JP2008052786A - Recording and reproducing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a recording and reproducing device reproducing music contents in consideration of continuity of code information of music and tempo of music when a plurality of music are continuously reproduced. <P>SOLUTION: The recording and reproducing device is provided with: a music data obtaining means for obtaining music data from a recording medium; a data recording means for storing the music data; a reproducing means for reading out the music data from the data recording means and reproducing it; a code information detecting means for detecting the code information of music reproduced by the reproducing means; and a music selecting means for selecting music reproduced next from the data recording means based on a detected result of the code information detecting means. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a recording / reproducing apparatus that realizes medley reproduction of user-original content by continuously reproducing the content.

In recent years, in order to continuously reproduce a plurality of music contents, it is known that the music contents are connected and reproduced without a sense of incongruity using fade-out, fade-in, cross-fade, or the like (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 9-230880

However, when playing multiple music contents, continuous playback is performed using the joining method, crossfade method, bridge method, etc., but the end and start intervals of the two songs, that is, the current playback If the chord information (key) is different between the end section of the music being played (the end of the song) and the start section (the beginning of the song) to be played to the next song, the connection method, cross-fade method, bridge method, etc. are used. Even in this case, there is no continuity of the code information, and there is a fear that the code information is reproduced with a sense of incongruity.
Further, since the tempo of the music to be played back is not taken into account, for example, there is a possibility that an up-tempo music that is not connected after the slow tempo music will be played continuously.

  Therefore, the present invention provides a recording / reproducing apparatus capable of reproducing music contents in consideration of music code information and music tempo continuity when a plurality of music pieces are continuously reproduced.

  The recording / reproducing apparatus of the present invention includes a music data acquiring unit that acquires music data from a recording medium, a data recording unit that stores the music data, a reproducing unit that reads and reproduces music data from the data recording unit, Chord information detecting means for detecting chord information of music data being reproduced by the reproducing means; and music selecting means for selecting music data to be reproduced for the next song from the data recording means based on the detection result of the chord information detecting means; It has the structure provided with.

  The recording / reproducing apparatus of the present invention thus configured stores music data from a recording medium in the data recording means using the music data acquisition means, and reproduces the music data saved in the data recording means by the reproducing means. Since the chord information detecting means is used to detect chord information and the music to be played is selected from the detected chord information, the music to be played is selected and played. It is possible to automatically select and play music having code information similar to the music being played even after the music is finished.

  The recording / reproducing apparatus of the present invention includes a music data obtaining unit for obtaining music data from a recording medium, a data recording unit for storing the music data, and a reproducing unit for reading out and reproducing the music data from the data recording unit. The music information detecting means for detecting the chord information and tempo information of the music being played back by the playing means, and the music to be played back to the next song based on the detection result of the music information detecting means are selected from the data recording means. And a music selection means.

  The recording / reproducing apparatus configured as described above captures music data from a recording medium, records the music data in the data recording means, reproduces the music data recorded in the data recording means using the reproducing means, and reproduces the music data. The chord information and tempo information of the music being played are detected by the music information detection means, and the music data (music) to be played next is selected from the data recording means based on the detection result, so that the music currently being played ends. After that, music having code information and tempo information similar to the currently played music can be automatically selected and played.

  The recording / reproducing apparatus of the present invention includes a music data information acquisition unit that simultaneously acquires music data and code information of the music data from a recording medium, and the music data and code information acquired by the music data information acquisition unit. An information recording means for storing; a reproducing means for reading out and reproducing music data from the information recording means; and a music selecting means for selecting the next song from the chord information of the music data being reproduced by the reproducing means. It is configured.

  The recording / reproducing apparatus configured as described above simultaneously obtains music data and code information of the music data from the recording medium by using the music data information obtaining unit, records the information on the information recording unit, and reproduces it using the reproducing unit. Since the music to be played after the music being played ends is automatically selected using the music selection means, music similar to the code information of the currently played music can be automatically selected. .

The recording / reproducing apparatus of the present invention includes music data, music data information acquisition means for acquiring music data code information and tempo information from a recording medium, and the music data and code acquired by the music data information acquisition means. Information recording means for storing information and the tempo information;
Reproducing means for reading out and reproducing music data from the information recording means, and music selection means for selecting the next song from the chord information and tempo information of the music data being reproduced by the reproducing means. .

