CN105374363B - Audio signal encoding method and system - Google Patents
Audio signal encoding method and system Download PDFInfo
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- CN105374363B CN105374363B CN201410421971.3A CN201410421971A CN105374363B CN 105374363 B CN105374363 B CN 105374363B CN 201410421971 A CN201410421971 A CN 201410421971A CN 105374363 B CN105374363 B CN 105374363B
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Abstract
The invention discloses a kind of audio signal encoding methods, terminal obtains the mixed audio signal in current operating environment in real time, and the mixed audio signal got is parsed, it is greater than the audio signal frequency of preset threshold as effective frequency to extract in mixed audio signal intensity in each audio signal, and determine in preset coding frequency with the unmatched coding frequency of the effective frequency, using determining coding frequency as present encoding frequency, when receiving audio-frequency signal coding instruction, source data is encoded to audio signal using the present encoding frequency by the terminal.The invention also discloses a kind of audio-frequency signal coding systems.Influence present invention reduces the noise in environment to audio signal to be transmitted improves the accuracy rate of audio signal transmission.
Description
Technical field
The present invention relates to audio transmission field more particularly to audio signal encoding method and systems.
Background technique
With the development of audio communication technology, more and more terminals (such as air conditioner) are using sound come configured transmission and control
System instruction, other terminals are based on its sound pickup device and pick up the parameter and control instruction, and based on the parameter picked up with
Control instruction is correspondingly operated, its operating parameter is such as adjusted.
But in the prior art, when source data to be passed being encoded to audio signal, often by source data to be transmitted
It is audio signal according to preset frequency coding, and based on audio playing apparatus by the audio signal transmission to target terminal, but
Since the rattle devices (compressor and blower on such as air conditioner) of terminal itself can generate noise in vibration processes, simultaneously
Other rattle devices in the terminal local environment may also generate rattle devices, generate interference to the audio signal of transmission, lead
Cause audio signal transmission accuracy rate lower.
Summary of the invention
It is a primary object of the present invention to solve the lower technical problem of audio signal transmission accuracy rate.
To achieve the above object, a kind of audio signal encoding method provided by the invention, the audio signal encoding method
The following steps are included:
Terminal obtains the mixed audio signal in current operating environment in real time, and carries out to the mixed audio signal got
Parsing, with the frequency and intensity of each audio signal in the determination mixed audio signal；
The terminal extracts intensity in each audio signal and is greater than the audio signal frequency of preset threshold as effective frequency；
The terminal determines with the unmatched coding frequency of the effective frequency in preset coding frequency, will be determining
Frequency is encoded as present encoding frequency；
When receiving audio-frequency signal coding instruction, source data is encoded to by the terminal using the present encoding frequency
Audio signal.
Preferably, the terminal is determined with the unmatched coding frequency of effective frequency in preset coding frequency, will be true
Fixed coding frequency includes: as the step of present encoding frequency
The terminal is based on each effective frequency and preset float value generates the corresponding effective frequency of each effective frequency
Rate section；
Preset coding frequency is compared the terminal with each effective frequency section, described has with determining with each
Imitate the unmatched coding frequency of frequency separation；
The terminal is using determining coding frequency as present encoding frequency.
Preferably, the terminal is extracted intensity in each audio signal and is used as greater than the audio signal frequency of preset threshold and has
Imitate frequency further include:
When preset coding frequency is matched with the effective frequency, the terminal exports prompt information.
Preferably, the terminal determine in preset coding frequency with the unmatched coding frequency of the effective frequency,
Include: using determining coding frequency as the step of present encoding frequency
The terminal determine in preset coding frequency with the unmatched coding frequency of the effective frequency；
When having multiple with the unmatched coding frequency of the effective frequency, the terminal determines multiple coding frequencies
Priority；
The terminal is using the coding frequency of highest priority as present encoding frequency.
Preferably, the terminal determine in preset coding frequency with the unmatched coding frequency of the effective frequency,
Include: using determining coding frequency as the step of present encoding frequency
The terminal according to preset priority by each preset coding frequency successively with each effective frequency into
Row compares；
When having coding frequency and each effective frequency to mismatch, the terminal is using the coding frequency as current
Encode frequency.
Preferably, when receiving audio-frequency signal coding instruction, the terminal uses the present encoding frequency by source number
Before the step of being encoded to audio signal, the audio signal encoding method further include:
The terminal obtains the intensity of the mixed audio signal received, and increases the intensity of mixed audio signal default
Value；
The terminal updates current audio signals encoding strength using the intensity for the mixed audio signal for increasing preset value.
Preferably, described when receiving audio-frequency signal coding instruction, the terminal will using the present encoding frequency
Source data is encoded to the step of audio signal and includes:
When receiving audio-frequency signal coding instruction, the terminal is believed using the present encoding frequency and present video
Source data is encoded to audio signal by number encoding strength.
In addition, to achieve the above object, the present invention also proposes a kind of audio signal encoding method, the audio-frequency signal coding
Method includes:
When detecting audio-frequency signal coding instruction, terminal obtains source data to be encoded；
The terminal extracts intensity in each audio signal and is greater than the audio signal frequency of preset threshold as effective frequency；
The terminal determines with the unmatched coding frequency of the effective frequency in preset coding frequency, will be determining
Frequency is encoded as present encoding frequency；
The source data is encoded to audio signal using the present encoding frequency by the terminal.
In addition, to achieve the above object, the present invention also proposes a kind of audio-frequency signal coding system, the audio-frequency signal coding
System includes:
Audio signal sample module, for obtaining the mixed audio signal in current operating environment；
Parsing module, for being parsed to the mixed audio signal got, in the determination mixed audio signal
The frequency and intensity of each audio signal；
Extraction module is greater than the audio signal frequency of preset threshold as effective for extracting intensity in each audio signal
Frequency；
Processing module will for determining with the unmatched coding frequency of the effective frequency in preset coding frequency
Determining coding frequency is as present encoding frequency；
Coding module, for when receiving audio-frequency signal coding instruction, using the present encoding frequency by source data
It is encoded to audio signal.
