CN102800324A - Audio processing system and method for mobile terminals - Google Patents
Audio processing system and method for mobile terminals Download PDFInfo
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- CN102800324A CN102800324A CN2012102702531A CN201210270253A CN102800324A CN 102800324 A CN102800324 A CN 102800324A CN 2012102702531 A CN2012102702531 A CN 2012102702531A CN 201210270253 A CN201210270253 A CN 201210270253A CN 102800324 A CN102800324 A CN 102800324A
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Abstract
The invention discloses an audio processing system and method for mobile terminals. The system comprises a first processing module, a judgment module and a second processing module, wherein the first processing module is used for carrying out low-frequency cutting operation on a received audio signal; the judgment module is used for making judgment according to the sound intensity of the audio signal, wherein the audio signal is judged as an effective signal if the sound intensity of the audio signal is greater than a preset threshold, and the audio signal is judged as ineffective signal if the sound intensity of the audio signal is lower than the preset threshold; and the second processing module is used for enhancing the volume of the effective signal according to a preset proportion and decreasing the volume of the ineffective signal according to a preset proportion or completely cutting the ineffective signal. According to the invention, the tone quality of records can be effectively improved, and tones become clear and full.
Description
Technical field
The present invention relates to technical field of mobile terminals, relate in particular to a kind of audio frequency processing system and method that is used for portable terminal.
Background technology
Along with the continuous development of portable terminals such as mobile phone technology, cell-phone function is more and more abundanter.At present, most of mobile phones all have sound-recording function.
According to prior art, mobile phone mainly is a sound-recording function of realizing mobile phone through combination of circuits such as audio collection circuit (microphone), audio amplifier circuit, analog to digital converters.
During the recording of the mobile phone of carrying in use, generally all be in the noisy playback environ-ment, will a large amount of invalid voice signals such as voice signal and ground unrest are arranged together be recorded in the mobile phone like this, this has caused influencing the recording effect of mobile phone.
Ground unrest roughly can be divided into periodic noise, impulsive noise, broadband noise.Periodic noise is mainly derived from machinery, the electrical Interference, particularly hum of periodic rotary; Impulsive noise derives from blast, bump and discharge etc.; The source of broadband noise has: thermonoise, pneumatic noise and various random noise source.
To sum up, mobile phone recording meeting is together recorded useful signal and invalid background noise in the prior art, has influenced recording quality, therefore is necessary to propose improved technological means and addresses the above problem.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of audio frequency processing system and method that is used for portable terminal, to solve the bad problem of mobile phone recording effect that prior art exists, wherein:
The audio frequency processing system that is used for portable terminal according to the embodiment of the invention comprises:
First processing module is used for that the sound signal that receives is carried out low cut and handles; Judge module is used for judging according to the intensity of sound of sound signal, and intensity of sound is a useful signal greater than the sound signal of predetermined threshold value, otherwise is invalid signals; Second processing module is used for the volume according to predetermined ratio lifting useful signal, and reduces the volume of invalid signals or excise invalid signals fully according to predetermined ratio.
Wherein, this system also comprises: memory module is used to preserve the sound signal of handling through second processing module.
Wherein, the intensity of sound according to the sound signal of importing is provided with threshold value.
Wherein, first processing module is a wave filter.
Wherein, second processing module is a compressor reducer.
Audio-frequency processing method according to the portable terminal of the embodiment of the invention comprises: the sound signal that receives is carried out low cut handle; Intensity of sound according to sound signal judges that intensity of sound is a useful signal greater than the sound signal of predetermined threshold value, otherwise is invalid signals; Promote the volume of useful signal according to predetermined ratio, and reduce the volume of invalid signals or excise invalid signals fully according to predetermined ratio.
Wherein, this method also comprises: preserve treated sound signal.
Wherein, the intensity of sound according to the sound signal of importing is provided with threshold value.
Wherein, through wave filter the sound signal that receives being carried out low cut handles.
Wherein, promote the volume of useful signal according to predetermined ratio, and reduce the volume of invalid signals or excise invalid signals fully according to predetermined ratio through compressor reducer.
According to technical scheme of the present invention; After through first processing module (wave filter) and second processing module (compressor reducer) the external sound signal of gathering being handled respectively; The Signal-to-Noise that obtains obviously improves; It is clear full that tonequality can become, and effectively improved recording tonequality, satisfied user's request for utilization.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the structured flowchart according to the audio frequency processing system of the embodiment of the invention;
Fig. 2 is the process flow diagram according to the audio-frequency processing method of the embodiment of the invention.
