CN103746668A - Sound volume control method and system - Google Patents
Sound volume control method and system Download PDFInfo
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- CN103746668A CN103746668A CN201310750633.XA CN201310750633A CN103746668A CN 103746668 A CN103746668 A CN 103746668A CN 201310750633 A CN201310750633 A CN 201310750633A CN 103746668 A CN103746668 A CN 103746668A
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Abstract
The invention provides a sound volume control method and a sound volume control system, wherein the sound volume control system comprises an obtaining module, a processing module and an output module, wherein the obtaining module is used for obtaining audio files, initial amplification times, the reference vibration amplitude of the audio files and the vibration amplitude of an audio file to be played, the processing module is used for determining the regulating parameter of the amplification times according to the difference values between the reference vibration amplitude and the vibration amplitude of the audio file to be played when the initial amplification times is not zero, and the output module is used for calculating the sum of the initial amplification times and the regulating parameters to obtain the actual amplification times and playing the audio file to be played according to the actual amplification times. The sound volume control method and the sound volume control system provided by the invention have the advantages that the amplification times of the audio file can be automatically regulated according to the vibration amplitude of the audio file to be played, and further, the sound volume of the audio file to be played is regulated, so the audio file to be played is played according to the standard playing sound volume, and the influence caused by the sound volume fluctuation on the hearing of users can be avoided.
Description
Technical field
The present invention relates to audio signal processing technique field, relate in particular to a kind of method for controlling volume and system.
Background technology
Music player mainly comprises aspect two when carrying out sound adjusting.Be an adjusting for equalizer, it,, by the audio frequency of different frequency section being reduced or increased the mode of gain, improves the quality of output sound.The adjusting of equalizer is mainly outstanding or weakens the sound of some frequency, change be tonequality, make to sound softer or sharp-pointed.But in actual applications, a lot of songs are not need audience to go to change tonequality.Another kind is volume adjusting function, according to the volume of user's setting, regulates the multiplication factor of hardware device (amplifier).The mode that this sound regulates is not distinguished the amplitude size of audio file itself, only the amplitude of audio file itself is amplified to certain multiple in proportion and plays, and reaches the adjustment to audio file broadcast sound volume.
At present, music player is just fixed zooming in or out of multiple to the amplitude of audio file, do not have the amplitude that judges audio file, the broadcast sound volume of the audio file of then setting according to user carries out self-adjusting function to the multiplication factor of audio file.So just there is a problem: when the multiple audio files in audio file playlist are play, user can only adjust according to the amplitude of in progress audio file the multiplication factor of amplifier, thereby in progress audio file is play with suitable volume.Follow-up as long as user does not adjust the multiplication factor of amplifier, in audio file list, subsequent sound frequency file is all play with the multiplication factor setting.Although the amplitude of most of audio files is consistent substantially, minority audio file is because the various reasons amplitudes such as sound pick-up outfit, environment, sound source size are low or exceed a lot compared with the amplitude of ordinary audio file.When just when the amplitude of displaying audio file own and the amplitude of setting the audio file of playing during multiplication factor differ large (on the low side or higher), user will feel not hear (or sound is too noisy).
For above-mentioned situation, the multiplication factor that often needs user to remove manual interim adjustment amplifier, make on subjective feeling with before volume be consistent.During user's displaying audio file, need to repeatedly manually adjust complex operation.
Summary of the invention
The problem that the present invention solves is to provide a kind of method for controlling volume and system, according to the size of audio file amplitude to be played, automatically adjust the multiplication factor of this audio file, and then adjust the volume of audio file to be played, audio file to be played is play with normal play volume.
For addressing the above problem, the invention provides a kind of method for controlling volume, comprising:
Obtain audio file, initial multiplication factor, the reference amplitude of audio file and the amplitude of audio file to be played;
When described initial multiplication factor is non-vanishing, according to the difference of the amplitude of audio file to be played and reference amplitude, determine the adjustment parameter of multiplication factor;
Calculate described initial multiplication factor and described adjustment parameter and, to obtain actual multiplication factor, and with actual multiplication factor, described audio file to be played is play.
