CN110677777A - Audio data processing method, terminal and storage medium - Google Patents
Audio data processing method, terminal and storage medium Download PDFInfo
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- CN110677777A CN110677777A CN201910930729.1A CN201910930729A CN110677777A CN 110677777 A CN110677777 A CN 110677777A CN 201910930729 A CN201910930729 A CN 201910930729A CN 110677777 A CN110677777 A CN 110677777A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
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- H—ELECTRICITY
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Abstract
The invention discloses an audio data processing method, a terminal and a storage medium, wherein the audio data processing method comprises the following steps: acquiring frame data in audio data; processing the frame data, and acquiring channel data contained in the frame data, so that the time interval for acquiring two adjacent channel data is a preset bit clock period; transmitting the channel data to a speaker so that the speaker sounds according to the channel data. According to the invention, the frame data in the audio data is processed, so that the time interval for acquiring the data of two adjacent sound channels is a preset bit clock period, the time interval for acquiring different sound channel data is greatly shortened, the time delay for the sound channel data of different sound channels to reach the loudspeaker is small, and the sound emitted by the loudspeaker can restore the sound effect of a recording site.
Description
Technical Field
The present invention relates to the field of audio data processing technologies, and in particular, to an audio data processing method, a terminal, and a storage medium.
Background
The audio data is the digital data that will be recorded the sound conversion, at the recording in-process, different recording equipment is almost recording the sound of different sound channels simultaneously, handle audio data, and send to the speaker and carry out the in-process of broadcast, the time that different sound channel data reach the speaker is very important to the effect of restoreing the recording scene, the sound that will guarantee that the human ear can send according to the speaker restores the on-the-spot effect of recording, just need each sound channel data also almost simultaneously to reach the speaker, time delay is little between the sound that different sound channel data that the speaker broadcast correspond like this, sound effect when more pressing close to the recording. However, there is no audio data processing method in the prior art that effectively reduces the delay of each channel data in the audio data reaching the speaker.
Thus, there is still a need for improvement and development of the prior art.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide an audio data processing method, a terminal and a storage medium for overcoming the above-mentioned drawbacks in the prior art, and to solve the problem that the audio data processing method in the prior art cannot truly restore a recording site due to a large delay between data of different sound channels.
The technical scheme adopted by the invention for solving the technical problem is as follows:
an audio data processing method, wherein the audio data processing method comprises:
acquiring frame data in audio data;
processing the frame data, and acquiring channel data contained in the frame data, so that the time interval for acquiring two adjacent channel data is a preset bit clock period;
transmitting the channel data to a speaker so that the speaker sounds according to the channel data.
The audio data processing method, wherein the audio data includes at least one frame data, and the acquiring the frame data in the audio data specifically includes:
and detecting frame headers in the audio data, and acquiring data between two adjacent frame headers as the frame data.
The audio data processing method, wherein the frame data includes at least one piece of channel data, each piece of channel data is composed of at least one bit, and the acquiring of the channel data included in the frame data specifically includes:
and acquiring the bits in the channel data according to the bit clock period.
The audio data processing method, wherein the number of bits in the channel data is equal to the bit width of the channel data.
The audio data processing method, wherein the acquiring bits in each channel data according to the bit clock cycle specifically includes:
and after the first bit in each channel data is sequentially acquired according to the bit clock period, the second bit in each channel data is sequentially acquired according to the bit clock period until all bits in each channel data are acquired.
In the audio data processing method, the time interval between two adjacent bits is the bit clock period.
The audio data processing method, wherein the transmitting the channel data to a speaker specifically includes:
and decoding the channel data, and transmitting the decoded channel data to a loudspeaker.
The audio data processing method, wherein the transmitting the decoded channel data to a speaker specifically includes:
and transmitting the channel data to the corresponding loudspeaker according to the corresponding relation between the channel data and the loudspeaker.
A terminal, comprising: a processor, a storage medium communicatively coupled to the processor, wherein the storage medium is adapted to store a plurality of instructions; the processor is adapted to invoke instructions in the storage medium to perform the steps of implementing the audio data processing method of any of the above.
A storage medium, wherein the storage medium stores one or more programs, which are executable by one or more processors to implement the steps of the audio data processing method as described in any one of the above.
