JP2006293896A - Musical piece retrieving device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To resolve problems in a conventional technique wherein the numbers of times of operation and displays become large in a musical piece retrieving device carrying out narrowing down retrieval by specifying several specific values of musical piece information from a musical piece group having a plurality of pieces of musical piece information. <P>SOLUTION: In the musical piece retrieving device, after carrying out narrowing down retrieval by specifying the type and its specific value of first musical piece information, only appropriate specific values are automatically extracted and displayed from specific values of pieces of musical piece information other than the initially specified musical piece information with respect to a retrieval result, to be selected by a user. By this, narrowing down retrieval can be provided with a small number of times of operation, and a suppressed appropriate number of displays of category lists after first condition retrieval. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a music search apparatus, and more specifically, a music search apparatus and a music search method for searching for music that a user wants to listen to by specifying one or more pieces of music information related to the music. And a music search program.

  In recent years, storage capacity such as HDDs has made it possible to store a large amount of content such as music. With the advent of HDD portable music players and HDD car navigation systems, etc. You can listen to a lot of music without having to carry it.

  Further, music information (singer name, album name, music title, genre, age, etc.) can be acquired from a music information database such as CDDB, and music can be searched from various conditions.

  Since a large amount of music can be stored, search technology for easily searching for music that one wants to listen to from a large number of music has become important. In particular, operation in a car is required from the viewpoint of safety, and a technique for efficiently searching for a song to be listened to is desired.

  The following is a conventional example of a music narrowing search technique based on a plurality of search conditions.

(Conventional example 1)
There is a method of selecting a piece of music that the user wants to listen to by first specifying the type of the piece of music information and then specifying a specific value of the piece of music information to perform a narrowing search of the pieces of music and repeating this operation.

(Conventional example 2)
After performing a refinement search by specifying the type of the first music information and its specific value, the type of the second music information is not selected, but other than the music information specified for the first in the search result. There is a method of displaying a list of specific values in music information (Patent Document 1).
JP 7-319905 A JP 2004-86189 A

  However, since the conventional example 1 requires two operations of “specifying the type of music information” and “specifying the specific value of the selected music information” in order to narrow down by one condition, There was a drawback that the number of times would increase.

  Further, in the above-described conventional example 2, after performing a narrowing search based on the first search condition, all the specific values of the music information that can be searched for the second are displayed, so that the list of categories to be displayed increases. There was a drawback.

  For the reasons described above, in-vehicle music search devices such as HDD car navigation systems have a variety of information as music information, but cannot perform a refined search combining these conditions for safety reasons.

  Therefore, the present invention has been made in view of the above-described problems. In the music search device, after performing a narrow search by specifying the type of the first music information and its specific value, the search result is processed. Only the appropriate values in the music information other than the music information specified first are automatically extracted and displayed, allowing the user to select the number of operations, and the classification after the first condition search The purpose is to realize a narrow search with the list display limited to an appropriate number.

  In order to achieve the above object, the music search device according to the present invention specifies a specific value of some music information from a music group having a plurality of music information for each music, thereby narrowing down music search. A search condition specifying unit that specifies the type and specific value of the first piece of music information, a music search unit that searches for music according to the search condition specified by the search condition specifying unit, The distribution of specific values in each piece of music information other than the first designated piece of music information is checked for the search results, and only the specific values in each piece of music information are divided into a plurality of categories (the distribution of specific values in each piece of music information is A category extraction unit that automatically extracts (only non-biased), a classification result display unit that displays the extracted category list, and a category combination that specifies one of the categories from the displayed category list A specifying unit, a song search apparatus and a search result display unit for displaying a further narrowed song list in the specified classified by the classification result designation unit.

  As is clear from the above description, according to the music search apparatus according to the present invention, after performing a narrow search by specifying the type of the first music information and its specific value, the first is specified for the search result. By automatically extracting and displaying only appropriate values from the specific values in the music information other than the selected music information, the number of operations is reduced, and the classification list display after the first condition search is appropriate. Search refinement with a limited number is possible. As described above, it is possible to realize a narrowed music selection combining a plurality of search conditions with a small number of operations and a small display, so that it is possible to perform a narrowed music search in a car easily and safely.

  Hereinafter, the music search device according to the present invention will be described in detail with reference to the drawings. Examples of the music search system according to the embodiment of the present invention include an audio device, a home server, a car navigation system with an audio function, a portable music player, and a mobile terminal that can store and reproduce a large amount of music data. A music search system having a music search function such as a PC music playback application.

(Embodiment 1)
Hereinafter, the music search apparatus according to Embodiment 1 will be described. The music search apparatus according to Embodiment 1 performs a music search search by designating specific values of some music information from among a music group having a plurality of music information for each music. This is a music search device for the purpose of creating a playlist composed of a plurality of songs.

