JP2008004217A - Audio device and audio reproducing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an audio device and an audio reproducing device randomly reproducing, even without a predetermined operation when music information contains introduction music or insertion music, music information from which such pieces of music are removed. <P>SOLUTION: The audio reproducing method for randomly reproducing the music information of a compressed audio file recorded in a recording medium, the compressed audio file having character information related to the music information in a predetermined area, includes the step S102 of skipping the music information to be reproduced when the character information matches predetermined character information. The method further includes the step S104 of further skipping the music information to be reproduced when the reproduction time of the music information is within a predetermined time. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an audio device, and more particularly, to an audio device having a function of randomly playing music in a music album.

  When music information recorded on a recording medium such as a CD (Compact Disc) or HD (Hard Disc) or a compressed audio file such as an MP3 file is reproduced by an audio device, it is generally reproduced in a predetermined order. . On the other hand, there is known an audio apparatus having a function (hereinafter referred to as random playback function) in which music information is played back in a randomly selected order without music information being played back in a predetermined order. Yes.

  By playing back the music information and the like described above using such a random playback function, the user can avoid the disadvantage of being tired of listening by playing in the same order every time, and can maintain freshness. Has merit.

For example, Patent Document 1 discloses an invention of an audio device having the random playback function described above. According to Patent Document 1, when one piece of music information is composed of a plurality of parts (movements) in classical music or the like, each part is regarded as one piece of music information and is played back randomly. In order to avoid this, the music information designated via the operation unit is grouped in advance and stored in the audio device, and when the music information is reproduced, the grouped music information is reproduced. I try to make it.
JP 2005-44418 A

  Here, the music information or the like to be reproduced by the user is, for example, in consideration of the music that has been put out before the music information or the like is reproduced (hereinafter referred to as an intro song) or the story of the entire music album. The music used between the songs (hereinafter referred to as “inserted music”) is also reproduced. However, these songs are often configured to be related to songs that are played back and forth, and if music information including intro songs or inserted songs is played back by the random playback function, it may be an intro song. For example, there is a problem that a song to be played next to an intro song and an intro song are played separately, and even an inserted song should be played in a predetermined order with consideration of the story. However, there is still a problem that it is played separately from the preceding and following songs.

  With respect to such problems, it is also possible to reproduce music information using a random reproduction function in a state in which songs related to intro songs and insertion songs are grouped in advance by the invention disclosed in Patent Document 1. However, there are many users who feel troublesome in such operations.

  The present invention has been made in view of the above-described problems, and when music information, compressed audio files, and the like include intro songs and inserted songs, these songs are excluded without performing a predetermined operation. An object of the present invention is to provide an audio device capable of randomly reproducing the music information and the like.

  In order to solve the above problems, an audio device of the present invention is an audio device having a function of randomly reproducing music information of music information recorded on a recording medium, and the music information is related to the music information. It has character information in a predetermined area, and has a random reproduction unit that skips the music information to be reproduced when the character information matches the predetermined character information. With such a configuration, for example, when the recording medium is a CD and the predetermined area is a CD-TEXT area, the character information recorded in the CD-TEXT area matches the predetermined character information. The music information to be played can be skipped.

  The audio device of the present invention is an audio device having a function of randomly reproducing music information of a compressed audio file recorded on a recording medium, and the compressed audio file stores character information related to the music information in a predetermined manner. And a random playback section that skips the music information to be played back when the character information matches the predetermined character information. With this configuration, for example, when the recording medium is an HD and the predetermined area is an ID3 tag area, reproduction is performed when the character information recorded in the ID3 tag area matches the predetermined character information. Can be skipped.

  Also, the audio device of the present invention is characterized in that the random reproduction unit further skips the music information to be reproduced when the reproduction time of the music information is a predetermined time or less. With such a configuration, even if the recorded character information does not match the predetermined character information, if the time of the music information to be reproduced is within a predetermined time, for example, 2 minutes, it is an inserted music, etc. Can be skipped.

  Moreover, the audio apparatus of the present invention is characterized by having an operation unit for designating the predetermined time. With such a configuration, the predetermined time can be changed to a user's desired time, and an inserted song or the like exceeding the predetermined time is included between the song information having a long reproduction time and the song information. It is also possible to skip the inserted music and extract and reproduce only the music information.

  The audio reproduction method of the present invention is an audio reproduction method for randomly reproducing music information of music information recorded on a recording medium, wherein the music information stores character information related to the music information in a predetermined area. And the step of skipping the piece of music information to be reproduced when the character information matches the predetermined character information. By such a method, for example, when the recording medium is a CD and the predetermined area is a CD-TEXT area, and the character information recorded in the CD-TEXT area matches the predetermined character information. The music information to be reproduced can be skipped.

  The audio reproduction method of the present invention is an audio reproduction method for randomly reproducing music information of a compressed audio file recorded on a recording medium, wherein the compressed audio file stores character information related to the music information in a predetermined manner. And having the step of skipping the piece of music information to be reproduced when the character information matches the predetermined character information. By such a method, for example, when the recording medium is HD and the predetermined area is an ID3 tag area, reproduction is performed when the character information recorded in the ID3 tag area matches the predetermined character information. Can be skipped.

  In addition, the audio playback method of the present invention includes a step of further skipping the played music information when the playback time of the music information is equal to or shorter than a predetermined time. By such a method, even if the recorded character information does not match the predetermined character information, if the time of the music information to be reproduced is within a predetermined time, for example, 2 minutes, it is an inserted music, etc. Can be skipped.

