CN104485121A - Method and system for automatically setting sound effect parameters - Google Patents
Method and system for automatically setting sound effect parameters Download PDFInfo
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- CN104485121A CN104485121A CN201410678195.5A CN201410678195A CN104485121A CN 104485121 A CN104485121 A CN 104485121A CN 201410678195 A CN201410678195 A CN 201410678195A CN 104485121 A CN104485121 A CN 104485121A
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Abstract
The invention provides a method and a system for automatically setting sound effect parameters. The method comprises the steps of firstly, obtaining a music header file of a file currently to be played and determining the corresponding music type according to the music header file; judging whether sound effect parameters need to be changed or not according to the music type, if yes, obtaining the corresponding sound effect parameters of the music type according to a music type and sound effect parameter corresponding table which is set in advance, and decoding and playing the file to be played. By the method provided by the invention, the sound effect parameters are set automatically through analyzing the header file of a music, the sound effect parameters can be changed into the sound effect parameters suitable for the current music type automatically without manual setup of users, and the problem that music quality is not good due to the single sound effect is also avoided.
Description
Technical field
The present invention relates to audio signal processing technique field, in particular a kind of method and system of Lookup protocol sound effect parameters.
Background technology
Along with the continuous progress of science and technology and the development of society, the combination degree of Internet technology and electronic technology is more and more higher, and the performance requirement of people to smart machine is also more and more higher.In the prior art, user is when carrying out mp3 file and playing, and the unicity of audio affects the result of broadcast of audio file, needs user manually to arrange the audio equalizer of specialty to regulate music style, cause the loaded down with trivial details of operation, and easily occur arranging inaccurate and reduce the phenomenon of musical qualities.
Therefore prior art awaits further improvement.
Summary of the invention
In view of above-mentioned weak point of the prior art, the object of the invention is to for user provides a kind of method and system of Lookup protocol sound effect parameters, being intended to solve in prior art in intelligent terminal can not intelligent set sound effect parameters, manually need arrange audio equalizer to obtain the problem of different audio.
The technical scheme that technical solution problem of the present invention adopts is as follows:
A method for Lookup protocol sound effect parameters, wherein, described method comprises step:
A, obtain the music header file of current file to be played, and determine corresponding music type according to described music header file;
B, judging whether to change sound effect parameters according to described music type, then obtaining sound effect parameters corresponding to described music type according to show corresponding with sound effect parameters of music type pre-set when being, and treat played file and carry out decoding broadcasting.
The method of described Lookup protocol sound effect parameters, wherein, described steps A specifically comprises:
A1, obtain the music header file of current file to be played, and judge whether described music header file comprises ID3 information;
A2, when described music header file comprises described ID3 information, then determine corresponding music type according to described ID3 information;
A3, when described music header file does not comprise described ID3 information, then determine that corresponding music type is default type.
The method of described Lookup protocol sound effect parameters, wherein, also comprises before described steps A:
S, pre-set that a music type is corresponding with sound effect parameters to be shown, and store.
The method of described Lookup protocol sound effect parameters, wherein, described ID3 information comprises singer, title, album name, age and music type information.
The method of described Lookup protocol sound effect parameters, wherein, described step B specifically comprises:
B1, judge that whether described music type is consistent with the music type of last played file;
B2, when described music type is consistent with the music type of last played file, then do not change current sound effect parameters, and treat played file and carry out decoding and play;
B3, when the music type of described music type and last played file is inconsistent, then obtain sound effect parameters corresponding to described music type according to show corresponding with sound effect parameters of described music type, and the sound effect parameters of playback equalizer is configured to sound effect parameters corresponding to described music type, then treat played file carry out decoding play.
A system for Lookup protocol sound effect parameters, wherein, comprising:
Music type acquisition module, for obtaining the music header file of current file to be played, and determines corresponding music type according to described music header file;
Sound effect parameters configuration module, for judging whether to change sound effect parameters according to described music type, then obtain sound effect parameters corresponding to described music type according to show corresponding with sound effect parameters of music type that pre-set when being, and treat played file and carry out decoding broadcasting.
The system of described Lookup protocol sound effect parameters, wherein, described music type acquisition module specifically comprises:
First judging unit, for obtaining the music header file of current file to be played, and judges whether described music header file comprises ID3 information;
First music type acquiring unit, for when described music header file comprises described ID3 information, then determines corresponding music type according to described ID3 information;
Second music type acquiring unit, for when described music header file does not comprise described ID3 information, then determines that corresponding music type is default type.