  FIG. 1 is a block diagram showing the configuration of the music search apparatus according to the first embodiment.

  In FIG. 1, the music search device includes a music data storage unit 101, a search condition specifying unit 104, a music search unit 107, a classification extracting unit 108, a classification result display unit 109, a classification result specifying unit 110, and a search. And a result display unit 111. The music data storage unit 101 includes a music database 102 and a music information database 103, and the search condition specifying unit 104 includes a music information specifying unit 105 and a specific value specifying unit 106.

  First, the outline of the configuration of FIG. 1 will be described. The music data storage unit 101 stores music data and music information data. The search condition specifying unit 104 allows the user to specify the first search condition. The music search unit 107 searches the music stored in the music data storage unit 101 for music that matches the search condition specified by the search condition specifying unit 104. The category extraction unit 108 automatically selects only appropriate ones of specific values (classifications) in the music information other than the music information specified by the search condition specifying unit 104 for the music narrowed down by the music search unit 107. To extract. The classification result display unit 109 displays the classification list extracted by the classification extraction unit 108. The classification result designation unit 110 allows the user to designate one of the classification lists displayed on the classification result display unit 109. The search result display unit 111 displays a music list corresponding to the classification designated by the classification result designation unit 110.

  Details of each part will be described below.

  The music data storage unit 101 stores a plurality of music data and music information in association with each other.

  The music database 102 stores music signals for a plurality of music. For these music signals, data of a desired music signal is called by a music ID (for example, a music title, music number, etc.) for identifying the music. These music signals are stored, for example, as waveform data by linear PCM or compressed data such as MP3 and AAC.

  The music information database 103 stores information related to music such as a singer name, album name, song name, genre, release year, impression value, hit information, etc. in association with the music ID of each music in the music database 102.

  In the first embodiment, the music data storage unit 101 is composed of two databases, a music database 102 and a music information database 103. Here, the music data storage unit 101 only needs to store a plurality of music data and music information in association with each other, and may be configured as one database.

  The music condition specifying unit 104 allows the user to specify the first search condition. In the first embodiment, the music condition specifying unit 104 includes a music information specifying unit 105 and a specific value specifying unit 106.

  The music information specifying unit 105 displays a list of types of music information that is a search condition such as “singer name” and allows the user to specify one of them using an input device such as a touch panel or a remote control.

  The specific value specifying unit 106 displays a list of all the specific values of the types of music information specified by the music information specifying unit 105 and presents them in the music information database 103 and allows the user to specify them. For example, if “musical age” is designated by the music information designation unit 105, “1960s”, “1970s”, “1980s”, “1990s”, “2000s”, etc., exist in the music information database 103. A specific value of “age” is displayed in a list, and the user designates one of them using an input device such as a touch panel or a remote control.

  The music search unit 107 searches the music information database 103 for music that matches the search conditions specified by the search condition specification unit 104, stores the music ID, and the like. Hold.

  The classification extraction unit 108 checks the distribution of specific values in each piece of music information other than the piece of music information specified by the search information specifying unit 105 for the music narrowed down by the music search unit 107, and the distribution of specific values in each piece of music information is biased. Automatically extract only those that are not.

  Hereinafter, the classification extracting unit 108 will be described in detail by taking “age”, which is one piece of music information, as an example. In the first embodiment, the year of release for each piece of music stored in advance in the music database 102 is registered in the music information database 103 as one piece of music information. Now, for the music group narrowed down by the music search unit 107, three distributions of age are shown (FIG. 2). In FIG. 2A, the age of the music group is biased only to “1990s”. In this case, since there is no narrowing effect in the age, no classification for the age is extracted. In FIG. 2B, there are many songs of “1990s”, and there are only a few songs for “1980s” and “2000s”. The first embodiment is intended to create a playlist composed of a plurality of songs. In this case, it is classified into a plurality of categories such as “1980s”, “1990s”, and “2000s”. “2000s” is not effective because the number of songs becomes too small. Also, the “1990s” is not effective because there is almost no narrowing effect. As described above, when the music distribution corresponding to the specific value is biased with respect to the music information, the classification for the music information is not extracted. However, if the music search device has a different purpose and is a music search device for searching for a specific piece of music, it is better to extract all items that are classified into a plurality of categories regardless of the distribution bias. In some cases. In FIG. 2C, music is distributed in each of the “1980s”, “1990s”, and “2000s” and there is no bias, so these classifications are extracted.

