CN112436898B - Voice data transmission method, computer device and computer readable storage medium - Google Patents
Voice data transmission method, computer device and computer readable storage medium Download PDFInfo
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- CN112436898B CN112436898B CN202011237802.6A CN202011237802A CN112436898B CN 112436898 B CN112436898 B CN 112436898B CN 202011237802 A CN202011237802 A CN 202011237802A CN 112436898 B CN112436898 B CN 112436898B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B11/00—Transmission systems employing sonic, ultrasonic or infrasonic waves
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
Abstract
The invention provides a voice data transmission method, a computer device and a computer readable storage medium, wherein the method comprises the steps of storing audio data output by a sending end in a first sending memory; acquiring the transmission time sequence of each audio data, and storing the data of the first sending memory in a second sending memory according to the transmission time sequence of each audio data, wherein the audio data of each channel stored in the second sending memory comprises a transmission line mark and a transmission line time sequence mark; and transmitting the audio data of each channel to the second receiving memory according to the transmission line mark and the transmission line time sequence mark corresponding to the audio data of each channel, remapping the audio data of the second receiving memory according to the transmission time sequence of the audio data of each channel, and storing the audio data of each channel to the first receiving memory. The invention also provides a computer device and a computer readable storage medium for realizing the method. The invention can reduce the software overhead when the audio data is reordered.
Description
Technical Field
The present invention relates to the technical field of voice data processing, and in particular, to a voice data transmission method, a computer apparatus implementing the method, and a computer-readable storage medium.
Background
Many existing intelligent electronic devices have a function of playing audio, and therefore, the electronic devices need to transmit audio data. The most widely used digital audio transmission standard at present is the I2S (integrated circuit built-in audio bus) serial bus interface, which is specifically established by philips for digital audio equipment, and which defines the transmission format of digital audio data by a bit clock BCLK, a frame clock LRCK, a serial data input SDI, and a serial data output SDO. The serial interface realizes the specification of stereo (left channel and right channel) transmission and can transmit data of two channels.
Generally, audio data of both left and right channels includes audio data of multiple channels, and the audio data of the multiple channels needs to be transmitted through multiple different transmission lines. Due to the need of audio processing, sometimes the slave computer only needs to receive the audio data of a part of channels and perform a reordering operation on the received audio data, in this case, the audio data that needs to be received needs to be intercepted by a software program, which increases the time for processing the audio data by software and results in a longer time for processing the audio data. For example, chinese patent application publication No. CN 106911987a discloses a method and system for transmitting multi-channel audio data, in which audio data is transmitted via TDM protocol, for example, audio data of a specific channel is enabled, and audio data corresponding to the enabled channel is received according to a preset sequence. However, this method requires that after the slave receives the audio data, the software realizes the reordering of the transmission and reception of the audio data, which results in a long time for processing the audio data.
Disclosure of Invention
It is a primary object of the present invention to provide a voice data transmission method capable of reordering transmitted audio data and reducing software running time.
Another object of the present invention is to provide a computer apparatus for implementing the above voice data transmission method.
It is still another object of the present invention to provide a computer-readable storage medium for implementing the above voice data transmission method.
In order to achieve the main object of the present invention, the voice data transmission method provided by the present invention comprises storing audio data output from a transmitting end in a first transmitting memory; acquiring the transmission time sequence of each audio data, and storing the data of the first sending memory in a second sending memory according to the transmission time sequence of each audio data, wherein the audio data of each channel stored in the second sending memory comprises a transmission line mark and a transmission line time sequence mark; and transmitting the audio data of each channel to the second receiving memory according to the transmission line mark and the transmission line time sequence mark corresponding to the audio data of each channel, remapping the audio data of the second receiving memory according to the transmission time sequence of the audio data of each channel, and storing the audio data of each channel to the first receiving memory.
According to the scheme, before the audio data are sent, the audio data can be reordered through the transmission time sequence of the audio data of each channel, and the audio data received by the audio receiver are the reordered audio data, so that if only part of the audio data need to be transmitted or special processing is carried out on part of the audio data, the special processing of the audio data of a specific channel can be realized through the reordering of the audio data.
The sequencing of the audio data is not realized on the slave machine through a software program, and the audio data is stored in a specific sequence through the plurality of memories, so that the sequencing of the audio data can be simply realized, the situation that the slave machine receives the audio data and then carries out the reordering of the audio data in a software mode is avoided, and the processing efficiency of the audio data is improved.
