CN104410379A - A volume adjusting method - Google Patents
A volume adjusting method Download PDFInfo
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- CN104410379A CN104410379A CN201410594466.9A CN201410594466A CN104410379A CN 104410379 A CN104410379 A CN 104410379A CN 201410594466 A CN201410594466 A CN 201410594466A CN 104410379 A CN104410379 A CN 104410379A
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Abstract
Embodiments of the invention disclose a volume adjusting method, the method comprising: collecting a characteristic parameter of a current audio signal; comparing the characteristic parameter with a reference threshold corresponding to a current volume magnitude; and, in accordance with a comparison result, adjusting gain of the current volume magnitude. Embodiments of the invention may set volume gain corresponding to volume adjustment in accordance with a parameter of an audio file, and thus enhance user experience.
Description
Technical field
The present invention relates to electronic technology field, be specifically related to a kind of volume adjusting method.
Background technology
Progressively extensive along with multimedia application, it is more and more higher that user listens to multimedia frequency.The mode obtaining multimedia resource has a lot, the amplitude of the volume of the multimedia file obtained by different channel own is varied, such as, the amplitude several dB of decay (during broadcasting, volume is less than normal) that meeting is artificial when recording of some song volumes, some songs are through special processing (broadcasting volume is abnormal), the then artificial several dB of increase (during broadcasting, volume is bigger than normal) had, and, even same song, also may be different at the amplitude of different its volume of paragraph.
In prior art, audio gain corresponding to every lattice volume is changeless, can not change along with the amplitude variations of multimedia file sound intermediate frequency signal, when listening to different multimedia files, terminal arranges identical volume lattice number, and the sound that user hears varies, user is caused often to need manually to adjust volume to the custom making volume meet oneself.
Summary of the invention
Embodiments provide a kind of volume adjusting method, volume gain corresponding to volume adjusting can be set according to the parameter of audio file, promote Consumer's Experience.
Embodiments provide a kind of volume adjusting method, described method comprises:
Gather the characteristic parameter of current audio signals;
Described characteristic parameter is compared with the parameter threshold corresponding with current volume lattice number preset;
According to comparative result, regulate the gain of described current volume lattice number.
The characteristic parameter of the current audio signals collected compares with the parameter threshold corresponding with current volume lattice number preset by the embodiment of the present invention, according to comparative result, regulate the gain of this current volume lattice number, thus volume gain corresponding to volume adjusting can be set according to the parameter of audio file, promote Consumer's Experience.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the first embodiment schematic flow sheet of a kind of volume adjusting method that the embodiment of the present invention provides;
Fig. 2 is the second embodiment schematic flow sheet of a kind of volume adjusting method that the embodiment of the present invention provides;
Fig. 3 is the 3rd embodiment schematic flow sheet of a kind of volume adjusting method that the embodiment of the present invention provides;
Fig. 4 is the first example structure schematic diagram of a kind of terminal that the embodiment of the present invention provides;
Fig. 5 is the second example structure schematic diagram of a kind of terminal that the embodiment of the present invention provides;
Fig. 6 is the 3rd example structure schematic diagram of a kind of terminal that the embodiment of the present invention provides;
Fig. 7 is the 4th example structure schematic diagram of a kind of terminal that the embodiment of the present invention provides.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Playback terminal in the embodiment of the present invention can comprise the terminal that PC, smart mobile phone (as Android phone, iOS mobile phone, Windows Phone mobile phone etc.), MP3, MP4, MP5, panel computer, palmtop PC, mobile internet device (MID, Mobile Internet Devices) or Wearable etc. possess multi-media player function.
Referring to Fig. 1, is the first embodiment schematic flow sheet of a kind of volume adjusting method that the embodiment of the present invention provides.As shown in Figure 1, the method can comprise the following steps:
S101, playback terminal gather the characteristic parameter of current audio signals.
In specific implementation, the source of above-mentioned audio signal comprises: at least one in song files, video file, network flow-medium, FM broadcast, voice call and video conference.Above-mentioned characteristic parameter refers to can the design parameter of quantization means audio signal sound feature, and characteristic parameter can be the amplitude of above-mentioned audio signal or the frequency of above-mentioned audio signal, and the embodiment of the present invention is not construed as limiting.The lasting duration gathered can for being switched to a period of time after next multimedia file, during also can being the broadcasting of whole multimedia file.
First playback terminal gathered the characteristic parameter of multimedia file sound intermediate frequency signal before playing the multimedia file of specifying by the mode of sampling, sample mode wherein can be analog-to-digital conversion (ADC, Analog-to-Digital Converting) to sample or frequency sampling, the concrete sample mode embodiment of the present invention is not construed as limiting.
Described characteristic parameter compares with the default parameter threshold corresponding with current volume lattice number by S102, playback terminal.
In specific implementation, the system sound volume of playback terminal has multiple rank, and each volume rank can distinguish a corresponding volume lattice number.After playback terminal starts, system can retain when shutting down last time arrange volume lattice number, if user does not reset, then using this volume lattice number as current volume lattice number, if user resets system sound volume, then using the volume lattice number after arranging as current volume lattice number.Above-mentioned parameter threshold value refers to the reference point of volume in comfort standard ensureing sound, can adopt the value of system default, also in use can carry out self-defined setting by user.
The characteristic parameter collected in step S101 compares with the parameter threshold corresponding with current volume lattice number preset by playback terminal, carries out to provide playback terminal in step S103 the foundation regulated.
S103, according to comparative result, playback terminal regulates the gain of described current volume lattice number.
In specific implementation, after playback terminal starts, every lattice volume of system all correspond to the gain of an acquiescence.Playback terminal automatically regulates the gain of above-mentioned current volume lattice number according to comparative result in step s 102, in volume before and after switching multi-media file is remained at scope that user feels comfortable.
In the embodiment of the present invention, the characteristic parameter of the current audio signals collected compares with the parameter threshold corresponding with current volume lattice number preset by playback terminal; According to comparative result, playback terminal regulates the gain of this current volume lattice number, thus can set volume gain corresponding to volume adjusting according to the parameter of audio file, promotes Consumer's Experience.