  Hereinafter, the classification extraction unit 108 will be described in detail by taking “impression” which is one piece of music information as an example. Here, the impression search of a song is to perform a song search by an impression word by setting an impression value representing the impression of the song in advance and associating the impression value with a phrase (impression word) representing the impression of the song. (Patent Document 2).

  In the first embodiment, the impression value of a music is expressed by two impression values of an active factor and an emotion factor, and an impression word is associated with a certain range in a two-dimensional space (FIG. 3). ). Also, an impression value is calculated for each piece of music stored in the music database 102 in advance, and an impression value (or a corresponding impression word) is registered in the music information database 103 as one piece of music information. . Now, a diagram is shown in which the music group narrowed down by the music search unit 107 is mapped onto a two-dimensional impression space (FIG. 4). In FIG. 4A, the impression value of the music group exists only in the range of “pop type”, “exciting type” has one song, and “healing type” has no corresponding song. There is only one song for the “Ukiuki-kei” song, and it is not an effective classification for the purpose of creating a playlist consisting of a plurality of songs, so it is not extracted. However, since “pop” is narrowed down to an appropriate number for the entire song, it is preferable to extract “pop”. In FIG. 4B, music is distributed in each of “exciting system”, “pop system”, and “healing system”, and there is no bias, so these classifications are extracted.

  Specific methods for mechanically examining whether to leave or remove a classification according to the category distribution include the following.

  A variance value is obtained for each piece of music information, and a specific value (classification) of music information having a high variance value is extracted.

  The number of specific values of each piece of music information is obtained, and only specific values within a certain range are extracted.

  The number of specific values of each piece of music information is obtained, and only those whose ratio of the number of specific values to the total number of specific values is within a certain range are extracted.

  Note that the extraction method of the classification extraction unit 108 may be changed according to the type of music information such as “age” and “impression”.

  The classification result display unit 109 displays a list of music categories selected by the classification extraction unit 108. In the first embodiment, as shown in FIG. 5, it is preferable to display the classification of music to be displayed collectively for each type of music information to which the classification belongs. The display order is preferably determined in advance for the type of the first piece of music information specified by the music information specifying unit 105. FIG. 6 shows an example of the classification display order in the classification result display unit 109 when “singer name” is designated by the music information designation unit 105. Note that the order in which the classifications are displayed is not limited to these.

  The classification result designation unit 110 causes the user to designate one of the music classifications displayed by the classification result display unit 109 using an input device such as a touch panel or a remote controller.

  The search result display unit 111 displays a music list corresponding to the classification designated by the classification result designation unit 110.

  The process flow of the music search system according to the first embodiment will be described below. FIG. 7 is a flowchart showing a process flow of the music search apparatus according to the first embodiment.

  First, the search information specifying unit 105 displays a list of types of music information that is the first search condition, and allows the user to specify one of them (step S201). Next, the specific value designating unit 106 displays a list of all the specific values of the type of music information specified in step S201 and exists in the music information database 103, and allows the user to specify one of them (step S202). Then, the music search unit 107 searches the music information database 103 for music that matches the search conditions specified in step S201 and step S202, and holds the search result (step). S203). Further, the classification extraction unit 108 checks the distribution of specific values in each piece of music information other than the type of music information specified in step S201 for the music narrowed down in step S203, and the distribution of specific values in each piece of music information is biased. Only those that are not are automatically extracted (step S204). Then, the classification result display unit 109 displays a list of the music categories extracted in step S204 (step S205). Furthermore, the classification result specifying unit 110 allows the user to specify one of the music classifications displayed in step S205 (step S206). Finally, the search result display unit 111 displays a music list corresponding to the classification specified in step S206 (S207). Thereafter, the music list displayed in step 207 is reproduced as a playlist.

  As described above, according to the first embodiment, it is possible to perform a narrowed-down music selection combining a plurality of search conditions with a small number of operations and a small number of displays. It becomes.

  As described above, the music search device according to the present invention performs the narrowing search by specifying the type and the specific value of the first music information in the music search device, and then specifies the first for the search result. Only appropriate values from the specific values in the music information other than the music information are automatically extracted and displayed, and by allowing the user to select, the number of operations is small, and the classification list display after the first condition search is appropriate. The search can be narrowed down to a limited number. The music search system according to the present invention is effective for narrowing down music by searching in an audio device, a car navigation system with an audio function, a portable music player, a music playback application for PC, and the like. Among them, it is particularly effective in a car navigation system with an audio function such as an HDD car navigation system used in a vehicle that requires safety of operation.

