KR20110034745A - Method of searching music - Google Patents

Abstract

PURPOSE: A method of searching music is provided to enable a user to easily input a desirable music by searching a music based on the variation direction of melody or rhythm. CONSTITUTION: The information on the variation direction of music melody or rhythm is stored in a music information database(S301). The variation direction of the melody or rhythm is obtained from the data inputted through a music searching window(S305). The music corresponding to the variation direction is searched from the music information database(S306). The kinds of the searched music are displayed in list according to similarity order(S307). The similarity is calculated by considering the variation direction of the melody or the rhythm.

Description

How to Search for Music {Method of Searching Music}

The present invention relates to a music retrieval method, and more particularly, to a music retrieval method in which a user searches for music using only a melody or rhythm memorized.

In recent years, blogs, homepages, and the like that use background music on the Internet, communication companies and other sites that provide sound source files (for example, MP3, etc.) have implemented and operated a music search engine. Here, the music search engine is implemented to search music based on text information such as album name, singer's name, song lyrics, and the like.

The music search engines provided by the prior art as described above are implemented to search music based on text information only, and perform music search by the process as shown in FIG.

Looking at the conventional music search method with reference to the flow chart of Figure 1 as follows.

First, when a user accesses a music search engine from a blog, a homepage, a carrier, or other sites on the Internet, the music search engine connects to a user authentication center to verify whether the currently connected user is a legitimate user (i.e., authentication ( (S101), a window for performing music search (i.e., a music search window) is displayed (S102).

Then, when the user inputs text information about the music to be searched into the displayed music search window, the music search engine checks the text information input by the user (S103) and selects a category (for example, album). The name, the name of the singer, the lyrics of the song, etc.) (S104).

In operation S105, a database storing music information corresponding to a category determined in operation S104 is searched to find music information including text information input by a user or similar information.

Thus, the music information found in step S105 described above is listed in order of high similarity with the text information input by the user to display the music information list (S106).

As described above, the music search engine according to the prior art searches for music based on text information and provides a list according to the degree of similarity, which is the case when there is no accurate information (ie, text information) about the music to be searched for. In other words, if the user does not know the text information correctly, the search system cannot be searched. In addition, even if the text information about the music that can be input to some extent, due to the nature of the text information search has a disadvantage that a system that influences the search results even a little uncertainty.

As shown in FIG. 2, there is an example of a website that searches for or recommends music based on information such as the mood of music, the year of publication, and the country of origin. 2 is a diagram showing an example of a website providing a music search according to the prior art.

However, this also adds to the user's abstract feelings and tastes and subjective judgments of the service providers that make up the database, so that similar music can be presented comprehensively, but far from accurate search.

In another example, the searcher is based on the similarity based on the similarity of the searcher's hum by using the microphone instead of the text information of the music as a voice signal, and comparing the received voice signal with a signal of music previously stored in a database. A method of providing is provided.

However, the general people each have a different degree of recognition of the sound, and there is a difference in expressing the recognized sound, and there is also a problem in the accuracy of the sound inputted by the humming, which is a big uncertainty for the music search. There is this.

In addition, the need for an additional device called 'microphone' cannot be easily and conveniently searched anytime, anywhere considering the surrounding environment of search users.

On the other hand, in the prior art, the user can find the music even when he / she remembers only the melody (i.e., high and low) or the rhythm (i.e., long and short) without knowing the above-mentioned text information about the music to be searched for. However, it would be very convenient if a technology was developed that would allow the user to search for the music only with melody or rhythm.

For example, music that a user walks on the street or heard somewhere is not easy to get textual information about the music and is easy to forget even if the lyrics are heard. In addition, even in the case of classical or pop music that you know a lot, it is not easy to search without text information about the music. That is, in the case of classical music, even if the melody is familiar, it is rare to memorize exactly the information of the composer and the name of the song.In the case of pop, it is not easy to memorize the lyrics in a foreign language. Since it is not frequently encountered, it is difficult to remember and search the name of an album or the name of a singer with a conventional system.

And in fact, the music bulletin board and the question and answer category often ask other users with abstract information such as the music and the mood of the music from where they came from, and the other users also answer based on their feelings, inaccurate memories, etc. It is often presented.

Therefore, if the user can search for music using only the melody or rhythm memorized, many users may provide the convenience of music search to easily find and use the music they are looking for.

