CN105374363A - Audio signal encoding method and system - Google Patents
Audio signal encoding method and system Download PDFInfo
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- CN105374363A CN105374363A CN201410421971.3A CN201410421971A CN105374363A CN 105374363 A CN105374363 A CN 105374363A CN 201410421971 A CN201410421971 A CN 201410421971A CN 105374363 A CN105374363 A CN 105374363A
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Abstract
The invention discloses an audio signal encoding method. A terminal acquires mixed audio signals in the current operation environment in real time, the acquired mixed audio signals are analyzed, the efficiency of each audio signal in the mixed audio signals whose strength is larger than a preset threshold is extracted to serve as an effective efficiency, encoding frequencies, unmatched with the effective efficiency, in preset encoding frequencies are determined, the determined encoding frequencies serve as current encoding frequencies, and when an audio signal encoding instruction is received, the terminal adopts the current encoding frequencies to encode source data into audio signals. The invention also discloses an audio signal encoding system. Influences on to-be-transmitted audio signals by noise in the environment are reduced, and the high-audio signal transmission accuracy is improved.
Description
Technical field
The present invention relates to audio transmission field, particularly relate to audio signal encoding method and system.
Background technology
Along with the development of audio communication technology, increasing terminal (as air conditioner) adopts sound to come transformation parameter and steering order, other terminal picks up this parameter and steering order based on its sound pickup device, and correspondingly operate, as adjusted its operational factor based on the parameter of picking up and steering order.
But in prior art, when source data to be passed is encoded to sound signal, often by source data waiting for transmission according to preset frequency coding be sound signal, and based on audio playing apparatus by this audio signal transmission to target terminal, but because the rattle devices (as the compressor on air conditioner and blower fan) of terminal itself can produce noise in vibration processes, other rattle devices simultaneously in environment residing for this terminal also may produce rattle devices, interference is produced to the sound signal of transmission, causes audio signal transmission accuracy rate lower.
Summary of the invention
Fundamental purpose of the present invention is to solve the lower technical matters of audio signal transmission accuracy rate.
For achieving the above object, a kind of audio signal encoding method provided by the invention, described audio signal encoding method comprises the following steps:
Mixed audio signal in terminal Real-time Obtaining current operating environment, and the mixed audio signal got is resolved, to determine frequency and the intensity of each sound signal in described mixed audio signal;
Described terminal is extracted intensity in each sound signal and is greater than the audio signal frequency of predetermined threshold value as effective frequency;
Described terminal to determine in the coding frequency preset all unmatched coding frequency with described effective frequency, using the coding frequency determined as present encoding frequency;
When receiving audio-frequency signal coding instruction, described terminal adopts described present encoding frequency that source data is encoded to sound signal.
Preferably, described terminal to determine in the coding frequency preset all unmatched coding frequency with effective frequency, the step of the coding frequency determined as present encoding frequency is comprised:
It is interval that described terminal generates effective frequency corresponding to each effective frequency based on each effective frequency and default float value;
Default coding frequency and each effective frequency interval are compared by described terminal, to determine coding frequency all unmatched with effective frequency interval described in each;
Described terminal using the coding frequency determined as present encoding frequency.
Preferably, described terminal is extracted the audio signal frequency that intensity in each sound signal is greater than predetermined threshold value and is also comprised as effective frequency:
When the coding frequency preset all is mated with described effective frequency, described terminal exports information.
Preferably, described terminal to determine in the coding frequency preset all unmatched coding frequency with described effective frequency, the step of the coding frequency determined as present encoding frequency is comprised:
Described terminal to determine in the coding frequency preset all unmatched coding frequency with described effective frequency;
When having multiple with all unmatched coding frequency of described effective frequency, described terminal determines the priority of multiple coding frequency;
Described terminal using coding frequency the highest for priority as present encoding frequency.
Preferably, described terminal to determine in the coding frequency preset all unmatched coding frequency with described effective frequency, the step of the coding frequency determined as present encoding frequency is comprised:
Each coding frequency preset is compared with effective frequency described in each according to the priority preset by described terminal successively;
Have coding frequency with when described in each, effective frequency does not all mate, described terminal using this coding frequency as present encoding frequency.
Preferably, when receiving audio-frequency signal coding instruction, described terminal adopts before source data is encoded to the step of sound signal by described present encoding frequency, and described audio signal encoding method also comprises:
Described terminal obtains the intensity of the mixed audio signal received, and increases preset value to the intensity of mixed audio signal;
Described terminal adopts the intensity of the mixed audio signal increasing preset value to upgrade current audio signals encoding strength.
Preferably, described when receiving audio-frequency signal coding instruction, the step that described terminal adopts described present encoding frequency source data to be encoded to sound signal comprises:
When receiving audio-frequency signal coding instruction, described terminal adopts described present encoding frequency and current audio signals encoding strength that source data is encoded to sound signal.
In addition, for achieving the above object, the present invention also proposes a kind of audio signal encoding method, and described audio signal encoding method comprises:
When detecting audio-frequency signal coding instruction, terminal obtains source data to be encoded;
Described terminal is extracted intensity in each sound signal and is greater than the audio signal frequency of predetermined threshold value as effective frequency;
Described terminal to determine in the coding frequency preset all unmatched coding frequency with described effective frequency, using the coding frequency determined as present encoding frequency;
Described terminal adopts described present encoding frequency that described source data is encoded to sound signal.