Optionally, according to the difference of the amplitude of audio file to be played and reference amplitude, determine that the adjustment parameter of multiplication factor comprises:
Calculate the poor of the amplitude of described audio file to be played and reference amplitude;
According to the corresponding relation of difference of vibration and adjustment parameter, determine described adjustment parameter.
Optionally, calculate described initial multiplication factor and described adjustment parameter and, to obtain actual multiplication factor, comprise:
When described initial multiplication factor and described adjustment parameter and while being less than or equal to first threshold, described actual multiplication factor equals first threshold;
When described initial multiplication factor and described adjustment parameter and when being greater than first threshold and being less than Second Threshold, described actual multiplication factor equal described initial multiplication factor and described adjustment parameter and;
When described initial multiplication factor and described adjustment parameter and while being greater than or equal to Second Threshold, described actual multiplication factor equals Second Threshold.
Optionally, the mean amplitude of tide that the amplitude of described audio file to be played is described audio file to be played, the reference amplitude of described audio file is the mean amplitude of tide of initial play audio file, described initial multiplication factor is the multiplication factor of initial play audio file.
Accordingly, the present invention also provides a kind of sound-volume control system, comprising:
Acquisition module, for audio file is provided, described audio file comprises initial play audio file and audio file to be played;
Processing module, for when described initial multiplication factor is non-vanishing, determines the adjustment parameter of multiplication factor according to the difference of the amplitude of audio file to be played and reference amplitude;
Output module, for calculate described initial multiplication factor and described adjustment parameter and, to obtain actual multiplication factor, and with actual multiplication factor, described audio file to be played is play.
Optionally, described acquisition module comprises:
Audio frequency provides module, and for audio file is provided, described audio file comprises initial play audio file and audio file to be played;
Acquisition of information module, provides module to be connected with described audio frequency, for obtaining the reference amplitude of initial multiplication factor, audio file and the amplitude of audio file to be played.
Optionally, described processing module comprises:
Memory module, for storing difference of vibration and adjusting the corresponding relation of parameter, initial multiplication factor, the reference amplitude of audio file and the amplitude of audio file to be played
Parameter acquisition module, be connected with described memory module, for when described initial multiplication factor is non-vanishing, calculates the difference of amplitude and the reference amplitude of audio file to be played, and according to the corresponding relation of difference of vibration and adjustment parameter, determine the adjustment parameter of multiplication factor.
Optionally, described output module comprises:
Computing module, for calculate described initial multiplication factor and described adjustment parameter and, to obtain actual multiplication factor;
Amplifier, amplifies for the amplitude to audio file;
Adjusting module, is connected with described computing module and described amplifier, for the multiplication factor of described amplifier is adjusted to actual multiplication factor;
Player, is connected with described amplifier, for described audio file to be played being play with actual multiplication factor.
Optionally, described computing module comprises:
Summation module, for calculate described initial multiplication factor and described adjustment parameter and;
Value module, for when described initial multiplication factor and described adjustment parameter and while being less than or equal to first threshold, described actual multiplication factor is got first threshold; When described initial multiplication factor and described adjustment parameter and when being greater than first threshold and being less than Second Threshold, described actual multiplication factor get described initial multiplication factor and described adjustment parameter and; When described initial multiplication factor and described adjustment parameter and while being greater than or equal to Second Threshold, described actual multiplication factor is got Second Threshold.
Optionally, the mean amplitude of tide that the amplitude of described audio file to be played is described audio file to be played, the reference amplitude of described audio file is the mean amplitude of tide of initial play audio file, described initial multiplication factor is the multiplication factor of initial play audio file.
Compared with prior art, technical scheme of the present invention has the following advantages:
When initial multiplication factor is non-vanishing, according to the difference of the amplitude of audio file to be played and reference amplitude, determine the adjustment parameter of multiplication factor, and calculate initial multiplication factor and described adjustment parameter and as actual multiplication factor, described audio file to be played is play.The reference amplitude that is multiplied by audio file due to initial multiplication factor is the normal play volume that audio file that user sets is play, by reference to initial multiplication factor, the reference amplitude of audio file and the amplitude of audio file to be played, obtain after the actual multiplication factor of audio file to be played, when treating displaying audio file with actual multiplication factor and play, the volume of audio file to be played and normal play volume are more or less the same, make the user can be in the situation that manually not adjusting amplifier magnification ratio, to be similar to consistent volume, listen to multiple audio files, avoid fluctuations in volume to impact user's hearing.