Referring to Fig. 2, is the second embodiment schematic flow sheet of a kind of volume adjusting method that the embodiment of the present invention provides.As shown in Figure 2, the method can comprise the following steps:
S201, setting store the corresponding parameter threshold of every lattice volume, described parameter threshold comprises at least one in amplitude threshold and frequency threshold.
In specific implementation, the system sound volume of playback terminal has multiple rank, and each volume rank can distinguish a corresponding volume lattice number.Above-mentioned parameter threshold value refers to and ensures the reference point of wave volume in comfort standard, can adopt the value of system default, also in use can carry out self-defined setting by user.The parameter threshold set is stored in for follow-up comparison in the internal memory of playback terminal, and above-mentioned parameter threshold value comprises at least one in amplitude threshold and frequency threshold.
The characteristic parameter of S202, collection current audio signals, described characteristic parameter comprises at least one in the amplitude of described current audio signals and the frequency of described current audio signals.
In specific implementation, the source of above-mentioned audio signal comprises: at least one in song files, video file, network flow-medium, FM broadcast, voice call and video conference.Above-mentioned characteristic parameter refers to can the design parameter of quantization means audio signal sound feature, and characteristic parameter can be the amplitude of above-mentioned audio signal or the frequency of above-mentioned audio signal, and the embodiment of the present invention is not construed as limiting.The lasting duration gathered can for being switched to a period of time after next multimedia file, during also can being the broadcasting of whole multimedia file.
Playback terminal gathers the characteristic parameter of multimedia file sound intermediate frequency signal before playing the multimedia file of specifying or during play multimedia file by the mode of sampling, sample mode wherein can be analog-to-digital conversion (ADC, Analog-to-Digital Converting) to sample or frequency sampling, the concrete sample mode embodiment of the present invention is not construed as limiting.
The mean value of the characteristic parameter of the described current audio signals collected in S203, calculating predetermined time period.
In specific implementation, above-mentioned predetermined time period can be 3 seconds, 5 seconds or 10 seconds etc., and the concrete duration embodiment of the present invention is not construed as limiting.The characteristic parameter of playback terminal above-mentioned current audio signals of continuous acquisition in the time span preset, after collection, calculates in above-mentioned predetermined time period the mean value of the characteristic parameter of the above-mentioned current audio signals collected.
S204, described mean value to be compared with the default parameter threshold corresponding with current volume lattice number.
In specific implementation, because the audio signal in each multimedia file generally can exist high pitch (or high frequency) and bass (or low frequency) part, be easy to produce erroneous judgement if adopt descant (or highest frequency) and double bass (or low-limit frequency) to compare, meanwhile, the impact of noise is difficult to avoid.Adopt the mean value in a period of time to compare more reasonable, meanwhile, the interference of noise can be got rid of to a great extent, make comparative result more accurate.The parameter threshold corresponding with current volume lattice number arranged in the mean value calculated in step S203 and step S201 compares by playback terminal, carries out to provide playback terminal in step S207 ~ S210 the foundation regulated.
If the described characteristic parameter of S205 comprises the amplitude of described current audio signals, then perform step S207 ~ S208.
If the described characteristic parameter of S206 comprises the frequency of described current audio signals, then perform step S209 ~ S210.
If the described mean value of S207 is greater than described amplitude threshold, then reduce the gain of described current volume lattice number.
In specific implementation, when playback terminal judges that above-mentioned mean value is greater than above-mentioned amplitude threshold, show that the acoustic amplitudes of present multimedia file sound intermediate frequency signal itself is bigger than normal, when causing directly playing, sound is higher, the hearing of user can be damaged, make user feel uncomfortable, now, playback terminal can reduce gain corresponding to current volume lattice number automatically, with the custom making actual play sound size out meet user.
Gain-adjusted scheme concrete in the embodiment of the present invention is as shown in table 1:
Table 1
| Volume lattice number | Gain reduces | Default gain | Gain increases |
| One | 1dB | 3dB | 5dB |
| Two | 3dB | 5dB | 7dB |
| Three | 6dB | 8dB | 10dB |
| Four | 10dB | 12dB | 14dB |
| Five | 15dB | 17dB | 19dB |
Illustrate for song A, the volume lattice number of playback terminal has five lattice, max volume is five lattice, minimal volume is zero lattice, arranging volume lattice number after startup is three lattice, namely current volume lattice number is three lattice, the default gain that current volume lattice number is corresponding is 8dB, song A is artificial when recording adds several dB (during broadcasting, volume is bigger than normal), the amplitude threshold corresponding with current volume lattice number is set to 500mV, above-mentioned predetermined time period is set to 5 seconds, and the minimum resolution regulating gain is 1dB.Before song A is played out, first playback terminal calculates the mean value of the amplitude of the song A collected in 5 seconds, result is 600mV, now the mean value 600mV of the amplitude of song A is greater than the above-mentioned amplitude threshold 500mV corresponding with current volume lattice number, then according to table 1, gain corresponding for current volume lattice number is reduced to 6dB by default gain 8dB by playback terminal, and after regulating, song A plays back by playback terminal again, and sound now get used to regard to the sense of hearing meeting user.It can be that step pitch reduces to realize successively with 1dB that gain corresponding for current volume lattice number is reduced to 6dB by 8dB, and also can directly reduce 2dB to realize, the specific implementation embodiment of the present invention be not construed as limiting.
If the described mean value of S208 is less than described amplitude threshold, then increase the gain of described current volume lattice number.
In specific implementation, when playback terminal judges that above-mentioned mean value is less than above-mentioned amplitude threshold, show that the acoustic amplitudes of present multimedia file sound intermediate frequency signal itself is less than normal, when causing directly playing, sound is on the low side, user can be made to listen not clear, now, playback terminal automatically can increase gain corresponding to current volume lattice number until gain corresponding to above-mentioned current volume lattice number equals gain corresponding to above-mentioned amplitude threshold, with the custom making actual play sound size out meet user.
