CN108806705A - Audio-frequency processing method and processing system - Google Patents
Audio-frequency processing method and processing system Download PDFInfo
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- CN108806705A CN108806705A CN201810631504.1A CN201810631504A CN108806705A CN 108806705 A CN108806705 A CN 108806705A CN 201810631504 A CN201810631504 A CN 201810631504A CN 108806705 A CN108806705 A CN 108806705A
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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
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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
- G10L19/04—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 using predictive techniques
- G10L19/16—Vocoder architecture
Abstract
The invention discloses a kind of audio-frequency processing method and processing systems, and this approach includes the following steps：S1, input audio signal；S2, the audio signal of input is decoded；S3, decoded audio is pre-processed and is converted to audio word content；S4, processing is modulated to pretreated audio；S5, output modulation treatment after audio and carry out audio and word content storage.The invention also discloses a kind of audio frequency processing systems, including input module, decoder module, preprocessing module, modulation module, memory module, output module and main control MCU.The audio-frequency processing method and system of the present invention, handles decoded audio, more precisely and clear to the handling result of audio, and will treated that audio carries out word content and audio-frequency information stores, be more convenient to use.
Description
Technical field
The present invention relates to audio signal processing technique field, specifically a kind of audio-frequency processing method and processing system.
Background technology
Whether audio-visual-materials or individual audio material, can show beautiful audio frequency effect with for user with
Preferably experience, and audio signal processing technique is then the basis of various audio file processing.
Traditional audio signal processing technique mostly use greatly signal specific interface realize to the pretreatment of audio signal decode with
Audio processing equipment is enable to be compatible with the audio-frequency information of input, structure is complex, needs to configure a variety of audio inputs and connects
Mouthful.
Invention content
The purpose of the present invention is to provide a kind of audio-frequency processing method and processing systems, to solve to carry in above-mentioned background technology
The conventional audio treatment technology gone out needs to configure the problem that a variety of audio interface cause hardware cost high with compatible audio information.
To achieve the above object, the present invention provides the following technical solutions：
A kind of audio-frequency processing method, this approach includes the following steps：
S1, input audio signal；
S2, the audio signal of input is decoded；
S3, decoded audio is pre-processed and is converted to audio word content；
S4, processing is modulated to pretreated audio；
S5, output modulation treatment after audio and carry out audio and word content storage.
Preferably, the S2 is decoded including according to the selection pair of the input mode of input signal the audio signal of input
Audio signal is decoded by decoder after the input interface answered.
Preferably, the pretreatment that the S3 carries out audio includes noise reduction process and analog-to-digital conversion more accurately to adjust
System handles and more easily converts word content.
Preferably, it includes stereo process, volume gain, tone changing and rhythm tune that the S4 is modulated processing to audio
It is one or more in whole.
The invention also discloses a kind of audio frequency processing systems, including：
Input module, for inputting audio-frequency information；
Decoder module, for being decoded to audio-frequency information；
Preprocessing module, for being pre-processed to audio-frequency information；
Modulation module, for being modulated processing to audio-frequency information；
Memory module, for storing related data information；
Output module, for exporting treated audio-frequency information；And
Main control MCU；
Wherein, the input module is electrically connected decoder module, and the decoder module is electrically connected main control MCU, pretreatment
Module is electrically connected decoder module, main control MCU and memory module, modulation module be electrically connected preprocessing module, memory module and
Main control MCU, output module are electrically connected main control MCU.
Preferably, the preprocessing module includes noise reduction unit, AD conversion unit and text conversion unit, noise reduction unit
It is electrically connected decoder module to be used to carry out noise reduction process to decoded audio-frequency information, AD conversion unit is electrically connected noise reduction list
Member and main control MCU are used to the audio-frequency information after noise reduction being converted to digital signal, text conversion unit be electrically connected noise reduction unit,
Memory module and main control MCU are used to the audio-frequency information after noise reduction carrying out text conversion and audio information by voice recognition
Word content.
Preferably, the modulation module includes stereo process unit, volume gain unit, tone changing unit, rhythm tune
Whole unit and D/A conversion unit, stereo process unit, volume gain unit, tone changing unit and rhythm adjustment unit difference
AD conversion unit, D/A conversion unit and main control MCU is electrically connected to be used to carry out stereo process, sound to the digital signal of conversion
Flow gain, tone changing and rhythm adjust and are converted to audio analog signals, and D/A conversion unit is electrically connected main control MCU and deposits
Storage module is for storing modulated audio-frequency information.
Preferably, the audio frequency processing system further includes control module, and the control module is for connecting control device to control
Modulation module processed is modulated processing to audio comprising is wirelessly connected unit and signal transmitter unit, signal transmitter unit electricity
Property connection be wirelessly connected, be wirelessly connected unit and main control MCU and be wirelessly connected.