Accompanying drawing explanation
Fig. 1 is the structural representation of sound-volume control system the first embodiment of the present invention;
Fig. 2 is the structural representation of sound-volume control system the second embodiment of the present invention;
Fig. 3 is the structural representation of computing module in sound-volume control system the second embodiment of the present invention.
Embodiment
Just as described in the background section, existing music player is just fixed zooming in or out of multiple to the amplitude of audio file, do not have the amplitude that judges audio file, the broadcast sound volume of the audio file of then setting according to user carries out self-adjusting function to the multiplication factor of audio file.Low or exceed when a lot of compared with the amplitude of ordinary audio file at audio file amplitude, user need to manually adjust the multiplication factor of amplifier, complex operation.
For the problems referred to above, the invention provides a kind of method for controlling volume and system, when audio file being play to (the initial multiplication factor that is amplifier is non-vanishing) with " non-quiet form ", first obtain audio file, initial multiplication factor, the reference amplitude of audio file and the amplitude of audio file to be played, and according to the difference of the amplitude of audio file to be played and reference amplitude, determine the adjustment parameter of multiplication factor, then calculate initial multiplication factor and described adjustment parameter and as actual multiplication factor, treat displaying audio file and play.The reference amplitude that is multiplied by audio file due to initial multiplication factor is the normal play volume that audio file that user sets is play, when treating displaying audio file with actual multiplication factor and play, the volume of audio file to be played and normal play volume are more or less the same, make the user can be in the situation that manually not adjusting amplifier magnification ratio, to be similar to consistent volume, listen to multiple audio files, avoid fluctuations in volume to impact user's hearing.
For above-mentioned purpose of the present invention, feature and advantage can more be become apparent, below in conjunction with accompanying drawing, specific embodiments of the invention are described in detail.
The first embodiment
With reference to figure 1, be the structural representation of sound-volume control system the first embodiment of the present invention, comprise acquisition module 10, processing module 20 and output module 30.Wherein:
Described acquisition module 10 is for obtaining audio file, initial multiplication factor, the reference amplitude of audio file and the amplitude of audio file to be played;
Described processing module 20 is connected with described acquisition module 10, for when described initial multiplication factor is non-vanishing, determines the adjustment parameter of multiplication factor according to the difference of the amplitude of audio file to be played and reference amplitude;
Described output module 30 is connected with described acquisition module 10 and described processing module 20, for calculate described initial multiplication factor and described adjustment parameter and, to obtain actual multiplication factor, and with actual multiplication factor, described audio file to be played is play.
In the present embodiment, the audio file that described acquisition module 10 obtains can be from high in the clouds, mobile phone, mobile terminal etc., and the present invention is not restricted this.
In the present embodiment, amplitude that can be using the mean amplitude of tide of described audio file to be played as described audio file to be played.This be because, when recording an audio file, its sound pick-up outfit, environment, sound source are constant, the amplitude variations of an audio file is less, therefore amplitude that can be using the mean amplitude of tide of audio file to be played as described audio file to be played.
In the present embodiment, the reference amplitude of described audio file can be the mean amplitude of tide of initial play audio file, and described initial multiplication factor can be the multiplication factor of initial play audio file.This be because, before the volume that sound-volume control system is treated displaying audio file in by Fig. 1 is adjusted automatically, user can be by manually adjusting the multiplication factor of initial play audio file, and the volume (being applicable to this user's normal play volume) that the audio file of initial play considers appropriate with user is play.The multiplication factor that therefore, the mean amplitude of tide of initial play audio file can be multiplied by initial play audio file is as the normal play volume that is applicable to active user and listens to.
