CN112261140A - Audio data processing method, device, equipment and storage medium - Google Patents
Audio data processing method, device, equipment and storage medium Download PDFInfo
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- CN112261140A CN112261140A CN202011144340.3A CN202011144340A CN112261140A CN 112261140 A CN112261140 A CN 112261140A CN 202011144340 A CN202011144340 A CN 202011144340A CN 112261140 A CN112261140 A CN 112261140A
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- 238000013139 quantization Methods 0.000 claims description 10
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/06—Protocols specially adapted for file transfer, e.g. file transfer protocol [FTP]
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
- G10L21/0216—Noise filtering characterised by the method used for estimating noise
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
- G10L2021/02082—Noise filtering the noise being echo, reverberation of the speech
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Abstract
The invention discloses an audio data processing method, an audio data processing device, audio data processing equipment and a storage medium. The method comprises the steps of receiving starting instruction information from a mobile intelligent terminal according to Bluetooth; converting an analog audio signal of the audio data into a digital audio signal; carrying out coding and decoding, audio enhancement and echo cancellation processing on the digital audio signal to obtain an audio file; encrypting the audio file and storing the audio file in a preset storage area; and reading the audio file in the storage area for audio transmission. The audio data processing method can effectively encrypt and store the audio data, effectively carry out noise interference and delay processing on the audio data, and has high reliability.
Description
Technical Field
The present invention relates to the field of audio data processing technologies, and in particular, to an audio data processing method, apparatus, device, and storage medium.
Background
The audio data processing is to convert the recorded sound into digital data, and in the recording process, different recording devices almost record the sound of different sound channels at the same time, process the audio data and send the processed audio data to a loudspeaker for sound playing. However, the sound recording files in the prior art are all processed in plaintext. In addition, due to the influence of external factors such as network environment, audio data may be interfered by noise, delay, loss, echo, etc., which seriously affects the playing effect of audio files. Therefore, it is an urgent problem for those skilled in the art to provide a reliable and efficient audio data processing method.
Disclosure of Invention
In view of the above drawbacks, embodiments of the present invention provide an audio data processing method, apparatus, device, and storage medium, so as to solve the problems in the prior art.
In a first aspect, an embodiment of the present invention provides an audio data processing method, where the method includes:
receiving starting instruction information from the mobile intelligent terminal according to Bluetooth;
converting an analog audio signal of the audio data into a digital audio signal;
after the digital audio signal is subjected to coding and decoding, audio enhancement and echo cancellation, a corresponding audio file is obtained;
encrypting the audio file and storing the audio file in a preset storage area;
and reading the audio file in the storage area for audio transmission.
Preferably, before the converting the analog audio signal of the audio data into the digital audio signal, the method further comprises:
carrying out audio acquisition configuration on audio data to be acquired according to the sampling rate index, the quantization bit index and the channel number index;
and acquiring audio data according to the sampling rate index, the quantization digit index and the channel number index.
Preferably, the processing of encoding and decoding, audio enhancement and echo cancellation on the digital audio signal to obtain an audio file includes:
firstly, encoding and decoding the digital audio signal;
performing audio enhancement processing on the decoded digital audio signal;
and performing echo cancellation processing on the audio data after audio enhancement.
Preferably, the performing echo cancellation processing on the audio data after audio enhancement comprises:
treating the audio data as a multi-scale system;
and carrying out echo cancellation processing on the audio data according to a wavelet transform multi-scale analysis method.
Preferably, the encrypting the audio file and storing the audio file in a preset storage area includes:
generating WVA header data;
creating a new file in the preset storage area;
the WVA header data and the audio file are written to the new file,
and controlling the audio file to be stored in the preset storage area in an WVA file format.
Preferably, the reading the audio file in the storage area for audio transmission includes:
acquiring frame data in the audio file;
acquiring channel data contained in the frame data, and controlling the time interval between two adjacent channel data to be a preset time bit period;
and transmitting the channel data to a loudspeaker so that the loudspeaker produces sound according to the channel data.
The acquiring the frame data in the audio file comprises:
and detecting the frame header of the audio data, and acquiring data between two adjacent frame headers as the frame data.