Preferably, the transmitting of the audio data to the second receiving memory includes: and determining a transmission line of each audio data and a transmission time sequence on the transmission line according to the transmission line mark and the transmission line time sequence mark corresponding to each audio data, and sending the audio data of each channel to the second receiving memory through the corresponding transmission line according to the transmission time sequence on the transmission line.
Therefore, the transmission line and the transmission time sequence of the audio data of each channel can be accurately marked through the transmission line mark and the transmission line time sequence mark, the mark is very simple and flexible to use, and the accuracy of the audio data transmission time sequence is improved.
Further, the step of sending the audio data of each channel to the second receiving memory through the corresponding transmission line according to the transmission timing sequence on the transmission line includes: the audio data of each channel is sent to the audio receiver by the audio transmitter, and the audio receiver stores the received audio data of each channel to the second receiving memory.
The audio data is transmitted through the audio transmitter and the audio receiver, namely the transmission of the audio data is realized through the existing I2S serial interface bus, the complexity of audio data transmission is reduced, and the invention has good compatibility.
Further, the bit width of the second transmitting memory and/or the second receiving memory is a preset bit width.
Therefore, by presetting the bit width of the second transmitting memory and the second receiving memory, the storage space of the second transmitting memory and the second receiving memory can be utilized to the maximum extent.
The bit width of the second sending memory is the product of the maximum transmission channel number and the storage byte number of the audio data of each channel; and/or the bit width of the second receiving memory is the product of the maximum transmission channel number and the storage byte number of the audio data of each channel.
Therefore, the bit width of the second sending memory and the second receiving memory is set to be the product of the maximum transmission channel number and the storage byte number of the audio data of each channel, so that the second sending memory and the second receiving memory can store the most audio data which can be transmitted at one time, the waiting time of audio data transmission is reduced, and the transmission efficiency of the audio data is improved.
In a further embodiment, the first sending memory and/or the first receiving memory is a first-in first-out memory.
The first-in first-out memory is a common memory, and the first-in first-out processor can keep the time sequence of the audio data of the first sending memory consistent with the time sequence of the audio data of the host, and also ensure that the time sequence of the audio data received from the slave is consistent with the realization of the first receiving memory.
Further, the obtaining of the transmission timing of the audio data of each channel includes: the transmission timing of the audio data of each channel is acquired by the transmission controller.
Therefore, the accuracy of the audio data transmission sequence can be improved by controlling the transmission sequence of the audio data of each channel through the transmission controller.
In order to achieve the above another object, the present invention provides a computer device including a processor and a memory, wherein the memory stores a computer program, and the computer program implements the steps of the voice data transmission method when executed by the processor.
To achieve the above-mentioned further object, the present invention provides a computer program stored on a computer readable storage medium, wherein the computer program is executed by a processor to implement the steps of the voice data transmission method.
Drawings
Fig. 1 is a block diagram of a system architecture to which an embodiment of the voice data transmission method of the present invention is applied.
Fig. 2 is a schematic diagram of audio data of each channel to which an embodiment of the voice data transmission method of the present invention is applied.
Fig. 3 is a block diagram of a hardware circuit configuration to which an embodiment of the voice data transmission method of the present invention is applied.
Fig. 4 is a flowchart of a voice data transmission method according to an embodiment of the present invention.
Fig. 5 is a schematic diagram of audio data mapping of each channel according to an embodiment of the voice data transmission method of the present invention.
The invention is further explained with reference to the drawings and the embodiments.
Detailed Description
The voice data transmission method is applied to the intelligent electronic equipment, preferably, the intelligent electronic equipment has a function of playing audio data, and the transmission of the audio data needs to be realized between the host and the slave. It should be noted that the master and the slave of the present invention are circuit modules integrated in the intelligent electronic device, and are not independent electronic devices. Preferably, the intelligent electronic device is provided with a processor and a memory, the memory stores a computer program, and the processor implements the voice data transmission method by executing the computer program.
The embodiment of the voice data transmission method comprises the following steps:
the present embodiment is applied to a system having an I2S (integrated circuit built-in audio bus) serial bus interface, and referring to fig. 1, a master 11 and a slave 12 communicate with each other through a plurality of signals, one signal line is used for transmitting a bit clock signal BCLK and the other signal line is used for transmitting a channel clock signal WS _ CLK, and the present embodiment further includes a plurality of data transmission lines, such as serial data input transmission lines SDI0 to SDI3 and serial data output transmission lines SDO0 to SDO 3.