Illustrate for song B, the volume lattice number of playback terminal has five lattice, max volume is five lattice, minimal volume is zero lattice, arranging volume lattice number after startup is three lattice, namely current volume lattice number is three lattice, the default gain that current volume lattice number is corresponding is 8dB, song B is artificial when recording reduces several dB (during broadcasting, volume is less than normal), the amplitude threshold corresponding with current volume lattice number is set to 500mV, above-mentioned predetermined time period is set to 5 seconds, and the minimum resolution regulating gain is 1dB.Before song B is played out, first playback terminal calculates the mean value of the amplitude of the song B collected in 5 seconds, result is 400mV, now the mean value 400mV of the amplitude of song B is less than the above-mentioned amplitude threshold 500mV corresponding with current volume lattice number, then according to table 1, gain corresponding for current volume lattice number is increased to 10dB by default gain 8dB by playback terminal, and after regulating, song B plays back by playback terminal again, and sound now get used to regard to the sense of hearing meeting user.It can be that step pitch increases successively and realizes with 1dB that gain corresponding for current volume lattice number is increased to 10dB by 8dB, and also can directly increase 2dB to realize, the specific implementation embodiment of the present invention be not construed as limiting.
If the described mean value of S209 is greater than described frequency threshold, then reduce the gain of described current volume lattice number.
If the described mean value of S210 is less than described frequency threshold, then increase the gain of described current volume lattice number.
In the embodiment of the present invention, first playback terminal arranges the parameter threshold corresponding with every lattice volume and preserves; Playback terminal gathers the characteristic parameter of current audio signals and calculates the mean value of the characteristic parameter of this current audio signals collected in predetermined time period; Then, this mean value compares with the parameter threshold corresponding with current volume lattice number preset by playback terminal, if this mean value is greater than this parameter threshold, then playback terminal reduces the gain of current volume lattice number, if this mean value is less than this parameter threshold, then playback terminal increases the gain of current volume lattice number.The embodiment of the present invention allows User Defined to arrange the parameter threshold corresponding with every lattice volume, improves the flexibility of playback terminal; Compare with the mean value in a period of time and the parameter threshold preset, make comparative result more accurately rationally; Reduce according to comparative result playback terminal or increase the gain of this current volume lattice number, thus volume gain corresponding to volume adjusting can be set according to the parameter of audio file, promoting Consumer's Experience.
Referring to Fig. 3, is the 3rd embodiment schematic flow sheet of a kind of volume adjusting method that the embodiment of the present invention provides.As shown in Figure 3, the method can comprise the following steps:
S301, gather the electrical parameter of current audio signals with the first sampling rate.
In specific implementation, the source of above-mentioned audio signal comprises: at least one in song files, video file, network flow-medium, FM broadcast, voice call and video conference.Above-mentioned electrical parameter comprises at least one in current value, magnitude of voltage and performance number.Playback terminal is sampled to above-mentioned current audio signals with the first sampling rate by analog-to-digital conversion (ADC, Analog-to-DigitalConverting), obtains the electrical parameter of above-mentioned current audio signals.Wherein, above-mentioned first sampling rate can be 8KHz, 11.025KHz, 22.05KHz, 44.1KHz, 48KHz or 96KHz etc., and concrete sampling rate is determined according to practical application, and the embodiment of the present invention is not construed as limiting.
S302, calculate the amplitude of described current audio signals according to described electrical parameter.
In specific implementation, if above-mentioned electrical parameter comprises current value I, then the resistance R of sampling resistor and the product R*I of above-mentioned current value I is the amplitude of above-mentioned current audio signals; If above-mentioned electrical parameter comprises magnitude of voltage U, then above-mentioned magnitude of voltage U is the amplitude of above-mentioned current audio signals; If above-mentioned electrical parameter comprises performance number P, then the square root of the resistance R product of performance number P and above-mentioned sampling resistor
be the amplitude of above-mentioned current audio signals.
The amplitude of S303, the interior total degree gathered of record predetermined time period and the described current audio signals at every turn collected.
In specific implementation, the total degree n gathered in playback terminal record predetermined time period t and the amplitude A1 of all sampled point current audio signals, A2, A3 ..., An.
S304, calculate in described predetermined time period the mean value of the amplitude of the described current audio signals collected according to the amplitude of the described described current audio signals collected and described total degree at every turn.
In specific implementation, playback terminal to the amplitude A1 of all sampled point current audio signals gathered in the predetermined time period t recorded in step S303, A2, A3 ..., An sues for peace
=A1+A2+A3+ ... + An, then obtains the mean value of amplitude
S305, described mean value to be compared with the default amplitude threshold corresponding with current volume lattice number.
In specific implementation, because the audio signal in each multimedia file generally can exist high pitch and bass part, be easy to produce erroneous judgement if adopt descant and double bass to compare, meanwhile, the impact of noise is difficult to avoid.Adopt the mean value in a period of time to compare more reasonable, meanwhile, the interference of noise can be got rid of to a great extent, make comparative result more accurate.The mean value calculated in step s 304 compares with the amplitude threshold corresponding with current volume lattice number preset by playback terminal, carries out to provide playback terminal in step S306 ~ S307 the foundation regulated.
If the described mean value of S306 is greater than described amplitude threshold, then reduce the gain of described current volume lattice number.
In specific implementation, the step S207 in the second embodiment of a kind of volume adjusting method that the specific implementation of this step can provide see the embodiment of the present invention, does not repeat them here.
If the described mean value of S307 is less than described amplitude threshold, then increase the gain of described current volume lattice number.
In specific implementation, the step S208 in the second embodiment of a kind of volume adjusting method that the specific implementation of this step can provide see the embodiment of the present invention, does not repeat them here.
In the embodiment of the present invention, playback terminal gathers the electrical parameter of current audio signals with the first sampling rate and calculates the amplitude of this current audio signals according to this electrical parameter; Then, the amplitude of the interior total degree gathered of playback terminal record predetermined time period and this current audio signals at every turn collected, calculates the mean value of the amplitude of this current audio signals collected in this predetermined time period according to amplitude and this total degree of this current audio signals collected at every turn; This mean value compares with the amplitude threshold corresponding with current volume lattice number preset by playback terminal, if this mean value is greater than this amplitude threshold, then playback terminal reduces the gain of current volume lattice number, if this mean value is less than this amplitude threshold, then playback terminal increases the gain of current volume lattice number.The embodiment of the present invention mean value in a period of time and the amplitude threshold preset compare, and make comparative result more accurately rationally; Reduce according to comparative result playback terminal or increase the gain of this current volume lattice number, thus volume gain corresponding to volume adjusting can be set according to the parameter of audio file, promoting Consumer's Experience.