In a second aspect, an embodiment of the present invention provides an audio data processing apparatus, where the apparatus includes:
the starting control module is used for receiving starting instruction information from the mobile intelligent terminal according to the Bluetooth;
an audio acquisition module for acquiring the audio channel according to the sampling rate index, the quantization bit index and the audio channel
Configuring the number index and acquiring audio data;
the analog-to-digital conversion module is used for converting an analog audio signal of the audio data into a digital audio signal;
an audio acquisition module for encoding and decoding the digital audio signal, enhancing audio and canceling echo
Obtaining an audio file after the removal processing;
the encryption storage module is used for carrying out encryption processing on the audio file and storing the audio file in preset storage
In the area;
and the reading transmission module is used for reading the audio file in the storage area to perform audio transmission.
In a third aspect, an embodiment of the present invention provides an audio data processing apparatus, including: at least one processor, at least one memory, and computer program instructions stored in the memory, which when executed by the processor, implement the method of the first aspect of the embodiments described above.
In a fourth aspect, embodiments of the present invention provide a storage medium having stored thereon computer program instructions, which when executed by a processor, implement the method of the first aspect in the above embodiments.
In summary, the embodiments of the present invention provide an audio data processing method, an apparatus, a device, and a storage medium. The method comprises the steps of receiving starting instruction information from a mobile intelligent terminal according to Bluetooth; converting an analog audio signal of the audio data into a digital audio signal; carrying out coding and decoding, audio enhancement and echo cancellation processing on the digital audio signal to obtain an audio file; encrypting the audio file and storing the audio file in a preset storage area; and reading the audio file in the storage area for audio transmission. The invention restores the original audio data to the maximum extent through encoding and decoding, thereby being convenient for storage and transmission; audio encryption storage is adopted, so that the audio security is guaranteed; performing echo cancellation processing on the audio data by adopting a wavelet transform multi-scale analysis method to improve the audio quality; meanwhile, the method and the device can reduce the time delay between the arrival of the channel data of different sound channels at the loudspeaker and improve the user experience. The audio data processing method can effectively encrypt and store the audio data, effectively carry out noise interference and delay processing on the audio data, and has high reliability.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart of an audio data processing method according to an embodiment of the present invention.
Fig. 2 is a flowchart of an audio file obtained by performing encoding and decoding, audio enhancement and echo cancellation on the digital audio signal according to the audio data processing method of the embodiment of the present invention;
fig. 3 is a flowchart of the audio data processing method according to the embodiment of the present invention, where the audio file is encrypted and stored in a preset storage area;
FIG. 4 is a schematic structural diagram of an apparatus for processing audio data according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an audio data processing apparatus according to an embodiment of the present invention.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.
It is 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 apparatus 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 apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Referring to fig. 1, an embodiment of the present invention provides an audio data processing method, which receives a power-on command message from a mobile intelligent terminal according to bluetooth; converting an analog audio signal of the audio data into a digital audio signal; carrying out coding and decoding, audio enhancement and echo cancellation processing on the digital audio signal to obtain an audio file; encrypting the audio file and storing the audio file in a preset storage area; and reading the audio file in the storage area for audio transmission. The audio data processing method can effectively encrypt and store the audio data, effectively carry out noise interference and delay processing on the audio data, and has high reliability.
The method comprises the following steps:
s1, receiving starting instruction information from the mobile intelligent terminal according to Bluetooth;
s2, converting the analog audio signal of the audio data into a digital audio signal;
s3, carrying out coding and decoding, audio enhancement and echo cancellation processing on the digital audio signal to obtain a corresponding audio file;
preferably, referring to fig. 2, the obtaining of the audio file after performing encoding and decoding, audio enhancement and echo cancellation on the digital audio signal includes:
s31, firstly, coding and decoding the digital audio signal;
s32, carrying out audio enhancement processing on the decoded digital audio signal;
and S33, performing echo cancellation processing on the audio data after audio enhancement.
Preferably, the performing echo cancellation processing on the audio data after audio enhancement comprises:
treating the audio data as a multi-scale system;
and carrying out echo cancellation processing on the audio data according to a wavelet transform multi-scale analysis method. It can be understood that, in this embodiment, after the wavelet transform is used to process the detail reconstruction and the approximate reconstruction of each scale of the wavelet decomposition, the wavelet is completely reconstructed again to restore the processed audio signal, so that the interference of the external noise is filtered, and the complete audio data is generated.