In addition, for achieving the above object, the present invention also proposes a kind of audio-frequency signal coding system, and described audio-frequency signal coding system comprises:
Audio signal sample module, for obtaining the mixed audio signal in current operating environment;
Parsing module, for resolving the mixed audio signal got, to determine frequency and the intensity of each sound signal in described mixed audio signal;
Extraction module, is greater than the audio signal frequency of predetermined threshold value as effective frequency for extracting intensity in each sound signal;
Processing module, for determining coding frequency all unmatched with described effective frequency in the coding frequency preset, using the coding frequency determined as present encoding frequency;
Coding module, for when receiving audio-frequency signal coding instruction, adopts described present encoding frequency that source data is encoded to sound signal.
Preferably, described processing module comprises:
Generation unit, interval for generating effective frequency corresponding to each effective frequency based on each effective frequency and default float value;
Comparing unit, for default coding frequency and each effective frequency interval being compared, to determine coding frequency all unmatched with effective frequency interval described in each;
Processing unit, for the coding frequency that will determine as present encoding frequency.
Preferably, described audio-frequency signal coding system also comprises:
Output module, during for all mating with described effective frequency in the coding frequency preset, exports information.
Preferably, described processing module comprises:
Determining unit, for determining coding frequency all unmatched with described effective frequency in the coding frequency preset; And when having multiple with all unmatched coding frequency of described effective frequency, determine the priority of multiple coding frequency;
Processing unit, for using coding frequency the highest for priority as present encoding frequency.
Preferably, described processing module comprises:
Comparing unit, for comparing each coding frequency preset with effective frequency described in each successively according to the priority preset;
Processing unit, for having coding frequency with when effective frequency does not all mate described in each, using this coding frequency as present encoding frequency.
Preferably, described audio-frequency signal coding system also comprises:
Acquisition module, for obtaining the intensity of the mixed audio signal received;
Processing module also for increasing preset value to the intensity of mixed audio signal, and adopts the intensity of the mixed audio signal increasing preset value to upgrade current audio signals encoding strength.
Preferably, described coding module, also for when receiving audio-frequency signal coding instruction, adopts described present encoding frequency and current audio signals encoding strength that source data is encoded to sound signal.
In addition, for achieving the above object, the present invention also proposes a kind of audio-frequency signal coding system, and described audio-frequency signal coding system comprises:
Acquisition module, for when detecting audio-frequency signal coding instruction, obtains source data to be encoded;
Extraction module, is greater than the audio signal frequency of predetermined threshold value as effective frequency for extracting intensity in each sound signal;
Processing module, for determining coding frequency all unmatched with described effective frequency in the coding frequency preset, using the coding frequency determined as present encoding frequency;
Coding module, is encoded to sound signal for adopting described present encoding frequency by described source data.
The audio signal encoding method that the present invention proposes and system, mixed audio signal in terminal Real-time Obtaining current operating environment, and the mixed audio signal got is resolved, the audio signal frequency of predetermined threshold value is greater than as effective frequency to extract in mixed audio signal intensity in each sound signal, and to determine in the coding frequency preset all unmatched coding frequency with described effective frequency, using the coding frequency determined as present encoding frequency, when receiving audio-frequency signal coding instruction, described terminal adopts described present encoding frequency that source data is encoded to sound signal, to reduce noise in environment to the impact of sound signal waiting for transmission, improve the accuracy rate of audio signal transmission.
Accompanying drawing explanation
Fig. 1 is the hardware configuration schematic diagram that the present invention realizes the first embodiment of the terminal of audio-frequency signal coding;
Fig. 2 is the hardware configuration schematic diagram that the present invention realizes the second embodiment of the terminal of audio-frequency signal coding;
Fig. 3 is the high-level schematic functional block diagram of the preferred embodiment of Fig. 1 sound intermediate frequency signal coding system;
Fig. 4 is the high-level schematic functional block diagram of the preferred embodiment of Fig. 2 sound intermediate frequency signal coding system;
Fig. 5 is the schematic flow sheet of audio signal encoding method first embodiment of the present invention;
Fig. 6 is the schematic flow sheet of audio signal encoding method second embodiment of the present invention.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Reference Fig. 1, Fig. 1 are the hardware configuration schematic diagram that the present invention realizes the first embodiment of the terminal of audio-frequency signal coding.
This terminal 1 comprises processing unit 11, storage unit 12, coding unit 13, voice pickup unit 14 and audio-frequency signal coding system 15.This terminal can be controlled terminal and also can be control terminal.
Described coding unit 13, under the control of processing unit 11, is encoded to sound signal by source data to be encoded.
Described voice pickup unit 14, for picking up the sound signal in the running environment at place under the control of processing unit 11.
Storage unit 12, for stored audio signal coded system 15 and service data thereof, default coding frequency.It is emphasized that this storage unit 12 both can be an independent memory storage, also can be the general designation of multiple different memory storage, therefore not to repeat here.
This processing unit 11, for calling and performing audio-frequency signal coding system 15, control the mixed audio signal in voice pickup unit 14 Real-time Obtaining current operating environment, frequency and the intensity of determining each sound signal in described mixed audio signal are resolved to the mitigation sound signal got, to determine in the coding frequency preset all unmatched coding frequency with described effective frequency, using the coding frequency determined as present encoding frequency, when detecting audio-frequency signal coding instruction, calling coding unit 13 adopts described present encoding frequency that described source data is encoded to sound signal.This processing unit 11 can be both independent unit with storage unit 12 respectively, and also can integrate, form a controller, therefore not to repeat here.
Reference Fig. 2, Fig. 2 are the hardware configuration schematic diagram that the present invention realizes the second embodiment of the terminal of audio-frequency signal coding
This terminal 2 comprises processing unit 21, storage unit 22, coding unit 23, voice pickup unit 24 and audio-frequency signal coding system 25.
Described coding unit 23, under the control of processing unit 21, is encoded to sound signal by source data to be encoded.
