CN103700386A - Information processing method and electronic equipment - Google Patents
Information processing method and electronic equipment Download PDFInfo
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- CN103700386A CN103700386A CN201310688187.4A CN201310688187A CN103700386A CN 103700386 A CN103700386 A CN 103700386A CN 201310688187 A CN201310688187 A CN 201310688187A CN 103700386 A CN103700386 A CN 103700386A
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Abstract
The invention provides an information processing method which is used for solving the technical problem that the effect of outputting audio by electronic equipment is poor in the prior art. The method comprises the following steps of determining at least one characteristic parameter of audio information to be output; determining a vulnerable audio segment in the audio information to be output according to the at least one characteristic parameter; repairing the vulnerable audio segment to obtain a first repaired audio segment corresponding to the vulnerable audio segment; replacing the vulnerable audio segment by the first repaired audio segment to obtain first repaired audio information corresponding to the audio information to be output.
Description
Technical field
The present invention relates to electronic technology field, particularly a kind of information processing method and electronic equipment.
Background technology
Development along with electronic technology, increasing electronic equipment has entered people's life, for people's live and work has brought facility, for example, smart mobile phone, panel computer, notebook computer etc., for improving the recreational of these electronic equipments, people in use, require also more and more higher to the audio quality of electronic equipment.
At present, because most loudspeaker in electronic equipment is because being subject to the size restrictions of fuselage, loudspeaker presents the limited in one's ability of audio frequency, when it carries out audio frequency while putting outward under larger volume, easily cause the transient distortion of sound, some melodies there will be the problems such as noise, distorsion, bass composition are damaged when playing, and the audition that has had a strong impact on user is experienced.
In prior art, in order to address this problem, a kind of method is by dynamic range control (Dynamic range control, DRC) audio frequency being carried out to a simple gain promotes, the method, mainly for time domain, can solve the existing clipping distortion problem of many audio-frequency informations, but the method is not processed audio frequency at frequency domain, loudspeaker can not guarantee the flatness of audio frequency in frequency domain, therefore still can exist obvious distorsion when utilizing large volume to play some melodies.
Another method, is by the volume booster in the audio device of Doby audio frequency, sound signal to be strengthened, and is mainly the adjustment that audio frequency is gained and amplified by having the audio section of higher amplitude and energy, reaches undistorted max volume.But the method is not considered the gain of the audio frequency of short arc and energy and is promoted, while there is certain difference between a plurality of amplitudes that exist or between a plurality of energy value in audio frequency, by volume booster, strengthen after processing, the difference in the audio frequency obtaining will be larger.For example, the instantaneous mutation audio frequency for some similar pianos, can produce obvious distorsion and noise.
In summary, electronic equipment is carrying out audio frequency while putting outward, is guaranteeing, under the prerequisite of certain volume, to be difficult to guarantee the result of broadcast of tonequality, therefore there is the poor technical matters of audio frequency output effect of electronic equipment.
Summary of the invention
The embodiment of the present invention provides an information processing method and electronic equipment, for solving the poor technical matters of audio frequency output effect of prior art electronic equipment.
An information processing method, is applied to, in an electronic equipment, said method comprising the steps of:
Determine at least one characteristic parameter of audio-frequency information to be exported;
Described in determining according to described at least one characteristic parameter, treat the rapid wear audio section in output audio information;
Described rapid wear audio section is carried out to repair process, obtain the first repair touch tone section corresponding with described rapid wear audio section;
By described the first repair touch tone section, replace described rapid wear audio section, obtain with described in the first repair touch tone information corresponding to audio-frequency information to be exported.
Wherein, described characteristic parameter is specially: transient state indicates parameter, frequency domain energy parameter or peak-to-average force ratio parameter.
Preferably, at least one characteristic parameter rapid wear audio section in audio-frequency information to be exported described in determining described in described basis, is specially:
Audio-frequency information described to be exported is divided into a plurality of audio sections, determines respectively the value of at least one characteristic parameter described in each audio section; When described at least one characteristic parameter is described transient state sign parameter, different from default transient state sign parameter value if the described transient state of a definite audio section indicates the parameter value of parameter, determine that described audio section is described rapid wear audio section; Or, when described at least one characteristic parameter is described frequency domain energy parameter, if determine when the parameter value of described frequency domain energy parameter is greater than default frequency domain energy threshold, determine that described audio section is described rapid wear audio section; Or when described at least one characteristic parameter is described peak-to-average force ratio parameter, if determine, the parameter value of described peak-to-average force ratio parameter is positioned at outside default peak-to-average force ratio range of parameter values, determines that described audio section is described rapid wear audio section.
Preferably, described rapid wear audio section is carried out to repair process, obtain the first repair touch tone section corresponding with described rapid wear audio section, be specially: the parameter value of determining the frequency domain energy parameter of described rapid wear audio section is the first frequency domain energy parameter value; According to the ratio of described the first frequency domain energy parameter value and default frequency domain energy threshold, determine blanket factor; According to described blanket factor, the frequency domain energy of described rapid wear audio section is carried out to compression process, the parameter value of the frequency domain energy parameter of described rapid wear audio section is adjusted into the second frequency domain energy parameter value, obtain the second repair touch tone section; Wherein, described the second frequency domain energy parameter value is not more than described default frequency domain energy threshold; Described the second repair touch tone section is carried out to smoothing processing, obtain described the first repair touch tone section.
Preferably, obtain with described in after the first repair touch tone information corresponding to audio-frequency information to be exported, also comprise: described the first repair touch tone information is transformed into time domain by frequency domain, acquisition the second repair touch tone information.
