CN112954581A - Audio playing method, system and device - Google Patents
Audio playing method, system and device Download PDFInfo
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Abstract
The embodiment of the invention provides an audio playing method, system and device, which are applied to a vehicle, wherein the method comprises the following steps: acquiring a two-channel audio signal, and processing the two-channel audio signal to obtain a target audio signal; the target audio signal comprises audio signals of different frequencies; and playing the audio signals with different frequencies according to a preset transmission duration, wherein the total transmission duration of the audio signals with different frequencies does not exceed the auditory persistence time of the audio signals reaching human ears. By using the auditory persistence characteristic of human ears and adopting the time division multiplexing technology to screen the audio signals, the audio signals obtained by each sound channel in a certain time belong to the audio signals with different frequencies, and the realistic telepresence surrounding effect of multi-channel decoding is achieved.
Description
Technical Field
The present invention relates to the field of vehicle audio technologies, and in particular, to an audio playing method, an audio playing system, and an audio playing device.
Background
With the continuous development of the vehicle industry, the configuration of the interior of the vehicle tends to be diversified; such as a car audio system. The user can play the sound that oneself wanted to hear through on-vehicle sound system at any time at the driving in-process, has improved user's driving experience.
The conventional automobile music playing adopts a sound channel loudspeaker to correspond to an audio signal of a sound channel, such as front left, front right, back left, back right, middle and equal sound channels, so that the loudspeakers of a plurality of different sound channels can be arranged in different directions in the automobile for further improving the hearing experience of a user.
However, most of the sound sources in the car are two-channel programs provided by a radio, a CD player, a USB player, a network streaming media player, and the like, and the speakers installed in the car are actually separated by using two-channel signals, that is, actually, the sound sources heard by the speakers are only equivalent to the application extension of the two-channel signals to a plurality of speakers, the signals played by the speakers with different channels at the same time are the same, and the actual surround sense of audio is limited.
Disclosure of Invention
In view of the above problems, embodiments of the present invention are proposed to provide an audio playing method, a corresponding audio playing system, and a corresponding audio playing apparatus that overcome or at least partially solve the above problems.
The embodiment of the invention discloses an audio playing method, which is applied to a vehicle and comprises the following steps:
acquiring a two-channel audio signal, and processing the two-channel audio signal to obtain a target audio signal; the target audio signal comprises audio signals of different frequencies;
and playing the audio signals with different frequencies according to a preset transmission duration, wherein the total transmission duration of the audio signals with different frequencies does not exceed the auditory persistence time of the audio signals reaching human ears.
Optionally, the vehicle comprises a plurality of speakers for playing different channels of audio signals; the playing the audio signals with different frequencies according to the preset transmission duration includes:
acquiring the corresponding relation between the audio signals with different frequencies and each loudspeaker, and determining the position distance between each loudspeaker and the human ear;
calculating the audio transmission time length of the audio signals with different frequencies according to the corresponding relation and the position distance;
and playing the audio signals with different frequencies according to the audio transmission time length.
Optionally, the location distance comprises a plurality of location distances; the audio signals with different frequencies are subjected to signal connection according to a preset audio sequence;
the obtaining of the corresponding relationship between the audio signals of different frequencies and the speakers includes:
correspondingly sorting the plurality of loudspeakers according to the plurality of position distances in a sequence from far to near;
and establishing a corresponding relation between the sequenced loudspeakers and the audio signals of the preset audio sequence.
Optionally, the audio signals of different frequencies comprise a first audio signal and a second audio signal; the calculating the audio transmission duration of the audio signals with different frequencies according to the corresponding relation and the position distance includes:
obtaining a first position distance and a second position distance from the plurality of position distances;
calculating the transmission time length by adopting the first position distance, the second position distance and a preset audio transmission speed;
respectively acquiring a first audio signal corresponding to a first loudspeaker corresponding to the first position distance and a second audio signal corresponding to a second loudspeaker corresponding to the second position distance according to the corresponding relation;
taking the transmission time length as the transmission time length difference of the first audio signal and the second audio signal; the transmission time length difference is used for representing the difference between the transmission time lengths of the audio signals with different frequencies;
and determining the transmission time lengths of the audio signals with different frequencies according to the plurality of transmission time length differences and the auditory persistence time of the human ears.