When adopting in Fig. 1 sound-volume control system displaying audio file, comprise the steps:
First, described acquisition module 10 obtains audio file, initial multiplication factor, the reference amplitude of audio file and the amplitude of audio file to be played;
Then, described processing module 20 judges whether described initial multiplication factor is zero, when initial multiplication factor is non-vanishing, determines the adjustment parameter of multiplication factor according to the difference of the amplitude of audio file to be played and reference amplitude;
Finally, described output module 30 calculate described initial multiplication factor and described adjustment parameter and, to obtain actual multiplication factor, and with actual multiplication factor, described audio file to be played is play.
It should be noted that, in initial multiplication factor, be 1 o'clock, because the residing state of sound-volume control system is " silent mode ", user does not expect the information in audio file of hearing, the no matter height of the amplitude of audio file to be played, its actual multiplication factor all should be set to zero.Now, listen to the not impact of the amplitude of audio file to be played on user, the multiplication factor adjustment for the treatment of displaying audio file has little significance.Therefore,, in the present embodiment, only, when initial multiplication factor is non-vanishing, in Fig. 1, sound-volume control system is just adjusted the actual multiplication factor of audio file to be played according to the amplitude of the reference amplitude of audio file and audio file to be played.
In the present embodiment, the reference amplitude that is multiplied by audio file due to initial multiplication factor is the normal play volume that audio file that user sets is play, by reference to initial multiplication factor, the reference amplitude of audio file and the amplitude of audio file to be played, obtain after the actual multiplication factor of audio file to be played, when treating displaying audio file with actual multiplication factor and play, the volume of audio file to be played and normal play volume are more or less the same, make the user can be in the situation that manually not adjusting amplifier magnification ratio, to be similar to consistent volume, listen to multiple audio files, avoid fluctuations in volume to impact user's hearing.
The second embodiment
With reference to figure 2, it is the structural representation of sound-volume control system the second embodiment of the present invention.In Fig. 2, sound-volume control system comprises acquisition module 10, processing module 20 and output module 30.Wherein,
Described acquisition module 10 further comprises that audio frequency provides module 101 and acquisition of information module 103.Described audio frequency provides module 101 for obtaining audio file, and described audio file comprises initial play audio file and audio file to be played.Described acquisition of information module 103 provides module 101 to be connected with described audio frequency, for obtaining the reference amplitude of initial multiplication factor, audio file and the amplitude of audio file to be played.
Described processing module 20 further comprises memory module 201 and parameter acquisition module 203.Described memory module 201 is connected with described acquisition of information module 103, for storing difference of vibration and adjusting the corresponding relation of parameter, initial multiplication factor, the reference amplitude of audio file and the amplitude of audio file to be played.Described parameter acquisition module 203 is connected with described memory module 201, for when described initial multiplication factor is non-vanishing, calculate the difference of amplitude and the reference amplitude of audio file to be played, and according to the corresponding relation of difference of vibration and adjustment parameter, determine the adjustment parameter of multiplication factor.
In the present embodiment, the amplitude that described difference of vibration is audio file to be played and reference amplitude poor, described difference of vibration and adjust the corresponding relation of amplitude that the corresponding relation of parameter is audio file to be played and difference and the adjustment parameter of reference amplitude.
Non-vanishing in initial multiplication factor, when parameter acquisition module 203 is determined the adjustment parameter of multiplication factor according to the difference of the amplitude of audio file to be played and reference amplitude, can comprise the steps: to calculate the poor of the amplitude of described audio file to be played and reference amplitude; According to the corresponding relation of difference of vibration and adjustment parameter, determine described adjustment parameter.Concrete, the amplitude of audio file to be played and the difference of reference amplitude and adjustment parameter can meet following should the relation: when the amplitude of audio file to be played deducts reference amplitude, (unit is hertz, referred to as Hz) value scope be (25,-15], (15,-5], (5 ,+5], (+5 ,+15] and (+15, + 25], time, the adjustment parameter of corresponding multiplication factor is respectively-2 ,-1,0,1 and 2.For example, it is 16Hz that the amplitude of audio file to be played deducts reference amplitude, and corresponding adjustment parameter is 2.