Described voice pickup unit 24, for picking up the sound signal in the running environment at place under the control of processing unit 21.
Storage unit 22, for stored audio signal coded system 25 and service data thereof, default coding frequency.It is emphasized that this storage unit 22 both can be an independent memory storage, also can be the general designation of multiple different memory storage, therefore not to repeat here.
This processing unit 21, for calling and performing air conditioner operational factor adjustment System 25, when detecting audio-frequency signal coding instruction, terminal obtains source data to be encoded, and call voice pickup unit 24 and obtain mixed audio signal in current operating environment, and the mixed audio signal got is resolved, to determine frequency and the intensity of each sound signal in described mixed audio signal, extract intensity in each sound signal and be greater than the audio signal frequency of predetermined threshold value as effective frequency, extract the coding frequency preset that storage unit 22 stores, to determine in the coding frequency preset all unmatched coding frequency with described effective frequency, using the coding frequency determined as present encoding frequency, calling coding unit 23 adopts described present encoding frequency that described source data is encoded to sound signal.This processing unit 21 can be both independent unit with storage unit 22 respectively, and also can integrate, form a controller, therefore not to repeat here.
The invention provides a kind of audio-frequency signal coding system.
With reference to the high-level schematic functional block diagram that Fig. 3, Fig. 3 are the preferred embodiment of Fig. 1 sound intermediate frequency signal coding system.
It is emphasized that, to one skilled in the art, functional block diagram shown in Fig. 3 is only the exemplary plot of a preferred embodiment, and those skilled in the art, around the audio-frequency signal coding system 15 shown in Fig. 3, can carry out supplementing of new functional module easily; The title of each functional module is self-defined title, only for auxiliary each program function block understanding this audio-frequency signal coding system 15, be not used in and limit technical scheme of the present invention, the core of technical solution of the present invention is, the function that the functional module of respective define name will be reached.
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, this audio collecting device can in real time or the mixed audio signal that collects of timing acquisition audio collecting device (as microphone).
Parsing module 152, for resolving the mixed audio signal got, to determine frequency and the intensity of each sound signal in described mixed audio signal;
In the present embodiment, Fourier transform is carried out to the mixed audio signal received, the time-domain signal of sound signal is converted to frequency-region signal, the frequency of each sound signal comprised in this mixed audio signal can be determined based on this frequency-region signal, and obtaining the amplitude of the sound signal of each frequency, this amplitude got is the intensity of sound signal.
Extraction module 153, is greater than the audio signal frequency of predetermined threshold value as effective frequency for extracting intensity in each sound signal;
In the present embodiment, the intensity of this sound signal can be arranged by manufacturer or user, because the intensity of noise signal is when less, the accuracy rate of the audio signal transmission that terminal exports may not be affected, then extract intensity in each sound signal and be greater than the audio signal frequency of predetermined threshold value as effective frequency.
Processing module 154, for determining coding frequency all unmatched with described effective frequency in the coding frequency preset, using the coding frequency determined as present encoding frequency;
In the present embodiment, the coding frequency preset is mated with effective frequency and is referred to that the difference between default coding frequency and effective frequency is less than predetermined threshold value, and namely described processing module 154 comprises:
Generation unit, interval for generating effective frequency corresponding to each effective frequency based on each effective frequency and default float value;
Comparing unit, for default coding frequency and each effective frequency interval being compared, to determine coding frequency all unmatched with effective frequency interval described in each;
Processing unit, for the coding frequency that will determine as present encoding frequency.
By above-mentioned alignments, make the determination of present encoding frequency more accurate.
Coding module 155, for when receiving audio-frequency signal coding instruction, adopts described present encoding frequency that source data is encoded to sound signal.
That this source data can be current input or prestore data, type can comprise lteral data or voice data etc.When Word message is encoded to sound signal, Word message first can be converted to voice data, and be sound signal by the audio data coding be converted to.
The audio-frequency signal coding system that the present embodiment proposes, mixed audio signal in audio signal sample module Real-time Obtaining current operating environment, parsing module is resolved the mixed audio signal got, the audio signal frequency of predetermined threshold value is greater than as effective frequency to extract in mixed audio signal intensity in each sound signal, processing module to determine in the coding frequency preset all unmatched coding frequency with described effective frequency, and using the coding frequency determined as present encoding frequency, when receiving audio-frequency signal coding instruction, coding module adopts described present encoding frequency that source data is encoded to sound signal, to reduce noise in environment to the impact of sound signal waiting for transmission, improve the accuracy rate of audio signal transmission.
Further, for improving Consumer's Experience, described audio-frequency signal coding system also comprises:
Output module, during for all mating with described effective frequency in the coding frequency preset, exports information.
In the present embodiment, this information can be light information and/or auditory tone cues information and/or Word message.When cue is light information, export this light information can be control pilot lamp switch to default color, or control pilot lamp with the frequency scintillation preset, or light pilot lamp etc., auditory tone cues information can be control loudspeaker and exports the alarm signal preset.User, based on above-mentioned information, can know the current operation being not suitable for carrying out sound signal output in time.
It will be appreciated by persons skilled in the art that as improving user experience, when the coding frequency preset all is mated with described effective frequency, the coding frequency that the employing effective frequency minimum with intensity in each effective frequency mates is as present encoding frequency.
Further, for improving the accuracy to audio-frequency signal coding, described processing module 154 comprises:
Determining unit, for determining coding frequency all unmatched with described effective frequency in the coding frequency preset; And when having multiple with all unmatched coding frequency of described effective frequency, determine the priority of multiple coding frequency;
Processing unit, for using coding frequency the highest for priority as present encoding frequency.
