CN102522083A - Method for searching hummed song by using mobile terminal and mobile terminal thereof - Google Patents
Method for searching hummed song by using mobile terminal and mobile terminal thereof Download PDFInfo
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- CN102522083A CN102522083A CN2011103879040A CN201110387904A CN102522083A CN 102522083 A CN102522083 A CN 102522083A CN 2011103879040 A CN2011103879040 A CN 2011103879040A CN 201110387904 A CN201110387904 A CN 201110387904A CN 102522083 A CN102522083 A CN 102522083A
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Abstract
The invention discloses a method for searching a hummed song by using a mobile terminal and the mobile terminal thereof. The method for searing the hummed song by using the mobile terminal includes obtaining audio information of humming of users by using a microphone of the mobile terminal; extracting musical notes for song searching from the audio information; and searching a target song in a local or network data base by adopting dynamic wrapping algorithm according to the musical notes. The mobile terminal comprises the microphone for obtaining the audio information of the humming of the users; an extracting module connected with the microphone and used for extracting the musical notes from the audio information for searching the songs; and a searching module connected with the extracting module and used for searching the target song from a plurality of songs to be selected, and the songs to be selected are stored in the local or network data base. Users conduct searching in the data base by using the received hummed audio so as to search corresponding songs according to a hummed melody.
Description
Technical field
The present invention relates to the portable terminal technology, relate in particular to a kind of method and portable terminal thereof of using mobile terminal to search humming song.
Background technology
Voice humming technology is the melody through one section song of user's humming, searches the technology of corresponding song.Utilize the Computer Analysis technology with the automatic music note spectral technology of muscial acoustics conversion of signals, be widely used in content-based music retrieval aspect for symbol.
At present; The song search function is mainly through utilizing information such as song title, the lyrics or singer in the storage song database, to locate song; The song that finds the user to seek; But, when but forgetting song title, the lyrics or singer, then can't utilize such function of search to find the song of wanting when the user is merely able to hum out one section melody.
Summary of the invention
In order to overcome defective of the prior art, the invention provides a kind of method and portable terminal thereof of using mobile terminal to search humming song, to realize searching the song that needs are sought quickly and easily according to certain section melody of humming.
For realizing above-mentioned purpose, the invention provides a kind of method of using mobile terminal to search humming song, comprising: the microphone of using portable terminal obtains the audio-frequency information of user's humming; From said audio-frequency information, extract the note that is used to carry out song search; Adopt dynamic regular algorithm according to said note, ferret out song in this locality or network data base.
For realizing above-mentioned purpose, the present invention also provides a kind of portable terminal, comprising: microphone is used to obtain the audio-frequency information that the user hums; Extraction module is connected with said microphone, is used for extracting the note that is used to carry out song search from said audio-frequency information; Search module is connected with said extraction module, is used for adopting dynamic regular algorithm according to said note ferret out song in a plurality of candidate song of in this locality or network data base, storing.
Can know by above technical scheme; The present invention is through receiving the audio frequency of user's humming; Utilize audio frequency after treatment in database, to search for similar song; Thereby make the user can search the song that needs are sought quickly and easily, and can be widely applied to music or video playback field according to certain section melody of humming.
Description of drawings
Fig. 1 uses the process flow diagram of the method for mobile terminal to search humming song for the embodiment of the invention;
Fig. 2 is the synoptic diagram of a kind of structure of embodiment of the invention portable terminal;
Fig. 3 is the synoptic diagram of the another kind of structure of embodiment of the invention portable terminal.
Embodiment
Fig. 1 uses the process flow diagram of the method for mobile terminal to search humming song for the embodiment of the invention.The method concrete steps of the application mobile terminal to search humming song that the embodiment of the invention provides comprise:
The microphone of step 101, application portable terminal obtains the audio-frequency information of user's humming;
Concrete, the user is facing to the humming of the microphone on the portable terminal, and portable terminal receives the audio frequency of user's humming, and this audio frequency is handled; From this audio frequency, extract some notes, the note that extracts is used for song search; Adopt dynamic regular algorithm, search and the higher song of being extracted of note similarity in this locality or network data base.
The method of application mobile terminal to search humming song provided by the invention; Through receiving the audio frequency of user's humming; Utilize audio frequency after treatment in database, to search for similar song; Thereby make the user can search the song that needs are sought quickly and easily, and can be widely applied to music or video playback field according to certain section melody of humming.