Optionally, in a case where a difference between transmission time periods of the audio signals of different frequencies satisfies the transmission time period difference, a total transmission time period of the audio signals of different frequencies does not exceed an auditory persistence time of the human ear.
The embodiment of the invention also discloses an audio playing system which is applied to the vehicle and comprises a sound source module, a DSP digital signal processing module and a loudspeaker module;
the sound source module is used for providing a two-channel audio signal;
the DSP digital signal processing module is used for processing the two-channel audio signal to obtain a target audio signal; the target audio signal comprises audio signals of different frequencies;
the loudspeaker module is used for playing the audio signals with different frequencies according to preset transmission duration, wherein the total transmission duration of the audio signals with different frequencies does not exceed the auditory persistence time of the audio signals reaching human ears.
Optionally, the system further includes a multi-channel power amplifier module; the multi-channel power amplifier module is used for transmitting the target audio signal to the loudspeaker module and pushing the loudspeaker module to play the target audio signal; the speaker module comprises a front left speaker module, a front right speaker module, a middle speaker module, a surrounding left speaker module, a surrounding right speaker module and a super bass speaker module.
The embodiment of the invention also discloses an audio playing device, which is applied to a vehicle, and the device comprises:
the device comprises a double-channel audio signal processing module, a target audio signal processing module and a control module, wherein the double-channel audio signal processing module is used for acquiring a double-channel audio signal and processing the double-channel audio signal to obtain a target audio signal; the target audio signal comprises audio signals of different frequencies;
and the audio signal playing module is used for playing the audio signals with different frequencies according to preset transmission duration, wherein the total transmission duration of the audio signals with different frequencies does not exceed the auditory persistence time of the audio signals reaching human ears.
Optionally, the vehicle comprises a plurality of speakers for playing different channels of audio signals; the audio signal playing module comprises:
the corresponding relation acquisition submodule is used for acquiring the corresponding relation between the audio signals with different frequencies and each loudspeaker;
the position distance determining submodule is used for determining the position distance between each loudspeaker and the human ear;
the transmission duration calculation submodule is used for calculating the audio transmission duration of the audio signals with different frequencies according to the corresponding relation and the position distance;
and the audio signal transmission submodule is used for playing the audio signals with different frequencies according to the audio transmission duration.
Optionally, the location distance comprises a plurality of location distances; the audio signals with different frequencies are subjected to signal connection according to a preset audio sequence; the corresponding relation obtaining sub-module comprises:
the position distance sorting unit is used for correspondingly sorting the plurality of loudspeakers according to the plurality of position distances in a sequence from far to near;
and the corresponding relation establishing unit is used for establishing the corresponding relation between the sequenced loudspeakers and the audio signals of the preset audio sequence.
Optionally, the audio signals of different frequencies comprise a first audio signal and a second audio signal; the transmission duration calculation sub-module includes:
a position distance acquisition unit configured to acquire a first position distance and a second position distance from the plurality of position distances;
the transmission duration calculation unit is used for calculating the transmission duration by adopting the first position distance, the second position distance and a preset audio transmission speed;
the audio signal acquisition unit is used for respectively acquiring a first audio signal corresponding to a first loudspeaker corresponding to the first position distance and a second audio signal corresponding to a second loudspeaker corresponding to the second position distance according to the corresponding relation;
a transmission duration difference determining unit configured to use the transmission duration as a transmission duration difference between the first audio signal and the second audio signal; the transmission time length difference is used for representing the difference between the transmission time lengths of the audio signals with different frequencies;
and the transmission duration determining unit is used for determining the transmission durations of the audio signals with different frequencies according to the plurality of transmission duration differences and the auditory persistence time of the human ears.
Optionally, in a case where a difference between transmission time periods of the audio signals of different frequencies satisfies the transmission time period difference, a total transmission time period of the audio signals of different frequencies does not exceed an auditory persistence time of the human ear.