Concrete example is as follows: pre-arranged code frequency is 12KHZ, 14KHZ, 16KHZ and 18KHZ, the audio frequency be currently received relaxes the sound signal comprising 12KHZ and 14KHZ in sound signal, and the priority of 16KHZ is greater than 18KHZ, therefore select the higher 16KHZ of priority as present encoding frequency.The priority of each coding frequency can by for setting.
Further, for reducing comparison number of times, to reduce terminal energy consumption, described processing module 154 comprises:
Comparing unit, for comparing each coding frequency preset with effective frequency described in each successively according to the priority preset;
Processing unit, for having coding frequency with when effective frequency does not all mate described in each, using this coding frequency as present encoding frequency.
Concrete example is as follows: pre-arranged code frequency is 12KHZ, 14KHZ, 16KHZ and 18KHZ according to prioritization, in the audio frequency mitigation sound signal be currently received, intensity is greater than the sound signal of predetermined threshold value is the sound signal of 12KHZ and 14KHZ, then first 12KHZ and 12KHZ and 14KHZ is compared, owing to there is the effective frequency with this coding frequency matching, 14KHZ and 12KHZ and 14KHZ is then continued to compare, until 16KHZ and 12KHZ and 14KHZ does not all mate, now using 16KHZ as present encoding frequency.The priority of each coding frequency can by for setting.
Further, for reducing terminal energy consumption, stating audio-frequency signal coding system and also comprising:
Acquisition module, for obtaining the intensity of the mixed audio signal received;
Processing module also for increasing preset value to the intensity of mixed audio signal, and adopts the intensity of the mixed audio signal increasing preset value to upgrade current audio signals encoding strength.
In the present embodiment, described coding module, also for when receiving audio-frequency signal coding instruction, adopts described present encoding frequency and current audio signals encoding strength that source data is encoded to sound signal.
For avoiding all sound signals all to adopt maximum intensity to encode, making terminal energy consumption comparatively large, then only needing the intensity adjustment of sound signal present encoding generated to the intensity being greater than current noise signal.This preset value can be set by user.
With reference to the high-level schematic functional block diagram that Fig. 4, Fig. 4 are the preferred embodiment of Fig. 2 sound intermediate frequency signal coding system.
It is emphasized that, to one skilled in the art, functional block diagram shown in Fig. 4 is only the exemplary plot of a preferred embodiment, and those skilled in the art, around the audio-frequency signal coding system 25 shown in Fig. 4, can carry out supplementing of new functional module easily; The title of each functional module is self-defined title, only for auxiliary each program function block understanding this audio-frequency signal coding system 25, be not used in and limit technical scheme of the present invention, the core of technical solution of the present invention is, the function that the functional module of respective define name will be reached.
The audio-frequency signal coding system 25 that the present embodiment proposes, comprising:
Acquisition module 251, for when detecting audio-frequency signal coding instruction, obtains source data to be encoded, and obtains 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 signal of sound signal is converted to frequency-region signal, the frequency of each sound signal comprised in this mixed audio signal can be determined based on this frequency-region signal, and obtaining the amplitude of the sound signal of each frequency, this amplitude got is the intensity of sound signal.
Parsing module 252, for resolving the mixed audio signal got, to determine frequency and the intensity of each sound signal in described mixed audio signal
Extraction module 253, is greater than the audio signal frequency of predetermined threshold value as effective frequency for extracting intensity in each sound signal;
In the present embodiment, the intensity of this sound signal can be arranged by manufacturer or user, because the intensity of noise signal is when less, the accuracy rate of the audio signal transmission that terminal exports may not be affected, then extract intensity in each sound signal and be greater than the audio signal frequency of predetermined threshold value as effective frequency.
Processing module 254, for determining coding frequency all unmatched with described effective frequency in the coding frequency preset, using the coding frequency determined as present encoding frequency;
In the present embodiment, the coding frequency preset is mated with effective frequency and is referred to that the difference between default coding frequency and effective frequency is less than predetermined threshold value, and namely described processing module 254 comprises:
Generation unit, interval for generating effective frequency corresponding to each effective frequency based on each effective frequency and default float value;
Comparing unit, for default coding frequency and each effective frequency interval being compared, to determine coding frequency all unmatched with effective frequency interval described in each;
Processing unit, for the coding frequency that will determine as present encoding frequency.
By above-mentioned alignments, make the determination of present encoding frequency more accurate.
Coding module 255, is encoded to sound signal for adopting described present encoding frequency by described source data.
That this source data can be current input or prestore data, type can comprise lteral data or voice data etc.When Word message is encoded to sound signal, Word message first can be converted to voice data, and be sound signal by the audio data coding be converted to.
The audio-frequency signal coding system that the present embodiment proposes, when detecting audio-frequency signal coding instruction, acquisition module obtains the mixed audio signal in source data to be encoded and current operating environment, parsing module is resolved the mixed audio signal got, to determine frequency and the intensity of each sound signal in described mixed audio signal; Extraction module extracts intensity in each sound signal and is greater than the audio signal frequency of predetermined threshold value as effective frequency; Processing module to determine in the coding frequency preset all unmatched coding frequency with described effective frequency, and using the coding frequency determined as present encoding frequency; Coding module adopts described present encoding frequency that described source data is encoded to sound signal, to reduce noise in environment to the impact of sound signal waiting for transmission, improves the accuracy rate of audio signal transmission.
Further, for improving Consumer's Experience, described audio-frequency signal coding system also comprises:
Output module, during for all mating with described effective frequency in the coding frequency preset, exports information.