Preferably, after the second repair touch tone information of acquisition, also comprise: whether the actual amplitude value that judges described the second repair touch tone information is greater than default amplitude; When described actual amplitude value is greater than described default amplitude, described actual amplitude value is adjusted into the second value by the first value, obtain and adjust audio-frequency information; Wherein, described the second value is not more than described default amplitude.
Preferably, after obtaining described adjustment audio-frequency information, also comprise: described adjustment audio-frequency information is carried out to smoothing processing, obtain output audio information.
Preferably, before determining described at least one characteristic parameter of described audio-frequency information, also comprise: audio-frequency information described to be exported is carried out to dynamic range control DRC processing.
An electronic equipment, comprising:
The first determination module, for determining at least one characteristic parameter of audio-frequency information to be exported;
The second determination module, for treating the rapid wear audio section of output audio information described in determining according to described at least one characteristic parameter;
Repair module, for described rapid wear audio section is carried out to repair process, obtain the first repair touch tone section corresponding with described rapid wear audio section;
Replacement module, for described the first repair touch tone section is replaced to described rapid wear audio section, obtain with described in the first repair touch tone information corresponding to audio-frequency information to be exported.
Wherein, described characteristic parameter is specially: transient state indicates parameter, frequency domain energy parameter or peak-to-average force ratio parameter.
Preferably, described the second determination module specifically for: audio-frequency information described to be exported is divided into a plurality of audio sections, determines respectively the value of at least one characteristic parameter described in each audio section; When described at least one characteristic parameter is described transient state sign parameter, different from default transient state sign parameter value if the described transient state of a definite audio section indicates the parameter value of parameter, determine that described audio section is described rapid wear audio section; Or, when described at least one characteristic parameter is described frequency domain energy parameter, if determine when the parameter value of described frequency domain energy parameter is greater than default frequency domain energy threshold, determine that described audio section is described rapid wear audio section; Or when described at least one characteristic parameter is described peak-to-average force ratio parameter, if determine, the parameter value of described peak-to-average force ratio parameter is positioned at outside default peak-to-average force ratio range of parameter values, determines that described audio section is described rapid wear audio section.
Preferably, described reparation module specifically for: the parameter value of determining the frequency domain energy parameter of described rapid wear audio section is the first frequency domain energy parameter value; According to the ratio of described the first frequency domain energy parameter value and default frequency domain energy threshold, determine blanket factor; According to described blanket factor, the frequency domain energy of described rapid wear audio section is carried out to compression process, the parameter value of the frequency domain energy parameter of described rapid wear audio section is adjusted into the second frequency domain energy parameter value, obtain the second repair touch tone section; Wherein, described the second frequency domain energy parameter value is not more than described default frequency domain energy threshold; Described the second repair touch tone section is carried out to smoothing processing, obtain described the first repair touch tone section.
Preferably, described electronic equipment also comprises modular converter, for described the first repair touch tone information is transformed into time domain by frequency domain, obtains the second repair touch tone information.
Preferably, described electronic equipment also comprises judge module and adjusting module;
Described judge module, for judging whether the actual amplitude value of described the second repair touch tone information is greater than default amplitude;
Described adjusting module, for when described actual amplitude value is greater than described default amplitude, is adjusted into the second value by described actual amplitude value by the first value, obtains and adjusts audio-frequency information; Wherein, described the second value is not more than described default amplitude.
Preferably, described electronic equipment also comprises the first processing module, for described adjustment audio-frequency information is carried out to smoothing processing, obtains output audio information.
Preferably, described electronic equipment also comprises the second processing module, for the audio-frequency information to described to be exported, carries out dynamic range control DRC processing.
In the embodiment of the present invention, by at least one characteristic parameter of audio-frequency information described to be exported, described rapid wear audio section described in can determining in audio-frequency information to be exported, thereby carry out repair process for described rapid wear audio section, obtain described the first repair touch tone section, described rapid wear audio section described in replacing by described the first repair touch tone section again in audio-frequency information to be exported, to reach the object of audio-frequency information to be exported described in reparation.For example, described in playing under larger volume wait export audio-frequency information time, by searching and repair described rapid wear audio section wherein, just can obtain the described first repair touch tone information corresponding with audio-frequency information described to be exported, be equivalent to guarantee the normal output of audio-frequency information, eliminate the drawback that causes the transient distortion of output audio because improving volume, improved the audio frequency output effect of described electronic equipment.
Accompanying drawing explanation
Fig. 1 is the main process flow diagram of information processing method in the embodiment of the present invention;
Fig. 2 is the primary structure schematic diagram of electronic equipment in the embodiment of the present invention;
Fig. 3 is the detailed structure schematic diagram of electronic equipment in the embodiment of the present invention.
Embodiment
A kind of information processing method is provided in the embodiment of the present invention, and described method is for electronic equipment, and described method comprises: at least one characteristic parameter of determining audio-frequency information to be exported; Described in determining according to described at least one characteristic parameter, treat the rapid wear audio section in output audio information; Described rapid wear audio section is carried out to repair process, obtain the first repair touch tone section corresponding with described rapid wear audio section; By described the first repair touch tone section, replace described rapid wear audio section, obtain with described in treat the first repair touch tone information that output audio information is corresponding.
In the embodiment of the present invention, by at least one characteristic parameter of audio-frequency information described to be exported, described rapid wear audio section described in can determining in audio-frequency information to be exported, thereby carry out repair process for described rapid wear audio section, obtain described the first repair touch tone section, described rapid wear audio section described in replacing by described the first repair touch tone section again in audio-frequency information to be exported, to reach the object of audio-frequency information to be exported described in reparation.For example, described in playing under larger volume wait export audio-frequency information time, by searching and repair described rapid wear audio section wherein, just can obtain the described first repair touch tone information corresponding with audio-frequency information described to be exported, be equivalent to guarantee the normal output of audio-frequency information, eliminate the drawback that causes the transient distortion of output audio because improving volume, improved the audio frequency output effect of described electronic equipment.
