CN102571011A - Method and device for adjusting sound volume - Google Patents
Method and device for adjusting sound volume Download PDFInfo
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- CN102571011A CN102571011A CN2011104226130A CN201110422613A CN102571011A CN 102571011 A CN102571011 A CN 102571011A CN 2011104226130 A CN2011104226130 A CN 2011104226130A CN 201110422613 A CN201110422613 A CN 201110422613A CN 102571011 A CN102571011 A CN 102571011A
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Abstract
The invention discloses a method for adjusting sound volume. The method is used for adjusting the sound volume to improve the auditory comfort level. The method comprises the following steps: carrying out audio decoding on audio files; carrying out audio analog gain on audio signals obtained after audio decoding; outputting the audio signals; obtaining the output audio signals and obtaining the values of the sound volume by carrying out sound volume analysis on the output audio signals; judging whether the obtained values of the sound volume are in a preset sound volume range; and adjusting the audio gain value in the step for carrying out audio analog gain on the audio signals obtained after audio decoding when the values of the sound volume are not in the preset sound volume range. The invention also discloses a device for realizing the method.
Description
Technical field
The present invention relates to Audio Processing and built-in field, particularly relate to method and the device of regulating volume.
Background technology
Along with development of electronic technology, various electronic products are full of around people.People ask better audio visual effect most when enjoying amusement.
All there is the Audio Processing function in general electronic system, vehicle-carrying DVD for example, notebook computer, mobile phone, audio & video equipment, panel computer, TV, bluetooth earphone etc.In these systems when regular meeting runs into the volume that voice playing goes out little problem when big.For example; Play a plurality of mp3 (MPEG-1 layer 3MPEG-1 with computer; The 3rd layer of mark of audio frequency) during song, there are differences, if adopt identical signal amplification factor (audio signal gain) during broadcast owing to the volume of different songs when recording is different; Cause then hearing that the song volume that has is too little, and the song volume that has is too big.Sometimes unexpected big volume even there is damage in hearing, too little volume also makes and not person of modern times's meaning of music effect produces ill effect.When televising different channel, also there is similar problem, when switching TV channel, volume possibly occur and become too little or too big suddenly, cause the sense of hearing unhappy.
But be to regulate volume manually at present mostly, if little when big during volume, then need artificial frequent adjusting, operation is inconvenience very.
Summary of the invention
The embodiment of the invention provides a kind of method and device of regulating volume, is used to realize the adjustment of volume, to improve the comfort level of the sense of hearing.
A kind of method of regulating volume may further comprise the steps:
Audio file is carried out audio decoder;
Audio signal behind the audio decoder is carried out the audio frequency simulation gain;
Output audio signal;
Obtain the audio signal of output, and carry out the volume analysis, obtain the value of volume through audio signal to this output; Whether the value of the volume that judge to obtain is in preset volume range;
When the value of described volume is not in preset volume range, is adjusted in the audio signal behind the audio decoder is carried out the audio gain value in the audio frequency simulation gain step.
A kind of device that is used to regulate volume comprises:
Audio decoder module, analog gain control module, audio output device, audio receiver and volume analysis module;
Audio decoder module decoded audio signal;
The audio signal of analog gain control module after to audio decoder module decoded audio signal carried out the audio frequency simulation gain;
The volume analysis module according to the value of volume in the audio signal analysis audio signal that obtains and the value of judging described volume whether in preset volume range;
When the value of described volume was not in preset volume range, volume analysis module output volume adjusting signal to analog gain control module was also controlled the analog gain control module audio signal is carried out the audio gain value in the audio frequency simulation gain.
In the embodiment of the invention audio signal of output is extracted or caught; And whether the volume of analyzing the audio signal of output surpass preset volume range, if surpass, then the volume of the audio signal of input regulated; Thereby realize the adjustment of volume, to improve the comfort level of the sense of hearing.
