CN110970043A - Audio signal receiving and storing method - Google Patents
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Abstract
The invention discloses an audio signal receiving and storing method, which solves the problems that the received audio signal is not clear and the audio signal is required to be transcoded according to the user requirement in the later period of calling. The device comprises a receiving module, a digital conversion module, a parameter setting module, a central control module, a channel monitoring module, an audio bandwidth selection module, an audio processor, an audio decoding module, an audio transcoding module, a noise detection module, an audio dividing module, an extraction module and a storage module, wherein the receiving module is connected with the digital conversion module, and the digital conversion module is connected with the parameter setting module.
Description
Technical Field
The invention relates to the technical field of audio processing, in particular to an audio signal receiving and storing method.
Background
Audio generation may involve the use of many components for capturing and recording the sound of an article, a microphone typically captures the sound of an article transmitted wirelessly from a microphone and a wireless audio transmitter to a wireless audio receiver, which may be connected to a recorder and mixer for recording and mixing of sounds by panelists, electronics such as computers and smart phones may be connected to the recorder and mixer to allow the panelists to monitor audio levels and time codes.
At present in audio frequency receiving and storage process, do not carry out the preliminary treatment to the audio frequency, make the audio signal received not clear enough, in the storage process of audio signal moreover, do not carry out format conversion, code conversion to in the later stage is transferred the use, the audio signal that needs to transfer carries out format conversion, and it is very inconvenient to use, consequently need improve prior art.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an audio signal receiving and storing method, which solves the problems that the received audio signal is not clear and the audio signal is required to be transcoded according to the user requirement in the later calling process, so that the received audio signal is clearer and the audio signal is more convenient to call.
In order to achieve the purpose, the invention is realized by the following technical scheme: an audio signal receiving and storing system comprises a receiving module, a digital conversion module, a parameter setting module, a central control module, a channel monitoring module, an audio bandwidth selection module, an audio processor, an audio decoding module, an audio transcoding module, a noise detection module, an audio dividing module, an extraction module and a storage module, the receiving module is connected with the digital conversion module, the digital conversion module is connected with the parameter setting module, the digital conversion module is connected with the central control module, the central control module is connected with the channel monitoring module, the central control module is connected with the audio bandwidth selection module, the audio bandwidth selection module is connected with the audio processor, the audio processor is connected with the audio decoding module, the audio decoding module is connected with the audio transcoding module, and the audio transcoding module is connected with the noise detection module. The noise detection module is connected with the audio processor, the noise detection module is connected with the audio dividing module, the audio dividing module is connected with the extracting module, and the extracting module is connected with the storage module.
Preferably, the digital conversion module comprises a weight network module, an analog switch module, a parameter calculation module, an operational amplifier and a digital register module, wherein the weight network module is connected with the digital register module, the analog switch module is connected with the digital register module, the parameter calculation module is connected with the operational amplifier, the parameter calculation module is connected with the digital register module, and the operational amplifier is connected with the digital register module.
Preferably, the audio bandwidth selection module includes a threshold setting module and a bandwidth parameter comparison module, and the threshold setting module is connected to the bandwidth parameter comparison module.
Preferably, the audio processor module comprises an input module, a discontinuity estimator, a discontinuity modifier, an auxiliary information decoder and an output module, wherein the input module is connected with the discontinuity estimator, the discontinuity estimator is connected with the discontinuity modifier, the discontinuity modifier is connected with the auxiliary information decoder, and the auxiliary information decoder is connected with the output module.
Preferably, the input module includes a gain control module, an equalization adjustment module, a delay adjustment module, and a polarity conversion module.
Preferably, the output module includes a routing module, a high pass filter, a low pass filter and an equalizer.
A method for receiving and storing audio signals comprises the following specific steps:
the method comprises the following steps: when the audio signal needs to be received and stored, the audio signal is received through the receiving module, the receiving module receives the audio information and transmits the information to the digital conversion module, and the digital conversion module transmits the audio information to the parameter setting module after receiving the information.
Step two: the parameter setting module sets corresponding parameters according to the audio signals, the parameters are fed back to the digital conversion module after the setting is finished, the bit right network module enables the audio information to generate a current value in proportion to the bit right on a bit right network, the numerical information is transmitted to the digital register module to be temporarily stored, the analog switch module controls the on-off of a circuit and transmits a control result to the digital register module to be temporarily stored, the parameter calculation module calculates according to the parameters transmitted by the parameter setting module and transmits the calculation result to the digital register module to be temporarily stored, the operational amplifier amplifies weak signals and transmits the amplified signals to the digital register module to be temporarily stored, the digital conversion module transmits the signals to the central control module after the signal conversion is finished, and corresponding instructions are generated according to the audio signals.