Embodiment
Main thought of the present invention is that first processing module is carried out low cut to the sound signal that receives and handled; Judge module judges that according to the intensity of sound of sound signal intensity of sound is a useful signal greater than the sound signal of predetermined threshold value, otherwise is invalid signals; Second processing module promotes the volume of said useful signal according to predetermined ratio, and reduces the volume of said invalid signals or excise said invalid signals fully according to predetermined ratio.
For making the object of the invention, technical scheme and advantage clearer,, the present invention is done to specify further below in conjunction with accompanying drawing and specific embodiment.
According to embodiments of the invention, a kind of audio frequency processing system that is used for portable terminal is provided.
Fig. 1 is the structured flowchart according to the audio frequency processing system that is used for portable terminal of the embodiment of the invention, and is as shown in Figure 1, and this system comprises: first processing module 10, judge module 20 and second processing module 30, describe in detail below.
After activating recording mechanism, the source of sound harvester of portable terminal (for example microphone) begins to gather the external sound signal.To the voice signal that receives through processing such as amplifications, analog to digital conversion after, be sent to first processing module 10.
Be sent in the sound signal of first processing module 10 and be mingled with a large amount of environmental noises, generally speaking, the noise in the playback environ-ment is constant relatively, so the frequency range of these noises (for example current sound) is also constant relatively, belongs to low frequency noise.First processing module 10 is responsible for that the sound signal that receives is carried out low cut and is handled, and reduces the low frequency noise in the sound signal, the corresponding noise frequency range of the range of decrease.For example, the low frequency noise below 10 couples of 300Hz of first processing module excises.Preferably, said first processing module 10 is a wave filter.
And native system also comprises: memory module 40, be used to preserve sound signal through after 20 processing of second processing module, and supply the user to use.
According to the foregoing description; After through first processing module (wave filter) and second processing module (compressor reducer) the external sound signal of gathering being handled respectively; The Signal-to-Noise that obtains obviously improves; It is clear full that tonequality can become, and effectively improved recording tonequality, satisfied user's request for utilization.
According to embodiments of the invention, a kind of audio-frequency processing method that is used for portable terminal is provided also.After activating recording mechanism, source of sound harvester (for example microphone) begins to receive the external sound signal.With reference to figure 2, audio-frequency processing method according to the present invention may further comprise the steps at least:
Step S202 carries out low cut to the sound signal that receives and handles, and in reality, can be carried out the processing of this step by wave filter.
Step S204 judges according to the intensity of sound of sound signal, and intensity of sound is a useful signal greater than the sound signal of predetermined threshold value, otherwise is invalid signals.Wherein, the intensity of sound according to the sound signal of importing is provided with said threshold value.
Step S206 promotes the volume of said useful signal according to predetermined ratio, reduces the volume of said invalid signals or excises said invalid signals fully according to predetermined ratio.In reality, can carry out the processing of this step by compressor reducer.
Step S208 preserves through the sound signal after the step S206 processing, supplies the user to use.
The operation steps of method of the present invention is corresponding with the architectural feature of system, can cross-reference, give unnecessary details no longer one by one.
According to the foregoing description; After through first processing module (wave filter) and second processing module (compressor reducer) the external sound signal of gathering being handled respectively; The Signal-to-Noise that obtains obviously improves; It is clear full that tonequality can become, and effectively improved recording tonequality, satisfied user's request for utilization.
The above is merely embodiments of the invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the claim scope of the present invention.
Claims (10)
1. an audio frequency processing system that is used for portable terminal is characterized in that, comprising:
First processing module is used for that the sound signal that receives is carried out low cut and handles;
Judge module is used for judging according to the intensity of sound of sound signal, and intensity of sound is a useful signal greater than the sound signal of predetermined threshold value, otherwise is invalid signals;
Second processing module is used for promoting according to predetermined ratio the volume of said useful signal, and reduces the volume of said invalid signals or excise said invalid signals fully according to predetermined ratio.
2. circuit according to claim 1 is characterized in that, also comprises:
Memory module is used to preserve the sound signal of handling through said second processing module.
3. circuit according to claim 1 is characterized in that, according to the intensity of sound of sound signal of input said threshold value is set.
4. circuit according to claim 1 is characterized in that, said first processing module is a wave filter.
5. circuit according to claim 1 is characterized in that, said second processing module is a compressor reducer.
6. the audio-frequency processing method of a portable terminal is characterized in that, comprising:
The sound signal that receives is carried out low cut to be handled;
Intensity of sound according to sound signal judges that intensity of sound is a useful signal greater than the sound signal of predetermined threshold value, otherwise is invalid signals;
Promote the volume of said useful signal according to predetermined ratio, and reduce the volume of said invalid signals or excise said invalid signals fully according to predetermined ratio.