The embodiment of the invention also discloses a vehicle, which comprises: the audio playing device, the processor, the memory and the computer program stored on the memory and capable of running on the processor, wherein the computer program realizes the steps of any one of the audio playing methods when being executed by the processor.
The embodiment of the invention also discloses a computer readable storage medium, wherein a computer program is stored on the computer readable storage medium, and the computer program is used for realizing the steps of any audio playing method when being executed by a processor.
The embodiment of the invention has the following advantages:
in the embodiment of the invention, the two-channel audio signals can be processed to obtain the audio signals with different frequencies, and the audio signals with different frequencies are played according to the preset transmission duration, wherein the total transmission duration of the audio signals with different frequencies does not exceed the auditory persistence time of the audio signals reaching human ears. By using the auditory persistence characteristic of human ears and adopting the time division multiplexing technology to screen the audio signals, the audio signals obtained by each sound channel in a certain time belong to the audio signals with different frequencies, and the realistic telepresence surrounding effect of multi-channel decoding is achieved.
Drawings
FIG. 1 is a block diagram of an embodiment of an audio playback system according to the present invention;
FIG. 2 is a flowchart illustrating steps of an embodiment of an audio playing method according to the present invention;
FIG. 3 is a schematic diagram of a processed target audio signal in an embodiment of the invention;
fig. 4 is a block diagram of an audio playing apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
At present, because the traditional car music playing adopts the audio signal of one sound channel corresponding to the loudspeaker of one sound channel, usually, in order to further improve the hearing experience of a user, a plurality of loudspeakers can be arranged at different positions in the car, and the user can enjoy the stereo experience by utilizing the mode that the plurality of loudspeakers play sound at the same time.
In the prior art, a vehicle-mounted sound system of a vehicle decodes a single-channel audio or a dual-channel audio to obtain at most two channels, so that speakers arranged on the vehicle are actually separated by using two channel signals, signals played by different channel speakers at the same time are the same, and the actual surround sense of the audio is limited. In practice, to present true stereo sound, it is necessary to play back different sound channels simultaneously at the speakers of the vehicle.
One of the core ideas of the embodiment of the invention is to use the auditory persistence characteristic of human ears and adopt a time division multiplexing technology to select audio signals on the basis of using the visual persistence characteristic of human ears, so that the audio signals obtained by each sound channel are different in frequency within a certain time, and the sounds of various musical instruments and the like can be separated, thereby achieving the realistic multi-channel decoding telepresence surrounding effect.
Referring to fig. 1, a schematic diagram of an audio playback system according to an embodiment of the present invention is shown, where the audio playback system may be applied to a vehicle, and as shown in fig. 1, the audio playback system according to an embodiment of the present invention may include a sound source module 10, a DSP (Digital Signal Processing) Digital Signal Processing module 20, a power amplifier module 30, a speaker module 40, and a power management module 50.
The sound source module 10 may be configured to provide a standard stereo audio signal, and since most of the sound sources played on the vehicle are binaural programs, the sound source module 10 may include a binaural sound source module, so that the standard stereo audio signal provided at this time may be a binaural audio signal.
The DSP digital signal processing module 20 may be configured to process an analog audio signal and a digital audio signal, and specifically may perform amplification, attenuation, filtering, extraction, switching, delay, phase processing, and the like on the audio signal, and specifically, after performing the above processing on the binaural audio signal provided by the sound source module, may obtain a target audio signal including audio signals with different frequencies.
In the embodiment of the present invention, after obtaining audio signals with different frequencies, in order to make the audio signals obtained from each channel have different frequencies, the power amplification module 30 used for pushing the speaker module may be a multi-channel power amplification module, and the multi-channel power amplification module may be used for amplifying audio signals with different frequencies and pushing speaker modules with different channels to generate sound.
The speaker module 40 may be configured to receive the amplified audio signal transmitted by the power amplifier module, convert the audio signal transmitted by the power amplifier into a sound signal, and play the sound signal, where in order to make the audio signal obtained in each channel have different frequencies, a plurality of speaker modules with different channels may be used to play the audio signal with different frequencies.