The system of described Lookup protocol sound effect parameters, wherein, also comprises:
Arrange module, for pre-setting, a music type is corresponding with sound effect parameters to be shown, and stores.
The system of described Lookup protocol sound effect parameters, wherein, described ID3 information comprises singer, title, album name, age and music type information.
The system of described Lookup protocol sound effect parameters, wherein, described sound effect parameters configuration module specifically comprises:
Second judging unit, for judging that whether described music type is consistent with the music type of last played file;
First music parameter configuration unit, for when described music type is consistent with the music type of last played file, does not then change current sound effect parameters, and treat played file carry out decoding play;
Second music parameter dispensing unit, for when the music type of described music type and last played file is inconsistent, then obtain sound effect parameters corresponding to described music type according to show corresponding with sound effect parameters of described music type, and the sound effect parameters of playback equalizer is configured to sound effect parameters corresponding to described music type, then treat played file carry out decoding play.
The method and system of a kind of Lookup protocol sound effect parameters provided by the present invention, method comprises: the music header file first obtaining current file to be played, and determines corresponding music type according to described music header file; And judge whether to change sound effect parameters according to described music type, then obtain sound effect parameters corresponding to described music type according to show corresponding with sound effect parameters of music type that pre-set when being, and treat played file and carry out decoding broadcasting.The present invention, by resolving the header file Lookup protocol sound effect parameters of music, manually arranges the music parameter that automatically can be altered to applicable current music type, also avoids the problem making because audio is single musical qualities not good simultaneously without the need to user.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of the method preferred embodiment of Lookup protocol sound effect parameters of the present invention.
Fig. 2 is the particular flow sheet of step S100 in the method for Lookup protocol sound effect parameters of the present invention.
Fig. 3 is the particular flow sheet of step S200 in the method for Lookup protocol sound effect parameters of the present invention.
Fig. 4 is the structured flowchart of the system preferred embodiment of Lookup protocol sound effect parameters of the present invention.
Embodiment
For making object of the present invention, technical scheme and advantage clearly, clearly, developing simultaneously referring to accompanying drawing, the present invention is described in more detail for embodiment.Should be appreciated that specific embodiment described herein only for explaining the present invention, being not intended to limit the present invention.
Refer to Fig. 1, Fig. 1 is the process flow diagram of the method preferred embodiment of Lookup protocol sound effect parameters of the present invention.As shown in Figure 1, described method comprises step:
S100, obtain the music header file of current file to be played, and determine corresponding music type according to described music header file;
S200, judging whether to change sound effect parameters according to described music type, then obtaining sound effect parameters corresponding to described music type according to show corresponding with sound effect parameters of music type pre-set when being, and treat played file and carry out decoding broadcasting.
The present invention is by determining the music type belonging to current played file according to music header file, when they are different from the music type that the last time plays, then the music type pre-set is corresponding with sound effect parameters show in obtain corresponding sound effect parameters, and treat played file carry out decoding play.By the embodiment of the present invention, the sound effect parameters of intelligent set current played file can be realized, select suitable audio that the tonequality of current played file is improved.
Specifically, the present invention is specially adapted for arranging the sound effect parameters of mp3 file.Mp3 file is made up of series of frames, it adopts lossy compression method mode to sound signal, in order to reduce audio distortions degree, " sense organ coding techniques " is adopted to mp3 file, namely first carry out spectrum analysis to audio file during coding, then filter noise level with filtrator, then each remaining frame is broken up arrangement by mode by quantifying, finally form the MP3 file with higher compression ratios, and enable the file after compression reach the sound effect of relatively former source of sound when playback.
Mp3 file is divided into three parts substantially: ID3V2 (TAG_V2), Frame, and ID3V1 (TAG_V1).Wherein, ID3V2 contains author, the information such as composition and special edition, and length is not fixed, and extends the quantity of information of ID3V1; Frame is a series of frame in MP3, and each Frame is divided into again frame head and voice data two parts, and frame head have recorded bit rate, the information such as sampling rate and version of MP3, separate between each frame; ID3V1 then contains the information such as author, composition and special edition, and length is 128BYTE.