Referring to Fig. 4, is the first example structure schematic diagram of a kind of terminal that the embodiment of the present invention provides.As shown in Figure 4, this terminal can comprise:
First collecting unit 10, for gathering the characteristic parameter of current audio signals.
In specific implementation, the source of above-mentioned audio signal comprises: at least one in song files, video file, network flow-medium, FM broadcast, voice call and video conference.Above-mentioned characteristic parameter refers to can the design parameter of quantization means audio signal sound feature, and characteristic parameter can be the amplitude of above-mentioned audio signal or the frequency of above-mentioned audio signal, and the embodiment of the present invention is not construed as limiting.The lasting duration gathered can for being switched to a period of time after next multimedia file, during also can being the broadcasting of whole multimedia file.
First playback terminal gathered the characteristic parameter of multimedia file sound intermediate frequency signal before playing the multimedia file of specifying by the mode of sampling, sample mode wherein can be analog-to-digital conversion (ADC, Analog-to-Digital Converting) to sample or frequency sampling, the concrete sample mode embodiment of the present invention is not construed as limiting.Step S101 in first embodiment of a kind of volume adjusting method that the specific implementation of above-mentioned first collecting unit 10 can provide see the embodiment of the present invention, does not repeat them here.
First comparing unit 20, for comparing described characteristic parameter with the parameter threshold corresponding with current volume lattice number preset.
In specific implementation, the system sound volume of playback terminal has multiple rank, and each volume rank can distinguish a corresponding volume lattice number.After playback terminal starts, system can retain when shutting down last time arrange volume lattice number, if user does not reset, then using this volume lattice number as current volume lattice number, if user resets system sound volume, then using the volume lattice number after arranging as current volume lattice number.Above-mentioned parameter threshold value refers to and ensures the reference point of wave volume in a comfort standard, can adopt the value of system default, also in use can carry out self-defined setting by user.
The characteristic parameter collected compares with the parameter threshold corresponding with current volume lattice number preset by playback terminal, carries out the foundation regulated to provide playback terminal.Step S102 in first embodiment of a kind of volume adjusting method that the specific implementation of above-mentioned first comparing unit 20 can provide see the embodiment of the present invention, does not repeat them here.
Regulon 30, for the comparative result according to described first comparing unit 20, regulates the gain of described current volume lattice number.
In specific implementation, after playback terminal starts, every lattice volume of system all correspond to the gain of an acquiescence.Playback terminal according to the gain characteristic parameter collected and the comparative result that compares of the parameter threshold corresponding with current volume lattice number preset automatically being regulated above-mentioned current volume lattice number, in volume before and after switching multi-media file is remained at scope that user feels comfortable.Step S103 in first embodiment of a kind of volume adjusting method that the specific implementation of above-mentioned regulon 30 can provide see the embodiment of the present invention, does not repeat them here.
In the embodiment of the present invention, first collecting unit 10 gathers the characteristic parameter of current audio signals, and the characteristic parameter of the current audio signals collected by the first collecting unit 10 by the first comparing unit 20 compares with the parameter threshold corresponding with current volume lattice number preset; According to comparative result, regulon 30 regulates the gain of this current volume lattice number, thus can set volume gain corresponding to volume adjusting according to the parameter of audio file, promotes Consumer's Experience.
Referring to Fig. 5, is the second example structure schematic diagram of a kind of terminal that the embodiment of the present invention provides.As shown in Figure 5, this terminal can comprise:
Setting unit 40, for arranging the corresponding parameter threshold of every lattice volume, described parameter threshold comprises at least one in amplitude threshold and frequency threshold.
In specific implementation, the system sound volume of playback terminal has multiple rank, and each volume rank can distinguish a corresponding volume lattice number.Above-mentioned parameter threshold value refers to and ensures the reference point of wave volume in a comfort standard, can adopt the value of system default, also in use can carry out self-defined setting by user.The parameter threshold set is stored in for follow-up comparison in the internal memory of playback terminal, and above-mentioned parameter threshold value comprises at least one in amplitude threshold and frequency threshold.Step S201 in second embodiment of a kind of volume adjusting method that the specific implementation of above-mentioned setting unit 40 can provide see the embodiment of the present invention, does not repeat them here.
Memory cell 50, the parameter threshold that the every lattice volume for storing the setting of described setting unit 40 is corresponding.
In specific implementation, the step S201 in the second embodiment of a kind of volume adjusting method that the specific implementation of said memory cells 50 can provide see the embodiment of the present invention, does not repeat them here.
First collecting unit 10, for gathering the characteristic parameter of current audio signals, described characteristic parameter comprises at least one in the amplitude of described current audio signals and the frequency of described current audio signals.
In specific implementation, the source of above-mentioned audio signal comprises: at least one in song files, video file, network flow-medium, FM broadcast, voice call and video conference.Above-mentioned characteristic parameter refers to can the design parameter of quantization means audio signal sound feature, and characteristic parameter can be the amplitude of above-mentioned audio signal or the frequency of above-mentioned audio signal, and the embodiment of the present invention is not construed as limiting.The lasting duration gathered can for being switched to a period of time after next multimedia file, during also can being the broadcasting of whole multimedia file.
First playback terminal gathered the characteristic parameter of multimedia file sound intermediate frequency signal before playing the multimedia file of specifying by the mode of sampling, sample mode wherein can be analog-to-digital conversion (ADC, Analog-to-Digital Converting) to sample or frequency sampling, the concrete sample mode embodiment of the present invention is not construed as limiting.Step S202 in second embodiment of a kind of volume adjusting method that the specific implementation of above-mentioned first collecting unit 10 can provide see the embodiment of the present invention, does not repeat them here.
First comparing unit 20, for comparing described characteristic parameter with the parameter threshold corresponding with current volume lattice number preset.
Described first comparing unit 20 specifically can comprise:
First computing unit 201, for calculating the mean value of the characteristic parameter of the described current audio signals collected in predetermined time period.