Preferably, the processing module includes:
Generation unit, for being generated based on each effective frequency and preset float value, each effective frequency is corresponding to be had
Imitate frequency separation；
Comparing unit, for preset coding frequency to be compared with each effective frequency section, with it is determining with it is each
The unmatched coding frequency in the effective frequency section；
Processing unit, the coding frequency for will determine is as present encoding frequency.
Preferably, the audio-frequency signal coding system further include:
Output module, for exporting prompt information when preset coding frequency is matched with the effective frequency.
Preferably, the processing module includes:
Determination unit, for determine in preset coding frequency with the unmatched coding frequency of the effective frequency；With
And when having multiple with the unmatched coding frequency of the effective frequency, the priority of multiple coding frequencies is determined；
Processing unit, for using the coding frequency of highest priority as present encoding frequency.
Preferably, the processing module includes:
Comparing unit, for according to preset priority by each preset coding frequency successively with each effective frequency
Rate is compared；
Processing unit, for when having coding frequency and each effective frequency to mismatch, which to be made
For present encoding frequency.
Preferably, the audio-frequency signal coding system further include:
Module is obtained, for obtaining the intensity of the mixed audio signal received；
Processing module is also used to increase preset value to the intensity of mixed audio signal, and using the mixing for increasing preset value
The intensity of audio signal updates current audio signals encoding strength.
Preferably, the coding module is also used to when receiving audio-frequency signal coding instruction, using the present encoding
Source data is encoded to audio signal by frequency and current audio signals encoding strength.
In addition, to achieve the above object, the present invention also proposes a kind of audio-frequency signal coding system, the audio-frequency signal coding
System includes:
Module is obtained, for obtaining source data to be encoded when detecting audio-frequency signal coding instruction；
Extraction module is greater than the audio signal frequency of preset threshold as effective for extracting intensity in each audio signal
Frequency；
Processing module will for determining with the unmatched coding frequency of the effective frequency in preset coding frequency
Determining coding frequency is as present encoding frequency；
Coding module, for the source data to be encoded to audio signal using the present encoding frequency.
Audio signal encoding method proposed by the present invention and system, terminal obtain the mixing sound in current operating environment in real time
Frequency signal, and parsing to the mixed audio signal got is strong in each audio signal to extract in mixed audio signal
The audio signal frequency that degree is greater than preset threshold is used as effective frequency, and in the preset coding frequency of determination with the effective frequency
Unmatched coding frequency is receiving audio-frequency signal coding instruction using determining coding frequency as present encoding frequency
When, source data is encoded to audio signal using the present encoding frequency by the terminal, is treated with the noise reduced in environment
The influence of the audio signal of transmission improves the accuracy rate of audio signal transmission.
Detailed description of the invention
Fig. 1 is the hardware structural diagram of the first embodiment for the terminal that the present invention realizes audio-frequency signal coding；
Fig. 2 is the hardware structural diagram of the second embodiment for the terminal that the present invention realizes audio-frequency signal coding；
Fig. 3 is the functional block diagram of the preferred embodiment of Fig. 1 sound intermediate frequency signal coding system；
Fig. 4 is the functional block diagram of the preferred embodiment of Fig. 2 sound intermediate frequency signal coding system；
Fig. 5 is the flow diagram of audio signal encoding method first embodiment of the present invention；
Fig. 6 is the flow diagram of audio signal encoding method second embodiment of the present invention.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
Referring to Fig.1, Fig. 1 is the hardware configuration signal of the first embodiment for the terminal that the present invention realizes audio-frequency signal coding
Figure.
The terminal 1 includes processing unit 11, storage unit 12, coding unit 13, voice pickup unit 14 and audio letter
Number coded system 15.The terminal can be that controlled terminal is also controlling terminal.
The coding unit 13, under the control of processing unit 11, source data to be encoded to be encoded to audio letter
Number.
The voice pickup unit 14, for the audio in the running environment where being picked up under the control of processing unit 11
Signal.
Storage unit 12, for storing audio-frequency signal coding system 15 and its operation data, preset coding frequency.It needs
, it is emphasized that the storage unit 12 is either an individual storage device, is also possible to the system of multiple and different storage devices
Claim, therefore not to repeat here.
The processing unit 11, for calling and executing audio-frequency signal coding system 15, control voice pickup unit 14 is real-time
The mixed audio signal in current operating environment is obtained, the mitigation audio signal got is parsed with the determination mixing
The frequency and intensity of each audio signal in audio signal are determined and are mismatched in preset coding frequency with the effective frequency
Coding frequency, when detecting audio-frequency signal coding instruction, call and compile using determining coding frequency as present encoding frequency
The source data is encoded to audio signal using the present encoding frequency by code unit 13.The processing unit 11 and storage unit
12 both can be individual unit respectively, also can integrate together, constitute a controller, therefore not to repeat here.
It is the hardware structural diagram of the second embodiment for the terminal that the present invention realizes audio-frequency signal coding referring to Fig. 2, Fig. 2
The terminal 2 includes processing unit 21, storage unit 22, coding unit 23, voice pickup unit 24 and audio letter
Number coded system 25.
The coding unit 23, under the control of processing unit 21, source data to be encoded to be encoded to audio letter
Number.
The voice pickup unit 24, for the audio in the running environment where being picked up under the control of processing unit 21
Signal.
Storage unit 22, for storing audio-frequency signal coding system 25 and its operation data, preset coding frequency.It needs
, it is emphasized that the storage unit 22 is either an individual storage device, is also possible to the system of multiple and different storage devices
Claim, therefore not to repeat here.