Parsing music header file in the embodiment of the present invention is data by reading frame head in mp3 file and carries out decoding realizing.Long 4 bytes of frame head, for the mp3 file of constant bitrate, the frame head form of all frames is the same.Be the additional information of variable-length after frame head, for the mp3 file of standard, its length is 32 bytes, is the voice data of compression, starts to decode when demoder is read herein after additional information.
The data structure of frame head is as follows:
typedef FrameHeader {
Unsigned int sync:11; // synchronizing information
Unsigned int version:2; // version
Unsigned int layer:2; // layer
Unsigned int error protection:1; // CRC check
Unsigned int bitrate_index:4; // bit rate
Unsigned int sampling_frequency:2; // sample frequency
Unsigned int padding:1; // frame length regulates
Unsigned int private:1; // reserved word
Unsigned int mode:2; // sound channel mode
Unsigned int mode extension:2; // augmented pattern
Unsigned int copyright:1; // copyright
Unsigned int original:1; // master mark
Unsigned int emphasis:2; // emphasize pattern
}HEADER, *LPHEADER。
MP3 frame length depends on bit rate (bitrate) and frequency, and computing formula is:
Mpeg1.0 layer1: frame length=(48000*bitrate)/sampling_freq+padding,
Layer2 & 3: frame length=(144000*bitrate)/sampling_freq+padding;
Mpeg2.0 layer1: frame length=(24000*bitrate)/sampling_freq+padding,
Layer2 & 3: frame length=(72000*bitrate)/sampling_freq+padding.
Such as bit rate is 64kbps, and sample frequency (sampling_freq) is 44.1kHz, and when frame length regulates (padding) to be 1, the frame length of MP3 is 210 bytes.
Whether the length of voice data changes, and depends on whether the bit rate of frame head changes, the standard regulation of MP3, and the mp3 file of constant bit rate is called CBR, and most of mp3 file is all CBR; And the mp3 file changing bit rate is called VBR, its audio frequency length is change, and the length of each Frame also may be change.As a MP3 song, it has three version: 96Kbps (96 kilobit bits per second), 128Kbps and 192Kbps, and wherein Kbps indicates music data volume per second, and Kbps value is higher, and tonequality is better, and file is also larger.
Now CBR and VBR is contrasted:
1), CBR: during constant bitrate, the size of its Frame is fixing (formula is described above), as long as know file total length and frame length, can by playing the operations such as every frame needs 26ms to calculate the T.T. of MP3 broadcasting, and the number also by counting frame controls F.F., rewind is put slowly.
2), VBR: deposit " Xing " mark in its first effective Frame in mp3 file, show that this MP3 file is VBR, house total number of Frame in MP3 file in first Frame simultaneously, the convenient T.T. obtaining this mp3 file and play, 100 bytes are also had to house INDEX Frame in MP3 being divided into 100 time slices in addition, suppose the MP3 song of 4 minutes, 240S, be divided into 100 sections, the mistiming of every two adjacent INDEX is exactly 2.4S, so by this INDEX, as long as the Frame of pre-process and post-process minority, just can find out the frame head that we need F.F. fast.The structured data table of VBR file first Frame is as follows:
In addition, in prior art, the general ID3 standard that adopts stores music informations such as the title of the song in MP3, album name, times, has made ID3 V1.0 so far, V1.1, V2.0, V2.3 and V2.4 standard.Version is higher, and the relevant information of record is more enriched detailed, but also can bring difficulty to software programming.Adopt ID3V1.0 standard to carry out information storage at mp3 file tail in the specific embodiment of the invention, its length is 128 bytes.
The structured data of ID3V1.0 end-of-file is as follows:
In the embodiment of the present invention, first carry out step S100, namely first obtain the music header file of current file to be played, and determine corresponding music type according to described music header file.As shown in Figure 2, its concrete steps comprise:
S101, obtain the music header file of current file to be played, and judge whether described music header file comprises ID3 information;
S102, when described music header file comprises described ID3 information, then determine corresponding music type according to described ID3 information;
S103, when described music header file does not comprise described ID3 information, then determine that corresponding music type is default type.
Specifically, file to be played in the present invention is mp3 file, first judge whether its music header file includes ID3 information namely containing title of the song, album name, the music information in time etc., this ID3 information can by different titles of the song, album name, time, the information such as author determine the music type of this file to be played, when music header file includes ID3 information, then can determine its music type and select suitable sound effect parameters to play, user-friendly, and can reduce and occur that file to be played and sound effect parameters are not mated because arranging improper, the problem of high-quality music cannot be obtained.And when music header file includes ID3 information, then determine that its music type is default type, be common broadcasting type, do not repeat them here.