Preferably, the output module is loud speaker, and the input module is audio input channel.
Compared with prior art, the beneficial effects of the invention are as follows：
1) present invention pre-processes after being decoded to the audio-frequency information of input by configuring decoder module, then to locating in advance
Audio after reason is further processed, and realizes and is attached to the initialization process of audio-frequency information with reducing audio-frequency information itself
The influence to handling result that brings of the factors such as noise, and the compatibility to various audio-frequency informations is realized by decoder module,
The configuration of audio input interface is reduced, hardware cost is reduced；
2) audio analog signals are that digital signal is modulated processing again by AD conversion unit by the present invention, improve body
Matter processing efficiency, retell the digital signal after modulation treatment be converted to analog audio signal carry out export and combine pretreatment life
At word content stored, realize storage side humanized in the improved efficiency and audio frequency process of audio frequency process
Formula improves user experience.
Description of the drawings
Fig. 1 is the flow chart of audio-frequency processing method of the present invention；
Fig. 2 is the flow diagram of audio frequency processing system of the present invention；
Fig. 3 is the structure diagram of audio frequency processing system of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Please refer to Fig.1-3
As shown in Figure 1, a kind of audio-frequency processing method, this approach includes the following steps：
S1, input audio signal；
S2, the audio signal of input is decoded；The audio signal of input is decoded including according to input signal
Input mode choose corresponding input interface after audio signal is decoded by decoder.
S3, decoded audio is pre-processed and is converted to audio word content；The pretreatment packet that audio is carried out
Noise reduction process and analog-to-digital conversion are included to be more accurately modulated processing and more easily convert word content.
S4, processing is modulated to pretreated audio；It includes stereo process, volume increasing to be modulated processing to audio
It is one or more in benefit, tone changing and rhythm adjustment.
S5, output modulation treatment after audio and carry out audio and word content storage.
As shown in Fig. 2, the invention also discloses a kind of audio frequency processing systems, including：
Input module, for inputting audio-frequency information；
Decoder module, for being decoded to audio-frequency information；
Preprocessing module, for being pre-processed to audio-frequency information；
Modulation module, for being modulated processing to audio-frequency information；
Memory module, for storing related data information；
Output module, for exporting treated audio-frequency information；And
Main control MCU；
Wherein, the input module is electrically connected decoder module, and the decoder module is electrically connected main control MCU, pretreatment
Module is electrically connected decoder module, main control MCU and memory module, modulation module be electrically connected preprocessing module, memory module and
Main control MCU, output module are electrically connected main control MCU.
As shown in figure 3, preprocessing module includes noise reduction unit, AD conversion unit and text conversion unit, noise reduction unit
It is electrically connected decoder module to be used to carry out noise reduction process to decoded audio-frequency information, AD conversion unit is electrically connected noise reduction list
Member and main control MCU are used to the audio-frequency information after noise reduction being converted to digital signal, text conversion unit be electrically connected noise reduction unit,
Memory module and main control MCU are used to the audio-frequency information after noise reduction carrying out text conversion and audio information by voice recognition
Word content.
Modulation module includes stereo process unit, volume gain unit, tone changing unit, rhythm adjustment unit and digital-to-analogue
Modulus is electrically connected in converting unit, stereo process unit, volume gain unit, tone changing unit and rhythm adjustment unit
Converting unit, D/A conversion unit and main control MCU are used to carry out stereo process, volume gain, tone to the digital signal of conversion
Transformation and rhythm adjust and are converted to audio analog signals, and D/A conversion unit is electrically connected main control MCU and memory module is used for
Store modulated audio-frequency information.
Audio frequency processing system further includes control module, and the control module is for connecting control device to control modulation module pair
Audio is modulated processing comprising is wirelessly connected unit and signal transmitter unit, signal transmitter unit electric connection wirelessly connects
It connects, is wirelessly connected unit and is wirelessly connected with main control MCU.
Output module is loud speaker, and the input module is audio input channel.
The present invention pre-processes after being decoded to the audio-frequency information of input by decoder module, then to pretreated
Audio is further processed, and realizes the initialization process to audio-frequency information to reduce the incidental noise of audio-frequency information itself
Etc. the influence to handling result that brings of factors, the compatibility to various audio-frequency informations is realized by decoder module, reduces audio
The configuration of input interface reduces hardware cost.Audio analog signals are adjusted again for digital signal by AD conversion unit
System processing, improves the efficiency of constitution processing, retells the digital signal after modulation treatment and is converted to analog audio signal and is exported
It is stored with the word content for combining pretreatment to generate, it is more people to realize in the improved efficiency and audio frequency process of audio frequency process
Property storage mode, improve user experience.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (9)
1. a kind of audio-frequency processing method, which is characterized in that this approach includes the following steps：
S1, input audio signal；
S2, the audio signal of input is decoded；
S3, decoded audio is pre-processed and is converted to audio word content；
S4, processing is modulated to pretreated audio；
S5, output modulation treatment after audio and carry out audio and word content storage.