The technical problem to be achieved by the present invention is to solve the above-mentioned disadvantages or needs, and the direction of change to the melody (ie, high and low) or rhythm (ie, long and short) of the music that the user wants to find. It provides a music search method to search music based on the.

In order to solve this problem, according to the present invention, the melody for the user to search for the music based on the direction of change to the melody (ie, the pitch of the sound) or the rhythm (ie, the length of the note) for the music that the user is looking for Or to implement a music search method based on the change direction of the rhythm. Also, according to the present invention, the music searcher searches for the music based on the melody change of the music to be found, the rhythm change of the music, or the melody change and the rhythm change of the music, and the search result Select, combine, or combine them in order to display the music results by listing them in the order of highest similarity.

According to an aspect of the present invention, in the music retrieval method, a database of information on the direction of change of the height of the sound or the length and length of the sound for each of the music is generated, thereby creating a music information database based on the height of the sound or the length and length of the change. Storing in advance; When the user accesses the music search engine, authenticating whether the connected user is a legitimate user, and then displaying a music search window; Obtaining a high or low change direction of the sound or a short and long change direction of the sound from data input through the music search window; Retrieving music from the music information database corresponding to the obtained high and low change direction or the short and long change direction of the sound; And it provides a music search method comprising the step of calculating the similarity compared to the high and low change direction or the long and short change direction of the sound for the searched music, the list of the similarity in order of high display.

Here, the music information database stores, as data, the high and low change direction of the sound for each of the music, whether the sound is higher, lower, or the same as the previous sound, or is the sound longer or shorter than the previous sound. Or it is characterized in that the direction of the change in the negative long and short as the data is stored.

In addition, the music information database, in the case of the keyboard, means that the sound is higher than the previous sound when pressing a button away from the basis of a specific button, the sound is lower than the previous sound when pressing a button that approaches When the same button is pressed, the same pitch is defined as meaning.

In the case of a keyboard, the music information database defines a specific button for notifying the start and end of the input, and is shorter than the previous button input time based on the time difference between the first button input and the second button input. It means that the sound length is shorter than the sound of, and when it is long, the sound length is longer than the previous sound, and when it is the same, it is defined as meaning the same sound length.

The displaying may include generating a final result in a ratio of a preset high and low change direction of the sound to a short and long change direction of the searched music, and changing the negative high and low change direction and the short and long change of the sound for the final result. The similarity is calculated by comparing with the direction, and the similarity is listed in the order of high similarity.

As described above, according to the present invention, the user searches for the music based on the direction of change of the melody (i.e., the height of the sound) or the rhythm (i.e., the length of the sound) for the music that the user wants to find. Can be easily entered, has higher search accuracy, increases service usage, and makes plagiarism much faster.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, except to exclude other components unless otherwise stated. In addition, the terms “… unit”, “… unit”, “… module” described in the specification mean a unit that processes at least one function or operation, which may be implemented by hardware or software or a combination of hardware and software. Can be.

Now, a music searching method according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

3 is a flowchart illustrating a music search method according to an embodiment of the present invention.

First, for each piece of music the user (ie, music searcher) is looking for, the music may be selected based on each or both of a melody change (i.e., change in pitch of the note) and a change in rhythm (i.e., change in short and long term). In order to be able to search, for each of the music, database the information on the direction of change for the melody (i.e. note height) or rhythm (i.e. note length and length), and based on the pitch of the note The music information database is stored in advance (S301). Here, the music information database is used to search for music that the user wants to find in cooperation with a music search engine.

In addition, music with lyrics, such as pop and popular songs, generally remembers the words with lyrics, and in the case of classical music, many notes are harmonized, but they are memorized based on the vocal rhythm. Can be configured to show higher search accuracy.

As a first example, if the melody stored in the music searcher is as shown in FIG. 4, the melody has a change as shown in FIG. 5 with respect to the previous note. 4 is a diagram illustrating an example of melody and rhythm stored by a music searcher, and FIG. 5 is a diagram illustrating a relative pitch change direction with respect to the melody illustrated in FIG. 4.

In Figure 5, '↑' means that the sound is higher than the previous sound, '↓' means that the sound is lower than the immediately preceding sound, '→' represents the same sound height. Here, it is not necessary to know how many degrees the sound is raised or how many degrees are lowered. Only the change direction of the pitch is used as data. Alternatively, '↑' may be represented as '1', '↓' as '2', and '→' as '3', and the present invention is not limited thereto. It is important to understand that all are possible.