The invention has the beneficial effects that: according to the invention, the frame data in the audio data is processed, so that the time interval for acquiring the data of two adjacent sound channels is a preset bit clock period, the time interval for acquiring different sound channel data is greatly shortened, the time delay for the sound channel data of different sound channels to reach the loudspeaker is small, and the sound emitted by the loudspeaker can restore the sound effect of a recording site.
Drawings
FIG. 1 is a flow chart of a first embodiment of an audio data processing method provided by the present invention;
FIG. 2 is a schematic diagram of one possible implementation of acquiring channel data;
FIG. 3 is a schematic diagram of one embodiment of acquiring channel data;
fig. 4 is a schematic diagram of a terminal provided by the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In light of the foregoing, the present invention provides an audio data processing method, a serial port, and a storage medium, so as to overcome the defect that in the prior art, there is no audio data processing method that effectively reduces the delay of each channel data in the audio data reaching the speaker.
Example one
Referring to fig. 1, fig. 1 is a flowchart illustrating an audio data processing method according to a first embodiment of the present invention.
As can be seen from fig. 1, in the present embodiment, the audio data processing method includes the steps of:
and S100, acquiring frame data in the audio data.
Specifically, the audio data is obtained by digitizing sound recorded at a recording site, and may be stored in a format such as cda or mp3, and the audio data may be read through an audio interface. The audio data is stored in units of frames, that is, the audio data includes at least one frame data, the frame data is obtained according to a frame header in the audio data, and the obtaining of the frame data in the audio data specifically includes:
and detecting frame headers in the audio data, and acquiring data between two adjacent frame headers as the frame data. Specifically, in order to process the audio data conveniently, when the audio data is generated by performing digital processing on the recorded sound, the frame header is set in the audio data, the frame header represents the start of frame data, data between two adjacent frame headers is the frame data, and data between two adjacent frame headers is acquired as the frame data.
S200, processing the frame data, and acquiring the channel data contained in the frame data, so that the time interval for acquiring two adjacent channel data is a preset bit clock period.
After the frame data is acquired, the frame data may be processed, specifically, the frame data includes at least one piece of channel data, and each piece of channel data is composed of at least one bit.
The acquiring of the channel data included in the frame data specifically includes: and acquiring the bits in the channel data according to the bit clock period.
The number of bits in the channel data is equal to the bit width of the channel data, the bit width is determined by the format of the audio data, i.e. is defined when the audio data is generated, for example, the bit width of the audio data in CD format is 16, the bit clock period is the time interval between the acquisition of two adjacent bits, specifically, the time interval from the beginning of receiving the current bit to the beginning of receiving the next bit, the bit clock period is determined by the bit width and the sampling frequency of the audio data, the sampling frequency of the audio data is also related to the format of the audio data, the bit clock period is 1/(sampling frequency M × N), for example, the sampling frequency in CD format is 44.1kHz, that is, the sampling period of each frame in the audio data is (1/44.1) ms, that is, the transmission time of each frame data is 1/44.1 ms, the number of channel data in each frame data is represented by N, the bit width of the frame data is represented by M, and the bit clock period is (1/(44.1 × M × N)) ms. When the audio data is acquired through the audio data interface, the bits are acquired according to the bit clock period, so that the audio data transmitting end and the audio data receiving end can be prevented from transmitting the audio data by using the same period, and error codes caused by inconsistent frequency of the transmitting and receiving bits are avoided.
The obtaining of the bits in each channel data according to the bit clock cycle may be sequentially obtaining all the bits in each channel data, that is, obtaining all the bits in the first channel data, obtaining all the bits in the second channel data until obtaining all the bits in all the channel data, as shown in fig. 2, it can be seen that, obtaining all the bits in each channel data according to the manner shown in fig. 2, obtaining the time interval between two adjacent channel data in the frame data is the bit clock cycle M, obtaining the time interval between all the bits in the first channel data and obtaining all the bits in the nth channel data in the frame data is the bit clock cycle (N-1) × M, and as described above, the bit clock cycle is 1/(sampling frequency M) × N), then, the maximum delay of the channel data in the frame data, that is, the interval from the time of acquiring all bits in the first channel data to the time of acquiring all bits in the nth channel data in the frame data, may reach (N-1)/(sampling frequency × N), where N is the number of channel data in the frame data, M is the bit width of the frame data, and assuming that the sampling frequency of the audio data is 44.1kHz, the bit width of the frame data is 16, and there are 7 channel data in the frame data in total, then the delay between the first channel data and the seventh channel data is about 0.02 ms.