In specific implementation, above-mentioned predetermined time period can be 3 seconds, 5 seconds or 10 seconds etc., and the concrete duration embodiment of the present invention is not construed as limiting.The characteristic parameter of playback terminal above-mentioned current audio signals of continuous acquisition in the time span preset, after collection, calculates in above-mentioned predetermined time period the mean value of the characteristic parameter of the above-mentioned current audio signals collected.Step S203 in second embodiment of a kind of volume adjusting method that the specific implementation of above-mentioned first computing unit 201 can provide see the embodiment of the present invention, does not repeat them here.
Second comparing unit 202, for comparing described mean value with the parameter threshold corresponding with current volume lattice number preset.
In specific implementation, because the audio signal in each multimedia file generally can exist high pitch (or high frequency) and bass (or low frequency) part, be easy to produce erroneous judgement if adopt descant (or highest frequency) and double bass (or low-limit frequency) to compare, meanwhile, the impact of noise is difficult to avoid.Adopt the mean value in a period of time to compare more reasonable, meanwhile, the interference of noise can be got rid of to a great extent, make comparative result more accurate.The mean value calculated compares with the parameter threshold corresponding with current volume lattice number of setting by playback terminal.Step S204 in second embodiment of a kind of volume adjusting method that the specific implementation of above-mentioned second comparing unit 202 can provide see the embodiment of the present invention, does not repeat them here.
Judging unit 60, for judge described characteristic parameter whether comprise described current audio signals amplitude and for judging whether described characteristic parameter comprises the frequency of described current audio signals.
Regulon 30, for the comparative result according to described second comparing unit 202, regulates the gain of described current volume lattice number.
Described regulon 30 specifically can comprise:
Reduce unit 301, for at the comparative result of described second comparing unit 202 be described mean value be greater than described amplitude threshold time, reduce described current volume lattice number gain and at the comparative result of described second comparing unit 202 be described mean value be greater than described frequency threshold time, reduce the gain of described current volume lattice number.
In specific implementation, when playback terminal judges that above-mentioned mean value is greater than above-mentioned amplitude threshold, show that the acoustic amplitudes of present multimedia file sound intermediate frequency signal itself is bigger than normal, when causing directly playing, sound is higher, the hearing of user can be damaged, make user feel uncomfortable, now, playback terminal can reduce gain corresponding to current volume lattice number automatically, with the custom making actual play sound size out meet user.
Gain-adjusted scheme concrete in the embodiment of the present invention is as shown in table 1:
Table 1
| Volume lattice number | Gain reduces | Default gain | Gain increases |
| One | 1dB | 3dB | 5dB |
| Two | 3dB | 5dB | 7dB |
| Three | 6dB | 8dB | 10dB |
| Four | 10dB | 12dB | 14dB |
| Five | 15dB | 17dB | 19dB |
Illustrate for song A, the volume lattice number of playback terminal has five lattice, max volume is five lattice, minimal volume is zero lattice, arranging volume lattice number after startup is three lattice, namely current volume lattice number is three lattice, the default gain that current volume lattice number is corresponding is 8dB, song A is artificial when recording adds several dB (during broadcasting, volume is bigger than normal), the amplitude threshold corresponding with current volume lattice number is set to 500mV, above-mentioned predetermined time period is set to 5 seconds, and the minimum resolution regulating gain is 1dB.Before song A is played out, first playback terminal calculates the mean value of the amplitude of the song A collected in 5 seconds, result is 600mV, now the mean value 600mV of the amplitude of song A is greater than the above-mentioned amplitude threshold 500mV corresponding with current volume lattice number, then according to table 1, gain corresponding for current volume lattice number is reduced to 6dB by default gain 8dB by playback terminal, and after regulating, song A plays back by playback terminal again, and sound now get used to regard to the sense of hearing meeting user.It can be that step pitch reduces to realize successively with 1dB that gain corresponding for current volume lattice number is reduced to 6dB by 8dB, and also can directly reduce 2dB to realize, the specific implementation embodiment of the present invention be not construed as limiting.Step S207 in second embodiment of a kind of volume adjusting method that the specific implementation of above-mentioned reduction unit 301 can provide see the embodiment of the present invention, does not repeat them here.
Increase unit 302, for at the comparative result of described second comparing unit 202 be described mean value be less than described amplitude threshold time, increase described current volume lattice number gain and at the comparative result of described second comparing unit 202 be described mean value be less than described frequency threshold time, increase the gain of described current volume lattice number.
In specific implementation, when playback terminal judges that above-mentioned mean value is less than above-mentioned amplitude threshold, show that the acoustic amplitudes of present multimedia file sound intermediate frequency signal itself is less than normal, when causing directly playing, sound is on the low side, user can be made to listen not clear, now, playback terminal automatically can increase gain corresponding to current volume lattice number until gain corresponding to above-mentioned current volume lattice number equals gain corresponding to above-mentioned amplitude threshold, with the custom making actual play sound size out meet user.
Illustrate for song B, the volume lattice number of playback terminal has five lattice, max volume is five lattice, minimal volume is zero lattice, arranging volume lattice number after startup is three lattice, namely current volume lattice number is three lattice, the default gain that current volume lattice number is corresponding is 8dB, song B is artificial when recording reduces several dB (during broadcasting, volume is less than normal), the amplitude threshold corresponding with current volume lattice number is set to 500mV, above-mentioned predetermined time period is set to 5 seconds, and the minimum resolution regulating gain is 1dB.Before song B is played out, first playback terminal calculates the mean value of the amplitude of the song B collected in 5 seconds, result is 400mV, now the mean value 400mV of the amplitude of song B is less than the above-mentioned amplitude threshold 500mV corresponding with current volume lattice number, then according to table 1, gain corresponding for current volume lattice number is increased to 10dB by default gain 8dB by playback terminal, and after regulating, song B plays back by playback terminal again, and sound now get used to regard to the sense of hearing meeting user.It can be that step pitch increases successively and realizes with 1dB that gain corresponding for current volume lattice number is increased to 10dB by 8dB, and also can directly increase 2dB to realize, the specific implementation embodiment of the present invention be not construed as limiting.Step S208 in second embodiment of a kind of volume adjusting method that the specific implementation of above-mentioned increase unit 302 can provide see the embodiment of the present invention, does not repeat them here.