Step three: the central control module transmits an instruction to the channel monitoring module to monitor a channel, the central control module transmits the instruction to the audio bandwidth selection module, the audio bandwidth selection module adjusts audio bandwidth parameters according to the instruction, after the audio bandwidth selection module receives the instruction, the valve threshold setting module sets at least one audio bandwidth switching valve threshold based on the instruction of the audio signal characteristics, after the setting is completed, the instruction is transmitted to the bandwidth parameter comparison module, and the bandwidth parameter comparison module sets the audio bandwidth parameters by comparing the target data rate with the audio bandwidth switching valve threshold.
Step four: the central control module transmits the instruction to the audio processor to correct the audio.
Step five: after the audio processor receives the instruction, the gain control module in the input module controls the input level of the processor, the equalization adjusting module performs equalization adjustment on the parameter, the delay adjusting module delays the input signal of the processor to perform integral delay adjustment, the polarity converting module converts the polarity phase of the processor between positive and negative, and the input module transmits the instruction to the discontinuity estimator after adjustment is completed.
Step six: the discontinuous estimator estimates discontinuity generated in a first normally received audio packet after packet loss is generated after receiving the instruction, transmits the instruction to the discontinuous corrector after estimation is completed, the discontinuous corrector corrects the discontinuity of the audio signal, transmits the signal to the auxiliary information decoder after correction is completed, and the auxiliary information decoder decodes auxiliary information related to the discontinuity generated in the first normally received audio packet after packet loss is generated and transmits the instruction to the output module.
Step seven: after the output module receives the instruction, the routing module enables the output channel to selectively receive the signal from the input channel, the high-pass filter adjusts the lower frequency limit of the output signal, the low-pass filter adjusts the upper frequency limit of the output signal, the equalizer performs equalization adjustment on the parameter, and the output module transmits the processed signal to the audio decoding module.
Step eight: and after the audio decoding module receives the audio signal, the signal is decoded, after the decoding is finished, the audio signal is transmitted to the audio transcoding module, the audio transcoding module converts the audio into a required format, after the conversion is finished, the converted audio signal is transmitted to the noise detection module, the noise condition after the conversion is detected, and after the detection is finished, if the converted audio signal is not matched with the noise condition, the information is fed back to the audio processor to continue the operation in the sixth step.
Step nine: after the noise detection module detects, if accord with, transmit to the audio frequency and divide the module, divide into different units according to the demand, divide after accomplishing, extract the module and extract audio signal to transmit information to the storage module and store.
Advantageous effects
The invention provides an audio signal receiving and storing method, which has the following beneficial effects: this audio signal receives storage method, through setting up digital conversion module, audio processor, audio decoding module and audio transcoding module, handles audio signal, can make the audio signal who accepts more clear after handling, can convert the different formats to and store, makes things convenient for the later stage to use, connects through setting up noise detection module and audio processor, makes the audio signal after the transcoding process many times after, and audio signal is more clear.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a schematic diagram of an input module of the present invention;
fig. 3 is a schematic diagram of an output module of the present invention.
In the figure: 1. a receiving module; 2. a digital conversion module; 3. a parameter setting module; 4. a central control module; 5. a channel monitoring module; 6. an audio bandwidth selection module; 7. an audio processor; 8. an audio decoding module; 9. an audio transcoding module; 10. a noise detection module; 11. an audio dividing module; 12. an extraction module; 13. a storage module; 21. a bit right network module; 22. an analog switch module; 23. a parameter calculation module; 24. an operational amplifier; 25. a digital register module; 61. a valve threshold setting module; 62. a bandwidth parameter comparison module; 71. an input module; 72. a discontinuity estimator; 73. a discontinuity corrector; 74. a side information decoder; 75. an output module; 711. a gain control module; 712. a balance adjustment module; 713. a delay adjustment module; 714. a polarity conversion module; 751. a routing module; 752. a high-pass filter; 753. a low-pass filter; 754. and an equalizer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: an audio signal receiving and storing system comprises a receiving module 1, a digital conversion module 2, a parameter setting module 3, a central control module 4, a channel monitoring module 5, an audio bandwidth selection module 6, an audio processor 7, an audio decoding module 8, an audio transcoding module 9, a noise detection module 10, an audio dividing module 11, an extraction module 12 and a storage module 13, wherein the receiving module 1 is connected with the digital conversion module 2 for data conversion, the digital conversion module 2 is connected with the parameter setting module 3 for setting corresponding parameters according to audio signals, the digital conversion module 2 is connected with the central control module 4 for generating corresponding instructions according to the audio signals, the central control module 4 is connected with the channel monitoring module 5 for monitoring channels, the central control module 4 is connected with the audio bandwidth selection module 6 for adjusting audio bandwidth parameters according to the instructions, audio bandwidth selection module 6 and audio processor 7 are connected, handle the audio frequency, audio processor 7 and audio decoding module 8 are connected, decode the audio frequency, audio decoding module 8 and audio transcoding module 9 are connected, transcode the audio frequency, audio transcoding module 9 and noise detection module 10 are connected, carry out noise detection to the audio frequency after the transcoding, noise detection module 10 and audio processor 7 are connected, noise detection module 10 and audio dividing module 11 are connected, divide according to the audio format, audio dividing module 11 and extraction module 12 are connected, be used for extracting the signal, extraction module 12 and storage module 13 are connected, store audio signal.