In the present embodiment, this information can be light information and/or auditory tone cues information and/or Word message.When cue is light information, export this light information can be control pilot lamp switch to default color, or control pilot lamp with the frequency scintillation preset, or light pilot lamp etc., auditory tone cues information can be control loudspeaker and exports the alarm signal preset.User, based on above-mentioned information, can know the current operation being not suitable for carrying out sound signal output in time.
It will be appreciated by persons skilled in the art that as improving user experience, when the coding frequency preset all is mated with described effective frequency, the coding frequency that the employing effective frequency minimum with intensity in each effective frequency mates is as present encoding frequency.
Further, for improving the accuracy to audio-frequency signal coding, described processing module 254 comprises:
Determining unit, for determining coding frequency all unmatched with described effective frequency in the coding frequency preset; And when having multiple with all unmatched coding frequency of described effective frequency, determine the priority of multiple coding frequency;
Processing unit, for using coding frequency the highest for priority as present encoding frequency.
Concrete example is as follows: pre-arranged code frequency is 12KHZ, 14KHZ, 16KHZ and 18KHZ, the audio frequency be currently received relaxes the sound signal comprising 12KHZ and 14KHZ in sound signal, and the priority of 16KHZ is greater than 18KHZ, therefore select the higher 16KHZ of priority as present encoding frequency.The priority of each coding frequency can by for setting.
Further, for reducing comparison number of times, to reduce terminal energy consumption, described processing module 254 comprises:
Comparing unit, for comparing each coding frequency preset with effective frequency described in each successively according to the priority preset;
Processing unit, for having coding frequency with when effective frequency does not all mate described in each, using this coding frequency as present encoding frequency.
Concrete example is as follows: pre-arranged code frequency is 12KHZ, 14KHZ, 16KHZ and 18KHZ according to prioritization, in the audio frequency mitigation sound signal be currently received, intensity is greater than the sound signal of predetermined threshold value is the sound signal of 12KHZ and 14KHZ, then first 12KHZ and 12KHZ and 14KHZ is compared, owing to there is the effective frequency with this coding frequency matching, 14KHZ and 12KHZ and 14KHZ is then continued to compare, until 16KHZ and 12KHZ and 14KHZ does not all mate, now using 16KHZ as present encoding frequency.The priority of each coding frequency can by for setting.
Further, for reducing terminal energy consumption, stating audio-frequency signal coding system and also comprising:
Acquisition module, for obtaining the intensity of the mixed audio signal received;
Processing module also for increasing preset value to the intensity of mixed audio signal, and adopts the intensity of the mixed audio signal increasing preset value to upgrade current audio signals encoding strength.
In the present embodiment, described coding module, also for when receiving audio-frequency signal coding instruction, adopts described present encoding frequency and current audio signals encoding strength that source data is encoded to sound signal.
For avoiding all sound signals all to adopt maximum intensity to encode, making terminal energy consumption comparatively large, then only needing the intensity adjustment of sound signal present encoding generated to the intensity being greater than current noise signal.This preset value can be set by user.
With reference to the schematic flow sheet that Fig. 5, Fig. 5 are audio signal encoding method first embodiment of the present invention.
The audio signal encoding method that the present embodiment proposes, comprises the following steps:
Step S10, the mixed audio signal of terminal in real time or in timing acquisition current operating environment, and the mixed audio signal got is resolved, to determine frequency and the intensity of each sound signal in described mixed audio signal;
In this in real time example, this audio collecting device can in real time or the mixed audio signal that collects of timing acquisition audio collecting device (as microphone).In the present embodiment, Fourier transform is carried out to the mixed audio signal received, the time-domain signal of sound signal is converted to frequency-region signal, the frequency of each sound signal comprised in this mixed audio signal can be determined based on this frequency-region signal, and obtaining the amplitude of the sound signal of each frequency, this amplitude got is the intensity of sound signal.
Step S20, described terminal is extracted intensity in each sound signal and is greater than the audio signal frequency of predetermined threshold value as effective frequency;
In the present embodiment, the intensity of this sound signal can be arranged by manufacturer or user, because the intensity of noise signal is when less, the accuracy rate of the audio signal transmission that terminal exports may not be affected, then extract intensity in each sound signal and be greater than the audio signal frequency of predetermined threshold value as effective frequency.
Step S30, described terminal to determine in the coding frequency preset all unmatched coding frequency with described effective frequency, using the coding frequency determined as present encoding frequency;
In the present embodiment, the coding frequency preset is mated with effective frequency and is referred to that the difference between default coding frequency and effective frequency is less than predetermined threshold value, and namely described step S30 comprises:
It is interval that described terminal generates effective frequency corresponding to each effective frequency based on each effective frequency and default float value;
Default coding frequency and each effective frequency interval are compared by described terminal, to determine coding frequency all unmatched with effective frequency interval described in each;
Described terminal using the coding frequency determined as present encoding frequency.
By above-mentioned alignments, make the determination of present encoding frequency more accurate.
Step S40, when receiving audio-frequency signal coding instruction, described terminal adopts described present encoding frequency that source data is encoded to sound signal.
That this source data can be current input or prestore data, type can comprise lteral data or voice data etc.When Word message is encoded to sound signal, Word message first can be converted to voice data, and be sound signal by the audio data coding be converted to.
The audio signal encoding method that the present embodiment proposes, mixed audio signal in terminal Real-time Obtaining current operating environment, and the mixed audio signal got is resolved, the audio signal frequency of predetermined threshold value is greater than as effective frequency to extract in mixed audio signal intensity in each sound signal, and to determine in the coding frequency preset all unmatched coding frequency with described effective frequency, using the coding frequency determined as present encoding frequency, when receiving audio-frequency signal coding instruction, described terminal adopts described present encoding frequency that source data is encoded to sound signal, to reduce noise in environment to the impact of sound signal waiting for transmission, improve the accuracy rate of audio signal transmission.