For making object, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
In the embodiment of the present invention, described electronic equipment can be PC(personal computer), notebook, PAD(panel computer), the different electronic equipment of mobile phone etc., the present invention is not restricted this.
First explanation, the term "and/or" occurring herein, is only a kind of incidence relation of describing affiliated partner, and can there are three kinds of relations in expression, and for example, A and/or B, can represent: individualism A exists A and B, these three kinds of situations of individualism B simultaneously.In addition, character "/", generally represents that forward-backward correlation is to liking a kind of relation of "or" herein.Below in conjunction with accompanying drawing, the preferred embodiment of the present invention is elaborated.
Embodiment mono-
Refer to Fig. 1, the embodiment of the present invention provides a kind of information processing method, and described method is applied in electronic equipment, and the main flow process of described method is as follows:
Step 101: at least one characteristic parameter of determining audio-frequency information to be exported.
In the embodiment of the present invention, audio-frequency information described to be exported can be by the audio output unit of described electronic equipment, to be about to the audio-frequency information of output, described audio output unit can be for example Microspeaker, sound equipment, earphone or other loudspeakers etc., described in audio-frequency information to be exported can be for example fragment of sound, video clips or person's melody etc.
Conventionally, different audio output units has different frequency response curves when presenting audio-frequency information, and described frequency response curve refers to that gain is with the curve of frequency change.Desirable frequency response curve should be straight, after voice signal passes through, does not produce distortion, and amplifier is just fewer for the impact of signal like this, and amplifier is under different output powers, its frequency response is different, and output power is larger conventionally, and its frequency response index is just poorer.For example, 1 ten times of amplifier, is 10 times to the enlargement factor of the signal of 1KHz, and may enlargement factor just become 9.99 times for the AC signal of 10KHz, so we just can say that this amplifier has produced frequency distortion.
In the embodiment of the present invention, before determining described at least one characteristic parameter, can also comprise: audio-frequency information described to be exported is carried out to DRC processing.By DRC, process the gain of audio-frequency information to be exported described in can improving, thus the volume of audio-frequency information to be exported described in promoting.
In the embodiment of the present invention, described at least one characteristic parameter can be the parameter that can be used in the feature that characterizes described audio-frequency information.
In the embodiment of the present invention, for example, described characteristic parameter can be that transient state indicates parameter, frequency domain energy parameter or peak-to-average force ratio parameter, or other parameters of described characteristic parameter audio-frequency information to be exported described in can being also.
In the embodiment of the present invention, if being transient state, described characteristic parameter indicates parameter, can in described electronic equipment, audio-frequency information described to be exported be passed through to a Hi-pass filter, obtain with described in filtering audio-frequency information corresponding to audio-frequency information to be exported, described filtering audio-frequency information is sampled, and calculate the subframe energy of each sampled audio section, the described transient state that can determine each sampled audio frame according to the subframe energy of each sampled audio frame indicates parameter, and described in determining, the described transient state of audio-frequency information to be exported indicates parameter.
For example, audio-frequency information described to be exported represents with s (n), the described filtering audio-frequency information of exporting after Hi-pass filter wait the audio-frequency information of exporting is represented with x (n), gather at least one section audio section in described filtering audio-frequency information, from described filtering audio-frequency information, determine at least one sampled audio section, calculate the subframe energy of each sampled audio section, described subframe energy is with E (m) expression, and the computing formula of described subframe energy is as follows:
In formula 1, X
hPF(n) for filter the High frequency filter audio-frequency information of low-frequency component through Hi-pass filter, n is the sampled audio frame of High frequency filter audio-frequency information middle pitch frequency range, m is m audio frame in the audio section of sampling, m is positive integer, and m=1,2 ... b, L is the frame length of the audio frame in the audio section gathering, b represents the frame number of the audio frame comprising in audio section.
According to described subframe energy, calculate energy when long again, described when long energy can use E
lT(m) represent, its computing formula is as follows:
E
LT(m)＝(1-a)E
LT(m-1)+aE(m) （2）
In formula 2, m, b are positive integer, and m=1, and 2 ... b, 0<a<1.
Obtain the value of described subframe energy and described when long after the value of energy, the value of more described subframe energy and the described value of energy when long, if E (m)>=ρ * E
lT(m), the parameter value of described transient state sign parameter is 1, otherwise described transient state indicates the parameter value of parameter, is 0.Wherein, ρ is less than 1 positive number.
Wherein, by described Hi-pass filter, obtain with described in described filtering audio-frequency information corresponding to audio-frequency information to be exported, and determined that according to the subframe energy of described filtering audio-frequency information the transient state of corresponding sampled audio frame indicates after parameter, can also go the transient state of level and smooth next frame to indicate parameter by hangover algorithm, described hangover algorithm can be for the parameter value of subframe energy adjacent in level and smooth described filtering information, thereby the transient state that makes the audio frame in described filtering information indicates parameter and is consistent, for example, if it is 1 that the transient state of current audio frame indicates the parameter value of parameter, the parameter value of the transient state of next audio frame sign parameter is similarly 1 so.
In the embodiment of the present invention, if described characteristic parameter is described frequency domain energy parameter, audio-frequency information described to be exported can be transformed in frequency domain, with the parameter value of the described frequency domain energy parameter of audio-frequency information to be exported described in determining.