Described output module 30 further comprises computing module 301, amplifier 303, adjusting module 305 and player 307.Described computing module 301 is connected with described memory module 201 and described parameter acquisition module 203, for calculate described initial multiplication factor and described adjustment parameter and, to obtain actual multiplication factor; Described amplifier 303 provides module 101 to be connected with described audio frequency, for the amplitude to audio file, amplifies; Described adjusting module 305 is connected with described computing module 301 and described amplifier 303, for the multiplication factor of described amplifier 303 is adjusted to actual multiplication factor; Described player 307 is connected with described amplifier 303, for described audio file to be played being play with actual multiplication factor.
Consider that at sound-volume control system the multiplication factor adjustment for the treatment of displaying audio file has little significance under " silent mode ".And when initial multiplication factor is non-vanishing, user still expects the information in audio file of hearing.Therefore, in actual conditions, described actual multiplication factor is greater than or equal to first threshold, and described first threshold is greater than zero.
In addition, considering that amplifier 303 is subject to the restriction of its hardware itself, all there is certain limitation in its multiplication factor.Therefore, actual multiplication factor should be less than or equal to Second Threshold, and described Second Threshold can be the high-amplification-factor of amplifier 303.
In view of the foregoing, in the present embodiment, described actual multiplication factor is greater than or equal to first threshold and is less than or equal to Second Threshold.For example, the multiplication factor of existing a kind of amplifier is the integer in 0～7 scope, and amplifier can be to 0,1,2,3,4,5,6 or 7 times of the Amplitude amplification of audio file.Now, described first threshold is 1, and described Second Threshold is 7.
As shown in Figure 3, computing module 301 described in the present embodiment further comprises summation module 3011 and value module 3013.Described summation module 3011 is connected with described memory module 201 and parameter acquisition module 203, for calculate described initial multiplication factor and described adjustment parameter and.Described value module 3013 is connected with described adjusting module 305 and described summation module 3011, for when described initial multiplication factor and described adjustment parameter and while being less than or equal to first threshold, getting first threshold is actual multiplication factor; When described initial multiplication factor and described adjustment parameter and when being greater than first threshold and being less than Second Threshold, get described initial multiplication factor and described adjustment parameter and be actual multiplication factor; When described initial multiplication factor and described adjustment parameter and while being greater than or equal to Second Threshold, getting Second Threshold is actual multiplication factor.
When adopting in Fig. 2 sound-volume control system displaying audio file, comprise the steps:
First, described audio frequency provides module 101 that initial play audio file and audio file to be played are provided;
Then, described acquisition of information module 103 is obtained the mean amplitude of tide of initial play audio file as the reference amplitude of audio file, obtain the multiplication factor (being the multiplication factor of initial play audio file) of amplifier 303 as initial multiplication factor, and obtain the mean amplitude of tide of audio file to be played as the amplitude of audio file to be played;
Then the reference amplitude of the memory module 201, being connected with described acquisition of information module 103 to initial multiplication factor, audio file and the amplitude of audio file to be played are stored; Meanwhile, described memory module 201 also stores the user difference of vibration setting in advance and the corresponding relation of adjusting parameter;
Then, described parameter acquisition module 203 judges whether described initial multiplication factor is zero, and when described initial multiplication factor is non-vanishing, calculate the difference of amplitude and the reference amplitude of audio file to be played, and according to the corresponding relation of difference of vibration and adjustment parameter, determine the adjustment parameter of multiplication factor;
Follow again, in described computing module 301 summation module 3011 calculate described initial multiplication factor and described adjustment parameter and, described value module 3013 by initial multiplication factor and described adjustment parameter and compare respectively with first threshold and Second Threshold, determine actual multiplication factor;
Then, described adjusting module 305 is adjusted to actual multiplication factor by the multiplication factor of described amplifier 303.
Finally, described player 307 is play described audio file to be played with actual multiplication factor.