Specifically, the speaker modules 40 for the plurality of 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.
As an example, the audio signals with different frequencies played by the speaker modules with different channels may mainly be differentiated by frequency, such as the signal with the ultra low frequency band <200Hz enters only the ultra low sound channel, the signal with 200-; and because the subwoofer channel reproduces low-frequency signals below 200Hz and has no obvious azimuth sense, the subwoofer channel is directly formed by mixing the main signals of the left channel and the right channel with the low-pass filter.
In one embodiment of the invention, in addition to the functional blocks in the processing of the respective audio signals: besides the sound source module 10, the DSP digital signal processing module 20, the power amplifier module 30 and the speaker module 40, the power management module 50 is also required to provide power for the aforementioned modules when processing audio signals. The power management module 50 may provide stable and appropriate voltage and current for each of the aforementioned functional modules, it should be noted that the power voltage and current stability and the ripple magnitude required by each chip or triode and other circuits have a certain range of conventional requirements, and the provided voltage and current may be determined according to the voltage and current required by each chip, which is not limited in the embodiments of the present invention.
In the embodiment of the invention, by adopting the audio playing system, the audio signals can be screened by utilizing the auditory persistence characteristics of human ears and adopting the time division multiplexing technology, so that the audio signals obtained by each channel in a certain time belong to the audio signals with different frequencies, and the realistic telepresence surrounding effect of multi-channel decoding is achieved.
Referring to fig. 2, a flowchart illustrating steps of an embodiment of a sound source playing method according to the present invention is shown, and applied to a vehicle, the method specifically includes the following steps:
in an embodiment of the present invention, in order to actually present a real stereo effect, it is necessary to play sounds of different channels simultaneously in each speaker of the vehicle, and at this time, a sound source provided on the vehicle may be processed to obtain audio signals with different frequencies, so that the audio signals obtained by the speakers of each channel are of different frequencies, thereby achieving a realistic surround effect.
In practical application, a binaural audio signal can be provided through a binaural sound source module, and the binaural audio signal is amplified, attenuated, filtered, extracted, switched, delayed, phase-processed, and the like through a DSP digital signal processing module, so as to obtain audio signals of different frequencies.
Specifically, referring to fig. 3, a schematic diagram of a target audio signal processed in an embodiment of the present invention is shown, which mainly takes time division multiplexing of a left channel audio signal in a two-channel audio signal as an example. For the left channel audio signal in a certain time period, after performing time division multiplexing processing on the left channel audio signal in the certain time period, the left channel audio signal at the certain time point may be processed to obtain target audio signals containing audio signals of different frequencies for a certain time period (e.g., t1 to tx in fig. 3). It should be noted that, the time division multiplexing of the right channel audio signal in the two-channel audio signals may be equal to the time division multiplexing of the left channel audio signal, where the frequencies of the time-division multiplexed left channel audio signal and right channel audio signal may be the same or different, and different audio transmission durations may be the same or different, and thus, the embodiments of the present invention are not limited thereto.
In an embodiment of the present invention, after processing the provided audio signal, the audio signals with different frequencies may be played, and specifically, the audio signals with different frequencies may be played according to different transmission durations, so that by controlling the different transmission durations, the total transmission duration of the audio signals with different frequencies is further controlled not to exceed the auditory persistence time of the audio signal reaching human ears.
Wherein, human ear can have the sound sensation persistence phenomenon, and human ear can have the auditory persistence time promptly, can show specifically that the human sensation to the sound can persist for a short period of time after the sound disappears. If the time interval between two sounds reaching the human ear is less than 50ms, the sound cannot be considered to be intermittent due to the phenomenon of sound sense persistence of the human ear, the principle can be that reflected sound reaching within 50ms after the direct sound reaches can strengthen the direct sound, and 'strong' reflected sound reaching 50ms after the direct sound reaches can generate 'echo'. The total transmission duration of the audio signals with different frequencies is controlled not to exceed the hearing persistence time of the audio signals reaching human ears, and the telepresence surrounding effect can be achieved through the audio signals with different frequencies within the hearing persistence time of the human ears.