Further, before the present invention program implements, also comprise:
S, pre-set that a music type is corresponding with sound effect parameters to be shown, and store.
In embodiments of the invention, select 147 kinds of common music types, and arrange sound effect parameters respectively to 147 kinds of music types, the music of often kind of music type realizes best result of broadcast under corresponding audio parameter configuration.The music correspondence of such as Bruce style is provided with sound effect parameters 0, and the music correspondence of classic rock style is provided with sound effect parameters 1, and the music of rural style is provided with sound effect parameters 2 etc.
Show according to this music type is corresponding with sound effect parameters, can the required sound effect parameters play of quick obtaining music to be played, thus select suitable music style to play.
In preferred embodiment, described ID3 information comprises singer, title, album name, age and music type information.According to the information such as bent wind and album name of singer, the music type of this music tentatively can be determined.
After determining suitable music type, then enter step S200, first judge whether to change sound effect parameters according to described music type, when being then the music type pre-set is corresponding with sound effect parameters show in obtain sound effect parameters corresponding to described music type, and treat played file carry out decoding play.As shown in Figure 3, Fig. 3 is the particular flow sheet of step S200 in the method for Lookup protocol sound effect parameters of the present invention, and its concrete steps comprise:
S201, judge that whether described music type is consistent with the music type of last played file;
S202, when described music type is consistent with the music type of last played file, then do not change current sound effect parameters, and treat played file and carry out decoding and play;
S203, when the music type of described music type and last played file is inconsistent, then obtain sound effect parameters corresponding to described music type according to show corresponding with sound effect parameters of described music type, and the sound effect parameters of playback equalizer is configured to sound effect parameters corresponding to described music type, then treat played file carry out decoding play.
Specifically, after mp3 file is play, automatically the music type of this played file can be preserved, upper once play time, first judge that whether the music type of file to be played identical with the music type of last time, when identical, last set good sound effect parameters can be directly adopted to play, need not search the sound effect parameters corresponding to file music type to be played again, simplify the operation step, improves the efficiency of broadcasting.And when described music type is different from the music type of last played file, then again obtain the sound effect parameters corresponding to this music type, and treat played file carry out decoding play.
Further, the sound effect parameters of playback equalizer is configured to sound effect parameters corresponding to described music type, solves in existing scheme and need user manually to carry out the tedious steps arranged, avoid the problem that the unicity of audio makes musical qualities not good simultaneously.
Based on said method, the present invention also provides a kind of system of Lookup protocol sound effect parameters, and as shown in Figure 4, the system of described Lookup protocol sound effect parameters comprises:
Music type acquisition module 100, for obtaining the music header file of current file to be played, and determines corresponding music type according to described music header file; As detailed above.
Sound effect parameters configuration module 200, for judging whether to change sound effect parameters according to described music type, when being then the music type pre-set is corresponding with sound effect parameters show in obtain sound effect parameters corresponding to described music type, and treat played file carry out decoding play; As detailed above.
Embodiment further, described music type acquisition module 100 specifically comprises:
First judging unit, for obtaining the music header file of current file to be played, and judges whether described music header file comprises ID3 information; As detailed above.
First music type acquiring unit, for when described music header file comprises described ID3 information, then determines corresponding music type according to described ID3 information; As detailed above.
Second music type acquiring unit, for when described music header file does not comprise described ID3 information, then determines that corresponding music type is default type; As detailed above.
Embodiment further, the system by resolving music header file Lookup protocol sound effect parameters of the present invention also comprises:
Arrange module, for pre-setting, a music type is corresponding with sound effect parameters to be shown, and stores; As detailed above.
Embodiment further, described ID3 information comprises singer, title, album name, age and music type information; As detailed above.
Embodiment further, described sound effect parameters configuration module 200 specifically comprises:
Second judging unit, for judging that whether described music type is consistent with the music type of last played file; As detailed above.
First music parameter configuration unit, for when described music type is consistent with the music type of last played file, does not then change current sound effect parameters, and treat played file carry out decoding play; As detailed above.
Second music parameter dispensing unit, for when the music type of described music type and last played file is inconsistent, then obtain sound effect parameters corresponding to described music type according to show corresponding with sound effect parameters of described music type, and the sound effect parameters of playback equalizer is configured to sound effect parameters corresponding to described music type, then treat played file carry out decoding play; As detailed above.