S4, encrypting the audio file and storing the audio file in a preset storage area;
preferably, referring to fig. 3, the encrypting the audio file and storing the audio file in a preset storage area includes:
s41, generating WVA header data;
s42, creating a new file in the preset storage area;
s43, writing the WVA file header data and the audio file into the new file,
and S44, controlling the audio file to be stored in the preset storage area in a WVA file format.
And S5, reading the audio file in the storage area for audio transmission. It is understood that the encryption algorithms employed in the present invention all conform to the national cipher administration standards including SM2, SM3, etc. The file information management system in the encryption algorithm module can operate each audio file through the authority management means, so that the system security is high. In addition, key data such as keys and digital certificates required in the encryption algorithm are stored in independent storage spaces.
Preferably, the reading the audio file in the storage area for audio transmission includes:
acquiring frame data in the audio file;
acquiring channel data contained in the frame data, and controlling the time interval between two adjacent channel data to be a preset time bit period;
and transmitting the channel data to a loudspeaker so that the loudspeaker produces sound according to the channel data.
The acquiring the frame data in the audio file comprises:
and detecting the frame header of the audio data, and acquiring data between two adjacent frame headers as the frame data. It is understood that the audio data in the audio file is stored in units of frames, that is, the audio file includes at least one frame data, and one frame data includes at least one channel data. The frame data is obtained according to a frame header in the audio data. According to the invention, the frame data in the audio data is processed, so that the time interval between the two acquired sound channel data is a preset time bit period, and the time interval for acquiring different sound channels is shortened, thus the time delay of the different sound channel data reaching the loudspeaker is shortened, the original sound is restored to a higher degree by the sound emitted by the loudspeaker, and the user experience is improved.
Preferably, before the converting the analog audio signal of the audio data into the digital audio signal, the method further comprises:
s6, carrying out audio acquisition configuration on the audio data to be acquired according to the sampling rate index, the quantization digit index and the channel number index;
and S7, acquiring audio data according to the sampling rate index, the quantization digit index and the channel number index. In the invention, the system can better collect the sound data only by using the Bluetooth to control the startup and shutdown, configuring the technical indexes such as the sampling rate index, the quantization digit index and the channel number index of the audio collection and adjusting the sound.
Referring to fig. 4, an exemplary embodiment provides an audio data processing control apparatus, including:
the starting control module 1 is used for receiving starting instruction information from the mobile intelligent terminal according to Bluetooth;
an audio acquisition module 2, configured to acquire the audio channel according to the sampling rate index, the quantization bit index, and the channel
Configuring the number index and acquiring audio data;
the analog-to-digital conversion module 3 is used for converting an analog audio signal of the audio data into a digital audio signal;
an audio acquisition module 4 for encoding and decoding the digital audio signal, enhancing the audio signal and canceling the echo
Obtaining an audio file after the removal processing;
an encryption storage module 5, configured to encrypt the audio file and store the encrypted audio file in a preset storage
In the area;
and the reading transmission module 6 is used for reading the audio file in the storage area to perform audio transmission.
In addition, the audio data processing method of the embodiment of the present invention described in conjunction with fig. 1 may be implemented by an audio data processing apparatus. Fig. 5 is a schematic diagram illustrating a hardware structure of an audio data processing device according to an embodiment of the present invention.
The audio data processing device may comprise a processor 401 and a memory 402 in which computer program instructions are stored.
Specifically, the processor 401 may include a Central Processing Unit (CPU), or an Application Specific Integrated Circuit (ASIC), or may be configured as one or more Integrated circuits implementing embodiments of the present invention.
The processor 401 realizes any one of the audio data processing methods in the above-described embodiments by reading and executing computer program instructions stored in the memory 402.
In one example, the audio data processing device may also include a communication interface 403 and a bus 410. As shown in fig. 5, the processor 401, the memory 402, and the communication interface 403 are connected via a bus 410 to complete communication therebetween.
The communication interface 403 is mainly used for implementing communication between modules, apparatuses, units and/or devices in the embodiments of the present invention.
In addition, in combination with the audio data processing method in the foregoing embodiments, the embodiments of the present invention may be implemented by providing a computer-readable storage medium. The computer readable storage medium having stored thereon computer program instructions; the computer program instructions, when executed by a processor, implement any of the audio data processing methods of the above embodiments.