The processing unit 21 is detecting audio signal for calling and executing air conditioner operating parameter adjustment system 25
When coded command, terminal obtains source data to be encoded, and it is mixed in current operating environment to call voice pickup unit 24 to obtain
Audio signal is closed, and the mixed audio signal got is parsed, with each audio in the determination mixed audio signal
The frequency and intensity of signal extract intensity in each audio signal and are greater than the audio signal frequency of preset threshold as effectively frequency
Rate is extracted the preset coding frequency that storage unit 22 stores, is determined in preset coding frequency with the effective frequency not
Matched coding frequency calls coding unit 23 to use the current volume using determining coding frequency as present encoding frequency
The source data is encoded to audio signal by code frequency.The processing unit 21 and storage unit 22 both can be individual list respectively
Member also can integrate together, constitute a controller, therefore not to repeat here.
The present invention provides a kind of audio-frequency signal coding system.
It is the functional block diagram of the preferred embodiment of Fig. 1 sound intermediate frequency signal coding system referring to Fig. 3, Fig. 3.
It is emphasized that it will be apparent to those skilled in the art that functional block diagram shown in Fig. 3 is only one preferably real
The exemplary diagram of example is applied, those skilled in the art surrounds audio-frequency signal coding system 15 shown in Fig. 3, can carry out new function easily
The supplement of energy module；The title of each functional module is self-defined title, is only used for auxiliary and understands the audio-frequency signal coding system 15
Each program function block, be not used in restriction technical solution of the present invention, the core of technical solution of the present invention is each self-defining name
The function to be reached of the functional module of title.
The audio-frequency signal coding system 15 that the present embodiment proposes, comprising:
Audio signal sample module 151, for the mixed audio signal in real-time or timing acquisition current operating environment；
In this in real time example, which can in real time or timing acquisition audio collecting device (such as microphone) acquires
The mixed audio signal arrived.
Parsing module 152, for being parsed to the mixed audio signal got, with the determination mixed audio signal
In each audio signal frequency and intensity；
In the present embodiment, Fourier transform is carried out to the mixed audio signal received, the time domain of audio signal is believed
Number frequency-region signal is converted to, the frequency for each audio signal for including in the mixed audio signal can be determined based on the frequency-region signal
Rate, and the amplitude of the audio signal of each frequency is obtained, which is the intensity of audio signal.
Extraction module 153, the audio signal frequency conduct for being greater than preset threshold for extracting intensity in each audio signal
Effective frequency；
In the present embodiment, the intensity of the audio signal can be configured by manufacturer or user, due to noise signal
Intensity may not influence the accuracy rate of the audio signal transmission of terminal output when smaller, then extract strong in each audio signal
Degree is greater than the audio signal frequency of preset threshold as effective frequency.
Processing module 154, for determine in preset coding frequency with the unmatched coding frequency of the effective frequency,
Using determining coding frequency as present encoding frequency；
In the present embodiment, preset coding frequency is matched with effective frequency refers to preset coding frequency and effective frequency
Between difference be less than preset threshold, i.e., the described processing module 154 includes:
Generation unit, for being generated based on each effective frequency and preset float value, each effective frequency is corresponding to be had
Imitate frequency separation；
Comparing unit, for preset coding frequency to be compared with each effective frequency section, with it is determining with it is each
The unmatched coding frequency in the effective frequency section；
Processing unit, the coding frequency for will determine is as present encoding frequency.
By above-mentioned alignments, so that the determination of present encoding frequency is more accurate.
Coding module 155, for when receiving audio-frequency signal coding instruction, using the present encoding frequency by source number
According to being encoded to audio signal.
The source data can may include lteral data or audio data for the data type currently entered perhaps prestored
Deng.When text information is encoded to audio signal, text information can be first converted to audio data, and the sound that will be converted to
Frequency evidence is encoded to audio signal.
The audio-frequency signal coding system that the present embodiment proposes, audio signal sample module obtain in current operating environment in real time
Mixed audio signal, parsing module parses the mixed audio signal got, each in mixed audio signal to extract
For intensity greater than the audio signal frequency of preset threshold as effective frequency, processing module determines preset coding in a audio signal
In frequency with the unmatched coding frequency of the effective frequency, and using determining coding frequency as present encoding frequency,
When receiving audio-frequency signal coding instruction, source data is encoded to audio signal using the present encoding frequency by coding module,
To reduce influence of the noise in environment to audio signal to be transmitted, the accuracy rate of audio signal transmission is improved.
It further, is raising user experience, the audio-frequency signal coding system further include:
Output module, for exporting prompt information when preset coding frequency is matched with the effective frequency.
In the present embodiment, which can be light prompt information and/or auditory tone cues information and/or text information.
When standby signal is light prompt information, preset color can be switched to for control instructions lamp by exporting the light prompt information, or
Control instructions lamp is with preset frequency scintillation, or lights indicator light etc., and auditory tone cues information can be control loudspeaker output
Preset alarm alert signal.User is based on above-mentioned prompt information, can know currently to be not suitable for carrying out audio signal output in time
Operation.
It will be appreciated by persons skilled in the art that for improve user experience, preset coding frequency with it is described
When effective frequency matches, compiled using the effective frequency matched coding frequency minimum with intensity in each effective frequency as current
Code frequency.
Further, to improve the accuracy to audio-frequency signal coding, the processing module 154 includes:
Determination unit, for determine in preset coding frequency with the unmatched coding frequency of the effective frequency；With
And when having multiple with the unmatched coding frequency of the effective frequency, the priority of multiple coding frequencies is determined；
Processing unit, for using the coding frequency of highest priority as present encoding frequency.
Specific example is as follows: pre-arranged code frequency is 12KHZ, 14KHZ, 16KHZ and 18KHZ, the sound being currently received
Frequency mitigates the audio signal in audio signal comprising 12KHZ and 14KHZ, and the priority of 16KHZ is greater than 18KHZ, therefore selects excellent
The first higher 16KHZ of grade is as present encoding frequency.The priority of each coding frequency can be by for being set.