Description of drawings
Fig. 1 is a method flow diagram of regulating volume in the embodiment of the invention;
Fig. 2 A is the primary structure figure that installs in the embodiment of the invention;
Fig. 2 B is the preferred structure figure that installs in the embodiment of the invention;
Fig. 3 is the structure chart of embodiment of the invention middle pitch component analysis module;
Fig. 4-Fig. 7 is the detailed structure view of different implementation lower devices in the embodiment of the invention.
Embodiment
In the embodiment of the invention audio signal of output is extracted or caught; And whether the volume of analyzing the audio signal of output surpass preset volume range, if surpass, then the volume of the audio signal of input regulated; Thereby realize the adjustment of volume, to improve the comfort level of the sense of hearing.
Referring to Fig. 1, the method flow of regulating volume in the present embodiment is following:
Step 101: audio file is carried out audio decoder.
Step 102: the audio signal behind the audio decoder is carried out the audio frequency simulation gain.
Step 103: output audio signal.
Step 104: obtain the audio signal of output, and carry out the volume analysis, obtain the value of volume through audio signal to this output.
Step 105: whether the value of the volume that judge to obtain is in preset volume range.
Step 106: when the value of described volume is not in preset volume range, is adjusted in the audio signal behind the audio decoder is carried out the audio gain value in the audio frequency simulation gain step.
When in preset volume range, then do not regulate, by original tactful output audio signal.
Wherein, step 101 has multiple implementation: like mode one: obtain the audio signal after audio power amplifies, and carry out the volume analysis through the audio signal to this output, obtain the value of volume.Mode two: obtain the audio signal of output through audio receiver, and carry out the volume analysis, obtain the value of volume through audio signal to this output.When employing mode two, after obtaining the audio signal of output, the audio signal of the output that obtains is carried out analog-to-digital conversion through audio receiver, then the audio signal after the analog-to-digital conversion is carried out the volume analysis, obtain the value of volume.Mode three: obtain the audio signal after analog gain is controlled, and carry out the volume analysis, obtain the value of volume through audio signal to this output.
Above volume adjustment process can be realized by device, introduces in the face of the internal structure of device down.
Existing apparatus for processing audio comprises: audio frequency read module, audio decoder module, D/A converter module (DAC), analog gain control module, audio-frequency power amplifier and audio output device.
The audio frequency read module is used for reading audio file or audio signal from memory.This memory can be disk or buffer memory etc., and the source of audio file or audio signal can be a wired or wireless network etc.Audio signal can be the audio-frequency unit in the vision signal.The audio decoder module is used for audio signal is decoded.Because the audio signal that reads mostly at present is a digital signal, then D/A converter module is used for decoded audio signal is converted into the audio signal of simulation.The analog gain control module is used for regulating the set volume of button according to volume the audio signal of simulation is carried out analog gain control, promptly multiply by corresponding analog gain signal.Audio-frequency power amplifier is used for the signal of analog gain control module output is carried out power amplification.Audio output device is used for the audio signal after power output is amplified, and audio output device can be earphone or loud speaker etc.
Present embodiment has mainly increased the volume analysis module on this basis, and shown in Fig. 2 A, the device that is used to regulate volume comprises: audio frequency acquisition module 200 and volume analysis module 202.
Audio frequency acquisition module 200 is used to the audio signal that obtains to import.
The audio signal that volume analysis module 202 is used for obtaining to export and the value of this audio signal volume; Whether the value of the volume that judge to obtain is in preset volume range; When not in preset volume range,, the volume of the audio signal of the input of audio frequency acquisition module 200 acquisitions is regulated according to the volume of the audio signal of output direction to volume range.
Preferable, referring to Fig. 2 B:
Audio signal behind 205 pairs of audio decoder modules of analog gain control module decoded audio signal is carried out the audio frequency simulation gain;
When the value of described volume was not in preset volume range, volume analysis module 202 output volume adjusting signal to analog gain control modules 205 were also controlled the analog gain control module audio signal are carried out the audio gain value in the audio frequency simulation gain.