In the embodiment of the present invention, first setting unit 40 arranges the corresponding parameter threshold of every lattice volume and is preserved by memory cell 50; First collecting unit 10 gathers the characteristic parameter of current audio signals and is calculated the mean value of the characteristic parameter of this current audio signals collected in predetermined time period by the first computing unit 201; Then, this mean value compares with the parameter threshold corresponding with current volume lattice number preset by the second comparing unit 202; Judging unit 60 judges whether this characteristic parameter comprises the amplitude of current audio signals or the frequency of current audio signals; When the judged result of judging unit 60 be this characteristic parameter comprise the frequency of the amplitude of current audio signals or current audio signals time, if this mean value is greater than this parameter threshold, then reduce the gain that unit 301 reduces current volume lattice number, if this mean value is less than this parameter threshold, then increase the gain that unit 302 increases current volume lattice number.The embodiment of the present invention allows User Defined to arrange the parameter threshold corresponding with every lattice volume, improves the flexibility of playback terminal; Compare with the mean value in a period of time and the parameter threshold preset, make comparative result more accurately rationally; Reduce according to comparative result playback terminal or increase the gain of this current volume lattice number, thus volume gain corresponding to volume adjusting can be set according to the parameter of audio file, promoting Consumer's Experience.
Referring to Fig. 6, is the 3rd example structure schematic diagram of a kind of terminal that the embodiment of the present invention provides.As shown in Figure 6, when above-mentioned characteristic parameter comprises the amplitude of current audio signals, this terminal can comprise:
First collecting unit 10, for gathering the amplitude of current audio signals.
Described first collecting unit 10 specifically can comprise:
Second collecting unit 101, for gathering the electrical parameter of current audio signals with the first sampling rate.
In specific implementation, the source of above-mentioned audio signal comprises: at least one in song files, video file, network flow-medium, FM broadcast, voice call and video conference.Above-mentioned electrical parameter comprises at least one in current value, magnitude of voltage and performance number.Playback terminal is sampled to above-mentioned current audio signals with the first sampling rate by analog-to-digital conversion (ADC, Analog-to-DigitalConverting), obtains the electrical parameter of above-mentioned current audio signals.Wherein, above-mentioned first sampling rate can be 8KHz, 11.025KHz, 22.05KHz, 44.1KHz, 48KHz or 96KHz etc., and concrete sampling rate is determined according to practical application, and the embodiment of the present invention is not construed as limiting.Step S301 in 3rd embodiment of a kind of volume adjusting method that the specific implementation of above-mentioned second collecting unit 101 can provide see the embodiment of the present invention, does not repeat them here.
3rd computing unit 102, for calculating the amplitude of described current audio signals according to described electrical parameter.
In specific implementation, if above-mentioned electrical parameter comprises current value I, then the resistance R of sampling resistor and the product R*I of above-mentioned current value I is the amplitude of above-mentioned current audio signals; If above-mentioned electrical parameter comprises magnitude of voltage U, then above-mentioned magnitude of voltage U is the amplitude of above-mentioned current audio signals; If above-mentioned electrical parameter comprises performance number P, then the square root of the resistance R product of performance number P and above-mentioned sampling resistor
be the amplitude of above-mentioned current audio signals.Step S302 in 3rd embodiment of a kind of volume adjusting method that the specific implementation of above-mentioned 3rd computing unit 102 can provide see the embodiment of the present invention, does not repeat them here.
First computing unit 201, for calculating the mean value of the amplitude of the described current audio signals collected in predetermined time period.
Described first computing unit 201 specifically can comprise:
Record cell 2011, for recording the amplitude of the total degree gathered in predetermined time period and the described current audio signals collected at every turn.
In specific implementation, the total degree n gathered in playback terminal record predetermined time period t and the amplitude A1 of all sampled point current audio signals, A2, A3 ..., An.Step S303 in 3rd embodiment of a kind of volume adjusting method that the specific implementation of above-mentioned record cell 2011 can provide see the embodiment of the present invention, does not repeat them here.
Second computing unit 2012, calculates in described predetermined time period the mean value of the amplitude of the described current audio signals collected for the amplitude of the described described current audio signals collected that records according to described record cell 2011 and described total degree at every turn.
In specific implementation, playback terminal to the amplitude A1 of all sampled point current audio signals gathered in the predetermined time period t of record, A2, A3 ..., An sues for peace
then the mean value of amplitude is obtained
step S304 in 3rd embodiment of a kind of volume adjusting method that the specific implementation of above-mentioned second computing unit 2012 can provide see the embodiment of the present invention, does not repeat them here.
Second comparing unit 202, for comparing described mean value with the amplitude threshold corresponding with current volume lattice number preset.
In specific implementation, because the audio signal in each multimedia file generally can exist high pitch and bass part, be easy to produce erroneous judgement if adopt descant and double bass to compare, meanwhile, the impact of noise is difficult to avoid.Adopt the mean value in a period of time to compare more reasonable, meanwhile, the interference of noise can be got rid of to a great extent, make comparative result more accurate.The mean value calculated compares with the amplitude threshold corresponding with current volume lattice number preset by playback terminal.Step S305 in 3rd embodiment of a kind of volume adjusting method that the specific implementation of above-mentioned second comparing unit 202 can provide see the embodiment of the present invention, does not repeat them here.
Regulon 30, for the comparative result according to described second comparing unit 202, regulates the gain of described current volume lattice number.
Described regulon 30 specifically can comprise:
Reduce unit 301, at the comparative result of described second comparing unit 202 be described mean value be greater than described amplitude threshold time, reduce the gain of described current volume lattice number.
In specific implementation, when playback terminal judges that above-mentioned mean value is greater than above-mentioned amplitude threshold, show that the acoustic amplitudes of present multimedia file sound intermediate frequency signal itself is bigger than normal, when causing directly playing, sound is higher, the hearing of user can be damaged, make user feel uncomfortable, now, playback terminal can reduce gain corresponding to current volume lattice number automatically, with the custom making actual play sound size out meet user.