In general, audio data includes audio data of a left channel and audio data of a right channel, and referring to fig. 2, the audio data of the left channel is transmitted when the channel clock signal WS _ CLK is a low level signal, and the audio data of the right channel is transmitted when the channel clock signal WS _ CLK is a high level signal. In this embodiment, each transmission line may transmit audio data of a plurality of channels, for example, the transmission line SDI0 may transmit audio data of channels Slot0 to Slot-1. Preferably, each transmission line has a unique channel coding for the transmitted audio data, e.g., Slot0, Slot1, etc. It can be seen that, in the present embodiment, the maximum transmission data that can be transmitted by the host 11 at a time is the product of the number of transmission lines and the number of channels transmitted by each transmission line. For example, the number of transmission lines is 4, and the number of channels of audio data that can be transmitted per transmission line is N-1, the maximum amount of data that can be transmitted by the host 11 at a time is 4 × (N-1).
The present embodiment achieves reordering of audio data transmission by the following two aspects: firstly, the audio data of each channel to be transmitted can be configured and selected, for example, a register is designed to store the reordered audio data, and the channel number of the audio data to be transmitted and received and the ID of each channel can be configured, so that the transmission or reception of the audio data of a configurable and selectable part can be realized. Secondly, the audio data is reordered by selecting the channel ID of the audio data, namely, the mapping and remapping functions of the corresponding audio data are realized by selecting the channel ID, the selection of different channel IDs is realized, and the audio data at any position can be selected for transmission. Through the method, the audio data at any position can be selected for transmission, so that the audio data is prevented from being reordered in a software mode.
Referring to fig. 3 and 4, in the audio data transmission, step S1 is first executed to receive the audio data transmitted by the host 11, and step S2 is executed to transmit the audio data transmitted by the host 11 to the first transmission memory 21, where the first transmission memory 21 is a first-in first-out register in this embodiment, so that the order of the audio data stored in the first transmission memory 21 is consistent with the order of the audio data transmitted by the host 11.
Referring to fig. 5, the audio Data stored in the first transmission memory 21 are Data0, Data1, Data2 … DataN-1, and the like in this order, and the audio Data are not allocated to a transmission line, nor are channels transmitted on the transmission line, and further, the transmission timing of the audio Data of each channel on each transmission line is not determined.
Then, step S3 is performed to acquire the transmission timing of each audio data, for example, the transmission controller 25 receives the transmission timing for controlling the transmission of each audio data, and preferably, the transmission controller 25 controls the transmission line for the transmission of each audio data and the transmission timing on the transmission line, and stores each audio data in the second transmission memory 22 according to the received timing, that is, step S4 is performed.
It can be seen that the present embodiment achieves reordering of audio data, that is, remapping of audio data, by the transmission controller 25 storing individual audio data from the first transmission memory 21 to the second transmission memory 22. In this embodiment, the remapping parameter includes a transmission timing tag rx/tx _ data _ slotnum _ cfg of the audio data, where the tag is used to tag the reordered timing of each audio data, that is, at what timing the audio data of each channel should be ordered. The transmission controller 25 stores the audio data of the first transmission memory 21 into the second transmission memory 22 according to the transmission timing flag rx/tx _ data _ slotnum _ cfg of the audio data of each channel, and therefore, the order of the audio data of each channel stored in the second transmission memory 22 is not completely the same as the order of the audio data of each channel stored in the first transmission memory 21.
Preferably, the second transmission memory 22 is a register whose bit width can be set in advance, for example, the bit width of the second transmission memory 22 is a product of the maximum number of transmission channels and the number of bytes of stored audio data of each channel, and assuming that the maximum number of channels that can be transmitted by one transmission line is N-1 and the number of bytes of audio data of each channel is 32 bytes, the bit width of the second transmission memory 22 is 32 × (N-1).
After the transmission controller 25 stores the audio data of the first transmission memory 21 in the second transmission memory 22 according to the transmission timing flag rx/tx _ data _ slotnum _ cfg, the transmission controller writes the transmission line flag dataline _ sel _ cfg and the transmission line timing flag slotnum _ cfg into the audio data of each channel stored in the second transmission memory 22. The transmission line flag dataline _ sel _ cfg is used to indicate which transmission line the audio data of the channel is transmitted through, for example, the transmission line SDI0 or the transmission line SDI1, and since the audio data transmitted on each transmission line is also timing-required, the timing of the audio data of each channel on the transmission line needs to be marked by the transmission line timing flag slotnum _ cfg.