Concrete:
Audio frequency acquisition module 200 comprises: audio frequency read module 201, audio decoder module 203, D/A converter module (DAC) 204, analog gain control module 205.Said device also comprises: audio-frequency power amplifier 206 and audio output device 207.Series connection in order between each module, its function as previously mentioned.
To mode one, volume analysis module 202 is connected with the output of audio-frequency power amplifier 206, and obtains the audio signal (analog signal) of output from audio-frequency power amplifier 206.
To mode two, said device also comprises: audio receiver 208 is used to obtain the audio signal that audio output device 207 is exported.The audio output device 207 here is preferably loud speaker, and the effect of earphone is not very desirable.This audio receiver 208 can be the equipment that microphone etc. can convert sound wave into the signal of telecommunication.Volume analysis module 202 is connected with the output of audio receiver 208, and obtains the audio signal (analog signal) of output from audio receiver 208.
Perhaps, said device also comprises: analog to digital converter 209, be connected with the output of audio receiver 208, and be used for the audio signal of audio receiver 208 outputs is carried out analog-to-digital conversion, obtain the audio signal of numeral.Volume analysis module 202 is connected with the output of analog to digital converter 209, and obtains the audio signal (digital signal) of output from analog to digital converter 209.
To mode three, volume analysis module 202 is connected with the output of analog gain control module 205, and obtains the audio signal (analog signal) of output from analog gain control module 205.
When the audio signal that volume analysis module 202 obtains was digital signal, volume analysis module 202 was a programmable logic device, for example is FPGA (Field Programmable Gate Array, field programmable gate array) etc.Volume analysis module 202 can obtain the value of the bit of expression volume in the digital audio and video signals through software mode, thereby confirms the value of volume.
When the audio signal that volume analysis module 202 obtains was analog signal, volume analysis module 202 comprised: first comparator 301 and second comparator 302, and referring to shown in Figure 3.First comparator 301 is used for the volume value of audio signal is compared with the first preset voltage threshold VR1, and through comparative result A volume is regulated; Second comparator 302 is used for the volume value of audio signal is compared with the second preset voltage threshold VR2, and through comparative result B volume is regulated; Wherein, the scope of first voltage threshold and second voltage threshold formation is said preset volume range.For example, the first voltage threshold VR1 is less than the second voltage threshold VR2, if the volume value of the audio signal of output then need be heightened the volume value of the audio signal of output less than the first voltage threshold VR1; If the volume value of the audio signal of output then need be turned down the volume value of the audio signal of output greater than the second voltage threshold VR2.
The output of volume analysis module 202 is connected with analog gain control module 205, regulates in the volume of audio signal being carried out in the analog gain control procedure the audio signal of input.There are a plurality of optional analog gains in the analog gain control module 205; The analog gain that volume analysis module 202 needs with selection to analog gain control module 205 output control signals; Thereby realize adjusting, make volume after the adjusting more near preset volume range or be positioned at preset volume range to volume.
But the mode one, two of present embodiment sound intermediate frequency signal acquisition behavior and three and volume regulative mode combination in any.For example, the assembled scheme of mode two and volume regulative mode is referring to Fig. 4 and shown in Figure 5.The assembled scheme of mode one and volume regulative mode is referring to shown in Figure 6.The assembled scheme of mode three and volume regulative mode is referring to shown in Figure 7.
In the embodiment of the invention audio signal of output is extracted or caught; And whether the volume of analyzing the audio signal of output surpass preset volume range, if surpass, then the volume of the audio signal of input regulated; Thereby realize the adjustment of volume, to improve the comfort level of the sense of hearing.The audio signal that obtains output in the embodiment of the invention has number of ways, and the audio signal of carrying out the input of volume adjusting also has number of ways, is applicable to the needs of several scenes.
Those skilled in the art should understand that embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of the embodiment of complete hardware embodiment, complete software implementation example or combination software and hardware aspect.And the present invention can be employed in the form that one or more computer-usable storage medium (including but not limited to magnetic disc store and optical memory etc.) that wherein include computer usable program code go up the computer program of implementing.