In summary, the invention receives the startup instruction information from the mobile intelligent terminal according to the bluetooth; converting an analog audio signal of the audio data into a digital audio signal; carrying out coding and decoding, audio enhancement and echo cancellation processing on the digital audio signal to obtain an audio file; encrypting the audio file and storing the audio file in a preset storage area; and reading the audio file in the storage area for audio transmission. The invention restores the original audio data to the maximum extent through encoding and decoding, thereby being convenient for storage and transmission; audio encryption storage is adopted, so that the audio security is guaranteed; performing echo cancellation processing on the audio data by adopting a wavelet transform multi-scale analysis method to improve the audio quality; meanwhile, the method and the device can reduce the time delay between the arrival of the channel data of different sound channels at the loudspeaker and improve the user experience. The audio data processing method can effectively encrypt and store the audio data, effectively carry out noise interference and delay processing on the audio data, and has high reliability.
It should also be noted that the exemplary embodiments mentioned in this patent describe some methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, may be performed in an order different from the order in the embodiments, or may be performed simultaneously.
As described above, only the specific embodiments of the present invention are provided, and it can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the system, the module and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again. It should be understood that the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present invention, and these modifications or substitutions should be covered within the scope of the present invention.
Claims (10)
1. An audio data processing method applied to Bluetooth control is characterized by comprising the following steps:
receiving starting instruction information from the mobile intelligent terminal according to Bluetooth;
converting an analog audio signal of the audio data into a digital audio signal;
after the digital audio signal is subjected to coding and decoding, audio enhancement and echo cancellation, a corresponding audio file is obtained;
encrypting the audio file and storing the audio file in a preset storage area;
and reading the audio file in the storage area for audio transmission.
2. The audio data processing method of claim 1, further comprising, before the converting the analog audio signal of the audio data into a digital audio signal:
carrying out audio acquisition configuration on audio data to be acquired according to the sampling rate index, the quantization bit index and the channel number index;
and acquiring audio data according to the sampling rate index, the quantization digit index and the channel number index.
3. The audio data processing method of claim 1, wherein the obtaining an audio file after performing the codec, audio enhancement and echo cancellation processing on the digital audio signal comprises:
firstly, encoding and decoding the digital audio signal;
performing audio enhancement processing on the decoded digital audio signal;
and performing echo cancellation processing on the audio data after audio enhancement.
4. The audio data processing method of claim 3, wherein the performing echo cancellation processing on the audio data after audio enhancement comprises:
treating the audio data as a multi-scale system;
and carrying out echo cancellation processing on the audio data according to a wavelet transform multi-scale analysis method.
5. The audio data processing method according to claim 1, wherein the encrypting the audio file and storing the audio file in a preset storage area comprises:
generating WVA header data;
creating a new file in the preset storage area;
the WVA header data and the audio file are written to the new file,
and controlling the audio file to be stored in the preset storage area in an WVA file format.
6. The audio data processing method of claim 1, wherein the reading the audio file in the storage area for audio transmission comprises:
acquiring frame data in the audio file;
acquiring channel data contained in the frame data, and controlling the time interval between two adjacent channel data to be a preset time bit period;
and transmitting the channel data to a loudspeaker so that the loudspeaker produces sound according to the channel data.
7. The audio data processing method of claim 6, wherein the obtaining the frame data in the audio file comprises:
and detecting the frame header of the audio data, and acquiring data between two adjacent frame headers as the frame data.
8. An audio data processing apparatus, characterized in that the apparatus comprises:
the starting control module is used for receiving starting instruction information from the mobile intelligent terminal according to the Bluetooth;
the audio acquisition module is used for carrying out configuration and audio data acquisition according to the sampling rate index, the quantization digit index and the channel number index;
the analog-to-digital conversion module is used for converting an analog audio signal of the audio data into a digital audio signal;
the audio acquisition module is used for carrying out coding and decoding, audio enhancement and echo cancellation processing on the digital audio signal to obtain an audio file;
the encryption storage module is used for encrypting the audio file and storing the audio file in a preset storage area;
and the reading transmission module is used for reading the audio file in the storage area to perform audio transmission.
9. An audio data processing apparatus, characterized by comprising: at least one processor, at least one memory, and computer program instructions stored in the memory that, when executed by the processor, implement the method of any of claims 1-7.
10. A storage medium having computer program instructions stored thereon, which when executed by a processor implement the method of any one of claims 1-7.
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| CN202011144340.3A CN112261140A (en) | 2020-10-23 | 2020-10-23 | Audio data processing method, device, equipment and storage medium |
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