1 is a block diagram showing a part of the configuration of a music search device according to Embodiment 1 of the present invention. Figure showing an example of classification extraction by age The figure which shows the correspondence example of impression word and impression value The figure which shows the example of classification extraction by impression Figure showing a display example of the classification list display The figure which shows the example of the classification list display order when the singer name is designated as the first condition The flowchart which shows the flow of a process of the music search system which concerns on Embodiment 1 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 101 Music data storage part 102 Music database 103 Music information database 104 Search condition designation part 105 Music information designation part 106 Concrete value designation part 107 Music search part 108 Classification extraction part 109 Classification result display part 110 Classification result designation part 111 Search result display part

Claims (13)

A music search device that performs a search search for music by designating specific values of some music information from a music group having a plurality of music information for each music,
A search condition designating unit for designating the type of music information and its specific value,
A music search unit for searching for music according to the search conditions specified in the search condition specifying unit;
For the music searched by the music search unit, the distribution of the specific value in each piece of music information other than the first specified music information is examined, and only those in which the distribution of the specific value in each piece of music information is not biased are automatically extracted. A classification extraction unit,
A classification result display section for displaying the extracted classification list;
A classification result designating unit for designating one of the classifications from the displayed classification list;
A music search apparatus comprising: a search result display unit that displays a music list further narrowed down by the classification specified by the classification result specifying unit. A music search device that performs a search search for music by designating specific values of some music information from a music group having a plurality of music information for each music,
A search condition designating unit for designating the type of music information and its specific value,
A music search unit for searching for music according to the search conditions specified in the search condition specifying unit;
For the music searched by the music search unit, the distribution of specific values in each piece of music information other than the music information specified first is checked, and only the specific values in each piece of music information are divided into a plurality of categories (classifications). A classification extraction unit that automatically extracts
A classification result display section for displaying the extracted classification list;
A classification result designating unit for designating one of the classifications from the displayed classification list;
A music search apparatus comprising: a search result display unit that displays a music list further narrowed down by the classification specified by the classification result specifying unit. The classification extraction unit calculates a dispersion value of specific values in each piece of music information other than the music information designated first for the music searched by the music search unit, and only the specific value of the search information having a high dispersion value is calculated. 2. The music search apparatus according to claim 1, wherein by extracting, only those in which the distribution of specific values in each music information is not biased are automatically extracted. The classification extraction unit examines specific values in each piece of music information other than the first designated piece of music information for the music searched by the music search unit, and does not select a specific value with poor narrowing efficiency. The music search device according to any one of claims 1 to 3. The classification extraction unit examines specific values in each piece of music information other than the first specified music information for the music searched by the music search unit, and extracts only specific values in which a certain number or more of music exists. The music search device according to claim 1, wherein: The music search apparatus according to claim 1, wherein the classification extraction method is changed according to the type of music information. The music search device according to any one of claims 1 to 6, wherein the classification result display unit displays a list of the same music information types connected together. The music according to claim 7, wherein the classification result display unit determines a priority order among classification groups belonging to the same music information to be displayed according to a type of search condition specified by the search condition specifying unit. Search device. The music search apparatus according to claim 7, wherein the classification result display unit determines a priority order between classification groups belonging to the same music information to be displayed according to a user's usage history. The music search apparatus according to claim 7, wherein the classification result display unit displays a classification group having a large number of classifications belonging to the same music information behind. The music search apparatus according to any one of claims 1 to 6, wherein the classification result display unit determines a priority of classification to be displayed according to a user's usage history. A content search device that performs a content refinement search by designating specific values of some content information from a content group having a plurality of content information for each content,
A search condition designating unit for designating the type and the specific value of the first content information;
A content search unit for searching for content according to a search condition specified by the search condition specifying unit;
For the content searched by the content search unit, the distribution of specific values in each piece of content information other than the first specified content information is examined, and only those in which the distribution of specific values in each piece of content information is not biased are automatically extracted. A classification extraction unit,
A classification result display section for displaying the extracted classification list;
A classification result designating unit for designating one of the classifications from the displayed classification list;
A content search device comprising: a search result display unit that displays a content list further narrowed down by the classification specified by the classification result specifying unit. A content search device that performs a content refinement search by designating specific values of some content information from a content group having a plurality of content information for each content,
A search condition designating unit for designating the type and the specific value of the first content information;
A content search unit for searching for content according to a search condition specified by the search condition specifying unit;
For the content searched by the content search unit, the distribution of specific values in each content information other than the first specified content information is examined, and only the specific values in each content information are divided into a plurality of categories (classifications). A classification extraction unit that automatically extracts
A classification result display section for displaying the extracted classification list;
A classification result designating unit for designating one of the classifications from the displayed classification list;
A content search apparatus comprising: a search result display unit that displays a content list further narrowed down by the classification specified by the classification result specifying unit.

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