For example, audio-frequency information described to be exported is s (n), be transformed into frequency domain, can obtain the value of frequency point of the frequency domain audio-frequency information corresponding with audio-frequency information described to be exported, with y (k), represent, described in just can calculating according to described frequency domain audio-frequency information, the frequency domain energy parameter of audio-frequency information to be exported, represents with E (k).The computing formula of the parameter value of the frequency domain energy parameter of audio-frequency information described to be exported can be as follows:
In formula 3, y (k) is the value of frequency point of frequency domain audio-frequency information, and k is the frequency gathering in frequency domain audio-frequency information, and p is the positive integer that is less than L/2, and L is the frame length of the audio frame in the audio section gathering.
In the embodiment of the present invention, if described characteristic parameter is described peak-to-average force ratio parameter, can be according to audio-frequency information described to be exported the peak value of the amplitude in frequency domain and the parameter value that average is determined described peak-to-average force ratio parameter.
For example, described in obtaining wait the audio-frequency information of exporting after the parameter value of peak parameters and the parameter value of Mean Parameters at an audio section of the collection in frequency domain, the parameter value of the peak-to-average force ratio parameter of audio-frequency information to be exported described in can obtaining, for example described peak-to-average force ratio parameter can be expressed as R
pa,
In formula 4, y (k) is illustrated in range value corresponding to audio section in frequency domain, and max (y (k)) represents the maximal value of the amplitude in audio section, and mean (y (k)) represents the mean value of amplitude in audio section,
Step 102: treat the rapid wear audio section in output audio information described in determining according to described at least one characteristic parameter.
In the embodiment of the present invention, the audio section of audio-frequency information generation transient distortion to be exported described in described rapid wear audio section easily causes in audio-frequency information to be exported described in can being, if it is not processed, when the described rapid wear audio section of output, the phenomenons such as general easy generation distorsion, have a strong impact on output effect.
In the embodiment of the present invention, after having determined described at least one characteristic parameter, can determine described rapid wear audio section according to described at least one characteristic parameter.
In the embodiment of the present invention, rapid wear audio section described in determining according to described at least one characteristic parameter in audio-frequency information to be exported, be specifically as follows: audio-frequency information described to be exported is divided into a plurality of audio sections, determines respectively the value of at least one characteristic parameter described in each audio section; When described at least one characteristic parameter is described transient state sign parameter, different from default transient state sign parameter value if the described transient state of a definite audio section indicates the parameter value of parameter, can determine that described audio section is described rapid wear audio section; Or, when described at least one characteristic parameter is described frequency domain energy parameter, if determine when the parameter value of described frequency domain energy parameter is greater than default frequency domain energy threshold, can determine that described audio section is described rapid wear audio section; Or when described at least one characteristic parameter is described peak-to-average force ratio parameter, if determine, the parameter value of described peak-to-average force ratio parameter is positioned at outside default peak-to-average force ratio range of parameter values, can determine that described audio section is described rapid wear audio section.
Preferably, in the embodiment of the present invention, can be pre-conditioned audio-frequency information described to be exported to be divided into a plurality of audio sections according to one.For example described pre-conditioned can be to arrange according to the characteristic of the audio output unit of described electronic equipment.
In the embodiment of the present invention, when described at least one characteristic parameter is described transient state sign parameter, if it is different from default transient state sign parameter value that the described transient state of a definite audio section indicates the parameter value of parameter, can determine that described audio section is described rapid wear audio section.
In the embodiment of the present invention, it can be to pre-set according to the Frequency Response of described audio output unit that described default transient state indicates parameter value, and for example, described electronic equipment is provided with described default transient state and indicates parameter value dispatching from the factory.
Preferably, in the embodiment of the present invention, when the transient state wait each audio section in the audio-frequency information of exporting described in having obtained indicates after the parameter value of parameter, the transient state of each audio section can be indicated to parameter compares with described default transient state sign parameter value respectively, when defining the transient state of audio section, indicate the parameter value of parameter when different with described default transient state sign parameter value, can determine that this audio section is described rapid wear audio section.
For example, it is 1 that described default transient state indicates parameter value, described in the transient state of an audio section in audio-frequency information the to be exported parameter value that indicates parameter be 0, can determine that this audio section is described rapid wear audio section.
In the embodiment of the present invention, when described at least one characteristic parameter is described frequency domain energy parameter, if determine, the parameter value of the described frequency domain energy parameter of an audio section is greater than default frequency domain energy threshold, can determine that described audio section is described rapid wear audio section.
Wherein, described default frequency domain energy threshold parameter can be to arrange according to the audio output unit in described electronic equipment, when the frequency domain energy of the described audio-frequency information wait exporting is no more than described default energy threshold, described audio output unit can be exported preferably.
For example, the described audio-frequency information wait exporting is transformed into after time domain, obtain the wherein described frequency domain energy parameter of an audio section, after determining the parameter value of described frequency domain energy parameter, the parameter value of described frequency domain energy parameter and described default frequency domain energy threshold can be compared, if the parameter value of described frequency domain energy parameter is greater than described default frequency domain energy threshold, can determine that described audio section is described rapid wear audio section.
In the embodiment of the present invention, when described at least one characteristic parameter is described peak-to-average force ratio parameter, if determine, the parameter value of described peak-to-average force ratio parameter is positioned at outside default peak-to-average force ratio range of parameter values, can determine that the audio section that the parameter value of described peak-to-average force ratio parameter is positioned at outside described default peak-to-average force ratio range of parameter values is described rapid wear audio section.