In the above-described embodiments, it is following from audio-frequency information, to extract the method for the note be used to carry out song search.
The user clicks " recording " button on display screen; Get into the humming system; Eject dialog box immediately, show current operation status, also comprise zone, " recording humming " button, " singing search " button and " logging off " button of showing lyrics content in the panel at title block.Wherein, the voice that the regional explicit user that shows the lyrics content hum the lyrics and the institute's audio frequency of humming correspondence in the audio frequency are spoken and are composed; In order to prevent to click " recording humming " just button can be hummed again because maloperation and error starting recording function after getting into the humming system, need to click earlier " singing search " button; Click " logging off " button and can directly withdraw from the humming system.The left side of title block shows recording time, and the right side shows that recording time left, system need be preset and allows the time span recorded.When recording time left was shown as zero, the humming system stopped to record automatically, and corresponding startup is to the recognizer of audio frequency that the user hums, and the icon that the demonstration waiting system is handled on panel; When recording time left was non-vanishing, the user prepared to finish humming, can click " finishing humming records " button and finish to record, and the humming system starts the recognizer to audio frequency that the user hums automatically, and on panel, shows the icon that waiting system is handled.
The step of identification audio frequency that the user hums comprises:
At first; From the audio frequency of user's humming, extract fundamental frequency information, from audio-frequency information, extracting fundamental frequency information is one step of key that from audio frequency, extracts note, if fundamental frequency information that extracts and physical presence are than large deviation; Can produce considerable influence to subsequent step; Therefore, in order to extract well behaved fundamental frequency information, adopt have than strong robustness and extraction rate fast based on harmonic wave and the fundamental frequency method for distilling; Through adaptive energy threshold, voice and non-speech portion are separated, from fundamental frequency information, extract phonological component wherein; Jump through harmonic wave and energy changes again, and phonological component is divided into a plurality of continuous voiced segments.
Secondly, in each continuous voiced segments,, continuous voiced segments is divided into a plurality of note sections according to the fluctuating of harmonic wave and energy; Do not surpass the part of half interval if do not comprise the intensity of variation of fundamental frequency in the note section, then this note section is extracted as a note; Surpass the part of half interval if comprise the intensity of variation of fundamental frequency in the note section; Need this note section is cut apart again; The intensity of variation of this fundamental frequency is extracted as a note above the part of half interval, and continuous part in the part except that this part in this note section is extracted as a note respectively.When from the audio frequency that the user hummed, extracting above 7 notes, the intensity of variation of the accuracy rate curve of humming is tending towards smooth; When from the audio frequency that the user hummed, extracting above 9 notes, the accuracy rate of humming remains unchanged basically, and accuracy can reach more than 90%.
Concrete, the user is facing to the humming of the microphone on the portable terminal, and portable terminal receives the audio frequency of user's humming; From audio frequency, extract fundamental frequency,, fundamental frequency is divided into phonological component and non-speech portion through adaptive energy threshold; Phonological component is wherein extracted, further phonological component is divided into a plurality of continuous voiced segments, again each continuous voiced segments is divided into a plurality of note sections; And then, the note section is extracted as note to the intensity of variation of fundamental frequency in each note section, be used to search for song.
The method of application mobile terminal to search humming song provided by the invention; Through receiving the audio frequency of user's humming; From audio frequency, extract the foundation of a plurality of notes, make the user when need not to know information such as song title, the lyrics or singer, also can carry out song search as the search song.
In the above-described embodiments, adopt dynamic regular algorithm based on note, the method for ferret out song is following in this locality or network data base.
Hum the note that extracts in the audio frequency based on the user, can in this locality or network data base, search for corresponding target song,, adopt the strategy of twice search in order to improve the efficient of song search.Search for fast through the less rough search method of calculated amount earlier; The position of finding similar note in song, possibly occur; On these positions, carry out further fine search then again; Finally, identify and the higher target song of audio frequency similarity degree of humming according to second time fine search.
The concrete steps of carrying out song search comprise:
At first; Adopt the method for pitch mark M-Note to carry out rough search; The number of times that the note that obtains to be extracted occurs in candidate song; Number of times this section audio of assessment that in each candidate song, occurs according to each note that is extracted and the similarity degree of each candidate song, the number of times that the note that is extracted occurs in candidate song is many more, explains that then the similarity degree of this section audio and this candidate song is high more.Through obtaining preliminary candidate song behind the rough search, and the position that in preliminary candidate song, occurs of each note.