Gain-adjusted scheme concrete in the embodiment of the present invention is as shown in table 1:
Table 1
| Volume lattice number | Gain reduces | Default gain | Gain increases |
| One | 1dB | 3dB | 5dB |
| Two | 3dB | 5dB | 7dB |
| Three | 6dB | 8dB | 10dB |
| Four | 10dB | 12dB | 14dB |
| Five | 15dB | 17dB | 19dB |
Illustrate for song A, the volume lattice number of playback terminal has five lattice, max volume is five lattice, minimal volume is zero lattice, arranging volume lattice number after startup is three lattice, namely current volume lattice number is three lattice, the default gain that current volume lattice number is corresponding is 8dB, song A is artificial when recording adds several dB (during broadcasting, volume is bigger than normal), the amplitude threshold corresponding with current volume lattice number is set to 500mV, above-mentioned predetermined time period is set to 5 seconds, and the minimum resolution regulating gain is 1dB.Before song A is played out, first playback terminal calculates the mean value of the amplitude of the song A collected in 5 seconds, result is 600mV, now the mean value 600mV of the amplitude of song A is greater than the above-mentioned amplitude threshold 500mV corresponding with current volume lattice number, then according to table 1, gain corresponding for current volume lattice number is reduced to 6dB by default gain 8dB by playback terminal, and after regulating, song A plays back by playback terminal again, and sound now get used to regard to the sense of hearing meeting user.It can be that step pitch reduces to realize successively with 1dB that gain corresponding for current volume lattice number is reduced to 6dB by 8dB, and also can directly reduce 2dB to realize, the specific implementation embodiment of the present invention be not construed as limiting.Step S207 in second embodiment of a kind of volume adjusting method that the specific implementation of above-mentioned reduction unit 301 can provide see the embodiment of the present invention, does not repeat them here.
Increase unit 302, at the comparative result of described second comparing unit 202 be described mean value be less than described amplitude threshold time, increase the gain of described current volume lattice number.
In specific implementation, when playback terminal judges that above-mentioned mean value is less than above-mentioned amplitude threshold, show that the acoustic amplitudes of present multimedia file sound intermediate frequency signal itself is less than normal, when causing directly playing, sound is on the low side, user can be made to listen not clear, now, playback terminal automatically can increase gain corresponding to current volume lattice number until gain corresponding to above-mentioned current volume lattice number equals gain corresponding to above-mentioned amplitude threshold, with the custom making actual play sound size out meet user.
Illustrate for song B, the volume lattice number of playback terminal has five lattice, max volume is five lattice, minimal volume is zero lattice, arranging volume lattice number after startup is three lattice, namely current volume lattice number is three lattice, the default gain that current volume lattice number is corresponding is 8dB, song B is artificial when recording reduces several dB (during broadcasting, volume is less than normal), the amplitude threshold corresponding with current volume lattice number is set to 500mV, above-mentioned predetermined time period is set to 5 seconds, and the minimum resolution regulating gain is 1dB.Before song B is played out, first playback terminal calculates the mean value of the amplitude of the song B collected in 5 seconds, result is 400mV, now the mean value 400mV of the amplitude of song B is less than the above-mentioned amplitude threshold 500mV corresponding with current volume lattice number, then according to table 1, gain corresponding for current volume lattice number is increased to 10dB by default gain 8dB by playback terminal, and after regulating, song B plays back by playback terminal again, and sound now get used to regard to the sense of hearing meeting user.It can be that step pitch increases successively and realizes with 1dB that gain corresponding for current volume lattice number is increased to 10dB by 8dB, and also can directly increase 2dB to realize, the specific implementation embodiment of the present invention be not construed as limiting.Step S208 in second embodiment of a kind of volume adjusting method that the specific implementation of above-mentioned increase unit 302 can provide see the embodiment of the present invention, does not repeat them here.
In the embodiment of the present invention, the second collecting unit 101 gathers the electrical parameter of current audio signals with the first sampling rate and is calculated the amplitude of this current audio signals by the 3rd computing unit 102 according to this electrical parameter; Then, record cell 2011 records the amplitude of the total degree gathered in predetermined time period and this current audio signals at every turn collected, according to amplitude and this total degree of this current audio signals collected at every turn, the second computing unit 2012 calculates the mean value of the amplitude of this current audio signals collected in this predetermined time period; This mean value compares with the amplitude threshold corresponding with current volume lattice number preset by the second comparing unit 202, if this mean value is greater than this amplitude threshold, then reduce the gain that unit 301 reduces current volume lattice number, if this mean value is less than this amplitude threshold, then increase the gain that unit 302 increases current volume lattice number.The embodiment of the present invention mean value in a period of time and the amplitude threshold preset compare, and make comparative result more accurately rationally; Reduce according to comparative result playback terminal or increase the gain of this current volume lattice number, thus volume gain corresponding to volume adjusting can be set according to the parameter of audio file, promoting Consumer's Experience.
Referring to Fig. 7, is the 4th example structure schematic diagram of a kind of terminal that the embodiment of the present invention provides.As shown in Figure 7, this terminal can comprise: at least one input equipment 1000; At least one output equipment 2000; At least one processor 3000, such as CPU; With memory 4000, above-mentioned input equipment 1000, output equipment 2000, processor 3000 are connected by bus 5000 with memory 4000.
Wherein, above-mentioned input equipment 1000 specifically can be the signal input/acquisition channel of terminal, for the parameters of Gather and input signal.
Above-mentioned output equipment 2000 specifically can be the sound play device of terminal, comprises loud speaker or loudspeaker, for the audio signal in play multimedia file.
Above-mentioned memory 4000 can be high-speed RAM memory, also can be non-labile memory (non-volatile memory), such as magnetic disc store.Above-mentioned memory 4000 is for storing batch processing code, and above-mentioned input equipment 1000, output equipment 2000 and processor 3000, for calling the program code stored in memory 4000, perform and operate as follows:
Above-mentioned output equipment 2000, after regulating the gain of current volume lattice number at processor 3000, plays back audio signal.
Above-mentioned input equipment 1000, for gathering the characteristic parameter of current audio signals.
Above-mentioned processor 3000, compares for the characteristic parameter collected by input equipment 1000 with the parameter threshold corresponding with current volume lattice number preset and according to comparative result, regulates the gain of described current volume lattice number.
In the execution mode that some are feasible, above-mentioned input equipment 1000 also specifically for:
Gather the electrical parameter of current audio signals with the first sampling rate, and calculate the amplitude of described current audio signals according to described electrical parameter.