Preferably, in the embodiment of the present invention, after described at least one characteristic parameter of audio-frequency information to be exported described in obtaining, the process of determining described rapid wear audio section according to described characteristic parameter specifically can complete by pattern-recognition, that is, the process of step 102 can complete by pattern-recognition.
Step 103: described rapid wear audio section is carried out to repair process, obtain the first repair touch tone section corresponding with described rapid wear audio section.
Preferably, in the embodiment of the present invention, described rapid wear audio section is carried out to repair process, obtain the first repair touch tone section corresponding with described rapid wear audio section, can be specifically: the parameter value of determining the frequency domain energy parameter of described rapid wear audio section is the first frequency domain energy parameter value; According to the ratio of described the first frequency domain energy parameter value and default frequency domain energy threshold, determine blanket factor; According to described blanket factor, the frequency domain energy of described rapid wear audio section is carried out to compression process, the parameter value of the frequency domain energy parameter of described rapid wear audio section is adjusted into the second frequency domain energy parameter value, obtain the second repair touch tone section; Wherein, described the second frequency domain energy parameter value is not more than described default frequency domain energy threshold; Described the second repair touch tone section is carried out to smoothing processing, obtain described the first repair touch tone section.
For example, according to described at least one characteristic parameter, determining after described rapid wear audio section, can obtain the frequency domain audio-frequency information of described rapid wear audio section correspondence in frequency domain, according to described frequency domain audio-frequency information, can determine the frequency domain energy parameter of described rapid wear audio section, can calculate the parameter value of the described frequency domain energy parameter that described rapid wear audio section is corresponding, for example can be called the first frequency domain energy parameter value, after obtaining described the first frequency domain energy parameter value, determine the ratio of itself and described default frequency domain energy threshold, for example described the first frequency domain energy parameter value is 4000hz, described default frequency domain energy threshold is 3600hz, by the ratio of described default frequency domain energy threshold and described the first frequency domain energy parameter value, can determine described blanket factor, the described blanket factor of for example determining is 0.9, so that the parameter value of the described frequency domain energy parameter of described rapid wear audio section is no more than described default frequency domain energy threshold, can reach the treatment effect that the frequency domain energy of described rapid wear audio section is suppressed.After determining described blanket factor, can to the parameter value of the described frequency domain energy parameter of described rapid wear audio section, adjust according to described blanket factor, the mode of for example adjusting can be that the first frequency domain energy parameter value and described blanket factor in described rapid wear audio section are multiplied each other, to reduce the parameter value of the described frequency domain energy parameter that described rapid wear audio section is corresponding, can determine the parameter value of the described frequency domain energy parameter that after adjusting, described rapid wear audio section is corresponding, for example be called described the second frequency domain energy parameter value, thereby obtain described the second repair touch tone section.For example, the described second frequency domain energy parameter value of acquisition can be 3600hz, is not more than described default frequency domain energy threshold.
Preferably, in the embodiment of the present invention, after obtaining described acquisition the second repair touch tone section, can carry out smoothing processing for described the second repair touch tone section, for example can carry out smoothing processing to described the second repair touch tone section, so that described the second repair touch tone section and described in the parameter value of frequency domain energy parameter between adjacent audio section in audio-frequency information to be exported can be because larger difference appears in described compression process, thereby avoided described rapid wear audio section to occur distortion as far as possible.
Step 104: by described the first repair touch tone section, replace described rapid wear audio section, obtain with described in the first repair touch tone information corresponding to audio-frequency information to be exported.
In the embodiment of the present invention, after obtaining described the first repair touch tone section, can replace described rapid wear audio section by described the first repair touch tone section, can obtain with described in described the first repair touch tone information corresponding to audio-frequency information to be exported.
In the embodiment of the present invention, the described rapid wear audio section in audio-frequency information described to be exported is repaired, avoided the phenomenons such as distorsion that may occur, improved audio frequency output quality.
Further, in one embodiment of the invention, after obtaining described the first repair touch tone information, can also comprise: described the first repair touch tone information is transformed into time domain by frequency domain, obtains the second repair touch tone information.
Further, in one embodiment of the invention, described the second repair touch tone information is being transformed into after time domain by frequency domain, can obtain the time domain parameter information of described the second repair touch tone information, the parameter informations such as the peak value that for example, described time domain parameter information can be described the second repair touch tone information, peak factor, kurtosis index.
Further, in one embodiment of the invention, after the second repair touch tone information of acquisition, can also comprise: whether the actual amplitude value that judges described the second repair touch tone information is greater than default amplitude; When described actual amplitude value is greater than described default amplitude, described actual amplitude value is adjusted into the second value by the first value, obtain and adjust audio-frequency information; Wherein, described the second value is not more than described default amplitude.
In the embodiment of the present invention, described default amplitude can be according to the frequency response curve of the described audio output unit of described electronic equipment, to arrange in advance, in general, when the amplitude of output audio is not more than described default amplitude, can obtain good output effect.
Further, in one embodiment of the invention, after obtaining described adjustment audio-frequency information, can also comprise: described adjustment audio-frequency information is carried out to smoothing processing, obtain output audio information.
Embodiment bis-
Refer to Fig. 2, the embodiment of the present invention provides a kind of electronic equipment, and described electronic equipment can comprise the first determination module 201, the second determination module 202, repair module 203 and replacement module 204.
Described the first determination module 201 can be for determining at least one characteristic parameter of audio-frequency information to be exported.
Described the second determination module 202 can be treated the rapid wear audio section in output audio information described in determining according to described at least one characteristic parameter.
Described reparation module 203 can, for described rapid wear audio section is carried out to repair process, obtain the first repair touch tone section corresponding with described rapid wear audio section.