  The recording / reproducing apparatus configured as described above acquires music data from the recording medium, code information of the music data, and tempo information by the music data information acquiring unit, records the information in the information recording unit, and uses the reproducing unit. The music selection means can automatically select the music to be played to the next song from the chord information and tempo information of the music being played, so even if the currently playing music ends The music can be reproduced by selecting music data having code information and tempo information similar to the currently reproduced music.

  The recording / reproducing apparatus of the present invention includes a chord information changing unit for detecting a change in the chord information of music being played back by the reproducing unit, and a code information change detected by the chord information changing unit. Code information predicting means for predicting code information that transitions to, and is configured to select music using the music selecting means based on the code information predicted by the code information predicting means.

  The recording / reproducing apparatus configured as described above detects a change in the chord information of the music being reproduced by the reproducing means by the chord information changing means, and transitions to the next when the chord information changing means detects the change of the chord information. Since the chord information can be predicted by the chord information predicting means, the music selecting means can automatically select the music to be reproduced next based on the changing chord information predicted by the chord information predicting means.

  The recording / reproducing apparatus of the present invention further includes a code information table in which code information to be transitioned is determined in advance, and music to be reproduced next to music reproduced by the reproducing means is based on the code information table. It is comprised so that a music may be selected using a music selection means.

  Since the recording / reproducing apparatus configured in this way is provided with a chord information table in advance, the chord information of the music being reproduced is compared with the chord information table, and the music to be reproduced next is selected using the music selection means. Automatically select and play music.

  The totalizing circuit of the recording / reproducing apparatus of the present invention acquires and stores music data from a recording medium on which music is recorded, and also reads out the music being reproduced when the stored music data is read and reproduced. It is configured to detect chord information and select music similar to the music being reproduced as the next music.

The totalizing circuit of the recording / reproducing apparatus of the present invention acquires and stores music data from a recording medium on which music is recorded, and also reads out the music being reproduced when the stored music data is read and reproduced. The chord information and the tempo information are detected and music similar to the music being reproduced is selected as the next music.
Furthermore, the totalizing circuit of the recording / reproducing apparatus of the present invention simultaneously acquires and stores music data and the chord information of the music from a recording medium on which music is recorded, and also reads and reproduces the stored music data. The chord information and the tempo information similar to the music to be reproduced next are selected and reproduced from the chord information and the tempo information of the music being reproduced.

  As described above, the recording / reproducing apparatus of the present invention can select music to be reproduced next based on the chord information and tempo information of the music being reproduced, and automatically reproduces music similar to the music currently being reproduced. You can select and play.

  Further, when music data is acquired from a recording medium, the chord information and / or tempo information is also stored in the recording means so that the music is currently being reproduced when the reproducing means is used to reproduce the music. Since music having chord information and tempo information that is close to music is automatically selected and played, continuous music with no sense of incongruity can be enjoyed.

Next, the best mode for carrying out the present invention will be described in detail with reference to the drawings.
(First embodiment)
FIG. 1 is a block diagram showing the configuration of the recording / reproducing apparatus according to the first embodiment.

  As shown in FIG. 1, the recording / reproducing apparatus P according to the first embodiment includes a control unit 1 that controls the recording / reproducing apparatus P, a reproducing unit 2 that reproduces music data stored in the data recording unit 6, An acquisition unit 3 that acquires music data from a recording medium in which music is stored, a chord extraction unit 4 that extracts chord information from music data that is played back by the playback unit 2, and a chord progression extracted by the chord extraction unit 4 The music selection unit 5 selects music data to be reproduced next, and the data recording unit 6 stores the music data and the chord information extracted by the chord extraction unit 4.

  Here, the control unit 1 is configured to control the recording / reproducing apparatus P. In particular, the operations of the reproducing unit 2, the acquiring unit 3, the code extracting unit 4, the music selecting unit 5, and the data recording unit 6 are performed. It is configured so that it can be controlled.

The reproduction unit 2 is configured to read and reproduce music data stored (recorded) in the data recording unit 6.
The acquisition unit 3 can acquire music data from a recording medium (CD, DVD, HDD audio, flash memory, etc.), and the acquired music data is configured to be stored in the data recording unit 6. .

  The chord extraction unit 4 is configured to be able to extract the chord progression from the music data reproduced by the reproduction unit 2. Note that the chord information is a chord used for music, for example, F, G, Em, Am, F, D, G, etc., which are common as chords in music, and generally also as a key It is said.

  The music selection unit 5 is configured to select music data to be reproduced from the data recording unit 6 after the music being reproduced ends based on the chord progression extracted by the chord extraction unit 4.