In practical application, the audio signals are played through a plurality of speakers of a vehicle to realize the telepresence surround effect through the audio signals with different frequencies, and the speakers can be used for playing the audio signals with different sound channels, namely, the audio signals with different frequencies can be respectively used as the audio signals with different sound channels. Specifically, the sound signals with different frequencies may correspond to a front left channel, a surround left channel, a front right channel, a surround right channel, and a center channel, respectively.
It should be noted that the plurality of speakers for playing the audio signals of different channels may include a front left speaker, a front right speaker, a middle speaker, a surround left speaker, a surround right speaker and a subwoofer, the plurality of speakers may be placed at suitable positions outside the chassis of the vehicle, the number of speakers of different channels may be determined according to circumstances, and may be a single speaker or a plurality of speakers, and the embodiment of the present invention is not limited thereto.
In a specific implementation, by controlling different transmission durations, the total transmission duration of the audio signals with different frequencies is further controlled not to exceed the auditory persistence time of the audio signals reaching human ears, and there may be a phenomenon that the transmission durations of the audio signals with different frequencies are different, and the reason for the phenomenon may be caused by the difference between the positions of the channel speakers corresponding to the audio signals and the distances between the positions and the human ears.
At this time, in the process of determining the transmission duration of the audio signals with different frequencies, the position distances between each loudspeaker and the ears of a person can be determined, and different sound channels are respectively allocated to the audio signals with different frequencies according to the determined position distances, namely, a sound channel module for playing the audio signals with different frequencies is determined; and then respectively determining the audio transmission time lengths of the audio signals aiming at different frequencies according to the allocated different sound channels so as to respectively play the audio signals of different frequencies according to the determined audio transmission time lengths.
In one embodiment of the present invention, step 202 may include the following sub-steps:
substep S11, obtaining the corresponding relation between the audio signals with different frequencies and each loudspeaker;
in the process of respectively allocating different sound channels to the audio signals with different frequencies according to the determined position distances, each loudspeaker is used for playing the audio signals with different sound channels, and the audio signals with different frequencies can be specifically allocated according to the corresponding relation between the audio signals with different frequencies and each loudspeaker.
Specifically, the determined position distances between the speakers and the ears may include a plurality of position distances, and the processed audio signals with different frequencies may be audio signals that are subjected to signal connection according to a preset audio sequence as shown in fig. 3, so that the speakers may be correspondingly sorted according to the plurality of position distances in a sequence from far to near, and a corresponding relationship between the sorted speakers and the audio signals of the preset audio sequence is established.
And a substep S12, calculating the audio transmission time length of the audio signals with different frequencies according to the corresponding relationship and the position distance, and playing the audio signals with different frequencies according to the audio transmission time length.
In an embodiment of the present invention, after arranging and establishing the correspondence relationship in the order of the plurality of position distances from far to near, when determining the audio transmission time length, a first position distance and a second position distance may be obtained from the plurality of position distances, where the first position distance may be any position distance, and the second position distance may be a subsequent position distance based on the first position distance, so as to determine the audio transmission time length by the obtained previous position distance and the subsequent position distance.
Determining the audio transmission time length according to the acquired front position distance and the acquired rear position distance, specifically, calculating the transmission time length by adopting the first position distance, the second position distance and a preset audio transmission speed; then, a first audio signal corresponding to a first loudspeaker corresponding to the first position distance and a second audio signal corresponding to a second loudspeaker corresponding to the second position distance can be respectively obtained according to the corresponding relation, and the transmission time length is used as the transmission time length difference between the first audio signal and the second audio signal; and finally, determining the transmission time lengths of the audio signals with different frequencies according to the plurality of transmission time length differences and the auditory persistence time of human ears.
In practical applications, the audio signals with different frequencies are left channel audio signals or right channel audio signals that are time-division multiplexed, and the correspondence between the speakers with different channels and the audio signals with different frequencies can be expressed as the correspondence between channels and time division.