Next, step S5 is executed, the audio transmitter (transmitter)23 transmits the audio data of each transmission line to the audio receiver (receiver)26, as shown in fig. 5, the router 30 transmits the audio data of each channel stored in the second transmission memory 22 to each transmission line according to the transmission line flag dataline _ sel _ cfg and the transmission line timing flag slotnum _ cfg of each audio data, and the audio transmitter 23 transmits the audio data of a plurality of channels on each transmission line to the audio receiver 26 according to a predetermined timing.
After the audio receiver 26 receives the audio data of each transmission line, step S6 is executed to store the audio data of each channel in the second receiving memory 27. In this embodiment, the second receiving memory 27 is a register with a preset bit width, for example, the bit width of the second receiving memory 27 is a product of the maximum number of transmission channels and the number of bytes of stored audio data of each channel, and assuming that the maximum number of channels that can be transmitted by one transmission line is N-1, and the number of bytes of audio data of each channel is 32 bytes, the bit width of the second receiving memory 27 is 32 × (N-1). It can be seen that the bit width of the second receive memory 27 is equal to the bit width of the second transmit memory 22.
Since the transmission lines transmit the audio data of the channels at a predetermined timing, the second receiving memory 27 stores the audio data of the channels in the same order as the second transmitting memory 22. The audio transmitter 23 may transmit only the audio data on a certain transmission line if it is necessary to transmit only the audio data on the transmission line, or may transmit the audio data requiring special processing from the same transmission line if it is necessary to perform special processing on the audio data of certain channels. By setting the transmission line of the audio data of each channel and the transmission time sequence on the transmission line, the audio data of each channel can be conveniently reordered, and the reordered audio data are transmitted, so that the audio data related to the operation are stored together, and the subsequent operation is facilitated.
Then, step S7 is executed, and the receiving controller 29 stores the audio data of each channel stored in the second receiving memory 27 into the first receiving memory 28, in this embodiment, the first receiving memory 28 is a first-in first-out memory. Furthermore, the receiving controller 29 obtains the transmission timing flag rx/tx _ data _ slotnum _ cfg of the audio data of each channel, so that the audio data of the second receiving memory 27 can be reordered according to the transmission timing flag rx/tx _ data _ slotnum _ cfg of the audio data of each channel and stored in the first receiving memory 28, and thus the timing of the audio data stored in the first receiving memory 28 is ordered according to a predetermined order.
Finally, step S8 is executed, and the reception controller 29 transmits the audio data stored in the first reception memory 28 to the slave 12. Since the first receiving memory 28 is a first-in first-out register, it is possible to ensure that the order of the audio data of the respective channels transferred to the slave 12 is the same as the timing of the audio data of the respective channels written into the first receiving memory 28.
Therefore, the channel ID is selected through the transmission of the audio data of each channel, and the storage position of the audio data of each channel can be determined, so that the reordering of the audio data is realized. In the embodiment, the sequence of the audio data of each channel is reordered through the plurality of marks in the transmission process of the audio data, and the reordering is not required to be performed in a software mode after the slave receives the audio data, so that the reordering time of the audio data can be reduced, and the processing efficiency of the audio data can be improved.
The embodiment of the computer device comprises:
the computer apparatus of this embodiment may be an intelligent electronic device, and the computer apparatus includes a processor, a memory, and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the steps of the voice data transmission method are implemented.
For example, a computer program may be partitioned into one or more modules that are stored in a memory and executed by a processor to implement the modules of the present invention. One or more of the modules may be a series of computer program instruction segments capable of performing certain functions, which are used to describe the execution of the computer program in the terminal device.
The Processor may be a Central Processing Unit (CPU), or may be other general-purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, a discrete Gate or transistor logic device, a discrete hardware component, or the like. The general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like, the processor being the control center of the terminal device and various interfaces and lines connecting the various parts of the whole terminal device.
The memory may be used to store computer programs and/or modules, and the processor may implement various functions of the terminal device by running or executing the computer programs and/or modules stored in the memory and invoking data stored in the memory. The memory may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. In addition, the memory may include high speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), at least one magnetic disk storage device, a Flash memory device, or other volatile solid state storage device.
Computer-readable storage medium embodiments:
the computer program stored in the computer device may be stored in a computer-readable storage medium if it is implemented in the form of a software functional unit and sold or used as a separate product. Based on such understanding, all or part of the flow in the method according to the above embodiments may be implemented by a computer program, which may be stored in a computer readable storage medium and used by a processor to implement the steps of the voice data transmission method.
Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer readable medium may include: any entity or device capable of carrying computer program code, recording medium, U.S. disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution media, and the like. It should be noted that the computer readable medium may contain other components which may be suitably increased or decreased as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, in accordance with legislation and patent practice, the computer readable medium does not include electrical carrier signals and telecommunications signals.
Finally, it should be emphasized that the present invention is not limited to the above-described embodiments, such as the variation of the number of transmission lines, or the variation of the number of audio data channels transmitted by each transmission line, etc., and these variations should also be included in the protection scope of the present claims.
Claims (8)
1. A method of voice data transmission, comprising:
storing the audio data output by the transmitting end in a first transmitting memory;
the method is characterized in that:
acquiring the transmission time sequence of the audio data of each channel, and storing the data of the first sending memory into a second sending memory according to the transmission time sequence of the audio data of each channel, wherein the audio data of each channel stored in the second sending memory comprises a transmission line mark and a transmission line time sequence mark;
transmitting the audio data of each channel to a second receiving memory according to the transmission line marks corresponding to the audio data of each channel and the transmission line time sequence marks, remapping the audio data of the second receiving memory according to the transmission time sequence of the audio data of each channel, and storing the audio data of each channel to a first receiving memory;
wherein transmitting the audio data of each channel to the second receiving memory comprises: and determining a transmission line of each audio data and a transmission time sequence on the transmission line according to the transmission line marks and the transmission line time sequence marks corresponding to the plurality of audio data, and sending the audio data of each channel to the second receiving memory through the corresponding transmission line according to the transmission time sequence on the transmission line.
2. The voice data transmission method according to claim 1, wherein:
the transmitting the audio data of each channel to the second receiving memory through the corresponding transmission line according to the transmission timing sequence on the transmission line includes: and the audio data of each channel is sent to an audio receiver by an audio transmitter, and the audio receiver stores the received audio data of each channel to the second receiving memory.
3. The voice data transmission method according to claim 1 or 2, characterized in that:
the bit width of the second sending memory and/or the second receiving memory is a preset bit width.
4. The voice data transmission method according to claim 3, wherein:
the bit width of the second sending memory is the product of the maximum transmission channel number and the storage byte number of the audio data of each channel; and/or
The bit width of the second receiving memory is the product of the maximum transmission channel number and the storage byte number of the audio data of each channel.
5. The voice data transmission method according to claim 1 or 2, characterized in that:
the first sending memory and/or the first receiving memory are first-in first-out memories.
6. The voice data transmission method according to claim 1 or 2, characterized in that:
the acquiring of the transmission timing of the audio data of each channel includes: the transmission timing of the audio data of each channel is acquired by the transmission controller.
7. A computer arrangement, comprising a processor and a memory, the memory storing a computer program which, when executed by the processor, carries out the steps of the voice data transmission method according to any one of claims 1 to 6.
8. A computer-readable storage medium having stored thereon a computer program, characterized in that: the computer program, when being executed by a processor, carries out the steps of the voice data transmission method according to any one of claims 1 to 6.
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| CN104221402A (en) * | 2012-02-15 | 2014-12-17 | 三星电子株式会社 | Data transmitting apparatus, data receiving apparatus, data transreceiving system, data transmitting method, data receiving method and data transreceiving method |
| CN108738007A (en) * | 2018-06-06 | 2018-11-02 | 科大讯飞股份有限公司 | A kind of audio frequency transmission method, equipment and system |
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| CN108989246A (en) * | 2017-06-02 | 2018-12-11 | 苹果公司 | Use the audio transmission between the equipment of rarefied flow |
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| US20070218878A1 (en) * | 2006-03-16 | 2007-09-20 | Charbel Khawand | Method and system for prioritizing audio channels at a mixer level |
| CN111881090A (en) * | 2020-07-27 | 2020-11-03 | 山东女子学院 | Music piece extraction method and equipment |
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| CN104221402A (en) * | 2012-02-15 | 2014-12-17 | 三星电子株式会社 | Data transmitting apparatus, data receiving apparatus, data transreceiving system, data transmitting method, data receiving method and data transreceiving method |
| CN108989246A (en) * | 2017-06-02 | 2018-12-11 | 苹果公司 | Use the audio transmission between the equipment of rarefied flow |
| CN108738007A (en) * | 2018-06-06 | 2018-11-02 | 科大讯飞股份有限公司 | A kind of audio frequency transmission method, equipment and system |
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