Secondly, according to the position that note or note occur in preliminary candidate song, the regular algorithm of application of dynamic is got rid of the lower candidate song of similarity degree, obtains said target song.
Concrete, the user is facing to the humming of the microphone on the portable terminal, and portable terminal receives the audio frequency of user's humming, and this audio frequency is handled; From this audio frequency, extract some notes, both similarity degrees of number of times assessment that utilize the note extract in candidate song, to occur obtain preliminary candidate song through rough search, and the note that is used for searching for is in position that preliminary candidate song occurs; And be foundation with the note that extracted with the position that it occurs in preliminary candidate song, the regular algorithm of application of dynamic obtains the higher target song of similarity degree.
Display-object song in the title block of display screen, " being " buttons play target song is clicked in the brief introduction of display-object song in panel, and the information of pointing out inquiry whether to play this song, clicks " denying " button and withdraws from the humming system.When the humming system did not find target song in local storage, whether the prompting inquiry connected network search, clicked " being " pushbutton enable web search function, clicked " denying " button and withdrawed from the humming system.
The method of application mobile terminal to search humming song provided by the invention; Through receiving the audio frequency of user's humming; With the some notes that from audio frequency, extract is the foundation of search song; Utilize rough search and dynamic regular algorithm, can in this locality or network data base, search the target song higher with this section audio similarity degree.
Fig. 2 is the synoptic diagram of a kind of structure of embodiment of the invention portable terminal.As shown in Figure 2, the portable terminal that the embodiment of the invention provides comprises the microphone 21 of the audio-frequency information that is used to obtain user's humming; In order to arrive target song, also comprise extraction module 22 and the search module 23 that is connected with extraction module 22 in the portable terminal according to the audio search of user's humming.Wherein, extraction module 22 is connected with microphone 21, is used for extracting the note that is used to carry out song search from audio-frequency information; Search module 23 is connected with extraction module 22, is used for adopting dynamic regular algorithm according to note ferret out song in a plurality of candidate song of in this locality or network data base, storing.
Fig. 3 is the synoptic diagram of the another kind of structure of embodiment of the invention portable terminal.
In the above-described embodiments, extraction module 22 can comprise that first extracts submodule 221, the second extraction submodule 222 and the 3rd extraction submodule 223.Wherein the first extraction submodule 221 is connected with microphone 21, is used for extracting fundamental frequency information from said audio-frequency information; The second extraction submodule 222 and first extracts submodule 221 and is connected, and is used for extracting phonological component from said fundamental frequency information, and said phonological component is divided into a plurality of continuous voiced segments; The 3rd extraction submodule 223 and second extracts submodule 222 and is connected; Be used for each continuous voiced segments is divided into a plurality of note sections; Do not surpass the part of half interval if do not comprise the intensity of variation of said fundamental frequency in the note section, then this note section is extracted as a note; Surpass the part of half interval if comprise the intensity of variation of said fundamental frequency in the note section, then this part is extracted as a note, and continuous part in the part except that this part in this note section is extracted as a note respectively.
In the above-described embodiments, search module 23 can comprise that first searches for submodule 231, the second search submodule 232.Wherein, the first search submodule 231 is connected with the 3rd extraction submodule 223, is used for the number of times that occurs in said candidate song according to the note that is extracted, obtains the position that a plurality of preliminary candidate song and said note occur in said preliminary candidate song; The second search submodule 232 and first is searched for submodule 231 and is connected, and is used for according to said note or said note in the position that said preliminary candidate song occurs, and the regular algorithm of application of dynamic obtains said target song.
In the above-described embodiments, portable terminal also comprises the memory module 24 that is connected with the first search submodule 231, is used to store said candidate song.
Concrete, the method for the application mobile terminal to search humming song that the embodiment of the invention provides can repeat no more referring to the treatment step of describing among the said method embodiment here.
Portable terminal provided by the invention through receiving the audio frequency of user's humming, utilizes audio frequency after treatment in database, to search for similar song, thereby makes the user can search the song that needs are sought according to certain section melody of humming.