Described replacement module 204 can be for described the first repair touch tone section is replaced to described rapid wear audio section, obtain with described in the first repair touch tone information corresponding to audio-frequency information to be exported.
Preferably, in the embodiment of the present invention, described characteristic parameter is specifically as follows transient state and indicates parameter, frequency domain energy parameter or peak-to-average force ratio parameter.
Described the second determination module 202 specifically can, for audio-frequency information described to be exported is divided into a plurality of audio sections, be determined respectively the value of at least one characteristic parameter described in each audio section; When described at least one characteristic parameter is described transient state sign parameter, different from default transient state sign parameter value if the described transient state of a definite audio section indicates the parameter value of parameter, can determine that described audio section is described rapid wear audio section; Or, when described at least one characteristic parameter is described frequency domain energy parameter, if determine when the parameter value of described frequency domain energy parameter is greater than default frequency domain energy threshold, can determine that described audio section is described rapid wear audio section; Or when described at least one characteristic parameter is described peak-to-average force ratio parameter, if determine, the parameter value of described peak-to-average force ratio parameter is positioned at outside default peak-to-average force ratio range of parameter values, can determine that described audio section is described rapid wear audio section.
Described reparation module 203 specifically can be for determining that the parameter value of the frequency domain energy parameter of described rapid wear audio section is the first frequency domain energy parameter value; According to the ratio of described the first frequency domain energy parameter value and default frequency domain energy threshold, can determine blanket factor; According to described blanket factor, the frequency domain energy of described rapid wear audio section is carried out to compression process, the parameter value of the frequency domain energy parameter of described rapid wear audio section is adjusted into the second frequency domain energy parameter value, obtain the second repair touch tone section; Wherein, described the second frequency domain energy parameter value is not more than described default frequency domain energy threshold; Described the second repair touch tone section is carried out to smoothing processing, obtain described the first repair touch tone section.
Preferably, in the embodiment of the present invention, refer to Fig. 3, described electronic equipment can also comprise modular converter 301.
Described modular converter 301 can, for described the first repair touch tone information is transformed into time domain by frequency domain, obtain the second repair touch tone information.
Preferably, in the embodiment of the present invention, refer to Fig. 3, described electronic equipment can also comprise judge module 302.
Described judge module 302 can be for judging whether the actual amplitude value of described the second repair touch tone information is greater than default amplitude.
Preferably, in the embodiment of the present invention, refer to Fig. 3, described electronic equipment can also comprise adjusting module 303.
Described adjusting module 303 can be adjusted into the second value by described actual amplitude value by the first value for when described actual amplitude value is greater than described default amplitude, obtains and adjusts audio-frequency information; Wherein, described the second value is not more than described default amplitude.
Preferably, in the embodiment of the present invention, refer to Fig. 3, described electronic equipment can also comprise the first processing module 304.
Described the first processing module can 304 can, for described adjustment audio-frequency information is carried out to smoothing processing, obtain output audio information.
Preferably, in the embodiment of the present invention, please still referring to Fig. 3, described electronic equipment can also comprise the second processing module 305.
Described the second processing module 305 can be carried out dynamic range control DRC processing for the audio-frequency information to described to be exported.
A kind of information processing method is provided in the embodiment of the present invention, and described method is for electronic equipment, and described method comprises: at least one characteristic parameter of determining audio-frequency information to be exported; Described in determining according to described at least one characteristic parameter, treat the rapid wear audio section in output audio information; Described rapid wear audio section is carried out to repair process, obtain the first repair touch tone section corresponding with described rapid wear audio section; By described the first repair touch tone section, replace described rapid wear audio section, obtain with described in treat the first repair touch tone information that output audio information is corresponding.
In the embodiment of the present invention, by at least one characteristic parameter of audio-frequency information described to be exported, described rapid wear audio section described in can determining in audio-frequency information to be exported, thereby carry out repair process for described rapid wear audio section, obtain described the first repair touch tone section, described rapid wear audio section described in replacing by described the first repair touch tone section again in audio-frequency information to be exported, to reach the object of audio-frequency information to be exported described in reparation.For example, described in playing under larger volume wait export audio-frequency information time, by searching and repair described rapid wear audio section wherein, just can obtain the described first repair touch tone information corresponding with audio-frequency information described to be exported, be equivalent to guarantee the normal output of audio-frequency information, eliminate the drawback that causes the transient distortion of output audio because improving volume, improved the audio frequency output effect of described electronic equipment.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware implementation example, implement software example or in conjunction with the form of the embodiment of software and hardware aspect completely.And the present invention can adopt the form that wherein includes the upper computer program of implementing of computer-usable storage medium (including but not limited to magnetic disk memory, CD-ROM, optical memory etc.) of computer usable program code one or more.
The present invention is with reference to describing according to process flow diagram and/or the block scheme of the method for the embodiment of the present invention, equipment (system) and computer program.Should understand can be in computer program instructions realization flow figure and/or block scheme each flow process and/or the flow process in square frame and process flow diagram and/or block scheme and/or the combination of square frame.Can provide these computer program instructions to the processor of multi-purpose computer, special purpose computer, Embedded Processor or other programmable data processing device to produce a machine, the instruction of carrying out by the processor of computing machine or other programmable data processing device is produced for realizing the device in the function of flow process of process flow diagram or a plurality of flow process and/or square frame of block scheme or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, the instruction that makes to be stored in this computer-readable memory produces the manufacture that comprises command device, and this command device is realized the function of appointment in flow process of process flow diagram or a plurality of flow process and/or square frame of block scheme or a plurality of square frame.