  The data recording unit 6 is configured to store the music data acquired by the acquiring unit 3. In addition, the chord progression extracted by the chord extraction unit 4 can be simultaneously saved as supplementary data of music data. The data recording unit 6 can use a magnetic recording medium such as a flash memory or a hard disk.

  In addition, although the control unit 1, the reproduction unit 2, the acquisition unit 3, the chord extraction unit 4, and the music selection unit 5 are individually provided, the integrated circuit L may be integrated into one.

  In the first embodiment, a description will be given assuming that the data recording unit 6 stores a plurality of music data to which supplementary data is added. Note that music data is not stored in the data storage unit 6 from the beginning, but music data including supplemental data is stored every time the recording medium is reproduced. In the embodiment of the present invention, A description will be given with music data accumulated.

Next, the operation of the recording / reproducing apparatus P will be described with reference to a flowchart.
FIG. 2 is a flowchart showing the operation of the recording / reproducing apparatus according to the first embodiment.

  First, music data is acquired from the recording medium using the acquisition unit 3 and stored in the data recording unit 6 (S1). Next, the music data is read from the data recording unit 6, the music is reproduced using the reproduction unit 2 (S2), and the chord information is extracted from the music (music data) reproduced using the code extraction unit 4 (S3). ). The extracted chord information is stored in the data recording unit 6 as supplementary data of music data (S4). Then, the control unit 1 determines whether or not the music being played has approached the end portion (S5), and if the music is not the end portion (S5, NO), the music being played approaches the end portion. Repeat until confirmation.

  If the control unit 1 determines that the music being played has approached the end portion (S5, YES), it is selected whether the music data that is the same as or similar to the chord information of the music being played is stored in the data recording unit 6 The unit 5 performs a search (S6). If there is similar music data (S7, YES), the similar music data is selected from the data recording unit 6, and the selected music data is reproduced after the currently reproduced music is completed (S8). In S7, if the control unit 1 determines that there is no similar music data via the music selection unit 5 (S7), the data being played back after the music being played ends regardless of the code information of the music data being played back. The music data stored in the recording unit 6 is reproduced (S9). Note that the end portion of music indicates, for example, less than half of the song length, 10 seconds before the end of music, or 15 seconds before.

The recording / reproducing apparatus P according to the first embodiment configured as described above acquires music data from the recording medium using the acquisition unit 3 and stores it in the data recording unit 6 and also stores it in the data recording unit 6. When the music data is reproduced, the chord extraction unit 4 extracts the chord information and stores it as supplementary data of the music data. When the control unit 1 detects that the music data being played is approaching the end portion, the data recording is performed. The music data stored in the section 6 is similar to the currently reproduced chord information. The music selection section 5 selects the music, and the music having the similar chord information after the currently reproduced music is finished. Data can be played back.

(Second Embodiment)
Next, a second embodiment will be described with reference to the drawings.
FIG. 3 is a block diagram showing the configuration of the recording / reproducing apparatus according to the second embodiment.

The recording / reproducing apparatus P1 in the second embodiment includes a control unit 11, an acquisition unit 12, a reproduction unit 13, a music information detection unit 14, a music selection unit 15, and a data recording unit 16.
The control unit 11, the acquisition unit 12, the reproduction unit 13, the music selection unit 15, and the data recording unit 16 are the same as those in the first embodiment, and detailed description thereof is omitted.

  Here, the music information detection unit 14 detects and extracts the chord information and the tempo information from the music data reproduced by the reproduction unit 13, and the chord information and the tempo information detected by the music information detection unit 14 are extracted from the music data. The data recording unit 16 can store the supplemental data. Note that the chord information is a chord used for music. For example, F, G, Em, Am, F, D, G are commonly used as chords in music, and are generally also referred to as keys. It has been broken. The tempo information is the speed of music that generally indicates slow tempo, medium tempo, uptempo, etc. used in music, and is generally used and marked as BPM, BEAT, or the like.

  In addition, although the control unit 11, the acquisition unit 12, the reproduction unit 13, the music information detection unit 14, and the music selection unit 15 are individually provided, they may be configured as an integrated circuit L1.

  In the second embodiment, the description will be made assuming that the data recording unit 16 stores a plurality of music data to which supplementary data is added.

Next, the operation of the recording / reproducing apparatus P1 will be described with reference to a flowchart.
FIG. 4 is a flowchart showing the operation of the recording / reproducing apparatus in the second embodiment.