Further, for improving Consumer's Experience, after described step S20, described audio signal encoding method also comprises:
When the coding frequency preset all is mated with described effective frequency, described terminal exports information
In the present embodiment, this information can be light information and/or auditory tone cues information and/or Word message.When cue is light information, export this light information can be control pilot lamp switch to default color, or control pilot lamp with the frequency scintillation preset, or light pilot lamp etc., auditory tone cues information can be control loudspeaker and exports the alarm signal preset.User, based on above-mentioned information, can know the current operation being not suitable for carrying out sound signal output in time.
It will be appreciated by persons skilled in the art that as improving user experience, when the coding frequency preset all is mated with described effective frequency, the coding frequency that the employing effective frequency minimum with intensity in each effective frequency mates is as present encoding frequency.
Further, for improving the accuracy to audio-frequency signal coding, described step S30 comprises:
Described terminal to determine in the coding frequency preset all unmatched coding frequency with described effective frequency;
When having multiple with all unmatched coding frequency of described effective frequency, described terminal determines the priority of multiple coding frequency;
Described terminal using coding frequency the highest for priority as present encoding frequency.
Concrete example is as follows: pre-arranged code frequency is 12KHZ, 14KHZ, 16KHZ and 18KHZ, the audio frequency be currently received relaxes the sound signal comprising 12KHZ and 14KHZ in sound signal, and the priority of 16KHZ is greater than 18KHZ, therefore select the higher 16KHZ of priority as present encoding frequency.The priority of each coding frequency can by for setting.
Further, for reducing comparison number of times, to reduce terminal energy consumption, described processing module 154 comprises:
Each coding frequency preset is compared with effective frequency described in each according to the priority preset by described terminal successively;
Have coding frequency with when described in each, effective frequency does not all mate, described terminal using this coding frequency as present encoding frequency.
Concrete example is as follows: pre-arranged code frequency is 12KHZ, 14KHZ, 16KHZ and 18KHZ according to prioritization, in the audio frequency mitigation sound signal be currently received, intensity is greater than the sound signal of predetermined threshold value is the sound signal of 12KHZ and 14KHZ, then first 12KHZ and 12KHZ and 14KHZ is compared, owing to there is the effective frequency with this coding frequency matching, 14KHZ and 12KHZ and 14KHZ is then continued to compare, until 16KHZ and 12KHZ and 14KHZ does not all mate, now using 16KHZ as present encoding frequency.The priority of each coding frequency can by for setting.
Further, for reducing terminal energy consumption, before described step S40, described audio signal encoding method also comprises:
Described terminal obtains the intensity of the mixed audio signal received, and increases preset value to the intensity of mixed audio signal;
Described terminal adopts the intensity of the mixed audio signal increasing preset value to upgrade current audio signals encoding strength.
In the present embodiment, described step S40 comprises: when receiving audio-frequency signal coding instruction, and described terminal adopts described present encoding frequency and current audio signals encoding strength that source data is encoded to sound signal.
For avoiding all sound signals all to adopt maximum intensity to encode, making terminal energy consumption comparatively large, then only needing the intensity adjustment of sound signal present encoding generated to the intensity being greater than current noise signal.This preset value can be set by user.
With reference to the schematic flow sheet that Fig. 6, Fig. 6 are audio signal encoding method second embodiment of the present invention.
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, described terminal obtains the mixed audio signal in current operating environment, and resolves the mixed audio signal got, to determine frequency and the intensity of each sound signal in described mixed audio signal;
In the present embodiment, Fourier transform is carried out to the mixed audio signal received, the time-domain signal of sound signal is converted to frequency-region signal, the frequency of each sound signal comprised in this mixed audio signal can be determined based on this frequency-region signal, and obtaining the amplitude of the sound signal of each frequency, this amplitude got is the intensity of sound signal.
Step S70, described terminal is extracted intensity in each sound signal and is greater than the audio signal frequency of predetermined threshold value as effective frequency;
In the present embodiment, the intensity of this sound signal can be arranged by manufacturer or user, because the intensity of noise signal is when less, the accuracy rate of the audio signal transmission that terminal exports may not be affected, then extract intensity in each sound signal and be greater than the audio signal frequency of predetermined threshold value as effective frequency.
Step S80, described terminal to determine in the coding frequency preset all unmatched coding frequency with described effective frequency, using the coding frequency determined as present encoding frequency;
In the present embodiment, the coding frequency preset is mated with effective frequency and is referred to that the difference between default coding frequency and effective frequency is less than predetermined threshold value, and namely described step S80 comprises:
It is interval that described terminal generates effective frequency corresponding to each effective frequency based on each effective frequency and default float value;
Default coding frequency and each effective frequency interval are compared by described terminal, to determine coding frequency all unmatched with effective frequency interval described in each, and using the coding frequency determined as present encoding frequency.
By above-mentioned alignments, make the determination of present encoding frequency more accurate.
Step S90, described terminal adopts described present encoding frequency that described source data is encoded to sound signal.
That this source data can be current input or prestore data, type can comprise lteral data or voice data etc.When Word message is encoded to sound signal, Word message first can be converted to voice data, and be sound signal by the audio data coding be converted to.
The audio signal encoding method that the present embodiment proposes, when detecting audio-frequency signal coding instruction, described terminal obtains the mixed audio signal in source data to be encoded and current operating environment, and the mixed audio signal got is resolved, to determine frequency and the intensity of each sound signal in described mixed audio signal; Described terminal is extracted intensity in each sound signal and is greater than the audio signal frequency of predetermined threshold value as effective frequency, and to determine in the coding frequency preset all unmatched coding frequency with described effective frequency, using the coding frequency determined as present encoding frequency; Described terminal adopts described present encoding frequency that described source data is encoded to sound signal, to reduce noise in environment to the impact of sound signal waiting for transmission, improves the accuracy rate of audio signal transmission.