These computer program instructions also can be loaded in computing machine or other programmable data processing device, make to carry out sequence of operations step to produce computer implemented processing on computing machine or other programmable devices, thereby the instruction of carrying out is provided for realizing the step of the function of appointment in flow process of process flow diagram or a plurality of flow process and/or square frame of block scheme or a plurality of square frame on computing machine or other programmable devices.
Specifically, computer program instructions corresponding to information processing method in the embodiment of the present application can be stored in CD, hard disk, on the storage mediums such as USB flash disk, when the computer program instructions corresponding with information processing method in storage medium read or be performed by an electronic equipment, comprise the steps:
Determine at least one characteristic parameter of audio-frequency information to be exported;
Described in determining according to described at least one characteristic parameter, treat the rapid wear audio section in output audio information;
Described rapid wear audio section is carried out to repair process, obtain the first repair touch tone section corresponding with described rapid wear audio section;
By described the first repair touch tone section, replace described rapid wear audio section, obtain with described in the first repair touch tone information corresponding to audio-frequency information to be exported.
Wherein, described characteristic parameter is specially: transient state indicates parameter, frequency domain energy parameter or peak-to-average force ratio parameter.
Optionally, in described storage medium, store determine according to described at least one characteristic parameter with step described in rapid wear audio section in audio-frequency information to be exported, corresponding computer instruction, being specifically performed in process, specifically comprises the steps:
Audio-frequency information described to be exported is divided into a plurality of audio sections, determines respectively the value of at least one characteristic parameter described in each audio section;
When described at least one characteristic parameter is described transient state sign parameter, different from default transient state sign parameter value if the described transient state of a definite audio section indicates the parameter value of parameter, determine that described audio section is described rapid wear audio section; Or
When described at least one characteristic parameter is described frequency domain energy parameter, if determine when the parameter value of described frequency domain energy parameter is greater than default frequency domain energy threshold, determine that described audio section is described rapid wear audio section; Or
When described at least one characteristic parameter is described peak-to-average force ratio parameter, if determine, the parameter value of described peak-to-average force ratio parameter is positioned at outside default peak-to-average force ratio range of parameter values, determines that described audio section is described rapid wear audio section.
Optionally, that in described storage medium, stores carries out repair process with step to described rapid wear audio section, obtains the first repair touch tone section corresponding with described rapid wear audio section, and corresponding computer instruction, being specifically performed in process, specifically comprises the steps:
The parameter value of determining the frequency domain energy parameter of described rapid wear audio section is the first frequency domain energy parameter value;
According to the ratio of described the first frequency domain energy parameter value and default frequency domain energy threshold, determine blanket factor;
According to described blanket factor, the frequency domain energy of described rapid wear audio section is carried out to compression process, the parameter value of the frequency domain energy parameter of described rapid wear audio section is adjusted into the second frequency domain energy parameter value, obtain the second repair touch tone section; Wherein, described the second frequency domain energy parameter value is not more than described default frequency domain energy threshold;
Described the second repair touch tone section is carried out to smoothing processing, obtain described the first repair touch tone section.
Optionally, in described storage medium, also store other computer instruction, these computer instructions with step: obtaining with described in computer instruction corresponding to the first repair touch tone information corresponding to audio-frequency information to be exported be performed after being performed, when being performed, comprise the steps:
Described the first repair touch tone information is transformed into time domain by frequency domain, obtains the second repair touch tone information.
Optionally, in described storage medium, also store other computer instruction, these computer instructions with step: obtaining computer instruction corresponding to the second repair touch tone information and be performed after being performed, when being performed, comprising the steps: whether the actual amplitude value that judges described the second repair touch tone information is greater than default amplitude; When described actual amplitude value is greater than described default amplitude, described actual amplitude value is adjusted into the second value by the first value, obtain and adjust audio-frequency information; Wherein, described the second value is not more than described default amplitude.
Optionally, in described storage medium, also store other computer instruction, these computer instructions with step: obtaining computer instruction that described adjustment audio-frequency information is corresponding and be performed after being performed, when being performed, comprise the steps: described adjustment audio-frequency information to carry out smoothing processing, obtain output audio information.
Optionally, in described storage medium, also store other computer instruction, these computer instructions with step: determining that computer instruction that described at least one characteristic parameter of described audio-frequency information is corresponding is performed before being performed, and comprises the steps: audio-frequency information described to be exported to carry out dynamic range control DRC processing when being performed.
Claims (16)
1. an information processing method, is applied in an electronic equipment, and described method comprises:
Determine at least one characteristic parameter of audio-frequency information to be exported;
Described in determining according to described at least one characteristic parameter, treat the rapid wear audio section in output audio information;
Described rapid wear audio section is carried out to repair process, obtain the first repair touch tone section corresponding with described rapid wear audio section;
By described the first repair touch tone section, replace described rapid wear audio section, obtain with described in the first repair touch tone information corresponding to audio-frequency information to be exported.
2. the method for claim 1, is characterized in that, described characteristic parameter is specially: transient state indicates parameter, frequency domain energy parameter or peak-to-average force ratio parameter.
3. method as claimed in claim 2, is characterized in that, at least one characteristic parameter rapid wear audio section in audio-frequency information to be exported described in determining described in described basis, is specially:
Audio-frequency information described to be exported is divided into a plurality of audio sections, determines respectively the value of at least one characteristic parameter described in each audio section;
When described at least one characteristic parameter is described transient state sign parameter, different from default transient state sign parameter value if the described transient state of a definite audio section indicates the parameter value of parameter, determine that described audio section is described rapid wear audio section; Or
When described at least one characteristic parameter is described frequency domain energy parameter, if determine when the parameter value of described frequency domain energy parameter is greater than default frequency domain energy threshold, determine that described audio section is described rapid wear audio section; Or
When described at least one characteristic parameter is described peak-to-average force ratio parameter, if determine, the parameter value of described peak-to-average force ratio parameter is positioned at outside default peak-to-average force ratio range of parameter values, determines that described audio section is described rapid wear audio section.