It should be noted that the corresponding relationship may be set according to actual situations, and specifically, referring to fig. 3, there may be the following general principle based on the distance from the actually disposed position in the vehicle to the driver and the passenger: the further away from the listener (i.e. the human ear) the channels (i.e. the loudspeaker positions) are arranged in front and the closest loudspeaker positions to the human ear are arranged in the end, and so on, so that the channels furthest away from the human ear can have a longer propagation length.
As an example, as shown in fig. 3, the correspondence of time and channel thereof may be as follows:
left channel t 1-front left channel right channel t 1' - -front right channel
Left channel t 2-surround left channel right channel t 2' -surround right channel
Left channel t3+ right channel t 3' - -center channel
Left channel t 4-front left channel right channel t 4' - -front right channel
Left channel t 5-surround left channel right channel t 5' -surround right channel
Left channel t6+ right channel t 6' - -center channel
Where t1, t2, t3, t4, t5, and t6 may refer to transmission durations in left-channel audio, and t1 ', t 2', t3 ', t 4', t5 ', and t 6' may refer to transmission durations in right-channel audio. It should be noted that, as shown in fig. 3, t1, t2, t3, t4, t5 and t6 are arranged in sequence, however, in practice, when playing the audio signals, the audio signals of different frequencies are played simultaneously, but the time lengths of the audio signals of different frequencies are different.
In a specific implementation, since the transmission duration difference may be used to represent a difference between transmission durations of audio signals of different frequencies, in a process of determining the transmission durations of the audio signals of different frequencies according to a plurality of transmission duration differences and an auditory persistence time of a human ear, it is sufficient to ensure that a total transmission duration of the audio signals of different frequencies does not exceed the auditory persistence time of the human ear under a condition that the difference between the transmission durations of the audio signals of different frequencies satisfies the transmission duration difference, so that the audio signals transmitted through different channel speakers can be perceived as continuous by using a phenomenon of acoustic persistence of the human ear.
As an example, in fig. 3, t1-t2 is the distance of the farthest speaker from the human ear-the distance of the second farthest speaker from the human ear/34 cm in ms, and so on, and the total transmission time length of t1+ t2+ t3+ tx is less than 50 ms. Here, the preset audio transmission speed may be 34cm, which may refer to a distance that sound travels in the air for 1 ms.
In a preferred embodiment, for the left channel audio signal in a certain time, the audio signals with different frequencies in a certain time period can be obtained after time division multiplexing, and the cycle can be started again after all channels are transmitted once. Specifically, the transmitting of all channels once may refer to transmitting a time-division multiplexed audio signal of a certain audio signal of a left channel, and the next cycle may refer to time-division multiplexing of a next audio signal in the left channel until the audio signal of the left channel is transmitted according to different channels with different frequencies.
In the embodiment of the invention, the two-channel audio signals can be processed to obtain the audio signals with different frequencies, and the audio signals with different frequencies are played according to the preset transmission duration, wherein the total transmission duration of the audio signals with different frequencies does not exceed the auditory persistence time of the audio signals reaching human ears. By using the auditory persistence characteristic of human ears and adopting the time division multiplexing technology to screen the audio signals, the audio signals obtained by each sound channel in a certain time belong to the audio signals with different frequencies, and the realistic telepresence surrounding effect of multi-channel decoding is achieved.
It should be noted that, for simplicity of description, the method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the illustrated order of acts, as some steps may occur in other orders or concurrently in accordance with the embodiments of the present invention. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred and that no particular act is required to implement the invention.
Referring to fig. 4, a block diagram of an embodiment of an audio source playing apparatus according to the present invention is shown, and applied to a vehicle, the audio source playing apparatus specifically includes the following modules:
a binaural audio signal processing module 401, configured to obtain a binaural audio signal, and process the binaural audio signal to obtain a target audio signal; the target audio signal comprises audio signals of different frequencies;
and the audio signal playing module 402 is configured to play the audio signals with different frequencies according to a preset transmission duration, where the total transmission duration of the audio signals with different frequencies does not exceed an auditory persistence time of the audio signals reaching human ears.