  First, music data is acquired from a recording medium and stored in the data recording unit 16 (S10). Next, the music data is read from the data recording unit 16 and the music is reproduced using the reproducing unit 13 (S11), and the chord information and tempo information of the music being reproduced are extracted using the music information detecting unit 14 (S11). S12). The chord information and tempo information extracted by the music information detection unit 14 are stored in the data recording unit 16 as supplementary data of the music data (S13), and the control unit 11 determines whether or not the music being played is close to the end portion. If it is determined (S14) and it is determined that the music is not the end portion (S14, NO), the confirmation is repeated until the music being played approaches the end portion.

  If the control unit 11 determines that the music being played has approached the end portion (S14, YES), music data that is the same as or similar to the chord information and tempo information of the music being played is stored in the data recording unit 16. The music selection section 15 performs a search for whether or not it is performed (S15). If similar music data is stored in the data recording unit 16 and there is music data that is the same as or similar to the music being played back (S16, YES), the music being played back is ended. The music data selected later by the music selection unit 15 is reproduced (S17). If there is no similar music data in S16 (S7), it is stored in the data recording unit 6 after the music being played back regardless of the code information and tempo information of the music data being played back. The music data being played is reproduced (S18).

The recording / reproducing apparatus P1 in the second embodiment configured as described above reproduces the music data stored in the data recording unit 16 and simultaneously extracts the chord information and the tempo information by the music information detecting unit 14 and the music data. When the control unit 11 detects that the music data being stored is being played close to the end portion, the chord information currently being played among the music data stored in the data recording unit 16 and The music selection unit 5 automatically searches for the same or similar tempo information, and when there is the same or similar music data, the music data selected by the music selection unit 5 after the currently played music is finished. Can be played.

  In addition, when the music being played back in the second embodiment approaches the end portion, the music to be played next is searched from the data recording unit 6, but the present invention is not limited. The music recording unit 6 is searched for music that matches the chord progression of the music data being played after the music length of the music being played is more than half, and the searched music data is searched for the music data currently being played. The same effect can be obtained even if it is configured such that it is automatically switched and played back at a point that coincides with the chord progression.

Next, the third embodiment will be described in detail.
FIG. 5 is a block diagram showing the configuration of the recording / reproducing apparatus of the third embodiment.

  As shown in FIG. 5, the recording / reproducing apparatus P2 of the third embodiment includes a control unit 20, a reproducing unit 21, a music data information obtaining unit 22, an information recording unit 23 (data recording units 6, 16), and a music selection unit. 24.

Here, the control unit 20 is configured to control the recording / playback device P2 and to control the playback unit 21, the music data information acquisition unit 22, the information recording unit 23, and the music selection unit 24.
The reproduction unit 21 reproduces music data stored in the information recording unit 23.
In addition, the control unit 20, the playback unit 21, the information acquisition unit 22, the music data information acquisition unit 22, and the music selection unit 24 are provided individually, but are not particularly limited, and are configured as a single integrated circuit L2. May be.

  The music data information acquisition unit 22 is configured to acquire the chord information at the same time as acquiring the music data from the recording medium and to simultaneously store the chord information in the information recording unit 23 as supplementary data of the music data and the music data. ing.

  The information recording unit 23 (data recording units 6 and 16) is configured to store the music data and chord information acquired by the music data acquisition unit 22. In the third embodiment, a description will be given assuming that music data having a plurality of chord information is stored in advance in the information recording unit 23.

  The music selection unit 24 is configured to be able to select music data having similar or the same code information as the information recording unit 23 according to the chord information of the music being reproduced.

Next, the operation of the recording / reproducing apparatus P2 will be described with reference to a flowchart.
FIG. 6 is a flowchart showing the operation of the recording / reproducing apparatus in the third embodiment. FIG. 7 is a schematic diagram showing a code information table.

First, music data and chord information are extracted from the recording medium using the music data information acquisition unit 22 (S20) and stored in the information recording unit 23 (S21). Next, music data is read from the information recording unit 23 and music is played back using the playback unit 21 (S22). Then, the control unit 20 determines whether or not the music being played has approached the end portion (S23), and if it is determined that the music is not the end portion (S23, NO), the music being played is the end portion. Repeat the music playback position until it approaches.

  When the control unit 20 determines that the music being played has approached the end portion (S23, YES), it is selected whether music data that is the same as or similar to the chord information of the music being played is stored in the information recording unit 23 The unit 24 performs a search (S24). If there is similar music data in the information recording unit 23 (S25, YES), the music data selected by the music selection unit 24 is played after the currently played music is finished (S26). If there is no similar music data in S25 (S25, NO), it is stored in the information recording unit 23 after the music being played back regardless of the code information of the music data being played back. Music data is reproduced (S27).