The audio data is obtained by digitally processing the sound recorded by the recording equipment on the recording site, the sound of each sound channel is almost recorded by each recording equipment on the recording site, and the shorter the delay of each sound channel data reaching the loudspeaker is, the more the sound effect of the recording site can be restored when the audio data is processed and played.
In this embodiment, the acquiring bits in each channel data according to the bit clock cycle specifically includes:
and after the first bit in each channel data is sequentially acquired according to the bit clock period, the second bit in each channel data is sequentially acquired according to the bit clock period until all bits in each channel data are acquired.
As shown in fig. 3, in this embodiment, first, a first bit in each piece of channel data is obtained sequentially according to the bit clock period, that is, a first bit in the first piece of channel data is obtained, then a first bit in second piece of channel data is obtained until a first bit in nth piece of channel data is obtained, then a second bit in each piece of channel data is obtained sequentially according to the bit clock period, and this is repeated until all bits in each piece of channel data are obtained, where in the process of obtaining bits in each piece of channel data, a time interval between two adjacent bits is the bit clock period. As can be seen from fig. 3, according to the audio data processing method provided in this embodiment, the time interval between acquiring two adjacent pieces of channel data is the bit clock period, the time interval between acquiring all bits in the first channel data and acquiring all bits in the nth channel data in the frame data is (N-1)/(sampling frequency M x N), assuming that the sampling frequency of the audio data is 44.1kHz, the bit width of the frame data is 16, and there are 7 pieces of channel data in the frame data, then the delay between two adjacent pieces of channel data is 0.0002ms, and the delay between the first channel data and the seventh channel data is about 0.0012ms, and it can be seen that according to the audio data processing method provided in this embodiment, the delay between the pieces of channel data in the frame data is very short, so that the delay of the pieces of channel data to reach the speaker is also very short, and the audio data are played almost simultaneously, so that the sound effect played according to the audio data can be improved, and the sound effect of the recording site can be restored.
Referring to fig. 1 again, in the first embodiment, the audio data processing method further includes the steps of:
s300, transmitting the channel data to a loudspeaker so that the loudspeaker produces sound according to the channel data.
Specifically, the transmitting the channel data to the speaker is to decode the channel data, transmit the decoded channel data to the speaker, and play the sound by the speaker according to the decoded channel data.
The frame data includes at least one piece of channel data, and the channel data can obtain a correct sound effect only when being played on a corresponding speaker, so that transmitting the decoded channel data to the speaker specifically includes:
and transmitting the channel data to the corresponding loudspeaker according to the corresponding relation between the channel data and the loudspeaker. The correspondence between the channel data and the speaker may be a correspondence by a channel name, for example, if the channel data is data of a left main channel, the channel data needs to be transmitted to the left main speaker; the correspondence between the channel data and the speakers may also be a correspondence by a number, for example, if the channel data is a channel number 1, the channel data is transmitted to the speaker number 1, and so on. Of course, those skilled in the art will understand that the above correspondence relationship between the channel data and the speakers is only a distance, and the present invention is not limited to the above correspondence relationship.
In summary, according to the audio data processing method provided by the present invention, frame data in the audio data is processed, so that a time interval for acquiring two adjacent channel data is a preset bit clock period, and a time interval for acquiring different channel data is greatly shortened, so that a time delay between the channel data of different channels arriving at a speaker is reduced, and a sound effect of a recording site is more restored by a sound emitted by the speaker.
It should be understood that, although the steps in the flowcharts shown in the figures of the present specification are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a portion of the steps in the flowchart may include multiple sub-steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of performing the sub-steps or stages is not necessarily sequential, but may be performed alternately or alternately with other steps or at least a portion of the sub-steps or stages of other steps.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, databases, or other media used in embodiments provided herein may include non-volatile and/or volatile memory. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
Example two
Based on the above embodiments, the present invention further provides a terminal, and a schematic block diagram thereof may be as shown in fig. 4. The terminal comprises a processor, a memory, a network interface, a display screen and a temperature sensor which are connected through a system bus. Wherein the processor of the terminal is configured to provide computing and control capabilities. The memory of the terminal comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The network interface of the terminal is used for connecting and communicating with an external terminal through a network. The computer program is executed by a processor to implement an audio data processing method. The display screen of the terminal can be a liquid crystal display screen or an electronic ink display screen, and the temperature sensor of the terminal is arranged in the terminal in advance and used for detecting the current operating temperature of internal equipment.