The digital conversion module 2 comprises a bit-right network module 21, an analog switch module 22, a parameter calculation module 23, an operational amplifier 24 and a digital register module 25, the bit-right network module 21 is connected with the digital register module 25 and used for registering data, the analog switch module 22 is connected with the digital register module 25, the parameter calculation module 23 is connected with the operational amplifier 24, the parameter calculation module 23 is connected with the digital register module 25, the operational amplifier 24 is connected with the digital register module 25, the audio bandwidth selection module 6 comprises a valve threshold value setting module 61 and a bandwidth parameter comparison module 62, the valve threshold value setting module 61 is connected with the bandwidth parameter comparison module 62, a target data rate is compared with an audio bandwidth switching valve threshold value to set an audio bandwidth parameter, the audio processor module 7 comprises an input module 71, a discontinuity estimator 72, a discontinuity corrector 73, an auxiliary information decoder 74 and an output module 75, the input module 71 is connected to a discontinuity estimator 72 for estimating discontinuity occurring in a first normally received audio packet after a packet loss occurs, the discontinuity estimator 72 is connected to a discontinuity modifier 73 for modifying discontinuity of an audio signal, the discontinuity modifier 73 is connected to an auxiliary information decoder 74 for decoding auxiliary information associated with discontinuity occurring in the first normally received audio packet after the packet loss occurs, the auxiliary information decoder 74 is connected to the output module 75, the input module 71 includes a gain control module 711, an equalization adjustment module 712, a delay adjustment module 713, and a polarity conversion module 714, and the output module 75 includes a routing module 751, a high pass filter 752, a low pass filter 753, and an equalizer 754.
A method for receiving and storing audio signals comprises the following specific steps:
the method comprises the following steps: when the audio signal needs to be received and stored, the receiving module 1 receives the audio signal, the receiving module 1 receives the audio information and transmits the information to the digital conversion module 2, and the digital conversion module 2 transmits the audio information to the parameter setting module 3 after receiving the information.
Step two: the parameter setting module 3 sets corresponding parameters according to the audio signals, the parameters are fed back to the digital conversion module 2 after the setting is finished, the bit right network module 21 enables the audio information to generate a current value in proportion to the bit right on a bit right network, the numerical information is transmitted to the digital register module 25 to be temporarily stored, the analog switch module 22 controls the on-off of a circuit and transmits a control result to the digital register module 25 to be temporarily stored, the parameter calculation module 23 calculates according to the parameters transmitted by the parameter setting module 3 and transmits the calculation result to the digital register module 25 to be temporarily stored, the operational amplifier 24 amplifies weak signals and transmits the signals to the digital register module 25 after amplification, the digital conversion module 2 temporarily stores the signals after the signal conversion is finished, the signals are transmitted to the central control module 4, and corresponding instructions are generated according to the audio signals.
Step three: the central control module 4 transmits instructions to the channel monitoring module 5 to monitor the channel, the central control module 4 transmits instructions to the audio bandwidth selection module 6, the audio bandwidth selection module 6 adjusts audio bandwidth parameters according to the instructions, after the audio bandwidth selection module 6 receives the instructions, the valve threshold setting module 61 sets at least one audio bandwidth switching valve threshold based on the indication of the audio signal characteristics, after the setting is completed, the instructions are transmitted to the bandwidth parameter comparison module 62, and the bandwidth parameter comparison module 62 sets the audio bandwidth parameters by comparing the target data rate with the audio bandwidth switching valve threshold.
Step four: the central control module 4 transmits the instruction to the audio processor 7 to perform the modification processing on the audio.