One of ordinary skill in the art will appreciate that: all or part of step that realizes above-mentioned each method embodiment can be accomplished through the relevant hardware of programmed instruction.Aforesaid program can be stored in the computer read/write memory medium.This program the step that comprises above-mentioned each method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
What should explain at last is: above each embodiment is only in order to explaining technical scheme of the present invention, but not to its restriction; Although the present invention has been carried out detailed explanation with reference to aforementioned each embodiment; Those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, perhaps to wherein part or all technical characteristic are equal to replacement; And these are revised or replacement, do not make the scope of the essence disengaging various embodiments of the present invention technical scheme of relevant art scheme.
Claims (7)
1. a method of using mobile terminal to search humming song is characterized in that, comprising:
The microphone of using portable terminal obtains the audio-frequency information of user's humming;
From said audio-frequency information, extract the note that is used to carry out song search;
Adopt dynamic regular algorithm based on said note, ferret out song in this locality or network data base.
2. the method for application mobile terminal to search according to claim 1 humming song is characterized in that, the said note that is used to carry out song search that from said audio-frequency information, extracts comprises:
From said audio-frequency information, extract fundamental frequency information, and from said fundamental frequency information, extract phonological component, said phonological component is divided into a plurality of continuous voiced segments;
Each continuous voiced segments is divided into a plurality of note sections,, then this note section is extracted as a note if do not comprise in the note section that the intensity of variation of said fundamental frequency surpasses the part of half interval; Surpass the part of half interval if comprise the intensity of variation of said fundamental frequency in the note section, then this part is extracted as a note, and continuous part in the part except that this part in this note section is extracted as a note respectively.
3. the method for application mobile terminal to search according to claim 1 and 2 humming song is characterized in that, saidly adopts dynamic regular algorithm according to said note, and the ferret out song comprises in this locality or network data base:
Use the method for pitch mark M-Note, the number of times that the note that obtains to be extracted occurs in candidate song;
According to the number of times that the note that is extracted occurs, obtain the position that a plurality of preliminary candidate song and said note occur in said preliminary candidate song in candidate song;
According to the position that said note or said note occur in said preliminary candidate song, the regular algorithm of application of dynamic obtains said target song.
4. a portable terminal is characterized in that, comprising:
Microphone is used to obtain the audio-frequency information that the user hums;
Extraction module is connected with said microphone, is used for extracting the note that is used to carry out song search from said audio-frequency information;
Search module is connected with said extraction module, is used for adopting dynamic regular algorithm according to said note ferret out song in a plurality of candidate song of in this locality or network data base, storing.
5. portable terminal according to claim 4 is characterized in that, said extraction module comprises:
First extracts submodule, is connected with said microphone, is used for extracting fundamental frequency information from said audio-frequency information;
Second extracts submodule, is connected with the said first extraction submodule, is used for extracting phonological component from said fundamental frequency information, and said phonological component is divided into a plurality of continuous voiced segments;
The 3rd extracts submodule; Be connected with the said second extraction submodule; Be used for each continuous voiced segments is divided into a plurality of note sections,, then this note section extracted as a note if do not comprise in the note section that the intensity of variation of said fundamental frequency surpasses the part of half interval; Surpass the part of half interval if comprise the intensity of variation of said fundamental frequency in the note section, then this part is extracted as a note, and continuous part in the part except that this part in this note section is extracted as a note respectively.
6. according to claim 4 or 5 described portable terminals, it is characterized in that said search module comprises:
The first search submodule; Be connected with said the 3rd extraction submodule; Be used to use the method for pitch mark M-Note; The number of times that the note that obtains to be extracted occurs in candidate song based on the number of times that the note that is extracted occurs, obtains the position that a plurality of preliminary candidate song and said note occur in said preliminary candidate song in said candidate song;
The second search submodule is connected with the said first search submodule, is used for according to said note or said note in the position that said preliminary candidate song occurs, and the regular algorithm of application of dynamic obtains said target song.
7. portable terminal according to claim 6 is characterized in that, also comprises:
Memory module with the said first search submodule, is used to store said candidate song.
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| CN109979422B (en) * | 2019-02-21 | 2021-09-28 | 百度在线网络技术（北京）有限公司 | Fundamental frequency processing method, device, equipment and computer readable storage medium |
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| CN102522083B (en) | 2014-03-05 |
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