In other words, a database of information about three melodies that the music searcher remembers is higher, lower, or the same as the previous note (that is, the information about the direction of change of the pitch). Save it.

Furthermore, for a keyboard connected to a PC (i.e., similar to a piano keyboard), when you press a button that is away from you based on a particular button (for example 'a') (for example, pressing 'f') Later, when you press 'g'), it means that the note is higher than the previous note, and when you press the approaching button (for example, when you press 'h' then 'g') It can be defined as meaning a lower pitch, and meaning the same pitch when the same button is pressed (for example, after pressing 'h' and then pressing 'h').

In the case of the melody illustrated in FIG. 4, for the 17 melodies stored by the music searcher, 16 pitch changes are used as search data (ie, pitch change data). In this case, since the number of ¹⁶ negative pitch changes is '3 ¹⁶ ', a very high degree of independence can be regarded as a basis for searching.

As a second example, the direction of change of rhythm (i.e., the direction of change in the long and short of the sound) can also be used in a similar concept, along with the high and low change direction of sound as described above.

If the rhythm memorized by the music searcher is as shown in Fig. 4, the rhythm has a change as shown in Fig. 6 with respect to the previous note of each note. Here, FIG. 6 is an exemplary diagram showing a direction of change in sound length relative to the rhythm shown in FIG. 4.

In Figure 6, '↑' means that the rhythm is longer than the length of the previous rhythm, '↓' means that the rhythm is shorter than the length of the previous rhythm, '→' is the length of the same rhythm It is expressed. Here, it is not necessary for the number of notes to be longer or shorter than the number of notes, and only the direction of change in the length and length of the note is used as data. Alternatively, '↑' may be represented as 'ㄱ', '↓' as 'b' and '→' as 'c', and the present invention is not limited thereto. It is important to understand that all are possible.

In other words, a database of information about the three rhythms that the music searcher remembers is longer, shorter, or equal to the length of the previous note (ie, information about the direction of change in the length of the note). It is to save it.

Furthermore, for a keyboard connected to a PC (i.e., similar to a piano keyboard), a specific button (e.g., the 'Enter' button) is used to define the start and end of rhythm data entry, and music search Enter any button on the keyboard (eg 'a', 'e', 'f', 'h', etc.) to match the rhythm of the music you are remembering. The time difference between the second and third button inputs is compared with the previous button input time difference based on the time difference between them, and when it is shorter than the previous button input time difference, it means that the rhythm is shorter than the length of the previous rhythm. When the length is long, it means that the rhythm is longer than the length of the previous rhythm, and when it is equal to the last time of the previous button input, it may be defined as meaning the length of the same rhythm.

In the case of the rhythm illustrated in FIG. 4, the 15 sound long and short change directions of the 16 rhythms stored by the music searcher are used as search data (that is, the long and short change data of the sound). Here, since the number of changes in the 15 sound stages is '3 ¹⁵ ', it can be regarded as having a very high independence, which is the basis for the search.

In general, it is difficult to recognize the correct sound in the case of the average person who does not have special education, and even though the same sound is different, each sound is slightly different. However, the above-mentioned high or low change in sound or short and long change can be easily recognized without special education. Therefore, in view of the fact that the average person searches for using the direction of change of high and low as the data rather than the height of each note or using the direction of change in the length of sound as the data rather than the length of each note, Not only can the accuracy as a common criterion be increased, but also the accuracy as input data of the music searcher can be increased.

Here, the term 'common standard' means that the standard is made in common in that many people recognize the same change in the low or long change of the sound, while many people recognize the same change differently. In addition, when the actual note is the 'mi' of the quarter note, the probability that the music searcher correctly recognizes and inputs the 'mi' of the quarter note is low, and in the case of consecutive notes, the probability is lower. none. Thus, 'accuracy as input data' means that the data has a much higher accuracy when the negative or low / long changes are used as data.

Then, when the music searcher accesses the music search engine from blogs, homepages, carriers and other sites on the Internet, the music search engine connects to the user authentication center to verify whether the currently connected user is a legitimate user (i.e., After authentication) (S302), a window (i.e., music search window) for performing music search is displayed (S303).

Accordingly, the music searcher inputs information on the direction of change of the melody (i.e., the height of the sound) or the rhythm (i.e., the length and length of the sound) of the music to be searched for in the music search window displayed in step S302.