Step five: after the audio processor 7 receives the instruction, the gain control module 711 in the input module 71 controls the input level of the processor, the equalization adjustment module 712 performs equalization adjustment on the parameter, the delay adjustment module 713 delays the input signal of the processor to perform integral delay adjustment, the polarity conversion module 714 converts the polarity phase of the processor between positive and negative, and after the adjustment of the input module 71 is completed, the instruction is transmitted to the discontinuity estimator 72.
Step six: the discontinuity estimator 72 estimates discontinuity generated in the first normally received audio packet after the packet loss is generated after receiving the instruction, transmits the instruction to the discontinuity modifier 73 after the estimation is completed, the discontinuity modifier 73 modifies discontinuity of the audio signal, transmits the signal to the side information decoder 74 after the modification is completed, and the side information decoder 74 decodes side information related to discontinuity generated in the first normally received audio packet after the packet loss is generated and transmits the instruction to the output module 75.
Step seven: after the output module 75 receives the instruction, the routing module 751 enables the output channel to select and receive the signal from the input channel, the high-pass filter 752 adjusts the lower frequency limit of the output signal, the low-pass filter 753 adjusts the upper frequency limit of the output signal, the equalizer 754 performs equalization adjustment on the parameters, and the output module 75 transmits the processed signal to the audio decoding module 8.
Step eight: after the audio decoding module 8 receives the audio signal, the audio signal is decoded, after the decoding is completed, the audio signal is transmitted to the audio transcoding module 9, the audio transcoding module 9 converts the audio into a required format, after the conversion is completed, the converted audio signal is transmitted to the noise detection module 10, the noise condition after the conversion is detected, and after the detection is completed, if the information is not met, the information is fed back to the audio processor 7 to continue the operation in the sixth step.
Step nine: after the noise detection module 10 detects the audio signal, if the detected audio signal meets the requirements, the detected audio signal is transmitted to the audio dividing module 11, the audio signal is divided into different units according to the requirements, and after the division is completed, the extracting module 12 extracts the audio signal and transmits the information to the storage module 13 for storage.
The invention has the beneficial effects that: this audio signal receives storage method, through setting up digital conversion module 2, audio processor 7, audio decoding module 8 and audio transcoding module 9, handle audio signal, can make the audio signal who accepts more clear after handling, can convert the different formats to and store, make things convenient for the later stage to use, connect through setting up noise detection module 10 and audio processor 7, make the audio signal after the transcoding process many times after, audio signal is more clear.
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.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. An audio signal receiving and storing system comprises a receiving module (1), a digital conversion module (2), a parameter setting module (3), a central control module (4), a channel monitoring module (5), an audio bandwidth selection module (6), an audio processor (7), an audio decoding module (8), an audio transcoding module (9), a noise detection module (10), an audio dividing module (11), an extraction module (12) and a storage module (13), and is characterized in that: the receiving module (1) is connected with the digital conversion module (2), the digital conversion module (2) is connected with the parameter setting module (3), the digital conversion module (2) is connected with the central control module (4), the central control module (4) is connected with the channel monitoring module (5), the central control module (4) is connected with the audio bandwidth selection module (6), the audio bandwidth selection module (6) is connected with the audio processor (7), the audio processor (7) is connected with the audio decoding module (8), the audio decoding module (8) is connected with the audio transcoding module (9), and the audio transcoding module (9) is connected with the noise detection module (10),
noise detection module (10) and audio processor (7) are connected, noise detection module (10) and audio frequency partition module (11) are connected, audio frequency partition module (11) and extraction module (12) are connected, extraction module (12) and storage module (13) are connected.
2. An audio signal receiving and storing system according to claim 1, wherein: the digital conversion module (2) comprises a bit right network module (21), an analog switch module (22), a parameter calculation module (23), an operational amplifier (24) and a digital register module (25), the bit right network module (21) is connected with the digital register module (25), the analog switch module (22) is connected with the digital register module (25), the parameter calculation module (23) is connected with the operational amplifier (24), the parameter calculation module (23) is connected with the digital register module (25), and the operational amplifier (24) is connected with the digital register module (25).
3. An audio signal receiving and storing system according to claim 1, wherein: the audio bandwidth selection module (6) comprises a threshold setting module (61) and a bandwidth parameter comparison module (62), and the threshold setting module (61) is connected with the bandwidth parameter comparison module (62).
4. An audio signal receiving and storing system according to claim 1, wherein: the audio processor module (7) comprises an input module (71), a discontinuity estimator (72), a discontinuity modifier (73), an auxiliary information decoder (74) and an output module (75), wherein the input module (71) is connected with the discontinuity estimator (72), the discontinuity estimator (72) is connected with the discontinuity modifier (73), the discontinuity modifier (73) is connected with the auxiliary information decoder (74), and the auxiliary information decoder (74) is connected with the output module (75).