Further, number is compared to reduce, to reduce terminal energy consumption, the processing module 154 includes:
Comparing unit, for according to preset priority by each preset coding frequency successively with each effective frequency
Rate is compared；
Processing unit, for when having coding frequency and each effective frequency to mismatch, which to be made
For present encoding frequency.
Specific example is as follows: pre-arranged code frequency according to priority ranking be 12KHZ, 14KHZ, 16KHZ and 18KHZ,
The audio being currently received mitigates intensity in audio signal and is greater than the audio that the audio signal of preset threshold is 12KHZ and 14KHZ
Then 12KHZ is compared with 12KHZ and 14KHZ first for signal, due to exist and the matched effective frequency of coding frequency,
Then continue for 14KHZ to be compared with 12KHZ and 14KHZ, until 16KHZ and 12KHZ and 14KHZ is mismatched, at this time will
16KHZ is as present encoding frequency.The priority of each coding frequency can be by for being set.
Further, to reduce terminal energy consumption, audio-frequency signal coding system is stated further include:
Module is obtained, for obtaining the intensity of the mixed audio signal received；
Processing module is also used to increase preset value to the intensity of mixed audio signal, and using the mixing for increasing preset value
The intensity of audio signal updates current audio signals encoding strength.
In the present embodiment, the coding module is also used to work as when receiving audio-frequency signal coding instruction using described
Source data is encoded to audio signal by preceding coding frequency and current audio signals encoding strength.
It is encoded to avoid all audio signals from being all made of maximum intensity, so that terminal energy consumption is larger, is then only needed
The intensity adjustment for the audio signal that present encoding is generated to more than the intensity of current noise signal.The preset value can be by
User sets.
It is the functional block diagram of the preferred embodiment of Fig. 2 sound intermediate frequency signal coding system referring to Fig. 4, Fig. 4.
It is emphasized that it will be apparent to those skilled in the art that functional block diagram shown in Fig. 4 is only one preferably real
The exemplary diagram of example is applied, those skilled in the art surrounds audio-frequency signal coding system 25 shown in Fig. 4, can carry out new function easily
The supplement of energy module；The title of each functional module is self-defined title, is only used for auxiliary and understands the audio-frequency signal coding system 25
Each program function block, be not used in restriction technical solution of the present invention, the core of technical solution of the present invention is each self-defining name
The function to be reached of the functional module of title.
The audio-frequency signal coding system 25 that the present embodiment proposes, comprising:
Module 251 is obtained, for obtaining source data to be encoded, and obtain when detecting audio-frequency signal coding instruction
Take the mixed audio signal in current operating environment；
In the present embodiment, Fourier transform is carried out to the mixed audio signal received, the time domain of audio signal is believed
Number frequency-region signal is converted to, the frequency for each audio signal for including in the mixed audio signal can be determined based on the frequency-region signal
Rate, and the amplitude of the audio signal of each frequency is obtained, which is the intensity of audio signal.
Parsing module 252, for being parsed to the mixed audio signal got, with the determination mixed audio signal
In each audio signal frequency and intensity
Extraction module 253, the audio signal frequency conduct for being greater than preset threshold for extracting intensity in each audio signal
Effective frequency；
In the present embodiment, the intensity of the audio signal can be configured by manufacturer or user, due to noise signal
Intensity may not influence the accuracy rate of the audio signal transmission of terminal output when smaller, then extract strong in each audio signal
Degree is greater than the audio signal frequency of preset threshold as effective frequency.
Processing module 254, for determine in preset coding frequency with the unmatched coding frequency of the effective frequency,
Using determining coding frequency as present encoding frequency；
In the present embodiment, preset coding frequency is matched with effective frequency refers to preset coding frequency and effective frequency
Between difference be less than preset threshold, i.e., the described processing module 254 includes:
Generation unit, for being generated based on each effective frequency and preset float value, each effective frequency is corresponding to be had
Imitate frequency separation；
Comparing unit, for preset coding frequency to be compared with each effective frequency section, with it is determining with it is each
The unmatched coding frequency in the effective frequency section；
Processing unit, the coding frequency for will determine is as present encoding frequency.
By above-mentioned alignments, so that the determination of present encoding frequency is more accurate.
Coding module 255, for the source data to be encoded to audio signal using the present encoding frequency.
The source data can may include lteral data or audio data for the data type currently entered perhaps prestored
Deng.When text information is encoded to audio signal, text information can be first converted to audio data, and the sound that will be converted to
Frequency evidence is encoded to audio signal.
The audio-frequency signal coding system that the present embodiment proposes obtains module and obtains when detecting audio-frequency signal coding instruction
The mixed audio signal in source data and current operating environment to be encoded is taken, parsing module believes the mixed audio got
It number is parsed, with the frequency and intensity of each audio signal in the determination mixed audio signal；Extraction module extracts each
Intensity is greater than the audio signal frequency of preset threshold as effective frequency in audio signal；Processing module determines preset coding frequency
In rate with the unmatched coding frequency of the effective frequency, and using determining coding frequency as present encoding frequency；Coding
The source data is encoded to audio signal using the present encoding frequency by module, to reduce the noise in environment to be transmitted
Audio signal influence, improve the accuracy rate of audio signal transmission.
It further, is raising user experience, the audio-frequency signal coding system further include:
Output module, for exporting prompt information when preset coding frequency is matched with the effective frequency.
In the present embodiment, which can be light prompt information and/or auditory tone cues information and/or text information.
When standby signal is light prompt information, preset color can be switched to for control instructions lamp by exporting the light prompt information, or
Control instructions lamp is with preset frequency scintillation, or lights indicator light etc., and auditory tone cues information can be control loudspeaker output
Preset alarm alert signal.User is based on above-mentioned prompt information, can know currently to be not suitable for carrying out audio signal output in time
Operation.
It will be appreciated by persons skilled in the art that for improve user experience, preset coding frequency with it is described
When effective frequency matches, compiled using the effective frequency matched coding frequency minimum with intensity in each effective frequency as current
Code frequency.