It should be noted that, when the volume that sound-volume control system is treated displaying audio file in not using Fig. 2 is adjusted, audio file to be played in acquisition of information module 103 can amplify by amplifier 303, then by player 307, the audio file after amplifying is play.Because adjusting module in the present embodiment 305 is only adjusted the output multiple of amplifier 303, and the multiplication factor of its hardware itself is not adjusted, so time audio file to be played multiplication factor be the multiplication factor (initial multiplication factor) of hardware itself.
In the present embodiment, when sound-volume control system is adjusted in the actual multiplication factor for the treatment of displaying audio file, considered user's the wish of listening to, and the restriction of the high-amplification-factor of amplifier, between the actual multiplication factor limit value first threshold of audio file to be played and Second Threshold, sound-volume control system can be controlled the volume of audio file to be played more accurately, itself and normal play volume are more or less the same, make user in the situation that manually not adjusting amplifier magnification ratio, to be similar to consistent volume, listen to multiple audio files.
Although the present invention discloses as above, the present invention is not defined in this.Any those skilled in the art, without departing from the spirit and scope of the present invention, all can make various changes or modifications, and therefore protection scope of the present invention should be as the criterion with claim limited range.
Claims (10)
1. a method for controlling volume, is characterized in that, comprising:
Obtain audio file, initial multiplication factor, the reference amplitude of audio file and the amplitude of audio file to be played;
When described initial multiplication factor is non-vanishing, according to the difference of the amplitude of audio file to be played and reference amplitude, determine the adjustment parameter of multiplication factor;
Calculate described initial multiplication factor and described adjustment parameter and, to obtain actual multiplication factor, and with actual multiplication factor, described audio file to be played is play.
2. method for controlling volume as claimed in claim 1, is characterized in that, determines that the adjustment parameter of multiplication factor comprises according to the difference of the amplitude of audio file to be played and reference amplitude:
Calculate the poor of the amplitude of described audio file to be played and reference amplitude;
According to the corresponding relation of difference of vibration and adjustment parameter, determine described adjustment parameter.
3. method for controlling volume as claimed in claim 1, is characterized in that, calculate described initial multiplication factor and described adjustment parameter and, to obtain actual multiplication factor, comprise:
When described initial multiplication factor and described adjustment parameter and while being less than or equal to first threshold, described actual multiplication factor equals first threshold;
When described initial multiplication factor and described adjustment parameter and when being greater than first threshold and being less than Second Threshold, described actual multiplication factor equal described initial multiplication factor and described adjustment parameter and;
When described initial multiplication factor and described adjustment parameter and while being greater than or equal to Second Threshold, described actual multiplication factor equals Second Threshold.
4. method for controlling volume as claimed in claim 1, it is characterized in that, the amplitude of described audio file to be played is the mean amplitude of tide of described audio file to be played, the reference amplitude of described audio file is the mean amplitude of tide of initial play audio file, and described initial multiplication factor is the multiplication factor of initial play audio file.
5. a sound-volume control system, is characterized in that, comprising:
Acquisition module, for obtaining audio file, initial multiplication factor, the reference amplitude of audio file and the amplitude of audio file to be played;
Processing module, for when described initial multiplication factor is non-vanishing, determines the adjustment parameter of multiplication factor according to the difference of the amplitude of audio file to be played and reference amplitude;
Output module, for calculate described initial multiplication factor and described adjustment parameter and, to obtain actual multiplication factor, and with actual multiplication factor, described audio file to be played is play.
6. sound-volume control system as claimed in claim 5, is characterized in that, described acquisition module comprises:
Audio frequency provides module, and for obtaining audio file, described audio file comprises initial play audio file and audio file to be played;
Acquisition of information module, provides module to be connected with described audio frequency, for obtaining the reference amplitude of initial multiplication factor, audio file and the amplitude of audio file to be played.
7. sound-volume control system as claimed in claim 5, is characterized in that, described processing module comprises:
Memory module, for storing difference of vibration and adjusting the corresponding relation of parameter, initial multiplication factor, the reference amplitude of audio file and the amplitude of audio file to be played;
Parameter acquisition module, be connected with described memory module, for when described initial multiplication factor is non-vanishing, calculates the difference of amplitude and the reference amplitude of audio file to be played, and according to the corresponding relation of difference of vibration and adjustment parameter, determine the adjustment parameter of multiplication factor.