Further, for improving Consumer's Experience, after described step S70, described audio signal encoding method also comprises:
When the coding frequency preset all is mated with described effective frequency, described terminal exports information.
In the present embodiment, this information can be light information and/or auditory tone cues information and/or Word message.When cue is light information, export this light information can be control pilot lamp switch to default color, or control pilot lamp with the frequency scintillation preset, or light pilot lamp etc., auditory tone cues information can be control loudspeaker and exports the alarm signal preset.User, based on above-mentioned information, can know the current operation being not suitable for carrying out sound signal output in time.
It will be appreciated by persons skilled in the art that as improving user experience, when the coding frequency preset all is mated with described effective frequency, the coding frequency that the employing effective frequency minimum with intensity in each effective frequency mates is as present encoding frequency.
Further, for improving the accuracy to audio-frequency signal coding, described step S80 comprises:
Described terminal to determine in the coding frequency preset all unmatched coding frequency with described effective frequency;
When having multiple with all unmatched coding frequency of described effective frequency, described terminal determines the priority of multiple coding frequency, and using coding frequency the highest for priority as present encoding frequency.
Concrete example is as follows: pre-arranged code frequency is 12KHZ, 14KHZ, 16KHZ and 18KHZ, the audio frequency be currently received relaxes the sound signal comprising 12KHZ and 14KHZ in sound signal, and the priority of 16KHZ is greater than 18KHZ, therefore select the higher 16KHZ of priority as present encoding frequency.The priority of each coding frequency can by for setting.
Further, for reducing comparison number of times, to reduce terminal energy consumption, described step S80 comprises:
Each coding frequency preset is compared with effective frequency described in each according to the priority preset by described terminal successively;
Have coding frequency with when described in each, effective frequency does not all mate, described terminal using this coding frequency as present encoding frequency.
Concrete example is as follows: pre-arranged code frequency is 12KHZ, 14KHZ, 16KHZ and 18KHZ according to prioritization, in the audio frequency mitigation sound signal be currently received, intensity is greater than the sound signal of predetermined threshold value is the sound signal of 12KHZ and 14KHZ, then first 12KHZ and 12KHZ and 14KHZ is compared, owing to there is the effective frequency with this coding frequency matching, 14KHZ and 12KHZ and 14KHZ is then continued to compare, until 16KHZ and 12KHZ and 14KHZ does not all mate, now using 16KHZ as present encoding frequency.The priority of each coding frequency can by for setting.
Further, for reducing terminal energy consumption, before described step S90, described audio signal encoding method also comprises:
Described terminal obtains the intensity of the mixed audio signal received;
Described terminal increases preset value to the intensity of mixed audio signal, and adopts the intensity of the mixed audio signal increasing preset value to upgrade current audio signals encoding strength.
In the present embodiment, described step S90 comprises: when receiving audio-frequency signal coding instruction, and described terminal adopts described present encoding frequency and current audio signals encoding strength that source data is encoded to sound signal.
For avoiding all sound signals all to adopt maximum intensity to encode, making terminal energy consumption comparatively large, then only needing the intensity adjustment of sound signal present encoding generated to the intensity being greater than current noise signal.This preset value can be set by user.
It should be noted that, in this article, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or system and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or system.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the system comprising this key element and also there is other identical element.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
Through the above description of the embodiments, those skilled in the art can be well understood to the mode that above-described embodiment method can add required general hardware platform by software and realize, hardware can certainly be passed through, but in a lot of situation, the former is better embodiment.Based on such understanding, technical scheme of the present invention can embody with the form of software product the part that prior art contributes in essence in other words, this computer software product is stored in a storage medium (as ROM/RAM, magnetic disc, CD), comprising some instructions in order to make a station terminal equipment (can be mobile phone, computing machine, server, air conditioner, or the network equipment etc.) perform method described in each embodiment of the present invention.
These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize instructions of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (16)
1. an audio signal encoding method, is characterized in that, described audio signal encoding method comprises the following steps:
The mixed audio signal of terminal in real time or in timing acquisition current operating environment, and the mixed audio signal got is resolved, to determine frequency and the intensity of each sound signal in described mixed audio signal;
Described terminal is extracted intensity in each sound signal and is greater than the audio signal frequency of predetermined threshold value as effective frequency;
Described terminal to determine in the coding frequency preset all unmatched coding frequency with described effective frequency, using the coding frequency determined as present encoding frequency;
When receiving audio-frequency signal coding instruction, described terminal adopts described present encoding frequency that source data is encoded to sound signal.
2. audio signal encoding method as claimed in claim 1, is characterized in that, described terminal to determine in the coding frequency preset all unmatched coding frequency with effective frequency, the step of the coding frequency determined as present encoding frequency is comprised:
It is interval that described terminal generates effective frequency corresponding to each effective frequency based on each effective frequency and default float value;
Default coding frequency and each effective frequency interval are compared by described terminal, to determine coding frequency all unmatched with effective frequency interval described in each;
Described terminal using the coding frequency determined as present encoding frequency.
3. audio signal encoding method as claimed in claim 1, is characterized in that, after described terminal extracts audio signal frequency that intensity in each sound signal the is greater than predetermined threshold value step as effective frequency, described audio signal encoding method also comprises:
When the coding frequency preset all is mated with described effective frequency, described terminal exports information.
