JP2001052004A - Method and device for music data retrieval - Google Patents

Abstract

PROBLEM TO BE SOLVED: To retrieve music on the basis of data other than text data. SOLUTION: A music index generation part 11 reproduces a recording medium 10 like a CD, where music data is recorded, to encode the musical interval and the strength of reproduced music data as a numerical value of a specific bit width. A music index is generated by operation relating music data to text data like a composer name or the like on the basis of music data encoded to the numerical value. Data of the music index is recorded in a recording medium 12 like an HD or an optical disk and is supplied to a music retrieval part 15 through this recording medium. A music retrieval formula generation part 14 encodes the musical interval and the strength of sounds generated by user's humming or the like to obtain numerical data. Sound data encoded to numerical data is connected to separately inputted text data with a logical operator like AND or OR to generate a retrieval formula, and a music retrieval part 15 retrieves a music adapted to the retrieval formula from the music index.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a music data search apparatus and a music search method for searching for a desired music piece.

[0002]

2. Description of the Related Art In recent years, music that can be listened to by a general user through a service for distributing music data via a CD (Compact Disk) or a specific channel in a telephone line or satellite digital broadcasting has become increasingly popular in recent years. Is becoming For this reason, when a user wants to purchase a new piece of music that he / she has heard through a program such as a television or a radio, the demand for a search for quickly knowing a CD or the like in which the music is recorded has increased. I have.

[0003] Recently, there are many cases in which a large number of music pieces that can not be memorized by the user themselves are held on many or various recording media. In such a case, there is an increasing demand for a search for quickly knowing on which recording medium the music the user wants to listen to at that time is present.

[0004]

However, conventionally, only retrieval based on text data such as song names, artist names such as composer names and songwriter names, or lyrics, etc., could be performed. For this reason, it has not been possible to perform a search based on, for example, fragmentary knowledge of a melody.

[0005] Further, unless text data such as a song name is input correctly, a desired song cannot be searched. For this reason, there is a possibility that the search cannot be performed due to a difference in the memory of the user or the like.

Accordingly, it is an object of the present invention to provide music data which can be searched based on data other than text data, and which can be searched even when the data on which the search is based contains ambiguity. A search device and a search method are provided.

[0007]

According to a first aspect of the present invention, in a music data search apparatus, an index for generating, for a plurality of music pieces, index data in which music data and text data related to the music data are associated with each other. A data generation unit, a search condition generation unit that generates a search condition based on input voice data,
A music data search apparatus comprising: a search unit that selects a music piece with reference to the index data and displays the selected music piece.

According to an eleventh aspect of the present invention, in the music data search method, an index data generating step of generating, for a plurality of music, index data in which music data and text data related to the music data are associated, A search condition generating step of generating a search condition based on the audio data to be performed, and a search step of selecting a song by referring to the index data based on the search condition and displaying the selected song. This is a featured music data search method.

According to the invention described above, it is possible to search for music based on voice data input by a method such as humming a user or the like.

[0010]

FIG. 1 shows an example of the configuration of an embodiment of the present invention. The music index creating unit 11 reproduces the recording medium 10 on which music data such as a CD is recorded, and encodes the pitch and strength of the reproduced music data as a numerical value of a specific bit width. In the encoding process, the pitch information can be divided into several levels by selecting the user or the like between one sound. In addition, the strength information can be divided into a plurality of stages according to selection by a user or the like. A music index is created by linking music data quantified by such encoding processing with text data such as a composer name, a poet name, a performer name, and the like. The created music index data is recorded on a recording medium 12 such as an HD (hard disk) or an optical disk such as a CD, and is supplied to the music search unit 15 via these recording media.

[0011] The music retrieval formula creation unit 14 receives, as input, speech generated by a user or the like by humming or the like, writes a written score, etc., encodes a pitch and dynamics in these inputs, and encodes specific bits. The numerical value of the width is used. That is, as shown in FIG. 2, the encoding process is performed with the pitch information and the strength information as a pair of information.
In the encoding process, the pitch information can be divided into several levels by selecting the user or the like between one sound. Further, the strength information can be divided into a plurality of stages according to selection by a user or the like. By connecting these pieces of music data with logical operators such as AND and OR, a search formula can be created.