Further, to improve the accuracy to audio-frequency signal coding, the processing module 254 includes:
Determination unit, for determine in preset coding frequency with the unmatched coding frequency of the effective frequency；With
And when having multiple with the unmatched coding frequency of the effective frequency, the priority of multiple coding frequencies is determined；
Processing unit, for using the coding frequency of highest priority as present encoding frequency.
Specific example is as follows: pre-arranged code frequency is 12KHZ, 14KHZ, 16KHZ and 18KHZ, the sound being currently received
Frequency mitigates the audio signal in audio signal comprising 12KHZ and 14KHZ, and the priority of 16KHZ is greater than 18KHZ, therefore selects excellent
The first higher 16KHZ of grade is as present encoding frequency.The priority of each coding frequency can be by for being set.
Further, number is compared to reduce, to reduce terminal energy consumption, the processing module 254 includes:
Comparing unit, for according to preset priority by each preset coding frequency successively with each effective frequency
Rate is compared；
Processing unit, for when having coding frequency and each effective frequency to mismatch, which to be made
For present encoding frequency.
Specific example is as follows: pre-arranged code frequency according to priority ranking be 12KHZ, 14KHZ, 16KHZ and 18KHZ,
The audio being currently received mitigates intensity in audio signal and is greater than the audio that the audio signal of preset threshold is 12KHZ and 14KHZ
Then 12KHZ is compared with 12KHZ and 14KHZ first for signal, due to exist and the matched effective frequency of coding frequency,
Then continue for 14KHZ to be compared with 12KHZ and 14KHZ, until 16KHZ and 12KHZ and 14KHZ is mismatched, at this time will
16KHZ is as present encoding frequency.The priority of each coding frequency can be by for being set.
Further, to reduce terminal energy consumption, audio-frequency signal coding system is stated further include:
Module is obtained, for obtaining the intensity of the mixed audio signal received；
Processing module is also used to increase preset value to the intensity of mixed audio signal, and using the mixing for increasing preset value
The intensity of audio signal updates current audio signals encoding strength.
In the present embodiment, the coding module is also used to work as when receiving audio-frequency signal coding instruction using described
Source data is encoded to audio signal by preceding coding frequency and current audio signals encoding strength.
It is encoded to avoid all audio signals from being all made of maximum intensity, so that terminal energy consumption is larger, is then only needed
The intensity adjustment for the audio signal that present encoding is generated to more than the intensity of current noise signal.The preset value can be by
User sets.
It is the flow diagram of audio signal encoding method first embodiment of the present invention referring to Fig. 5, Fig. 5.
The audio signal encoding method that the present embodiment proposes, comprising the following steps:
Step S10, terminal are in real time or the mixed audio signal in timing acquisition current operating environment, and mixed to what is got
It closes audio signal to be parsed, with the frequency and intensity of each audio signal in the determination mixed audio signal；
In this in real time example, which can in real time or timing acquisition audio collecting device (such as microphone) acquires
The mixed audio signal arrived.In the present embodiment, Fourier transform is carried out to the mixed audio signal received, by audio signal
Time-domain signal be converted to frequency-region signal, each audio for including in the mixed audio signal can be determined based on the frequency-region signal
The frequency of signal, and the amplitude of the audio signal of each frequency is obtained, which is the intensity of audio signal.
Step S20, the terminal extract the audio signal frequency conduct that intensity in each audio signal is greater than preset threshold
Effective frequency；
In the present embodiment, the intensity of the audio signal can be configured by manufacturer or user, due to noise signal
Intensity may not influence the accuracy rate of the audio signal transmission of terminal output when smaller, then extract strong in each audio signal
Degree is greater than the audio signal frequency of preset threshold as effective frequency.
Step S30, the terminal determine in preset coding frequency with the unmatched coding frequency of the effective frequency,
Using determining coding frequency as present encoding frequency；
In the present embodiment, preset coding frequency is matched with effective frequency refers to preset coding frequency and effective frequency
Between difference be less than preset threshold, i.e., the described step S30 includes:
The terminal is based on each effective frequency and preset float value generates the corresponding effective frequency of each effective frequency
Rate section；
Preset coding frequency is compared the terminal with each effective frequency section, described has with determining with each
Imitate the unmatched coding frequency of frequency separation；
The terminal is using determining coding frequency as present encoding frequency.
By above-mentioned alignments, so that the determination of present encoding frequency is more accurate.
Step S40, when receiving audio-frequency signal coding instruction, the terminal uses the present encoding frequency by source number
According to being encoded to audio signal.
The source data can may include lteral data or audio data for the data type currently entered perhaps prestored
Deng.When text information is encoded to audio signal, text information can be first converted to audio data, and the sound that will be converted to
Frequency evidence is encoded to audio signal.
The audio signal encoding method that the present embodiment proposes, terminal obtain the letter of the mixed audio in current operating environment in real time
Number, and the mixed audio signal got is parsed, to extract, intensity is big in each audio signal in mixed audio signal
In preset threshold audio signal frequency as effective frequency, and determine in preset coding frequency with the effective frequency not
Matched coding frequency, using determining coding frequency as present encoding frequency, when receiving audio-frequency signal coding instruction, institute
It states terminal and source data is encoded to by audio signal using the present encoding frequency, to reduce the noise in environment to be transmitted
The influence of audio signal improves the accuracy rate of audio signal transmission.
It further, is raising user experience, after the step S20, the audio signal encoding method further include:
When preset coding frequency is matched with the effective frequency, the terminal exports prompt information
In the present embodiment, which can be light prompt information and/or auditory tone cues information and/or text information.
When standby signal is light prompt information, preset color can be switched to for control instructions lamp by exporting the light prompt information, or
Control instructions lamp is with preset frequency scintillation, or lights indicator light etc., and auditory tone cues information can be control loudspeaker output
Preset alarm alert signal.User is based on above-mentioned prompt information, can know currently to be not suitable for carrying out audio signal output in time
Operation.