7. method according to claim 6 is characterized in that, also comprises:
Preserve treated sound signal.
8. method according to claim 6 is characterized in that, according to the intensity of sound of sound signal of input said threshold value is set.
9. method according to claim 6 is characterized in that, through wave filter the sound signal that receives is carried out low cut and handles.
10. method according to claim 6 is characterized in that, promotes the volume of said useful signal through compressor reducer according to predetermined ratio, and reduces the volume of said invalid signals or excise said invalid signals fully according to predetermined ratio.
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103051774A (en) * | 2011-10-14 | 2013-04-17 | 浪潮乐金数字移动通信有限公司 | Mobile terminal based on multi-unit loudspeaker |
| CN103559907A (en) * | 2013-10-25 | 2014-02-05 | 广州华多网络科技有限公司 | Recording method, device and terminal |
| CN104157287A (en) * | 2014-07-29 | 2014-11-19 | 广州视源电子科技股份有限公司 | Audio processing method and device |
| CN104318919A (en) * | 2014-10-22 | 2015-01-28 | 上海斐讯数据通信技术有限公司 | Environment noise elimination method and system and mobile terminal |
| CN104581538A (en) * | 2015-01-28 | 2015-04-29 | 三星电子（中国）研发中心 | Noise eliminating method and device |
| CN104640054A (en) * | 2015-02-12 | 2015-05-20 | 广东欧珀移动通信有限公司 | Earphone/loudspeaker testing method and system for mobile terminal |
| CN103051774B (en) * | 2011-10-14 | 2016-12-14 | 浪潮乐金数字移动通信有限公司 | A kind of mobile terminal based on multi-unit loudspeaker |
| CN106328154A (en) * | 2015-06-30 | 2017-01-11 | 芋头科技（杭州）有限公司 | Front-end audio processing system |
| CN106534461A (en) * | 2016-11-04 | 2017-03-22 | 惠州Tcl移动通信有限公司 | Denoising system for earphone and denoising method thereof |
| CN106887231A (en) * | 2015-12-16 | 2017-06-23 | 芋头科技（杭州）有限公司 | A kind of identification model update method and system and intelligent terminal |
| CN106971707A (en) * | 2016-01-14 | 2017-07-21 | 芋头科技（杭州）有限公司 | The method and system and intelligent terminal of voice de-noising based on output offset noise |
| CN106971724A (en) * | 2016-01-14 | 2017-07-21 | 芋头科技（杭州）有限公司 | A kind of anti-tampering method for recognizing sound-groove and system |
| CN106971733A (en) * | 2016-01-14 | 2017-07-21 | 芋头科技（杭州）有限公司 | The method and system and intelligent terminal of Application on Voiceprint Recognition based on voice de-noising |
| CN106971739A (en) * | 2016-01-14 | 2017-07-21 | 芋头科技（杭州）有限公司 | The method and system and intelligent terminal of a kind of voice de-noising |
| CN106981289A (en) * | 2016-01-14 | 2017-07-25 | 芋头科技（杭州）有限公司 | A kind of identification model training method and system and intelligent terminal |
| CN107274907A (en) * | 2017-07-03 | 2017-10-20 | 北京小鱼在家科技有限公司 | The method and apparatus that directive property pickup is realized in dual microphone equipment |
| CN107544769A (en) * | 2017-07-12 | 2018-01-05 | 捷开通讯(深圳)有限公司 | Method and audio-frequency assembly, voice frequency terminal based on vibrating motor collection voice command |
| CN108986783A (en) * | 2018-06-21 | 2018-12-11 | 珠海金山网络游戏科技有限公司 | It is a kind of it is three-dimensional dynamic catch in record and inhibit in real time the method and system of noise in unison |
| CN109495776A (en) * | 2018-12-20 | 2019-03-19 | 青岛海信电器股份有限公司 | The method and intelligent terminal that a kind of audio sends, plays |
| CN113261300A (en) * | 2018-12-20 | 2021-08-13 | 海信视像科技股份有限公司 | Audio sending and playing method and smart television |
| US11190836B2 (en) | 2018-12-20 | 2021-11-30 | Hisense Visual Technology Co., Ltd. | Audio playing and transmitting methods and apparatuses |
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Cited By (28)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103051774A (en) * | 2011-10-14 | 2013-04-17 | 浪潮乐金数字移动通信有限公司 | Mobile terminal based on multi-unit loudspeaker |