  The recording / reproducing apparatus P2 in the third embodiment configured as described above simultaneously extracts the chord information using the music data information acquisition unit 22 when storing the music data from the recording medium in the information recording unit 23. And the music data stored in the information recording unit 23 is reproduced, and when the control unit 20 detects that the music data being reproduced has approached the end portion, the music stored in the information recording unit 23 The music selection section 24 automatically searches for the same or similar code information of the currently playing music from the data, and when there is the same or similar music data, the currently playing music ends. After that, the music data selected by the music selection unit 24 can be reproduced.

  When music data and tempo information are stored from a recording medium using the music data information acquisition unit 22, for example, as shown in FIG. 7, a plurality of names including track name, artist name, code information, and extracted time are included. By storing the chord extraction position and the like, when the music being played is close to the end, the music selection unit 24 is currently playing compared to the music data stored in the information recording unit 23 Music to be played after music can be automatically selected.

  In the third embodiment, when the music data being played approaches the end portion, it is the same as the code information of the music currently being played from the music data stored in the information recording unit 23 or The music selection unit 24 automatically searches for similarities, but this does not limit the present invention. For example, the code of the music data currently being reproduced after the music length of the reproduced music has exceeded half has elapsed. It may be configured to search whether music data having a chord progression similar to the progression is stored in the information storage unit 23. Next, this embodiment will be described in detail with reference to a flowchart.

FIG. 8 is a flowchart showing another form of the third embodiment.
As shown in FIG. 8, first, music data and chord information are extracted from the recording medium using the music data information acquisition unit 22 (S40) and stored in the information recording unit 23 (S41). Next, music data is read from the information recording unit 23 and music is played back using the playback unit 21 (S42). Then, it is determined whether or not the music being played has passed half of the song length (the song length) (S43), and if the music being played has not been played, it has not exceeded half the song length. If it is determined (S43, NO), the confirmation of the music playback position is repeated until half of the length of the music being played has elapsed.

When the control unit 20 determines that half of the length of the music being played has elapsed (S43, YES), music data that is the same as or similar to the code signal of the music being played is stored in the information recording unit 23. A search is performed by the music selection unit 24 (S44). If there is similar music data in the information recording unit 23 (S25, YES), it is switched and reproduced at the point where the chord progression of the currently reproduced music coincides with the music code to be reproduced next (S46). In S45, if there is no music data with similar chord progression (S45, NO), it is stored in the information recording unit 23 after the music being played back, regardless of the chord progression of the music data being played. The played music data is reproduced (S47).
The chord progression is a combination of individual chord information, for example, a combination of C, F, and G.

  The recording / reproducing apparatus according to another embodiment configured as described above uses the music data information acquisition unit 22 to simultaneously extract and store the chord information when storing the music data from the recording medium in the information recording unit 23. When the music data stored in the information recording unit 23 is reproduced, it is determined whether or not the music length of the music data being reproduced has exceeded half, and the control unit 20 determines that more than half has elapsed. When the music selection unit 24 automatically searches the music data stored in the recording unit 23 for the same or similar chord progression of the currently reproduced music, and there is the same or similar music data Thus, the chord progression of the currently reproduced music can be switched and reproduced when the chord progression of the next reproduced music coincides. For this reason, since the same or similar chord progression can be continuously played back, music can be played back continuously and enjoyed without any sense of incongruity.

Next, a fourth embodiment will be described in detail with reference to the drawings.
Note that detailed description of portions having the same configuration as that of the third embodiment is omitted.

The recording / playback apparatus according to the fourth embodiment includes a control unit 20, a playback unit 21, a music data information acquisition unit, an information recording unit 23, and a music selection unit 24.
Here, the control unit 20, the reproduction unit 21, the information recording unit 23, and the music selection unit 24 have the same configuration as in the third embodiment, and detailed description thereof is omitted.

  The music data information acquisition unit in the fourth embodiment acquires the music data from the recording medium and simultaneously acquires the chord information and the tempo information at the same time, and stores the chord information as supplementary data of the music data and the music data in the information recording unit 23. And tempo information can be stored simultaneously.

  Next, the operation of the recording / reproducing apparatus in the fourth embodiment will be described with reference to a flowchart. FIG. 9 is a flowchart showing the operation of the recording / reproducing apparatus in the fourth embodiment.