In one embodiment of the invention, the vehicle comprises a plurality of speakers for playing different channel audio signals; the audio signal playing module 402 may include the following sub-modules:
the corresponding relation acquisition submodule is used for acquiring the corresponding relation between the audio signals with different frequencies and each loudspeaker;
the position distance determining submodule is used for determining the position distance between each loudspeaker and the human ear;
the transmission duration calculation submodule is used for calculating the audio transmission duration of the audio signals with different frequencies according to the corresponding relation and the position distance;
and the audio signal transmission submodule is used for playing the audio signals with different frequencies according to the audio transmission duration.
In one embodiment of the invention, the location distance comprises a plurality of location distances; the audio signals with different frequencies are subjected to signal connection according to a preset audio sequence; the correspondence obtaining sub-module may include the following units:
the position distance sorting unit is used for correspondingly sorting the plurality of loudspeakers according to the plurality of position distances in a sequence from far to near;
and the corresponding relation establishing unit is used for establishing the corresponding relation between the sequenced loudspeakers and the audio signals of the preset audio sequence.
In one embodiment of the invention, the audio signals of different frequencies comprise a first audio signal and a second audio signal; the transmission time period calculation sub-module may include the following units:
a position distance acquisition unit configured to acquire a first position distance and a second position distance from the plurality of position distances;
the transmission duration calculation unit is used for calculating the transmission duration by adopting the first position distance, the second position distance and a preset audio transmission speed;
the audio signal acquisition unit is used for respectively acquiring a first audio signal corresponding to a first loudspeaker corresponding to the first position distance and a second audio signal corresponding to a second loudspeaker corresponding to the second position distance according to the corresponding relation;
a transmission duration difference determining unit configured to use the transmission duration as a transmission duration difference between the first audio signal and the second audio signal; the transmission time length difference is used for representing the difference between the transmission time lengths of the audio signals with different frequencies;
and the transmission duration determining unit is used for determining the transmission durations of the audio signals with different frequencies according to the plurality of transmission duration differences and the auditory persistence time of the human ears.
In one embodiment of the present invention, in a case where a difference between transmission time periods of audio signals of different frequencies satisfies a transmission time period difference, a total transmission time period of the audio signals of different frequencies does not exceed an auditory persistence time of the human ear.
For the device embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, refer to the partial description of the method embodiment.
An embodiment of the present invention further provides a vehicle, including:
the sound source playing device comprises the sound source playing device, a processor, a memory and a computer program which is stored on the memory and can run on the processor, wherein when the computer program is executed by the processor, each process of the sound source playing method embodiment is realized, the same technical effect can be achieved, and the details are not repeated here to avoid repetition.
The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when being executed by a processor, the computer program implements each process of the sound source playing method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present invention 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 invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing terminal to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing terminal to cause a series of operational steps to be performed on the computer or other programmable terminal to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The sound source playing method, the sound source playing system and the sound source playing device provided by the invention are introduced in detail, and specific examples are applied in the text to explain the principle and the implementation mode of the invention, and the description of the above embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. An audio playing method, applied to a vehicle, the method comprising:
acquiring a two-channel audio signal, and processing the two-channel audio signal to obtain a target audio signal; the target audio signal comprises audio signals of different frequencies;
and playing the audio signals with different frequencies according to a preset transmission duration, wherein the total transmission duration of the audio signals with different frequencies does not exceed the auditory persistence time of the audio signals reaching human ears.
2. The method of claim 1, wherein the vehicle includes a plurality of speakers for playing different channel audio signals; the playing the audio signals with different frequencies according to the preset transmission duration includes:
acquiring the corresponding relation between the audio signals with different frequencies and each loudspeaker, and determining the position distance between each loudspeaker and the human ear;
calculating the audio transmission time length of the audio signals with different frequencies according to the corresponding relation and the position distance;
and playing the audio signals with different frequencies according to the audio transmission time length.