The present invention is that reference is described according to the flow chart and/or the block diagram of method, equipment (system) and the computer program of the embodiment of the invention.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or the block diagram and/or square frame and flow chart and/or the block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, make the instruction of carrying out through the processor of computer or other programmable data processing device produce to be used for the device of the function that is implemented in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in ability vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work; Make the instruction that is stored in this computer-readable memory produce the manufacture that comprises command device, this command device is implemented in the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded on computer or other programmable data processing device; Make on computer or other programmable devices and to carry out the sequence of operations step producing computer implemented processing, thereby the instruction of on computer or other programmable devices, carrying out is provided for being implemented in the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (13)
1. method of regulating volume may further comprise the steps:
Audio file is carried out audio decoder;
Audio signal behind the audio decoder is carried out the audio frequency simulation gain, and output audio signal;
It is characterized in that this method also comprises:
Obtain the audio signal of output, and carry out the volume analysis, obtain the value of volume through audio signal to this output; Whether the value of the volume that judge to obtain is in preset volume range;
When the value of described volume is not in preset volume range, is adjusted in the audio signal behind the audio decoder is carried out the audio gain value in the audio frequency simulation gain step.
2. the method for claim 1 is characterized in that, obtains the audio signal of output through audio receiver, and carries out the volume analysis through the audio signal to this output, and the step that obtains the value of volume comprises:
Obtain the audio signal of output through audio receiver;
Audio signal to the output that obtains is carried out analog-to-digital conversion;
Audio signal after the analog-to-digital conversion is carried out the volume analysis, obtain the value of volume.
3. method as claimed in claim 2 is characterized in that, the audio signal after the analog-to-digital conversion is carried out the volume analysis, and the step that obtains the value of volume comprises: the value that obtains the bit of expression volume in the digital audio and video signals.
4. the method for claim 1; It is characterized in that; According to the volume of the audio signal of output to the direction of volume range; Step audio signal being carried out in the analog gain control procedure the volume of the audio signal of input is regulated comprises: according to the volume of the audio signal of output direction to volume range, and the analog gain that selections needs, and the analog gain through selection is regulated the volume of the audio signal imported.
5. the method for claim 1 is characterized in that, the method for said adjusting volume is carried out power amplification after also comprising the audio frequency letter to the audio frequency simulation gain, and the audio signal of said output is the audio signal after the power amplification.
6. the method for claim 1; It is characterized in that; The method of said adjusting volume also comprises carries out power amplification behind the audio frequency letter to audio frequency simulation gain and by audio output device output, the audio signal of said output be the audio signal of being exported by audio output device.
7. device that is used to regulate volume, comprising: audio decoder module, analog gain control module is characterized in that: this device also comprises the volume analysis module;
Audio decoder module decoded audio signal;
The audio signal of analog gain control module after to audio decoder module decoded audio signal carried out the audio frequency simulation gain;
The volume analysis module according to the value of volume in the audio signal analysis audio signal that obtains and the value of judging described volume whether in preset volume range;
When the value of described volume was not in preset volume range, volume analysis module output volume adjusting signal to analog gain control module was also controlled the analog gain control module audio signal is carried out the audio gain value in the audio frequency simulation gain.
8. device as claimed in claim 7 is characterized in that, also comprises: analog to digital converter between audio receiver and volume analysis module, is used for the audio signal of audio receiver output is carried out analog-to-digital conversion, and exports to the volume analysis module.
9. device as claimed in claim 8 is characterized in that, the volume analysis module obtains the value of the bit of expression volume in the digital audio and video signals.
10. device as claimed in claim 7; It is characterized in that; The volume analysis module according to the volume of the audio signal of output to the direction of volume range; To the analog gain that the analog gain control module transmits control signal and needs with selection, the analog gain control module is regulated to the volume of the audio signal of input through the analog gain of selecting.
11. device as claimed in claim 7 is characterized in that, also comprises: the analog gain control module, be used for carrying out power amplification behind the audio frequency letter to the audio frequency simulation gain, the audio signal of said output is the audio signal after the power amplification.
