之间的差值满足传输时长差的情况下，所述不同频率的音频信号的传输总时长不超过所述人耳的听觉暂留时间。
对于装置实施例而言，由于其与方法实施例基本相似，所以描述的比较简单，相关之处参见方法实施例的部分说明即可。
本申请还提供了一种车辆，包括：
包括上述音源播放装置、处理器、存储器及存储在所述存储器上并能够在所述处理器上运行的计算机程序，该计算机程序被处理器执行时实现上述音源播放方法的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
本申请还提供了一种计算机可读存储介质，计算机可读存储介质上存储计算机程序，计算机程序被处理器执行时实现上述音源播放方法的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
本说明书中的各个实施例均采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似的部分互相参见即可。
本领域内的技术人员应明白，本申请实施例的实施例可提供为方法、装置、或计算机程序产品。因此，本申请实施例可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本申请实施例可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本申请实施例是参照根据本申请实施例的方法、终端设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理终端设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理终端设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理终端设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理终端设备上，使得在计算机或其他可编程终端设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程终端设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
尽管已描述了本申请实施例的优选实施例，但本领域内的技术人员一旦得知了基本创造性概念，则可对这些实施例做出另外的变更和修改。所以，所附权利要求意欲解释为包括优选实施例以及落入本申请实施例范围的所有变更和修改。
最后，还需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者终端设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者终端设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者终端设备中还存在另外的相同要素。
以上对本申请所提供的一种音频播放方法、一种音频播放系统、一种音频播放装置、相应的一种车辆以及相应的一种计算机存储介质，进行了详细介绍，本文中应用了具体个例对本申请的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本申请的方法及其核心思想；同时，对于本领域的一般技术人员，依据本申请的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本申请的限制。

Claims (10)

  1. 一种音频播放方法，其特征在于，应用于车辆，所述方法包括：
    获取双声道音频信号，并对所述双声道音频信号进行处理得到目标音频信号；所述目标音频信号包括不同频率的音频信号；
    按照预设传输时长播放所述不同频率的音频信号，其中，所述不同频率的音频信号的传输总时长不超过音频信号到达人耳的听觉暂留时间。
  2. 根据权利要求1所述的方法，其特征在于，所述车辆包括用于播放不同声道音频信号的多个扬声器；所述按照预设传输时长播放所述不同频率的音频信号，包括：
    获取所述不同频率的音频信号与各个扬声器的对应关系，以及确定各个扬声器与人耳的位置距离；
    根据所述对应关系和所述位置距离计算所述不同频率的音频信号的音频传输时长；
    按照所述音频传输时长播放所述不同频率的音频信号。
  3. 根据权利要求2所述的方法，其特征在于，所述位置距离包括多个位置距离；所述不同频率的音频信号按照预设音频顺序进行信号连接；
    所述获取所述不同频率的音频信号与各个扬声器的对应关系，包括：
    根据所述多个位置距离按照从远到近的顺序对所述多个扬声器进行相应排序；
    建立排序后的多个扬声器与预设音频顺序的音频信号的对应关系。
  4. 根据权利要求2所述的方法，其特征在于，所述不同频率的音频信号包括第一音频信号和第二音频信号；所述根据所述对应关系和所述位置距离计算所述不同频率的音频信号的音频传输时长，包括：
    从所述多个位置距离中获取第一位置距离和第二位置距离；
    采用所述第一位置距离、第二位置距离以及预设音频传输速度计算传输时长；
    按照所述对应关系分别获取与第一位置距离相应的第一扬声器所对应的第一音频信号，以及与所述第二位置距离相应的第二扬声器所对应的第二音频信号；
    将所述传输时长作为所述第一音频信号和第二音频信号的传输时长差；所述传输时长差用于表示不同频率的音频信号的传输时长之间的差值；
    根据多个所述传输时长差和所述人耳的听觉暂留时间确定不同频率的音频信号的传输时长。
  5. 根据权利要求4所述的方法，其特征在于，在不同频率的音频信号的传输时长之间的差值满足传输时长差的情况下，所述不同频率的音频信号的传输总时长不超过所述人耳的听觉暂留时间。
  6. 一种音频播放系统，其特征在于，应用于车辆，所述系统包括音源模块、DSP数字信号处理模块和扬声器模块；
    所述音源模块用于提供双声道音频信号；
    所述DSP数字信号处理模块用于对所述双声道音频信号进行处理得到目标音频信号；所述目标音频信号包括不同频率的音频信号；
    所述扬声器模块用于按照预设传输时长播放所述不同频率的音频信号，其中，所述不同频率的音频信号的传输总时长不超过音频信号到达人耳的听觉暂留时间。
  7. 根据权利要求6所述的系统，其特征在于，所述系统还包括多声道功放模块；所述多声道功放模块用于向所述扬声器模块传输所述目标音频信号，以及推动所述扬声器模块播放所述目标音频信号；其中，所述扬声器模块包括前左扬声器模块、前右扬声器模块、中置扬声器模块、环绕左扬声器模块、环绕右扬声器模块以及超重低音扬声器模块。
  8. 一种音频播放装置，其特征在于，应用于车辆，所述装置包括：
    双声道音频信号处理模块，用于获取双声道音频信号，并对所述双声道音频信号进行处理得到目标音频信号；所述目标音频信号包括不同频率的音频信号；
    音频信号播放模块，用于按照预设传输时长播放所述不同频率的音频信号，其中，所述不同频率的音频信号的传输总时长不超过音频信号到达人耳 的听觉暂留时间。
  9. 一种车辆，其特征在于，包括：如权利要求8所述音频播放装置、处理器、存储器及存储在所述存储器上并能够在所述处理器上运行的计算机程序，所述计算机程序被所述处理器执行时实现如权利要求1-5中任一项所述音频播放方法的步骤。
  10. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质上存储计算机程序，所述计算机程序被处理器执行时实现如权利要求1-5中任一项所述音频播放方法的步骤。
PCT/CN2022/073991 2021-02-04 2022-01-26 音频播放方法、系统、装置、车辆及存储介质 WO2022166708A1 (zh)

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