  First, music data, chord information, and tempo information are simultaneously extracted from a recording medium using a music data information acquisition unit (S30) and stored in an information recording unit (S31). Next, music data is read from the information recording unit, and the music is reproduced using the reproduction unit (S32). Then, the control unit determines whether or not the music being played has approached the end portion (S33), and if it is determined that the music is not the end portion (S33, NO), the music being played becomes the end portion. Repeat the confirmation of the music playback position until it approaches.

  If the control unit determines that the music being played has approached the end portion (S33, YES), is music data that is the same as or similar to the chord information and tempo information of the music being played stored in the information recording unit? The music selection section performs a search (S34). If similar music data exists in the information recording unit (S35, YES), the music data selected by the music selection unit after the currently played music is played back (S36). If there is no similar music data in S35 (S35, NO), it is stored in the information recording unit after the music being played back regardless of the code information and tempo information of the music data being played back. The music data being played is reproduced (S37).

The recording / reproducing apparatus in the fourth embodiment configured as described above simultaneously extracts the chord information and the tempo information using the music data information acquisition unit when storing the music data from the recording medium in the information recording unit 23. And when the control unit detects that the music data being played is close to the end portion, the music data stored in the information recording unit The music selection section automatically searches for the same or similar code information and tempo information of the currently playing music from the music, and when there is the same or similar music data, the currently playing music is finished The music data selected later by the music selection section can be reproduced.

  In the fourth embodiment, the chord information and the tempo information are also extracted and stored at the same time, the music data stored in the information recording unit is reproduced, and the reproduction of the music data of the currently reproduced music is to be finished. The music is automatically selected based on the chord information and the tempo information when the next music is selected. However, the present invention is not limited to this, for example, the other music of the third embodiment As shown in the embodiment, after the music length of the music being played is halved or more, the music data that matches the chord progression of the music data being played is searched, and the chord progression of the music being played is searched It may be configured to automatically switch when the chord progression of the music to be reproduced next coincides.

  As described above, the first embodiment to the fourth embodiment have been described. However, the present invention is not limited. For example, a chord information table in which chord progression is set in advance, The chord information change detection unit for detecting the chord information change of the music data, or the chord information for comparing the chord information change detected by the chord information change detecting unit with the chord information table to predict the chord information to be next transitioned You may make it the structure provided with the estimation part.

(Fifth embodiment)
Next, a fifth embodiment of a recording / reproducing apparatus including a code information detection unit, a code information prediction unit, and a code information table will be described in detail with reference to the drawings.
FIG. 10 is a block diagram showing the configuration of the recording / reproducing apparatus of the fifth embodiment. FIG. 11 is a schematic diagram showing the configuration of the code information table.

As shown in FIG. 10, the recording / reproducing apparatus P3 includes a control unit 30, a reproduction unit 31, an acquisition unit 32, a code extraction unit 33, a code information change detection unit 34, a code information prediction unit 35, and a code. An information table 36, a data recording unit 37, and a music selection unit 38 are included.
The control unit 30, the playback unit 31, the acquisition unit 32, the code extraction unit 33, the code information change detection unit 34, the code information prediction unit 35, the code information table 36, and the music selection unit 38 are individually configured. You may comprise as the integrated circuit L3 put together.

  Here, the control unit 30, the reproduction unit 31, the acquisition unit 32, the code extraction unit 33, the data recording unit 37, and the music selection unit 38 are the control unit 1, the reproduction unit 3, the acquisition unit 2, and the like described in the first embodiment. This is the same as the code extraction unit 4, the data recording unit 6, and the music selection unit 5, and will not be described in detail.

  The chord information change detection unit 34 detects a change in chord information of the music being played back by the playing unit 31, and can detect, for example, a point where the chord changed from C to Am as chord information. It is configured as follows.

The code information prediction unit 35 is configured to be able to predict the next transition code from the code information detected by the code information change detection unit 34 using the code information table 36.
As shown in FIG. 11, the code information table 36 is configured as a table of codes that should be shifted next to the immediately preceding code. For example, when the immediately preceding chord is C, chord progression information is recorded in the chord information table as C, F, G, Am, Dm, Em, E, and the like as the chord candidates to be transitioned next.