12. device as claimed in claim 11 is characterized in that, also comprises: audio output device also is used for carrying out power amplification and output behind the audio frequency letter to the audio frequency simulation gain, and the audio signal of said output is the audio signal by audio output device output.
13., it is characterized in that when the audio signal that said volume analysis module obtains was digital signal, said volume analysis module was a programmable logic device like each described device in the claim 7 to 10; Perhaps
When the audio signal that said volume analysis module obtains was analog signal, said volume analysis module comprised: first comparator and second comparator; First comparator is used for the volume value of audio signal is compared with the first preset voltage threshold, and through comparative result volume is regulated; Second comparator is used for the volume value of audio signal is compared with the second preset voltage threshold, and through comparative result volume is regulated; Wherein, the scope of first voltage threshold and second voltage threshold formation is said preset volume range.
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| CN2011104226130A CN102571011A (en) | 2011-12-15 | 2011-12-15 | Method and device for adjusting sound volume |
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| CN2011104226130A CN102571011A (en) | 2011-12-15 | 2011-12-15 | Method and device for adjusting sound volume |
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| CN104853290A (en) * | 2015-04-29 | 2015-08-19 | 青岛歌尔声学科技有限公司 | Audio signal processing circuit and electronic equipment with same |
| CN106293606A (en) * | 2016-08-16 | 2017-01-04 | 微鲸科技有限公司 | Sound-volume control system and method for controlling volume |
| CN112652327A (en) * | 2019-10-10 | 2021-04-13 | 北京新能源汽车股份有限公司 | Method and device for testing adaptation effect of audio channel and automobile |
| CN112752197A (en) * | 2019-10-30 | 2021-05-04 | 北京小米移动软件有限公司 | Information processing method and device, terminal device and storage medium |
| CN113747309A (en) * | 2020-05-27 | 2021-12-03 | 阿里巴巴集团控股有限公司 | Audio processing method, link and equipment |
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| CN1983804A (en) * | 2005-12-16 | 2007-06-20 | 鸿富锦精密工业（深圳）有限公司 | Audio-frequency processor and volume management |
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| US20060126856A1 (en) * | 2004-12-10 | 2006-06-15 | Quanta Computer Inc. | Volume control method and audio device |
| US20070126503A1 (en) * | 2005-11-25 | 2007-06-07 | Hon Hai Precision Industry Co., Ltd. | Audio processing system and method for automatically adjusting volume |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104853290A (en) * | 2015-04-29 | 2015-08-19 | 青岛歌尔声学科技有限公司 | Audio signal processing circuit and electronic equipment with same |
| CN104853290B (en) * | 2015-04-29 | 2018-09-28 | 青岛歌尔声学科技有限公司 | A kind of audio signal processing circuit and electronic equipment with the circuit |
| CN106293606A (en) * | 2016-08-16 | 2017-01-04 | 微鲸科技有限公司 | Sound-volume control system and method for controlling volume |
| CN112652327A (en) * | 2019-10-10 | 2021-04-13 | 北京新能源汽车股份有限公司 | Method and device for testing adaptation effect of audio channel and automobile |
| CN112652327B (en) * | 2019-10-10 | 2023-04-25 | 北京新能源汽车股份有限公司 | Audio channel adaptation effect testing method and device and automobile |
| CN112752197A (en) * | 2019-10-30 | 2021-05-04 | 北京小米移动软件有限公司 | Information processing method and device, terminal device and storage medium |
| US11375330B2 (en) | 2019-10-30 | 2022-06-28 | Beijing Xiaomi Mobile Software Co., Ltd. | Method and device for processing information, terminal device, and storage medium |
| US11750993B2 (en) | 2019-10-30 | 2023-09-05 | Beijing Xiaomi Mobile Software Co., Ltd. | Method and device for processing information, terminal device, and storage medium |
| CN113747309A (en) * | 2020-05-27 | 2021-12-03 | 阿里巴巴集团控股有限公司 | Audio processing method, link and equipment |
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Application publication date: 20120711 |