In sum, a kind of method and system by resolving music header file Lookup protocol sound effect parameters provided by the present invention, method comprises: the music header file first obtaining current file to be played, and determines corresponding music type according to described music header file; And judge whether to change sound effect parameters according to described music type, then obtain sound effect parameters corresponding to described music type according to show corresponding with sound effect parameters of music type that pre-set when being, and treat played file and carry out decoding broadcasting.The present invention, by resolving the header file Lookup protocol sound effect parameters of music, manually arranges the music parameter that automatically can be altered to applicable current music type, also avoids the problem making because audio is single musical qualities not good simultaneously without the need to user.
Be understandable that, for those of ordinary skills, can be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, and all these change or replace the protection domain that all should belong to the claim appended by the present invention.
Claims (10)
1. a method for Lookup protocol sound effect parameters, is characterized in that, described method comprises step:
A, obtain the music header file of current file to be played, and determine corresponding music type according to described music header file;
B, judging whether to change sound effect parameters according to described music type, then obtaining sound effect parameters corresponding to described music type according to show corresponding with sound effect parameters of music type pre-set when being, and treat played file and carry out decoding broadcasting.
2. the method for Lookup protocol sound effect parameters according to claim 1, is characterized in that, described steps A specifically comprises:
A1, obtain the music header file of current file to be played, and judge whether described music header file comprises ID3 information;
A2, when described music header file comprises described ID3 information, then determine corresponding music type according to described ID3 information;
A3, when described music header file does not comprise described ID3 information, then determine that corresponding music type is default type.
3. the method for Lookup protocol sound effect parameters according to claim 1, is characterized in that, also comprises before described steps A:
S, pre-set that a music type is corresponding with sound effect parameters to be shown, and store.
4. the method for Lookup protocol sound effect parameters according to claim 2, is characterized in that, described ID3 information comprises singer, title, album name, age and music type information.
5. the method for Lookup protocol sound effect parameters according to claim 2, is characterized in that, described step B specifically comprises:
B1, judge that whether described music type is consistent with the music type of last played file;
B2, when described music type is consistent with the music type of last played file, then do not change current sound effect parameters, and treat played file and carry out decoding and play;
B3, when the music type of described music type and last played file is inconsistent, then obtain sound effect parameters corresponding to described music type according to show corresponding with sound effect parameters of described music type, and the sound effect parameters of playback equalizer is configured to sound effect parameters corresponding to described music type, then treat played file carry out decoding play.
6. a system for Lookup protocol sound effect parameters, is characterized in that, comprising:
Music type acquisition module, for obtaining the music header file of current file to be played, and determines corresponding music type according to described music header file;
Sound effect parameters configuration module, for judging whether to change sound effect parameters according to described music type, then obtain sound effect parameters corresponding to described music type according to show corresponding with sound effect parameters of music type that pre-set when being, and treat played file and carry out decoding broadcasting.
7. the system of Lookup protocol sound effect parameters according to claim 6, is characterized in that, described music type acquisition module specifically comprises:
First judging unit, for obtaining the music header file of current file to be played, and judges whether described music header file comprises ID3 information;
First music type acquiring unit, for when described music header file comprises described ID3 information, then determines corresponding music type according to described ID3 information;
Second music type acquiring unit, for when described music header file does not comprise described ID3 information, then determines that corresponding music type is default type.
8. the system of Lookup protocol sound effect parameters according to claim 6, is characterized in that, also comprise:
Arrange module, for pre-setting, a music type is corresponding with sound effect parameters to be shown, and stores.
9. the system of Lookup protocol sound effect parameters according to claim 7, is characterized in that, described ID3 information comprises singer, title, album name, age and music type information.
10. the system of Lookup protocol sound effect parameters according to claim 7, is characterized in that, described sound effect parameters configuration module specifically comprises:
Second judging unit, for judging that whether described music type is consistent with the music type of last played file;
First music parameter configuration unit, for when described music type is consistent with the music type of last played file, does not then change current sound effect parameters, and treat played file carry out decoding play;
Second music parameter dispensing unit, for when the music type of described music type and last played file is inconsistent, then obtain sound effect parameters corresponding to described music type according to show corresponding with sound effect parameters of described music type, and the sound effect parameters of playback equalizer is configured to sound effect parameters corresponding to described music type, then treat played file carry out decoding play.
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