  The recording / reproducing apparatus P3 in the fifth embodiment configured as described above acquires music data from the recording medium using the acquisition unit 32, stores it in the data recording unit 37, and stores it in the data recording unit 37. At the same time that the music data is reproduced, the chord extraction unit 33 extracts chord information and stores it as supplementary data of the music data. Then, when the chord information change detecting unit 34 detects a change in the chord information of the music data being played back and the control unit 30 detects that the music being played is approaching the end portion, the chord information change detecting unit 34 is detected. The chord information prediction unit 35 predicts the next transition code based on the chord information table 36 based on the chord information change detected in step S3, and the music selection unit 38 selects the music data stored in the data recording unit 37. The music data automatically selected and the music data selected by the music selection section 38 can be reproduced after the currently reproduced music is completed.

  In the fifth embodiment, when music data stored in the data recording unit 37 is reproduced, a change in chord information is detected, and the chord information table 36 is predicted based on the chord information table 36. Although the music selection unit 38 automatically selected the music, the present invention is not limited to this, and when the music data is stored in the data recording unit 37, the chord extraction unit 33 simultaneously extracts the chord information to supplement the music data. When the data is simultaneously saved and played back, the chord information change detection unit 34 detects a change in the chord information of the music from the chord information stored as supplementary data, and the music to be played back to the next song is automatically played by the music selection unit 38. Alternatively, the music may be selected. In particular, when music data is being played, when the user fast-forwards or intentionally plays the next song, the chord information prediction unit 35 predicts based on the chord information stored with the music data. The music data to be reproduced can be automatically selected and reproduced using the music selection unit 38.

(Sixth embodiment)
Next, a sixth embodiment will be described with reference to the drawings.
FIG. 12 is a block diagram showing the configuration of the recording / reproducing apparatus of the sixth embodiment.
As shown in FIG. 11, the recording / reproducing apparatus P4 includes a control unit 40, a reproduction unit 41, an acquisition unit 42, a code extraction unit 43, a code information table 44, a code information prediction unit 45, and a music selection unit 46. And a data recording unit 47.
Although the control unit 40, the reproduction unit 41, the acquisition unit 42, the code extraction unit 43, the code information table 44, the code information prediction unit 45, and the music selection unit 46 are individually configured, the integrated circuit L4 combined into one. You may comprise as.

  The recording / reproducing apparatus P4 of the sixth embodiment configured as described above acquires the music data from the recording medium by the acquisition unit 42, stores it in the data recording unit 47, and stores the music data stored in the data recording unit 47. Are reproduced using the reproduction unit 41. Then, the chord information extraction unit 43 extracts the chord information of the music data (music) being reproduced, and the chord information prediction unit 45 predicts the chord information that will transition next from the chord information table 44. When the control unit 40 determines that the music data being played is close to the end portion by using the prediction, the music selection unit 46 automatically selects the next song based on the chord information predicted by the chord information prediction unit 44. Can be selected and played.

As described above, the first to sixth embodiments have been described. However, the present invention is not limited, and similar effects can be obtained even if various modifications are made.
For example, in the first embodiment to the fourth embodiment, the same effect can be obtained even if the code information table as shown in FIG. 11 is provided. In particular, by providing a chord information table, it can be used when extracting (detecting) chord information from music data.

Next, a method for extracting code information will be described. FIG. 13 is a schematic diagram showing a comparison between predetermined chord information and input chord information of music.
As shown in FIG. 13, the recording / reproducing apparatus holds a plurality of predetermined chord information (chord progression) waveforms A, and the chord information waveform A and an input music waveform of music to be reproduced (input). The code information can be specified by comparing B. Specifically, as shown in FIG. 13, each waveform change point, C1 to C10, is compared. In this way, the code information can be specified from the comparison result.

  In the first to fourth embodiments, a code information prediction unit may be provided. With this configuration, even if the music being played is changed by the user, it is possible to automatically select and play the music to be played next predicted by the code information prediction unit.

  Further, in the first to fourth embodiments, for example, a chord information change detection unit is provided, and the same effect can be obtained even if the data storage unit and the information storage unit are stored together with the music data. Obtainable. In particular, as shown in FIG. 7, by storing in detail the code and location where the code information has changed, even if the music being played by the user is sent forward or sent to the next song, it can be played flexibly. You can select music.

  When music data having a chord progression similar to the chord progression of the currently reproduced music data is searched for and played back after the music length of the reproduced music has exceeded half or more For example, as shown in FIG. 14, by using music data and chord information in the information storage unit 23, when music is played, when more than half of the length of music has passed, playback from which time of music to play next You may make it build a playlist automatically. In particular. As shown in FIG. 14, assuming that the playback start time of Track A is 2 seconds, and music selection is performed based on the chord progression at the time when more than half of the track A song length has elapsed, and as a result, the track selection is Track B. A table is created and used so that the chord progression of Track A and Chord progression of Track B coincides with the chord progression of Track A at 3 minutes and Track B at 1 minute 40 seconds. Also good. By configuring in this way, it is possible to have a playlist of music to be played in advance without having to search for music to be played next by comparing chord progressions while playing music data.