| CN103051774B (en) * | 2011-10-14 | 2016-12-14 | 浪潮乐金数字移动通信有限公司 | A kind of mobile terminal based on multi-unit loudspeaker |
| CN103559907B (en) * | 2013-10-25 | 2016-06-08 | 广州华多网络科技有限公司 | The way of recording, device and terminal |
| CN103559907A (en) * | 2013-10-25 | 2014-02-05 | 广州华多网络科技有限公司 | Recording method, device and terminal |
| CN104157287A (en) * | 2014-07-29 | 2014-11-19 | 广州视源电子科技股份有限公司 | Audio processing method and device |
| CN104157287B (en) * | 2014-07-29 | 2017-08-25 | 广州视源电子科技股份有限公司 | Audio processing method and device |
| CN104318919A (en) * | 2014-10-22 | 2015-01-28 | 上海斐讯数据通信技术有限公司 | Environment noise elimination method and system and mobile terminal |
| CN104318919B (en) * | 2014-10-22 | 2020-04-21 | 上海斐讯数据通信技术有限公司 | Environment noise elimination method and system and mobile terminal |
| CN104581538B (en) * | 2015-01-28 | 2018-03-02 | 三星电子（中国）研发中心 | The method and apparatus to abate the noise |
| CN104581538A (en) * | 2015-01-28 | 2015-04-29 | 三星电子（中国）研发中心 | Noise eliminating method and device |
| CN104640054A (en) * | 2015-02-12 | 2015-05-20 | 广东欧珀移动通信有限公司 | Earphone/loudspeaker testing method and system for mobile terminal |
| CN104640054B (en) * | 2015-02-12 | 2018-02-02 | 广东欧珀移动通信有限公司 | Mobile terminal receiver/loudspeaker method of testing and system |
| CN106328154A (en) * | 2015-06-30 | 2017-01-11 | 芋头科技（杭州）有限公司 | Front-end audio processing system |
| CN106887231A (en) * | 2015-12-16 | 2017-06-23 | 芋头科技（杭州）有限公司 | A kind of identification model update method and system and intelligent terminal |
| CN106971739A (en) * | 2016-01-14 | 2017-07-21 | 芋头科技（杭州）有限公司 | The method and system and intelligent terminal of a kind of voice de-noising |
| CN106971733A (en) * | 2016-01-14 | 2017-07-21 | 芋头科技（杭州）有限公司 | The method and system and intelligent terminal of Application on Voiceprint Recognition based on voice de-noising |
| CN106971724A (en) * | 2016-01-14 | 2017-07-21 | 芋头科技（杭州）有限公司 | A kind of anti-tampering method for recognizing sound-groove and system |
| CN106971707A (en) * | 2016-01-14 | 2017-07-21 | 芋头科技（杭州）有限公司 | The method and system and intelligent terminal of voice de-noising based on output offset noise |
| CN106981289A (en) * | 2016-01-14 | 2017-07-25 | 芋头科技（杭州）有限公司 | A kind of identification model training method and system and intelligent terminal |
| CN106534461A (en) * | 2016-11-04 | 2017-03-22 | 惠州Tcl移动通信有限公司 | Denoising system for earphone and denoising method thereof |
| CN107274907A (en) * | 2017-07-03 | 2017-10-20 | 北京小鱼在家科技有限公司 | The method and apparatus that directive property pickup is realized in dual microphone equipment |
| CN107544769A (en) * | 2017-07-12 | 2018-01-05 | 捷开通讯(深圳)有限公司 | Method and audio-frequency assembly, voice frequency terminal based on vibrating motor collection voice command |
| CN108986783A (en) * | 2018-06-21 | 2018-12-11 | 珠海金山网络游戏科技有限公司 | It is a kind of it is three-dimensional dynamic catch in record and inhibit in real time the method and system of noise in unison |
| CN109495776A (en) * | 2018-12-20 | 2019-03-19 | 青岛海信电器股份有限公司 | The method and intelligent terminal that a kind of audio sends, plays |
| CN109495776B (en) * | 2018-12-20 | 2021-02-05 | 海信视像科技股份有限公司 | Audio sending and playing method and intelligent terminal |
| CN113261300A (en) * | 2018-12-20 | 2021-08-13 | 海信视像科技股份有限公司 | Audio sending and playing method and smart television |
| US11190836B2 (en) | 2018-12-20 | 2021-11-30 | Hisense Visual Technology Co., Ltd. | Audio playing and transmitting methods and apparatuses |
| US11871075B2 (en) | 2018-12-20 | 2024-01-09 | Hisense Visual Technology Co., Ltd. | Audio playing and transmitting methods and apparatuses |
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Application publication date: 20121128 |