In the following, when a corresponding button (for example, '↑, ↓, →', or '1, 2, 3', or 'ㄱ, b, c') is simply input from the above-described database definition. It will not be described, only the button input that is changed by using the keyboard connected to the PC.

In the first example, the music searcher inputs data on the direction of change of sound level using a keyboard connected to a PC and transfers the input data to the music search engine.

Looking at the keyboard, it consists of one line from 'q' to ']', one line from 'a' to '' 'below, and the last line from' z 'to' / '. Data can be entered by pressing the button. At this time, the music searcher may select a line and input data by pressing a button as if playing a piano.

That is, when inputting data on the direction of change for the melody (i.e., the pitch of the note) shown in FIG. 4 using one line from 'a' to '' ', the music searcher presses the' fghghhgfggfdffdsd '. Alternatively, you can enter something like 'dghghhgfhhgfggfdf' or 'adhgjjhgjjhfhhgfg'.

In the above three input examples, the input contents are different, but in fact, as the left key of the piano is low and the right key is high, the closer to 'a', the lower and closer to '' '. In this case, all three input examples described above can obtain the same negative high and low change direction data as shown in FIG. 7. 7 is a diagram illustrating input examples of change direction data for the melody illustrated in FIG. 4.

At this time, the music search engine detects the change direction of the keyboard button pressed by the music searcher and confirms the change direction with respect to the sound height.

In other words, when a music searcher who enters data enters a keyboard button as if he is playing the piano for a melody he remembers, the music search engine enters the keyboard position just before it is entered in the order entered through the keyboard. It is determined whether it is the right side, the left side, or the same position and uses this as search data.

In the second example, the music searcher inputs data on the direction of change of sound by using a keyboard connected to a PC and transfers the input data to the music search engine. That is, the input data for the change direction of the rhythm can also be transmitted using the keyboard.

At this time, the music searcher inputs any button of the keyboard in accordance with the rhythm of the stored music. When receiving rhythm data, use special buttons (e.g. 'Enter' button) to enter additional start and end. If the music is input in accordance with the rhythm, it may be as shown in FIG. 8. 8 is a diagram illustrating examples of inputting change direction data for the rhythm shown in FIG. 4.

Based on the time difference between the first input data and the second input data, the input time difference between the second and third input data is compared with the previous input time difference to determine whether the sound is shorter, longer, or the same. In addition, a comparison with the time difference immediately before the last time difference is calculated to determine whether the note is shorter, longer, or the same.

Accordingly, the music search engine checks the data (that is, the change direction data for the melody or the rhythm) input by the music searcher in the above-described input method (S304), and the sound for the melody shown in FIG. A high and low change direction is obtained, or a negative long and short change direction is obtained with respect to the rhythm shown in FIG. 4 (S305).

The music search engine searches for a database that stores music information corresponding to the search data, using the high and low change direction of the sound obtained in the above-described step S305 or the short and long change direction of the sound as search data (S306).

At this time, the music search engine calculates the similarity by comparing the pitch of the music stored in the database with the high and low direction, and displays the list in the order of high similarity with the search data input by the music searcher. S307).

Here, each of the high and low changes in the sound and the short and long changes in the sound may be searched, or both may be combined to adjust the ratio to generate a search result. In other words, the search results may be combined to display the music of the database with the highest similarity as a result.

In addition, the music searcher may pre-set the ratio of the high and low change direction of the sound to the long and short change direction of the sound to generate the final result at the set ratio. For example, a music searcher may set the search result for the high and low change direction of sound to 30 (%) and the search result for the short and long change direction of sound to 70 (%) to produce a final result. Shows the music searchers in order, starting with the music with the highest similarity.

Music search method according to an embodiment of the present invention as described above, it is possible to easily transfer data using a keyboard connected to the PC basically, and to extend such a method to be applied to a mobile phone. At this time, in the process of inputting the high and low change of the sound can be input using the buttons '1' to '9' of the mobile phone instead of the keyboard, and the change in the long and short of the sound can be input as well.

In addition, the music search method according to an embodiment of the present invention as described above may perform a music search using a voice signal input by a music searcher. In this case, a method of receiving a music searcher's hum as a voice signal and comparing it with music in a database is currently proposed. However, this is because the music searcher compares the pitch of each note or the amount of change of the sound with an accurate value. Therefore, many results may be different. On the other hand, the music search method according to the embodiment of the present invention as described above, because the comparative search using the change direction of the sound relatively, can show a higher search accuracy.