  As described above, the present invention detects code information from music data, and automatically reproduces code information similar to or the same as that of the music being played when the music data being played is about to end. Therefore, the present invention is useful as a recording / reproducing apparatus that can store and automatically reproduce music having the same or similar code information.

The block diagram which shows the structure of the recording / reproducing apparatus in 1st Embodiment The flowchart which shows operation | movement of the recording / reproducing apparatus in 1st Embodiment. The block diagram which shows the structure of the recording / reproducing apparatus in 2nd Embodiment Flow chart showing the operation of the recording / reproducing apparatus in the second embodiment The block diagram which shows the structure of the recording / reproducing apparatus of 3rd Embodiment The flowchart which shows operation | movement of the recording / reproducing apparatus in 3rd Embodiment. Schematic diagram showing the code information table Flow chart showing another embodiment of the third embodiment Flow chart showing the operation of the recording / reproducing apparatus in the fourth embodiment The block diagram which shows the structure of the recording / reproducing apparatus of 5th Embodiment Schematic diagram showing the configuration of the code information table A block diagram showing a configuration of a recording / reproducing apparatus of a sixth embodiment Schematic diagram showing a comparison between predetermined chord information and chord information of input music Schematic diagram showing a playlist in the embodiment

Explanation of symbols

1, 11, 20, 30, 40 ... control unit 2, 13, 21, 31, 41 ... reproduction unit 3, 14 ... acquisition unit 4, 33, 43 ... code extraction unit 5, 17 , 24, 38, 46 ... music selection section 6, 16, 37, 47 ... data storage section 15 ... music information detection section 22 ... music data information acquisition section 34 ... chord information change detection section 35, 45 ... Code information prediction unit 36, 44 ... Code information table P, P1, P2, P3, P4 ... Recording / playback apparatus L, L1, L2, L3, L4 ... Integrated circuit

Claims (7)

Music data acquisition means for acquiring music data from a recording medium;
Data recording means for storing the music data;
Reproduction means for reading out and reproducing music data from the data recording means;
Code information detecting means for detecting code information of music data being played by the playing means;
A recording / reproducing apparatus comprising: music selection means for selecting music data to be reproduced for the next music from the data recording means based on a detection result of the code information detection means. Music data acquisition means for acquiring music data from a recording medium;
Data recording means for storing the music data;
Reproduction means for reading out and reproducing music data from the data recording means;
Music information detecting means for detecting chord information and tempo information of the music being played by the playing means;
A recording / reproducing apparatus comprising: music selection means for selecting music to be reproduced in the next music from the data recording means based on a detection result of the music information detection means. Music data information acquisition means for simultaneously acquiring music data and code information of the music data from a recording medium;
Information recording means for storing the music data and the code information acquired by the music data information acquisition means;
Reproduction means for reading out and reproducing music data from the information recording means;
Music selection means for selecting the next song from the code information of the music data being reproduced by the reproduction means;
A recording / reproducing apparatus comprising: Music data information acquisition means for acquiring music data and code information and tempo information of the music data from a recording medium;
Information recording means for storing the music data acquired by the music data information acquisition means, the chord information and the tempo information;
Reproduction means for reading out and reproducing music data from the information recording means;
Music selection means for selecting the next song from the chord information and tempo information of the music data being reproduced by the reproduction means;
A recording / reproducing apparatus comprising: The recording / reproducing apparatus comprises: code information changing means for detecting a change in the chord information of music being reproduced by the reproducing means;
Code information prediction means for predicting code information to be next transitioned from a change in code information detected by the code information change means,
5. The recording / reproducing apparatus according to claim 1, wherein the music selection unit uses the music selection unit based on the code information predicted by the code information prediction unit.   The recording / reproducing apparatus includes a code information table in which code information to be transitioned is determined in advance, and uses the music selection unit based on the code information table for music to be reproduced next to music reproduced by the reproducing unit. 6. The recording / reproducing apparatus according to claim 1, wherein the recording / reproducing apparatus selects music. When music data is acquired from a recording medium on which music is recorded and stored, and when the stored music data is read and played back, the code information of the music being played back is detected and the music being played back is detected. An integrated circuit of a recording / reproducing apparatus configured to select similar music as the next music.

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