In the execution mode that some are feasible, above-mentioned processor 3000 also specifically for:
Calculate the mean value of the characteristic parameter of the described current audio signals collected by input equipment 1000 in predetermined time period, described mean value is compared with the parameter threshold corresponding with current volume lattice number preset.According to comparative result, regulate the gain of described current volume lattice number.
In the implementation that some are feasible, above-mentioned processor 3000 also specifically for:
Judge whether described characteristic parameter comprises the amplitude of described current audio signals or the frequency of described current audio signals, if, then according to the comparative result compared with the parameter threshold corresponding with current volume lattice number preset by described mean value, regulate the gain of described current volume lattice number.
In the implementation that some are feasible, above-mentioned processor 3000 also specifically for:
The parameter threshold corresponding with every lattice volume is set, and the parameter threshold corresponding with every lattice volume is kept in memory 4000.
In specific implementation, input equipment 1000 described in the embodiment of the present invention, output equipment 2000 and processor 3000 can perform the first embodiment of a kind of volume adjusting method that the embodiment of the present invention provides, the second embodiment and the implementation described in the 3rd embodiment, also can perform the implementation of the first embodiment of a kind of terminal that the embodiment of the present invention provides, the second embodiment and the terminal described in the 3rd embodiment, not repeat them here.
Module in all embodiments of the present invention or submodule, universal integrated circuit can be passed through, such as CPU (Central Processing Unit, central processing unit), or realized by ASIC (Application SpecificIntegrated Circuit, application-specific integrated circuit (ASIC)).
Step in embodiment of the present invention method can be carried out order according to actual needs and be adjusted, merges and delete.
Unit in embodiment of the present invention device can carry out merging, divide and deleting according to actual needs.
One of ordinary skill in the art will appreciate that all or part of flow process realized in above-described embodiment method, that the hardware that can carry out instruction relevant by computer program has come, described program can be stored in a computer read/write memory medium, this program, when performing, can comprise the flow process of the embodiment as above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random access memory (Random Access Memory is called for short RAM) etc.
Above a kind of volume adjusting method that the embodiment of the present invention provides is described in detail, apply specific case herein to set forth principle of the present invention and execution mode, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. a volume adjusting method, is characterized in that, comprising:
Gather the characteristic parameter of current audio signals;
Described characteristic parameter is compared with the parameter threshold corresponding with current volume lattice number preset;
According to comparative result, regulate the gain of described current volume lattice number.
2. method according to claim 1, is characterized in that, before the characteristic parameter of described collection current audio signals, also comprises:
Arrange the parameter threshold that every lattice volume is corresponding, described parameter threshold comprises at least one in amplitude threshold and frequency threshold;
Store the parameter threshold that described every lattice volume is corresponding.
3. method according to claim 2, is characterized in that, described by described characteristic parameter with preset the parameter threshold corresponding with current volume lattice number compare, comprising:
Calculate the mean value of the characteristic parameter of the described current audio signals collected in predetermined time period;
Described mean value is compared with the parameter threshold corresponding with current volume lattice number preset.
4. method according to claim 3, is characterized in that,
Described characteristic parameter comprises at least one in the amplitude of described current audio signals and the frequency of described current audio signals.
5. method according to claim 4, is characterized in that, if described characteristic parameter comprises the amplitude of described current audio signals, then described according to comparative result, regulates the gain of described current volume lattice number, comprising:
When described mean value is greater than described amplitude threshold, then reduce the gain of described current volume lattice number;
When described mean value is less than described amplitude threshold, then increase the gain of described current volume lattice number.
6. method according to claim 4, is characterized in that, if described characteristic parameter comprises the frequency of described current audio signals, then described according to comparative result, regulates the gain of described current volume lattice number, comprising:
If described mean value is greater than described frequency threshold, then reduce the gain of described current volume lattice number;
If described mean value is less than described frequency threshold, then increase the gain of described current volume lattice number.
7. method according to claim 3, is characterized in that, the mean value of the characteristic parameter of the described current audio signals collected in described calculating predetermined time period, comprising:
The characteristic parameter X1 of the interior total degree n gathered of record predetermined time period and the described current audio signals at every turn collected, X2, X3 ..., Xn;
The mean value of the characteristic parameter of the described current audio signals collected is calculated in described predetermined time period according to the characteristic parameter of the described described current audio signals collected and described total degree at every turn
.
8. method according to claim 5, is characterized in that, if described characteristic parameter comprises the amplitude of described current audio signals, then the characteristic parameter of described collection current audio signals, comprising:
The electrical parameter of current audio signals is gathered with the first sampling rate;
The amplitude of described current audio signals is calculated according to described electrical parameter.
9. method according to claim 8, is characterized in that,
Described electrical parameter comprises at least one in current value, magnitude of voltage and performance number.
10. the method according to any one of claim 1 ~ 9, is characterized in that,
The source of described audio signal comprises: at least one in song files, video file, network flow-medium, FM broadcast, voice call and video conference.
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| CN108540904A (en) * | 2018-04-24 | 2018-09-14 | 深圳市战音科技有限公司 | A kind of method and apparatus improving speaker audio |
| CN109217834A (en) * | 2018-10-19 | 2019-01-15 | 歌尔科技有限公司 | Gain adjusting method, audio frequency apparatus and readable storage medium storing program for executing |
| CN109729382A (en) * | 2018-12-19 | 2019-05-07 | 北京达佳互联信息技术有限公司 | Volume processing method, device and server, the electronic equipment of audio, video data |
| CN110457002A (en) * | 2019-07-03 | 2019-11-15 | 平安科技（深圳）有限公司 | A kind of multimedia file processing method, device and computer storage medium |
| CN110457002B (en) * | 2019-07-03 | 2023-07-25 | 平安科技（深圳）有限公司 | Multimedia file processing method, device and computer storage medium |
| WO2023071425A1 (en) * | 2021-10-25 | 2023-05-04 | Oppo广东移动通信有限公司 | Volume control method and apparatus, and electronic device and storage medium |
| CN114520949A (en) * | 2022-02-10 | 2022-05-20 | 维沃移动通信有限公司 | Volume control method, device, equipment and medium |
| CN114520949B (en) * | 2022-02-10 | 2024-05-03 | 维沃移动通信有限公司 | Volume control method, device, equipment and medium |
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