5. An audio signal receiving and storing system according to claim 1, wherein: the input module (71) comprises a gain control module (711), an equalization adjusting module (712), a delay adjusting module (713) and a polarity conversion module (714).
6. An audio signal receiving and storing system according to claim 1, wherein: the output module (75) includes a routing module (751), a high pass filter (752), a low pass filter (753), and an equalizer (754).
7. An audio signal receiving and storing method, characterized by: the method comprises the following specific steps:
the method comprises the following steps: when the audio signal needs to be received and stored, the audio signal is received through the receiving module (1), the receiving module (1) receives the audio information and transmits the information to the digital conversion module (2), and after the digital conversion module (2) receives the information, the audio information is transmitted to the parameter setting module (3);
step two: the parameter setting module (3) sets corresponding parameters according to the audio signals, after the setting is finished, the parameters are fed back to the digital conversion module (2), the bit right network module (21) enables the audio information to generate a current value which is in direct proportion to the bit right of the audio information on a bit right network, the numerical information is transmitted to the digital register module (25) to be temporarily stored, the analog switch module (22) controls the on-off of a circuit and transmits a control result to the digital register module (25) to be temporarily stored, the parameter calculation module (23) calculates according to the parameters transmitted by the parameter setting module (3) and transmits the calculation result to the digital register module (25), the operational amplifier (24) amplifies weak signals, after the amplification, the signals are transmitted to the digital register module (25) to be temporarily stored, after the signal conversion is finished, the digital conversion module (2) transmits the signals to the central control module (4), generating a corresponding instruction according to the audio signal;
step three: the central control module (4) transmits instructions to the channel monitoring module (5) to monitor the channel, the central control module (4) transmits instructions to the audio bandwidth selection module (6), the audio bandwidth selection module (6) adjusts audio bandwidth parameters according to the instructions, after the audio bandwidth selection module (6) receives the instructions, the valve threshold setting module (61) sets at least one audio bandwidth switching valve threshold based on the indication of the audio signal characteristics, after the setting is completed, the instructions are transmitted to the bandwidth parameter comparison module (62), and the bandwidth parameter comparison module (62) sets the audio bandwidth parameters by comparing the target data rate with the audio bandwidth switching valve threshold;
step four: the central control module (4) transmits the instruction to the audio processor (7) to correct the audio;
step five: after the audio processor (7) receives the instruction, a gain control module (711) in an input module (71) controls the input level of the processor, an equalization adjustment module (712) performs equalization adjustment on parameters, a delay adjustment module (713) delays an input signal of the processor to perform integral delay adjustment, a polarity conversion module (714) converts the polarity phase of the processor between positive and negative, and after the adjustment of the input module (71) is completed, the instruction is transmitted to a discontinuous estimator (72);
step six: after receiving the instruction, the discontinuity estimator (72) estimates discontinuity generated in the first normally received audio packet after the packet loss is generated, after the estimation is completed, the instruction is transmitted to the discontinuity corrector (73), the discontinuity corrector (73) corrects the discontinuity of the audio signal, after the correction is completed, the signal is transmitted to the auxiliary information decoder (74), the auxiliary information decoder (74) decodes the auxiliary information related to the discontinuity generated in the first normally received audio packet after the packet loss is generated, and transmits the instruction to the output module (75);
step seven: after the output module (75) receives the instruction, the routing module (751) enables the output channel to select and receive the signal from the input channel, the high-pass filter (752) adjusts the lower frequency limit of the output signal, the low-pass filter (753) adjusts the upper frequency limit of the output signal, the equalizer (754) performs equalization adjustment on the parameter, and the output module (75) transmits the processed signal to the audio decoding module (8);
step eight: after receiving the audio signal, the audio decoding module (8) decodes the signal, after the decoding is finished, the audio signal is transmitted to the audio transcoding module (9), the audio transcoding module (9) converts the audio into a required format, after the conversion is finished, the converted audio signal is transmitted to the noise detection module (10), the noise condition after the conversion is detected, and after the detection is finished, if the converted audio signal is not in accordance with the required format, the information is fed back to the audio processor (7) to continue to perform the operation of the sixth step;
step nine: after the noise detection module (10) detects, if accord with, transmit to audio frequency and divide module (11), divide into different units according to the demand, divide and accomplish the back, extract module (12) and extract audio signal to transmit information to storage module (13) and store.
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