8. sound-volume control system as claimed in claim 5, is characterized in that, described output module comprises:
Computing module, for calculate described initial multiplication factor and described adjustment parameter and, to obtain actual multiplication factor;
Amplifier, amplifies for the amplitude to audio file;
Adjusting module, is connected with described computing module and described amplifier, for the multiplication factor of described amplifier is adjusted to actual multiplication factor;
Player, is connected with described amplifier, for described audio file to be played being play with actual multiplication factor.
9. sound-volume control system as claimed in claim 8, is characterized in that, described computing module comprises:
Summation module, for calculate described initial multiplication factor and described adjustment parameter and;
Value module, for when described initial multiplication factor and described adjustment parameter and while being less than or equal to first threshold, described actual multiplication factor is got first threshold; When described initial multiplication factor and described adjustment parameter and when being greater than first threshold and being less than Second Threshold, described actual multiplication factor get described initial multiplication factor and described adjustment parameter and; When described initial multiplication factor and described adjustment parameter and while being greater than or equal to Second Threshold, described actual multiplication factor is got Second Threshold.
10. sound-volume control system as claimed in claim 5, it is characterized in that, the amplitude of described audio file to be played is the mean amplitude of tide of described audio file to be played, the reference amplitude of described audio file is the mean amplitude of tide of initial play audio file, and described initial multiplication factor is the multiplication factor of initial play audio file.
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| CN107690026A (en) * | 2017-08-15 | 2018-02-13 | 维沃移动通信有限公司 | A kind of signal processing method and mobile terminal |
| CN107690026B (en) * | 2017-08-15 | 2020-10-27 | 维沃移动通信有限公司 | Signal processing method and mobile terminal |
| CN110731087A (en) * | 2017-08-18 | 2020-01-24 | Oppo广东移动通信有限公司 | Volume adjusting method and device, mobile terminal and storage medium |
| CN107506168A (en) * | 2017-08-18 | 2017-12-22 | 广东欧珀移动通信有限公司 | volume adjusting method, device, terminal device and storage medium |
| CN107566618A (en) * | 2017-08-18 | 2018-01-09 | 广东欧珀移动通信有限公司 | volume adjusting method, device, terminal device and storage medium |
| CN107479852A (en) * | 2017-08-18 | 2017-12-15 | 广东欧珀移动通信有限公司 | volume adjusting method, device, terminal device and storage medium |
| WO2019033940A1 (en) * | 2017-08-18 | 2019-02-21 | Oppo广东移动通信有限公司 | Volume adjustment method and apparatus, terminal device, and storage medium |
| CN107479851B (en) * | 2017-08-18 | 2019-07-16 | Oppo广东移动通信有限公司 | Volume adjusting method, device, terminal device and storage medium |
| CN107483734A (en) * | 2017-08-18 | 2017-12-15 | 广东欧珀移动通信有限公司 | volume adjusting method, device, terminal device and storage medium |
| CN107479851A (en) * | 2017-08-18 | 2017-12-15 | 广东欧珀移动通信有限公司 | volume adjusting method, device, terminal device and storage medium |
| CN107566618B (en) * | 2017-08-18 | 2021-01-22 | Oppo广东移动通信有限公司 | Volume adjusting method and device, terminal equipment and storage medium |
| CN107506168B (en) * | 2017-08-18 | 2022-06-14 | Oppo广东移动通信有限公司 | Volume adjusting method and device, terminal equipment and storage medium |
| CN110731087B (en) * | 2017-08-18 | 2023-11-10 | Oppo广东移动通信有限公司 | Volume adjusting method and device, mobile terminal and storage medium |
| CN109067955A (en) * | 2018-07-26 | 2018-12-21 | 上海与德通讯技术有限公司 | The calibration method and terminal of level of sound volume and loudness |
| CN111986696A (en) * | 2020-08-27 | 2020-11-24 | 湖南融视文化创意有限公司 | Method for efficiently processing song volume balance |
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