As will be described later, text data such as a song title and a player name may be added to the search formula. Also,
The user or the like may specify the degree of ambiguity so that similar music pieces can be searched within a certain range. The music search unit 15 analyzes the search formula supplied from the music search formula creation unit 14 and searches the music index data supplied from the recording medium 12 for songs that match the search conditions. The search result is supplied to the music search formula creation unit 14. The music search formula creator 14 displays the search results.

The music index creating section 11 will be described in more detail with reference to FIG. The music index creation unit 11 includes a sound source 20, a CPU (microcomputer) 22, a sound card and driver unit 23, a keyboard 24, a memory 25, and a disk drive 26. These components are connected by a bus 27. The sound source unit 20 reproduces music data from the recording medium 10 that stores music data. As the recording medium 10, a tape or the like on which music data such as a CD, LP record, or magnetic tape is recorded can be used. The music data reproduced by the sound source unit 20 is supplied to the sound card and the driver unit 23. Sound card and driver unit 23, CPU 22, memory 2
By the processing of 5 or the like, the pitch and the strength of the sound are encoded at a specific sampling rate to obtain a numerical value of a specific bit width.

Here, the user can set the sampling rate, the number of levels of the pitch, and the number of levels of the sound. Also, for example, when inputting music data, text information such as a composer name, a poet name, a performer name, and a date when the music data is registered in a music index can be input. Input of these settings and text information, along with commands related to operations, etc.,
This is done via the keyboard 24. The operation of the CPU 22, the memory 25, and the like creates a music index (see FIG. 4) in which the digitized music data and text data such as the composer name are linked. The data of the created music index is supplied to the recording medium 12 and recorded.

Next, FIG.
This will be described with reference to FIG. The music search formula creator 14 generates the sound source 3
0, a CPU (microcomputer) 32, a sound card and driver unit 33, a keyboard 34, and a memory 35. These components are connected by a bus 36. The sound source 30 includes a microphone or the like, and converts a sound generated by a user or the like by, for example, humming into an electric signal,
This signal is supplied to the sound card and the driver unit 23. The sound may be generated by a method other than humming, such as playing a musical instrument or reproducing from a recording medium. Further, for example, a sound obtained through a television broadcast, a radio broadcast, a telephone line, or the like may be supplied to the sound source 30.

Further, it is possible to input information on the pitch and the strength of the sound via the keyboard 34.
Data relating to sound, which is input from the sound source 30 and the keyboard 34, etc.,
3, encoded by processing by the CPU 32, the memory 35, and the like. That is, at a specific sampling rate, the pitch and strength of the input music data are set to numerical data having a specific bit width. Here, the sampling rate, the number of pitch steps, and the number of sound levels in the encoding process can be changed according to the settings made by the user or the like.

On the other hand, a composer,
Text data of a writer, a performer, etc. can be input. The musical score data can be input as text data via the keyboard 34 by, for example, using a predetermined input software. A search formula is generated based on the numerical data and text data generated as described above. For example, a search formula is generated by connecting each data information with a logical operator such as AND or OR.

The format of a logical expression used as a search expression can also be input from the keyboard 34 or the like. It is also possible to specify the degree of ambiguity. The degree of ambiguity can be set as a tolerance for pitch, strength of sound, fluctuation of notation of text data, and the like. As a result, a search can be performed even if there is a slight error in the notation of the text data due to a slight deviation such as a pitch or a sound intensity, a memory error, or the like. The specification of the degree of ambiguity can be performed via the keyboard 34 together with commands related to operations and the like.

Next, the music search section 15 will be described in more detail with reference to FIG. The music search formula creator 15
It has a CPU (microcomputer) 42, a sound card and driver unit 43, a keyboard 44, and a memory 45.
These components are connected by a bus 46. Also,
The music search unit 15 is supplied with data from the recording medium 12 and the music search formula creation unit 14.
Then, the music index data is read from the recording medium 12, and the read data is subjected to full-text search to completely match the search conditions indicated by the search formula supplied from the music search formula creation unit 14, and to a certain degree or more. Extract the music data to be played. The search process is performed by the CPU 42,
This is performed by the sound card, the driver unit 43, the memory 45, and the like.

At this time, the range in which music data that does not completely match is taken out is determined by the degree of ambiguity set by the music search formula creation unit 14 as described above. Note that the degree of ambiguity may be set via the keyboard 44 together with a command related to an operation or the like at the time of performing a search. In this case, it is possible to perform the search while appropriately setting the ambiguity according to the search result.