It will be understood by those skilled in the art that the block diagram of fig. 4 is a block diagram of only a portion of the structure associated with the inventive arrangements and is not intended to limit the terminals to which the inventive arrangements may be applied, and that a particular terminal may include more or less components than those shown, or may have some components combined, or may have a different arrangement of components.
In one embodiment, there is provided a terminal, including: a processor, a storage medium communicatively coupled to the processor, the storage medium beginning with storing a plurality of instructions, the processor adapted to invoke the instructions in the storage medium, the processor invoking the instructions in the storage medium to perform at least the following:
acquiring frame data in audio data;
processing the frame data, and acquiring channel data contained in the frame data, so that the time interval for acquiring two adjacent channel data is a preset bit clock period;
transmitting the channel data to a speaker so that the speaker sounds according to the channel data.
Wherein the audio data includes at least one of the frame data, and the acquiring the frame data in the audio data specifically includes:
and detecting frame headers in the audio data, and acquiring data between two adjacent frame headers as the frame data.
Wherein the frame data includes at least one piece of the channel data, each piece of the channel data is composed of at least one bit, and the acquiring the channel data included in the frame data specifically includes:
and acquiring the bits in the channel data according to the bit clock period.
Wherein the number of bits in the channel data is equal to the bit width of the channel data.
Wherein the acquiring bits in each channel data according to the bit clock cycle specifically includes:
and after the first bit in each channel data is sequentially acquired according to the bit clock period, the second bit in each channel data is sequentially acquired according to the bit clock period until all bits in each channel data are acquired.
Wherein, the time interval for acquiring two adjacent bits is the bit clock period.
Wherein transmitting the channel data to a speaker specifically comprises:
and decoding the channel data, and transmitting the decoded channel data to a loudspeaker.
Wherein the transmitting the decoded channel data to a speaker specifically includes:
and transmitting the channel data to the corresponding loudspeaker according to the corresponding relation between the channel data and the loudspeaker.
EXAMPLE III
The present invention also provides a storage medium storing one or more programs executable by one or more processors to implement the steps of the audio data processing method according to the above embodiment.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (10)
1. An audio data processing method, characterized in that the audio data processing method comprises:
acquiring frame data in audio data;
processing the frame data, and acquiring channel data contained in the frame data, so that the time interval for acquiring two adjacent channel data is a preset bit clock period;
transmitting the channel data to a speaker so that the speaker sounds according to the channel data.
2. The audio data processing method according to claim 1, wherein the audio data includes at least one frame data, and the acquiring the frame data in the audio data specifically includes:
and detecting frame headers in the audio data, and acquiring data between two adjacent frame headers as the frame data.
3. The audio data processing method according to claim 1, wherein the frame data includes at least one piece of the channel data, each piece of the channel data is composed of at least one bit, and the acquiring the channel data included in the frame data specifically includes:
and acquiring the bits in the channel data according to the bit clock period.
4. The audio data processing method according to claim 3, wherein the number of bits in the channel data is equal to the bit width of the channel data.
5. The audio data processing method of claim 4, wherein the obtaining bits in each channel data according to the bit clock cycle specifically comprises:
and after the first bit in each channel data is sequentially acquired according to the bit clock period, the second bit in each channel data is sequentially acquired according to the bit clock period until all bits in each channel data are acquired.
6. The audio data processing method of claim 5, wherein a time interval between two adjacent bits is the bit clock period.
7. The audio data processing method according to any one of claims 1 to 6, wherein the transmitting the channel data to a speaker specifically comprises:
and decoding the channel data, and transmitting the decoded channel data to a loudspeaker.
8. The audio data processing method of claim 7, wherein the transmitting the decoded individual channel data to a speaker specifically comprises:
and transmitting the channel data to the corresponding loudspeaker according to the corresponding relation between the channel data and the loudspeaker.
9. A terminal, the terminal comprising: a processor, a storage medium communicatively coupled to the processor, wherein the storage medium is adapted to store a plurality of instructions; the processor is adapted to invoke instructions in the storage medium to perform the steps of implementing the audio data processing method of any of the preceding claims 1-8.
10. A storage medium storing one or more programs, the one or more programs being executable by one or more processors to implement the steps of the audio data processing method according to any one of claims 1 to 8.
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