It will be appreciated by persons skilled in the art that for improve user experience, preset coding frequency with it is described
When effective frequency matches, compiled using the effective frequency matched coding frequency minimum with intensity in each effective frequency as current
Code frequency.
Further, to improve the accuracy to audio-frequency signal coding, the step S30 includes:
The terminal determine in preset coding frequency with the unmatched coding frequency of the effective frequency；
When having multiple with the unmatched coding frequency of the effective frequency, the terminal determines multiple coding frequencies
Priority；
The terminal is using the coding frequency of highest priority as present encoding frequency.
Specific example is as follows: pre-arranged code frequency is 12KHZ, 14KHZ, 16KHZ and 18KHZ, the sound being currently received
Frequency mitigates the audio signal in audio signal comprising 12KHZ and 14KHZ, and the priority of 16KHZ is greater than 18KHZ, therefore selects excellent
The first higher 16KHZ of grade is as present encoding frequency.The priority of each coding frequency can be by for being set.
Further, number is compared to reduce, to reduce terminal energy consumption, the processing module 154 includes:
The terminal according to preset priority by each preset coding frequency successively with each effective frequency into
Row compares；
When having coding frequency and each effective frequency to mismatch, the terminal is using the coding frequency as current
Encode frequency.
Specific example is as follows: pre-arranged code frequency according to priority ranking be 12KHZ, 14KHZ, 16KHZ and 18KHZ,
The audio being currently received mitigates intensity in audio signal and is greater than the audio that the audio signal of preset threshold is 12KHZ and 14KHZ
Then 12KHZ is compared with 12KHZ and 14KHZ first for signal, due to exist and the matched effective frequency of coding frequency,
Then continue for 14KHZ to be compared with 12KHZ and 14KHZ, until 16KHZ and 12KHZ and 14KHZ is mismatched, at this time will
16KHZ is as present encoding frequency.The priority of each coding frequency can be by for being set.
It further, is reduction terminal energy consumption, before the step S40, the audio signal encoding method further include:
The terminal obtains the intensity of the mixed audio signal received, and increases the intensity of mixed audio signal default
Value；
The terminal updates current audio signals encoding strength using the intensity for the mixed audio signal for increasing preset value.
In the present embodiment, the step S40 includes: when receiving audio-frequency signal coding instruction, and the terminal uses
Source data is encoded to audio signal by the present encoding frequency and current audio signals encoding strength.
It is encoded to avoid all audio signals from being all made of maximum intensity, so that terminal energy consumption is larger, is then only needed
The intensity adjustment for the audio signal that present encoding is generated to more than the intensity of current noise signal.The preset value can be by
User sets.
It is the flow diagram of audio signal encoding method second embodiment of the present invention referring to Fig. 6, Fig. 6.
The audio signal encoding method that the present embodiment proposes, comprising:
Step S50, when detecting audio-frequency signal coding instruction, terminal obtains source data to be encoded；
Step S60, the terminal obtain the mixed audio signal in current operating environment, and to the mixed audio got
Signal is parsed, with the frequency and intensity of each audio signal in the determination mixed audio signal；
In the present embodiment, Fourier transform is carried out to the mixed audio signal received, the time domain of audio signal is believed
Number frequency-region signal is converted to, the frequency for each audio signal for including in the mixed audio signal can be determined based on the frequency-region signal
Rate, and the amplitude of the audio signal of each frequency is obtained, which is the intensity of audio signal.
Step S70, the terminal extract the audio signal frequency conduct that intensity in each audio signal is greater than preset threshold
Effective frequency；
In the present embodiment, the intensity of the audio signal can be configured by manufacturer or user, due to noise signal
Intensity may not influence the accuracy rate of the audio signal transmission of terminal output when smaller, then extract strong in each audio signal
Degree is greater than the audio signal frequency of preset threshold as effective frequency.
Step S80, the terminal determine in preset coding frequency with the unmatched coding frequency of the effective frequency,
Using determining coding frequency as present encoding frequency；
In the present embodiment, preset coding frequency is matched with effective frequency refers to preset coding frequency and effective frequency
Between difference be less than preset threshold, i.e., the described step S80 includes:
The terminal is based on each effective frequency and preset float value generates the corresponding effective frequency of each effective frequency
Rate section；
Preset coding frequency is compared the terminal with each effective frequency section, described has with determining with each
The unmatched coding frequency of frequency separation is imitated, and using determining coding frequency as present encoding frequency.
By above-mentioned alignments, so that the determination of present encoding frequency is more accurate.
The source data is encoded to audio signal using the present encoding frequency by step S90, the terminal.
The source data can may include lteral data or audio data for the data type currently entered perhaps prestored
Deng.When text information is encoded to audio signal, text information can be first converted to audio data, and the sound that will be converted to
Frequency evidence is encoded to audio signal.
The audio signal encoding method that the present embodiment proposes, when detecting audio-frequency signal coding instruction, the terminal is obtained
The mixed audio signal in source data and current operating environment to be encoded is taken, and the mixed audio signal got is carried out
Parsing, with the frequency and intensity of each audio signal in the determination mixed audio signal；The terminal extracts each audio letter
The audio signal frequency that intensity is greater than preset threshold in number has as effective frequency, and in determining preset coding frequency with described
The unmatched coding frequency of frequency is imitated, using determining coding frequency as present encoding frequency；The terminal is worked as described in using
The source data is encoded to audio signal by preceding coding frequency, to reduce the noise in environment to the shadow of audio signal to be transmitted
It rings, improves the accuracy rate of audio signal transmission.
It further, is raising user experience, after the step S70, the audio signal encoding method further include:
When preset coding frequency is matched with the effective frequency, the terminal exports prompt information.
In the present embodiment, which can be light prompt information and/or auditory tone cues information and/or text information.