A search result is obtained by a predetermined monitor (not shown) in the form of a list or the like in the order of date when the music data is added to the music index or in the order of ranking indicating the degree of conformity to the search condition. Will be displayed. The ranking is set highest for the completely matched music data, and is set lower as the matching degree decreases.

In the embodiment of the present invention described above, music index data is recorded on an optical disk, HD, or the like, and music index data is supplied to the music search unit via these recording media. For example, a nonvolatile memory using a semiconductor memory may be used.

Further, in the embodiment of the present invention, a configuration for reproducing a CD, an LP record, a magnetic tape, or the like is used as a sound source when generating music index data. , MD (Mini Disk), DVD
Music data reproduced from a disk-shaped recording medium such as a (Digital Versatile Disk) may be used as a sound source.

Further, in one embodiment of the present invention, setting of a sampling rate when generating music index data, the number of levels of musical intervals and the number of levels of dynamics, input of text data of a composer or the like, Set the sampling rate when creating a music search formula, the number of levels of pitch steps and the number of dynamic levels, enter information on pitch and dynamics, specify ambiguity, and ambiguous when performing music searches The setting of the degree and the like are performed via the keyboard together with processing such as input of commands related to various operations. On the other hand, these data input, setting, and the like may be performed by another method. For example, a remote operation unit that performs an input operation using infrared rays or the like may be used. In particular, it is effective to input text data and musical scores using an optical reading device such as an image scanner.

The present invention is not limited to the above-described embodiment of the present invention, and various modifications and applications are possible without departing from the gist of the present invention.

[0026]

According to the present invention, by inputting voice data such as fragmentary melodies, musical scores, text data, etc., it is possible to search for a suitable song from existing music.

In particular, by performing a search for voice data, text data, and the like in consideration of ambiguity assumed in advance, a desired musical piece can be generated due to inaccurate input of voice data, text data, and the like. It is possible to avoid being unable to search or to improve the degree thereof.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an example of the overall configuration of an embodiment of the present invention.

FIG. 2 is a schematic diagram illustrating sampling in encoding processing.

FIG. 3 is a block diagram illustrating an example of a partial configuration of an embodiment of the present invention.

FIG. 4 is a schematic diagram for explaining a music index.

FIG. 5 is a block diagram showing an example of another configuration of another embodiment of the present invention.

FIG. 6 is a block diagram showing an example of still another configuration of one embodiment of the present invention.

[Explanation of symbols]

11: music index creation unit, 14: music search formula creation unit, 15: music search unit

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (reference) G10L 3/00 531N

Claims (11)

[Claims] 1. A music data search device, comprising: index data generating means for generating, for a plurality of music, index data in which music data and text data related to the music data are associated with each other; Music data comprising: search condition generating means for generating a search condition based on the search condition; and search means for selecting a music piece with reference to the index data based on the search condition and displaying the selected music piece. Search device. 2. The method according to claim 1, wherein the index data generation unit includes a unit that inputs the music data, a unit that inputs the text data, and a process that associates the music data with the first text data. Means for forming the index data by performing the following. 3. The music composition according to claim 1, wherein said search condition generation means has means for inputting said audio data, and means for performing a process of determining a search condition based on said music data. Data retrieval device. 4. The search means according to claim 1, wherein said search means completely matches said search condition among said index data and a predetermined range of ambiguity with respect to said search condition. A music data search device for selecting a music data that is determined to be compatible with the music data. 5. The music data search device according to claim 4, wherein the search condition generation means determines the degree of ambiguity. 6. The music data search device according to claim 5, wherein the search condition generation means determines the degree of ambiguity based on an input by a user. 7. The music data search device according to claim 4, wherein the search means determines the degree of ambiguity. 8. The music data search device according to claim 7, wherein the search means determines the degree of ambiguity based on an input by a user. 9. The music data search device according to claim 4, wherein a result of the search by the search means is displayed in an order related to the degree of matching with the search condition. 10. The music data search device according to claim 1, wherein a search result by the search means is displayed in an order related to a date and time when the searched music is registered in the index data. 11. A music data search method, comprising: an index data generating step of generating, for a plurality of music, index data in which music data and text data related to the music data are associated with each other; Music data, comprising: a search condition generating step of generating a search condition based on the search condition; and a search step of selecting a music by referring to the index data based on the search condition and displaying the selected music. retrieval method.