4. the method for claim 1, is characterized in that, described rapid wear audio section is carried out to repair process, obtains the first repair touch tone section corresponding with described rapid wear audio section, is specially:
The parameter value of determining the frequency domain energy parameter of described rapid wear audio section is the first frequency domain energy parameter value;
According to the ratio of described the first frequency domain energy parameter value and default frequency domain energy threshold, determine blanket factor;
According to described blanket factor, the frequency domain energy of described rapid wear audio section is carried out to compression process, the parameter value of the frequency domain energy parameter of described rapid wear audio section is adjusted into the second frequency domain energy parameter value, obtain the second repair touch tone section; Wherein, described the second frequency domain energy parameter value is not more than described default frequency domain energy threshold;
Described the second repair touch tone section is carried out to smoothing processing, obtain described the first repair touch tone section.
5. the method as described in claim 1 or 4, it is characterized in that, obtain with described in after the first repair touch tone information corresponding to audio-frequency information to be exported, also comprise: described the first repair touch tone information is transformed into time domain by frequency domain, acquisition the second repair touch tone information.
6. method as claimed in claim 5, is characterized in that, after the second repair touch tone information of acquisition, also comprises:
Whether the actual amplitude value that judges described the second repair touch tone information is greater than default amplitude;
When described actual amplitude value is greater than described default amplitude, described actual amplitude value is adjusted into the second value by the first value, obtain and adjust audio-frequency information; Wherein, described the second value is not more than described default amplitude.
7. method as claimed in claim 6, is characterized in that, after obtaining described adjustment audio-frequency information, also comprises: described adjustment audio-frequency information is carried out to smoothing processing, obtain output audio information.
8. the method as described in claim as arbitrary in claim 1-2,4,6-7, is characterized in that, before determining described at least one characteristic parameter of described audio-frequency information, also comprises: audio-frequency information described to be exported is carried out to dynamic range control DRC processing.
9. an electronic equipment, is characterized in that, comprising:
The first determination module, for determining at least one characteristic parameter of audio-frequency information to be exported;
The second determination module, for treating the rapid wear audio section of output audio information described in determining according to described at least one characteristic parameter;
Repair module, for described rapid wear audio section is carried out to repair process, obtain the first repair touch tone section corresponding with described rapid wear audio section;
Replacement module, for described the first repair touch tone section is replaced to described rapid wear audio section, obtain with described in the first repair touch tone information corresponding to audio-frequency information to be exported.
10. electronic equipment as claimed in claim 9, is characterized in that, described characteristic parameter is specially: transient state indicates parameter, frequency domain energy parameter or peak-to-average force ratio parameter.
11. electronic equipments as claimed in claim 10, is characterized in that, described the second determination module specifically for: audio-frequency information described to be exported is divided into a plurality of audio sections, determines respectively the value of at least one characteristic parameter described in each audio section; When described at least one characteristic parameter is described transient state sign parameter, different from default transient state sign parameter value if the described transient state of a definite audio section indicates the parameter value of parameter, determine that described audio section is described rapid wear audio section; Or, when described at least one characteristic parameter is described frequency domain energy parameter, if determine when the parameter value of described frequency domain energy parameter is greater than default frequency domain energy threshold, determine that described audio section is described rapid wear audio section; Or when described at least one characteristic parameter is described peak-to-average force ratio parameter, if determine, the parameter value of described peak-to-average force ratio parameter is positioned at outside default peak-to-average force ratio range of parameter values, determines that described audio section is described rapid wear audio section.
12. electronic equipments as claimed in claim 9, is characterized in that, described reparation module specifically for: the parameter value of determining the frequency domain energy parameter of described rapid wear audio section is the first frequency domain energy parameter value; According to the ratio of described the first frequency domain energy parameter value and default frequency domain energy threshold, determine blanket factor; According to described blanket factor, the frequency domain energy of described rapid wear audio section is carried out to compression process, the parameter value of the frequency domain energy parameter of described rapid wear audio section is adjusted into the second frequency domain energy parameter value, obtain the second repair touch tone section; Wherein, described the second frequency domain energy parameter value is not more than described default frequency domain energy threshold; Described the second repair touch tone section is carried out to smoothing processing, obtain described the first repair touch tone section.
13. electronic equipments as described in claim 9 or 12, is characterized in that, described electronic equipment also comprises modular converter, for described the first repair touch tone information is transformed into time domain by frequency domain, obtain the second repair touch tone information.
14. electronic equipments as claimed in claim 13, is characterized in that, described electronic equipment also comprises judge module and adjusting module;
Described judge module, for judging whether the actual amplitude value of described the second repair touch tone information is greater than default amplitude;
Described adjusting module, for when described actual amplitude value is greater than described default amplitude, is adjusted into the second value by described actual amplitude value by the first value, obtains and adjusts audio-frequency information; Wherein, described the second value is not more than described default amplitude.
15. electronic equipments as claimed in claim 14, is characterized in that, described electronic equipment also comprises the first processing module, for described adjustment audio-frequency information is carried out to smoothing processing, obtain output audio information.
16. electronic equipments as claimed in claim 15, is characterized in that, described electronic equipment also comprises the second processing module, for the audio-frequency information to described to be exported, carries out dynamic range control DRC processing.
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