When standby signal is light prompt information, preset color can be switched to for control instructions lamp by exporting the light prompt information, or
Control instructions lamp is with preset frequency scintillation, or lights indicator light etc., and auditory tone cues information can be control loudspeaker output
Preset alarm alert signal.User is based on above-mentioned prompt information, can know currently to be not suitable for carrying out audio signal output in time
Operation.
It will be appreciated by persons skilled in the art that for improve user experience, preset coding frequency with it is described
When effective frequency matches, compiled using the effective frequency matched coding frequency minimum with intensity in each effective frequency as current
Code frequency.
Further, to improve the accuracy to audio-frequency signal coding, the step S80 includes:
The terminal determine in preset coding frequency with the unmatched coding frequency of the effective frequency；
When having multiple with the unmatched coding frequency of the effective frequency, the terminal determines multiple coding frequencies
Priority, and using the coding frequency of highest priority as present encoding frequency.
Specific example is as follows: pre-arranged code frequency is 12KHZ, 14KHZ, 16KHZ and 18KHZ, the sound being currently received
Frequency mitigates the audio signal in audio signal comprising 12KHZ and 14KHZ, and the priority of 16KHZ is greater than 18KHZ, therefore selects excellent
The first higher 16KHZ of grade is as present encoding frequency.The priority of each coding frequency can be by for being set.
Further, number is compared to reduce, to reduce terminal energy consumption, the step S80 includes:
The terminal according to preset priority by each preset coding frequency successively with each effective frequency into
Row compares；
When having coding frequency and each effective frequency to mismatch, the terminal is using the coding frequency as current
Encode frequency.
Specific example is as follows: pre-arranged code frequency according to priority ranking be 12KHZ, 14KHZ, 16KHZ and 18KHZ,
The audio being currently received mitigates intensity in audio signal and is greater than the audio that the audio signal of preset threshold is 12KHZ and 14KHZ
Then 12KHZ is compared with 12KHZ and 14KHZ first for signal, due to exist and the matched effective frequency of coding frequency,
Then continue for 14KHZ to be compared with 12KHZ and 14KHZ, until 16KHZ and 12KHZ and 14KHZ is mismatched, at this time will
16KHZ is as present encoding frequency.The priority of each coding frequency can be by for being set.
It further, is reduction terminal energy consumption, before the step S90, the audio signal encoding method further include:
The terminal obtains the intensity of the mixed audio signal received；
The terminal increases preset value to the intensity of mixed audio signal, and using the mixed audio letter for increasing preset value
Number intensity update current audio signals encoding strength.
In the present embodiment, the step S90 includes: when receiving audio-frequency signal coding instruction, and the terminal uses
Source data is encoded to audio signal by the present encoding frequency and current audio signals encoding strength.
It is encoded to avoid all audio signals from being all made of maximum intensity, so that terminal energy consumption is larger, is then only needed
The intensity adjustment for the audio signal that present encoding is generated to more than the intensity of current noise signal.The preset value can be by
User sets.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the system that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or system institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or system.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on this understanding, technical solution of the present invention substantially in other words does the prior art
The part contributed out can be embodied in the form of software products, which is stored in a storage medium
In (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that a terminal device (can be mobile phone, computer, clothes
Business device, air conditioner or the network equipment etc.) execute method described in each embodiment of the present invention.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (16)
1. a kind of audio signal encoding method, which is characterized in that the audio signal encoding method the following steps are included:
Terminal in real time or timing acquisition current operating environment in mixed audio signal, and to the mixed audio signal got into
Row parsing, with the frequency and intensity of each audio signal in the determination mixed audio signal；
The terminal extracts intensity in each audio signal and is greater than the audio signal frequency of preset threshold as effective frequency；
The terminal determine in preset coding frequency with the unmatched coding frequency of the effective frequency, by determining coding
Frequency is as present encoding frequency；
When receiving audio-frequency signal coding instruction, source data is encoded to audio using the present encoding frequency by the terminal
Signal.
2. audio signal encoding method as described in claim 1, which is characterized in that the terminal determines preset coding frequency
In with the unmatched coding frequency of effective frequency, include: using determining coding frequency as the step of present encoding frequency
The terminal is based on each effective frequency and preset float value generates the corresponding effective frequency area of each effective frequency
Between；
Preset coding frequency is compared the terminal with each effective frequency section, with determining and each effective frequency
The unmatched coding frequency in rate section；
The terminal is using determining coding frequency as present encoding frequency.
3. audio signal encoding method as described in claim 1, which is characterized in that the terminal is extracted in each audio signal
Intensity was greater than after the step of audio signal frequency of preset threshold is as effective frequency, and the audio signal encoding method also wraps
It includes:
When preset coding frequency is matched with the effective frequency, the terminal exports prompt information.
4. audio signal encoding method as described in claim 1, which is characterized in that the terminal determines preset coding frequency
In with the unmatched coding frequency of the effective frequency, wrapped determining coding frequency as the step of present encoding frequency
It includes:
The terminal determine in preset coding frequency with the unmatched coding frequency of the effective frequency；
When having multiple with the unmatched coding frequency of the effective frequency, the terminal determines the preferential of multiple coding frequencies
Grade；
The terminal is using the coding frequency of highest priority as present encoding frequency.
5. audio signal encoding method as described in claim 1, which is characterized in that the terminal determines preset coding frequency
In with the unmatched coding frequency of the effective frequency, wrapped determining coding frequency as the step of present encoding frequency
It includes:
The terminal successively compares each preset coding frequency according to preset priority with each effective frequency
It is right；
When having coding frequency and each effective frequency to mismatch, the terminal is using the coding frequency as present encoding
Frequency.
6. audio signal encoding method as described in any one in claim 1-5, which is characterized in that compiled receiving audio signal
When code instruction, the terminal using the present encoding frequency source data is encoded to audio signal the step of before, the sound
Frequency coding method further include:
The terminal obtains the intensity of the mixed audio signal received, and increases preset value to the intensity of mixed audio signal；
The terminal updates current audio signals encoding strength using the intensity for the mixed audio signal for increasing preset value.