3. The method of claim 2, wherein the location distance comprises a plurality of location distances; the audio signals with different frequencies are subjected to signal connection according to a preset audio sequence;
the obtaining of the corresponding relationship between the audio signals of different frequencies and the speakers includes:
correspondingly sorting the plurality of loudspeakers according to the plurality of position distances in a sequence from far to near;
and establishing a corresponding relation between the sequenced loudspeakers and the audio signals of the preset audio sequence.
4. The method of claim 2, wherein the audio signals of different frequencies comprise a first audio signal and a second audio signal; the calculating the audio transmission duration of the audio signals with different frequencies according to the corresponding relation and the position distance includes:
obtaining a first position distance and a second position distance from the plurality of position distances;
calculating the transmission time length by adopting the first position distance, the second position distance and a preset audio transmission speed;
respectively acquiring a first audio signal corresponding to a first loudspeaker corresponding to the first position distance and a second audio signal corresponding to a second loudspeaker corresponding to the second position distance according to the corresponding relation;
taking the transmission time length as the transmission time length difference of the first audio signal and the second audio signal; the transmission time length difference is used for representing the difference between the transmission time lengths of the audio signals with different frequencies;
and determining the transmission time lengths of the audio signals with different frequencies according to the plurality of transmission time length differences and the auditory persistence time of the human ears.
5. The method according to claim 4, wherein in a case where a difference between transmission time periods of audio signals of different frequencies satisfies the transmission time period difference, a total transmission time period of the audio signals of different frequencies does not exceed an auditory persistence time of the human ear.
6. The audio playing system is characterized by being applied to a vehicle and comprising a sound source module, a DSP (digital signal processing) module and a loudspeaker module;
the sound source module is used for providing a two-channel audio signal;
the DSP digital signal processing module is used for processing the two-channel audio signal to obtain a target audio signal; the target audio signal comprises audio signals of different frequencies;
the loudspeaker module is used for playing the audio signals with different frequencies according to preset transmission duration, wherein the total transmission duration of the audio signals with different frequencies does not exceed the auditory persistence time of the audio signals reaching human ears.
7. The system of claim 6, further comprising a multi-channel power amplifier module; the multi-channel power amplifier module is used for transmitting the target audio signal to the loudspeaker module and pushing the loudspeaker module to play the target audio signal; the speaker module comprises a front left speaker module, a front right speaker module, a middle speaker module, a surrounding left speaker module, a surrounding right speaker module and a super bass speaker module.
8. An audio playback apparatus, for use in a vehicle, the apparatus comprising:
the device comprises a double-channel audio signal processing module, a target audio signal processing module and a control module, wherein the double-channel audio signal processing module is used for acquiring a double-channel audio signal and processing the double-channel audio signal to obtain a target audio signal; the target audio signal comprises audio signals of different frequencies;
and the audio signal playing module is used for playing the audio signals with different frequencies according to preset transmission duration, wherein the total transmission duration of the audio signals with different frequencies does not exceed the auditory persistence time of the audio signals reaching human ears.
9. A vehicle, characterized by comprising: audio playback device according to claim 8, a processor, a memory and a computer program stored on the memory and executable on the processor, which computer program, when being executed by the processor, carries out the steps of the audio playback method according to one of the claims 1 to 7.
10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the audio playback method according to one of claims 1 to 7.
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| CN202110156206.3A CN112954581B (en) | 2021-02-04 | 2021-02-04 | Audio playing method, system and device |
| PCT/CN2022/073991 WO2022166708A1 (en) | 2021-02-04 | 2022-01-26 | Audio playback method, system and apparatus, vehicle, and storage medium |
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| CN202110156206.3A CN112954581B (en) | 2021-02-04 | 2021-02-04 | Audio playing method, system and device |
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| WO2022166708A1 (en) * | 2021-02-04 | 2022-08-11 | 广州橙行智动汽车科技有限公司 | Audio playback method, system and apparatus, vehicle, and storage medium |
| WO2023051547A1 (en) * | 2021-09-30 | 2023-04-06 | 歌尔股份有限公司 | Intelligent device and control method therefor, and computer-readable storage medium |
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| WO2022166708A1 (en) | 2022-08-11 |
| CN112954581B (en) | 2022-07-01 |
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