2. a kind of audio-frequency processing method according to claim 1, which is characterized in that the S2 to the audio signal of input into
Row decoding includes being carried out to audio signal by decoder according to after the corresponding input interface of the input mode of input signal selection
Decoding.
3. a kind of audio-frequency processing method according to claim 1, which is characterized in that the pretreatment that the S3 carries out audio
Word content is converted to be more accurately modulated processing and more easily including noise reduction process and analog-to-digital conversion.
4. a kind of audio-frequency processing method according to claim 1, which is characterized in that the S4 is modulated processing to audio
It is one or more in being adjusted including stereo process, volume gain, tone changing and rhythm.
5. a kind of audio frequency processing system, which is characterized in that including：
Input module, for inputting audio-frequency information；
Decoder module, for being decoded to audio-frequency information；
Preprocessing module, for being pre-processed to audio-frequency information；
Modulation module, for being modulated processing to audio-frequency information；
Memory module, for storing related data information；
Output module, for exporting treated audio-frequency information；And
Main control MCU；
Wherein, the input module is electrically connected decoder module, and the decoder module is electrically connected main control MCU, preprocessing module
It is electrically connected decoder module, main control MCU and memory module, modulation module is electrically connected preprocessing module, memory module and master control
MCU, output module are electrically connected main control MCU.
6. a kind of audio frequency processing system according to claim 5, which is characterized in that the preprocessing module includes noise reduction list
Member, AD conversion unit and text conversion unit, noise reduction unit are electrically connected decoder module and are used for decoded audio-frequency information
Noise reduction process is carried out, AD conversion unit is electrically connected noise reduction unit and main control MCU is used to convert the audio-frequency information after noise reduction
For digital signal, text conversion unit is electrically connected noise reduction unit, memory module and main control MCU and is used to believe the audio after noise reduction
Breath carries out the word content of text conversion and audio information by voice recognition.
7. a kind of audio frequency processing system according to claim 5, which is characterized in that the modulation module includes stereo process
Unit, volume gain unit, tone changing unit, rhythm adjustment unit and D/A conversion unit, stereo process unit, volume increase
AD conversion unit, D/A conversion unit and master control is electrically connected in beneficial unit, tone changing unit and rhythm adjustment unit
MCU is used for digital signal progress stereo process, volume gain, tone changing and rhythm to conversion and adjusts and be converted to audio mould
Quasi- signal, D/A conversion unit are electrically connected main control MCU and memory module for storing modulated audio-frequency information.
8. a kind of audio frequency processing system according to claim 5, which is characterized in that the audio frequency processing system further includes control
Molding block, the control module are modulated processing to control modulation module for connecting control device to audio comprising wireless
Connection unit and signal transmitter unit, signal transmitter unit, which is electrically connected, to be wirelessly connected, and is wirelessly connected unit and main control MCU is wireless
Connection.
9. a kind of audio frequency processing system according to claim 5, which is characterized in that the output module is loud speaker, institute
It is audio input channel to state input module.
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| CN201810631504.1A CN108806705A (en) | 2018-06-19 | 2018-06-19 | Audio-frequency processing method and processing system |
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| CN201810631504.1A CN108806705A (en) | 2018-06-19 | 2018-06-19 | Audio-frequency processing method and processing system |
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| JP4955560B2 (en) * | 2004-09-17 | 2012-06-20 | デジタル ライズ テクノロジー シーオー．，エルティーディー． | Multi-channel digital speech coding apparatus and method |
| US8260607B2 (en) * | 2003-10-30 | 2012-09-04 | Koninklijke Philips Electronics, N.V. | Audio signal encoding or decoding |
| CN104464786A (en) * | 2014-11-21 | 2015-03-25 | 西安诺瓦电子科技有限公司 | Audio frequency controlling device and method |
| CN206077668U (en) * | 2016-09-06 | 2017-04-05 | 佛山科学技术学院 | A kind of Audio Processing control system for possessing feedback suppression and decrease of noise functions |
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| US8260607B2 (en) * | 2003-10-30 | 2012-09-04 | Koninklijke Philips Electronics, N.V. | Audio signal encoding or decoding |
| CN1993891A (en) * | 2004-07-28 | 2007-07-04 | 松下电器产业株式会社 | Relay device and signal decoding device |
| JP4955560B2 (en) * | 2004-09-17 | 2012-06-20 | デジタル ライズ テクノロジー シーオー．，エルティーディー． | Multi-channel digital speech coding apparatus and method |
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Application publication date: 20181113 |