In addition, the music search method according to an embodiment of the present invention as described above, can be implemented and used in all the websites for providing a sound source, a portal site for providing a search service, etc., thereby providing a convenience for the service user have. In the current classical genre, since there is no suitable method of searching for music at present, users who like classical music often use a sound source or listen one by one with a recommendation, but the embodiments of the present invention as described above. By applying the music search method according to, it will be easier to search the music of the classic will be able to secure more service users.

In addition, the music search method according to an embodiment of the present invention as described above, since not only the classical genre but also other pieces of melody information can be searched for music, it is possible to increase the revenue by increasing the service usage amount. Can be.

In addition, using the music retrieval method according to the embodiment of the present invention as described above may help to check for plagiarism when the music is released. In the melody and rhythm shown in FIG. 4, a total of 17 sound to 16 sound change direction data can be obtained, and the number of '3 ¹⁶ ' cases occurs for the 17 sound. This confirms that it is extremely low probability to have the same direction of change in different music. Therefore, if music with a high degree of similarity is searched for a certain change direction, it may be suspected of plagiarism and it may be helpful in determining plagiarism in a much faster time than present.

As described above, an embodiment of the present invention is based on a melody change (ie, change in tone) of the music that the music searcher is looking for, a rhythm change of the music (ie, change in short and long periods of music), or a melody of music. The music is searched based on changes and rhythm changes, and the direction-based music of the melody or rhythm to select, combine, or combine the search results and list the music results in the order of highest similarity. The search method was described.

However, the embodiment of the present invention is not implemented only through the above-described method, but may be implemented through a program for realizing a function corresponding to the configuration of the embodiment of the present invention, a recording medium on which the program is recorded, and the like. Such an implementation can be easily implemented by those skilled in the art to which the present invention pertains based on the description of the above-described embodiments.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

1 is a flowchart illustrating a music search method according to the prior art.

2 is a diagram illustrating an example of a website that provides a music search according to the prior art.

3 is a flowchart illustrating a music search method according to an embodiment of the present invention.

FIG. 4 is a diagram illustrating an example of melody and rhythm in FIG. 3.

5 is an exemplary diagram illustrating a direction of pitch change relative to the melody of FIG. 4.

FIG. 6 is an exemplary diagram illustrating a direction of change in sound length relative to the rhythm of FIG. 4.

7 is a diagram illustrating input examples of change direction data for the melody of FIG. 4.

8 is a diagram illustrating input examples of change direction data for the rhythm of FIG. 4.

Claims (5)

In the music search method, Storing a database of information on the height of the sound or the length and length of the sound for each of the music, and storing the music information database based on the height of the sound or the length and length of the sound in advance; When the user accesses the music search engine, authenticating whether the connected user is a legitimate user, and then displaying a music search window; Obtaining a high or low change direction of the sound or a short and long change direction of the sound from data input through the music search window; Retrieving music from the music information database corresponding to the obtained high and low change direction or the short and long change direction of the sound; And Comparing the similarity compared to the high and low change direction or the long and short change direction of the sound for the retrieved music, list and display in order of high similarity Music search method comprising a. The method of claim 1, The music information database, For each of the pieces of music, you can store the high and low change direction of the note as to whether the note is higher, lower, or equal to the previous note, or change the length of the note as to whether the note is longer, shorter, or equal to the previous note. Music search method characterized in that the direction is stored as data. The method of claim 1, The music information database, In the case of the keyboard, when you press a button that is far away from a specific button, it means that the note is higher than the previous note. When you press a button that is near, it means that the note is lower than the previous note, and when you press the same button, A music retrieval method characterized in that it is defined as meaning the pitch. The method of claim 1, The music information database, In the case of the keyboard, a specific button is defined to indicate the start and end of the input.When the keyboard is shorter than the previous button input time difference based on the time difference between the first button input and the second button input, the note length is shorter than the previous note. The method of claim 1, wherein the length of the sound is longer than that of the previous sound, and when the sound is the same, the sound is defined to mean the same sound. The method of claim 1, The displaying step, The final results are generated in a ratio of a preset high and low change direction of the music to a short and long change direction of the searched music, and the similarity is compared with the high and low change direction and the long and short change direction of the sound for the final result. A music retrieval method, characterized in that it is calculated and listed in order of high similarity.

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