4. audio signal encoding method as claimed in claim 1, is characterized in that, described terminal to determine in the coding frequency preset all unmatched coding frequency with described effective frequency, the step of the coding frequency determined as present encoding frequency is comprised:
Described terminal to determine in the coding frequency preset all unmatched coding frequency with described effective frequency;
When having multiple with all unmatched coding frequency of described effective frequency, described terminal determines the priority of multiple coding frequency;
Described terminal using coding frequency the highest for priority as present encoding frequency.
5. audio signal encoding method as claimed in claim 1, is characterized in that, described terminal to determine in the coding frequency preset all unmatched coding frequency with described effective frequency, the step of the coding frequency determined as present encoding frequency is comprised:
Each coding frequency preset is compared with effective frequency described in each according to the priority preset by described terminal successively;
Have coding frequency with when described in each, effective frequency does not all mate, described terminal using this coding frequency as present encoding frequency.
6. the audio signal encoding method as described in any one of claim 1-5, it is characterized in that, when receiving audio-frequency signal coding instruction, described terminal adopts before source data is encoded to the step of sound signal by described present encoding frequency, and described audio signal encoding method also comprises:
Described terminal obtains the intensity of the mixed audio signal received, and increases preset value to the intensity of mixed audio signal;
Described terminal adopts the intensity of the mixed audio signal increasing preset value to upgrade current audio signals encoding strength.
7. audio signal encoding method as claimed in claim 6, it is characterized in that, described when receiving audio-frequency signal coding instruction, the step that described terminal adopts described present encoding frequency source data to be encoded to sound signal comprises:
When receiving audio-frequency signal coding instruction, described terminal adopts described present encoding frequency and current audio signals encoding strength that source data is encoded to sound signal.
8. an audio signal encoding method, is characterized in that, described audio signal encoding method comprises:
When detecting audio-frequency signal coding instruction, terminal obtains source data to be encoded;
Described terminal obtains the mixed audio signal in current operating environment, and resolves the mixed audio signal got, to determine frequency and the intensity of each sound signal in described mixed audio signal;
Described terminal is extracted intensity in each sound signal and is greater than the audio signal frequency of predetermined threshold value as effective frequency;
Described terminal to determine in the coding frequency preset all unmatched coding frequency with described effective frequency, using the coding frequency determined as present encoding frequency;
Described terminal adopts described present encoding frequency that described source data is encoded to sound signal.
9. an audio-frequency signal coding system, is characterized in that, described audio-frequency signal coding system comprises:
Audio signal sample module, for the mixed audio signal in real-time or timing acquisition current operating environment;
Parsing module, for resolving the mixed audio signal got, to determine frequency and the intensity of each sound signal in described mixed audio signal;
Extraction module, is greater than the audio signal frequency of predetermined threshold value as effective frequency for extracting intensity in each sound signal;
Processing module, for determining coding frequency all unmatched with described effective frequency in the coding frequency preset, using the coding frequency determined as present encoding frequency;
Coding module, for when receiving audio-frequency signal coding instruction, adopts described present encoding frequency that source data is encoded to sound signal.
10. audio-frequency signal coding system as claimed in claim 9, it is characterized in that, described processing module comprises:
Generation unit, interval for generating effective frequency corresponding to each effective frequency based on each effective frequency and default float value;
Comparing unit, for default coding frequency and each effective frequency interval being compared, to determine coding frequency all unmatched with effective frequency interval described in each;
Processing unit, for the coding frequency that will determine as present encoding frequency.
11. audio-frequency signal coding systems as claimed in claim 9, it is characterized in that, described audio-frequency signal coding system also comprises:
Output module, during for all mating with described effective frequency in the coding frequency preset, exports information.
12. audio-frequency signal coding systems as claimed in claim 9, it is characterized in that, described processing module comprises:
Determining unit, for determining coding frequency all unmatched with described effective frequency in the coding frequency preset; And when having multiple with all unmatched coding frequency of described effective frequency, determine the priority of multiple coding frequency;
Processing unit, for using coding frequency the highest for priority as present encoding frequency.
13. audio-frequency signal coding systems as claimed in claim 9, it is characterized in that, described processing module comprises:
Comparing unit, for comparing each coding frequency preset with effective frequency described in each successively according to the priority preset;
Processing unit, for having coding frequency with when effective frequency does not all mate described in each, using this coding frequency as present encoding frequency.
14. audio-frequency signal coding systems as described in any one of claim 9-13, it is characterized in that, described audio-frequency signal coding system also comprises:
Acquisition module, for obtaining the intensity of the mixed audio signal received;
Processing module also for increasing preset value to the intensity of mixed audio signal, and adopts the intensity of the mixed audio signal increasing preset value to upgrade current audio signals encoding strength.
15. want the audio-frequency signal coding system as described in 14 as right, it is characterized in that, described coding module, also for when receiving audio-frequency signal coding instruction, adopts described present encoding frequency and current audio signals encoding strength that source data is encoded to sound signal.
16. 1 kinds of audio-frequency signal coding systems, is characterized in that, described audio-frequency signal coding system comprises:
Acquisition module, for when detecting audio-frequency signal coding instruction, obtains source data to be encoded, and obtains the mixed audio signal in current operating environment;
Parsing module, for resolving the mixed audio signal got, to determine frequency and the intensity of each sound signal in described mixed audio signal
Extraction module, is greater than the audio signal frequency of predetermined threshold value as effective frequency for extracting intensity in each sound signal;
Processing module, for determining coding frequency all unmatched with described effective frequency in the coding frequency preset, using the coding frequency determined as present encoding frequency;
Coding module, is encoded to sound signal for adopting described present encoding frequency by described source data.
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