7. audio signal encoding method as claimed in claim 6, which is characterized in that described to refer to receiving audio-frequency signal coding
When enabling, the terminal using the present encoding frequency source data is encoded to audio signal the step of include:
When receiving audio-frequency signal coding instruction, the terminal is compiled using the present encoding frequency and current audio signals
Source data is encoded to audio signal by code intensity.
8. a kind of audio signal encoding method, which is characterized in that the audio signal encoding method includes:
When detecting audio-frequency signal coding instruction, terminal obtains source data to be encoded；
The terminal obtains the mixed audio signal in current operating environment, and solves to the mixed audio signal got
Analysis, with the frequency and intensity of each audio signal in the determination mixed audio signal；
The terminal extracts intensity in each audio signal and is greater than the audio signal frequency of preset threshold as effective frequency；
The terminal determine in preset coding frequency with the unmatched coding frequency of the effective frequency, by determining coding
Frequency is as present encoding frequency；
The source data is encoded to audio signal using the present encoding frequency by the terminal.
9. a kind of audio-frequency signal coding system, which is characterized in that the audio-frequency signal coding system includes:
Audio signal sample module, for the mixed audio signal in real-time or timing acquisition current operating environment；
Parsing module, for being parsed to the mixed audio signal got, with each in the determination mixed audio signal
The frequency and intensity of audio signal；
Extraction module is greater than the audio signal frequency of preset threshold as effectively frequency for extracting intensity in each audio signal
Rate；
Processing module will be determined for determining in preset coding frequency with the unmatched coding frequency of the effective frequency
Coding frequency as present encoding frequency；
Coding module, for being encoded source data using the present encoding frequency when receiving audio-frequency signal coding instruction
For audio signal.
10. audio-frequency signal coding system as claimed in claim 9, which is characterized in that the processing module includes:
Generation unit, for generating the corresponding effective frequency of each effective frequency based on each effective frequency and preset float value
Rate section；
Comparing unit, for preset coding frequency to be compared with each effective frequency section, with it is determining with it is each described
The unmatched coding frequency in effective frequency section；
Processing unit, the coding frequency for will determine is as present encoding frequency.
11. audio-frequency signal coding system as claimed in claim 9, which is characterized in that the audio-frequency signal coding system is also wrapped
It includes:
Output module, for exporting prompt information when preset coding frequency is matched with the effective frequency.
12. audio-frequency signal coding system as claimed in claim 9, which is characterized in that the processing module includes:
Determination unit, for determine in preset coding frequency with the unmatched coding frequency of the effective frequency；And
When having multiple with the unmatched coding frequency of the effective frequency, the priority of multiple coding frequencies is determined；
Processing unit, for using the coding frequency of highest priority as present encoding frequency.
13. audio-frequency signal coding system as claimed in claim 9, which is characterized in that the processing module includes:
Comparing unit, for according to preset priority by each preset coding frequency successively with each effective frequency into
Row compares；
Processing unit, for when thering is coding frequency and each effective frequency to mismatch, using the coding frequency as working as
Preceding coding frequency.
14. such as the described in any item audio-frequency signal coding systems of claim 9-13, which is characterized in that the audio-frequency signal coding
System further include:
Module is obtained, for obtaining the intensity of the mixed audio signal received；
Processing module is also used to increase preset value to the intensity of mixed audio signal, and using the mixed audio for increasing preset value
The intensity of signal updates current audio signals encoding strength.
15. audio-frequency signal coding system as claimed in claim 14, which is characterized in that the coding module is also used to connecing
When receiving audio-frequency signal coding instruction, source data is compiled using the present encoding frequency and current audio signals encoding strength
Code is audio signal.
16. a kind of audio-frequency signal coding system, which is characterized in that the audio-frequency signal coding system includes:
Module is obtained, for obtaining source data to be encoded, and obtain and currently transport when detecting audio-frequency signal coding instruction
Mixed audio signal in row environment；
Parsing module, for being parsed to the mixed audio signal got, with each in the determination mixed audio signal
The frequency and intensity of audio signal
Extraction module is greater than the audio signal frequency of preset threshold as effectively frequency for extracting intensity in each audio signal
Rate；
Processing module will be determined for determining in preset coding frequency with the unmatched coding frequency of the effective frequency
Coding frequency as present encoding frequency；
Coding module, for the source data to be encoded to audio signal using the present encoding frequency.
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| CN111415672A (en) * | 2020-03-27 | 2020-07-14 | 河北师范大学 | Method and system for coding, sending, receiving and analyzing underwater audio signal |
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| CN1462429A (en) * | 2001-05-08 | 2003-12-17 | 皇家菲利浦电子有限公司 | Audio coding |
| CN102859591A (en) * | 2010-04-12 | 2013-01-02 | 瑞典爱立信有限公司 | Method and arrangement for noise cancellation in a speech encoder |
| CN103368682A (en) * | 2012-03-29 | 2013-10-23 | 华为技术有限公司 | Signal coding and decoding method and equipment thereof |
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| KR100527002B1 (en) * | 2003-02-26 | 2005-11-08 | 한국전자통신연구원 | Apparatus and method of that consider energy distribution characteristic of speech signal |
| CN102436820B (en) * | 2010-09-29 | 2013-08-28 | 华为技术有限公司 | High frequency band signal coding and decoding methods and devices |
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| CN1462429A (en) * | 2001-05-08 | 2003-12-17 | 皇家菲利浦电子有限公司 | Audio coding |
| CN102859591A (en) * | 2010-04-12 | 2013-01-02 | 瑞典爱立信有限公司 | Method and arrangement for noise cancellation in a speech encoder |
| CN103368682A (en) * | 2012-03-29 | 2013-10-23 | 华为技术有限公司 | Signal coding and decoding method and equipment thereof |
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