  According to the audio device or the audio playback method of the present invention, even if the music information recorded on the recording medium or the song information of the compressed audio file includes an intro song, an inserted song, or the like, without performing a predetermined operation, The intro music can be skipped, and only the music album music can be provided to the user.

  Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.

  FIG. 1 is a block diagram of an audio apparatus 100 according to an embodiment of the present invention. In FIG. 1, an audio apparatus 100 includes a drive unit 3 that drives a recording medium 1, an operation unit 5 that allows a user to perform a desired operation on the drive unit 3, and music information or compressed audio that is recorded on the recording medium 1. And a storage unit 7 for storing files. The drive unit 3 includes an optical pickup device, a motor that drives the optical pickup device, and the like, and has a function of irradiating the recording medium 1 with light and detecting reflected light from the recording medium 1 with a detector or the like.

  The operation unit 5 includes buttons, a touch panel, and the like, and has a function of selecting, for example, whether or not to perform playback, stop, recording, and random playback on the recording medium 1. Remote control operation using infrared rays is also possible. The storage unit 7 is configured by a semiconductor storage device such as an SRAM (Static Random Access Memory) or a flash memory. Note that the music information or the compressed audio file includes one or more pieces of music information and text information related to the music information or music information, and the text information includes, for example, an album name, a music title, and a performer (artist). included.

  The audio device 100 further includes an amplification unit 9 that amplifies the song information stored in the storage unit 7, a speaker 11 that outputs the amplified song information, and a display unit 13 that outputs the character information stored in the storage unit 7. And having. The display unit 13 is configured by a liquid crystal display, for example. The drive unit 3, the operation unit 5, the storage unit 7, the amplification unit 9, and the display unit 13 are all controlled by the control unit 15. The control unit 15 is realized by a processing device such as a CPU or a program executed therein, and each functional block functions by the control unit 15.

  Further, the control unit 15 controls the random reproduction unit 17. The random playback unit 17 has a function of randomly switching the playback order of music information or music information of a compressed audio file based on a program using random numbers. It has a function to skip a song (remove it from playback processing).

  When the user imports (rips) music information from the recording medium 1 such as a CD to the audio apparatus 100 configured as described above, first, the recording medium 1 is driven by the drive unit 3 and recorded on the recording medium 1. Music information is detected and stored in the storage unit 7 by the control unit 15.

  Based on the music information stored in the storage unit 7, specifically, TOC (Table of contents) information, the control unit 15 accesses a CDDB (Compact Disk Database) via the Internet, and compresses a compressed audio file such as MP3 (Mpeg Audio). Layer-3) Download text information (album name, artist name, song name, etc.) to create a file. When the user can confirm that there is no mismatch between the character information and the song information of the music information, the user instructs the operation unit 5 of the audio apparatus 100 to permit creation of the compressed audio file, thereby Is created.

  Note that CDDB is a database opened on the Internet in order to provide information related to music information recorded on a CD, such as album name, artist name, and music name, to CD playback software and peripheral devices. By downloading information related to song information by accessing the CDDB, the user can save the trouble of manually inputting the information related to the song information of the compressed audio file one by one.

  For example, when reproducing a compressed audio file without performing random reproduction, the user performs an operation to that effect on the operation unit 5 of the audio device 100. As a result, the music information of the compressed audio file is output from the speaker 11 via the amplifier 9 in the order in which it was recorded, and the display unit 13 synchronizes with the music information from which the character information of the compressed audio file is output. Is displayed. When the song information ends or when the user performs an operation to stop, the audio device 100 stops the reproduction of the song information.

  Further, when the compressed audio file is reproduced by performing random reproduction, the same processing as described above is performed until the compressed audio file is stored in the storage unit 7, but the compressed audio file stored in the storage unit 7 is processed. One piece of music information is randomly selected by the random playback unit 17. When the song information does not include predetermined character information indicating that it is an intro song or an inserted song, it is output from the speaker 11 via the amplifying unit 9, and the characters of the compressed audio file The information is displayed on the display unit 13 in synchronization with the music information to be output. However, when the music information includes predetermined character information, the music information is not output from the speaker 11. Further, the character information related to the music information is not output from the display unit 13. The above-described operation is not limited to the music information of the compressed audio file, and the same applies to the music information recorded on the CD.

  Specifically, the determination as to whether or not to play the intro music or the inserted music described above is performed by using the character information (code) or music information recorded in the CD-TEXT area of the CD or the ID3 tag area of the MP3 file. Judged by playback time.

  These regions will be briefly described with reference to the drawings. FIG. 2 is a diagram for explaining a CD-TEXT area, and FIG. 3 is a diagram showing a format of an MP3 file. As shown in FIG. 2, the CD that is one aspect of the recording medium 1 has a predetermined format. The CD is composed of a lead-in area 19 in which TOC information is recorded from the inner periphery toward the outer periphery, a data area 21 in which music information is recorded, and a lead-out area 23 that indicates the end of the data area 21. The

  The area for CD-TEXT exists in the lead-in area 19 and is composed of a title, a performer, a songwriter, a composer, an arranger, a message. This is an area for recording character information such as 8 languages. Also, as shown in FIG. 3, the ID3 tag area is an area reserved in the MP3 file, and includes a title (Title), an artist (Artist), an album name (Album), a production year (Year), and a song genre. This area stores character information such as (Genre) and comments (Comment).

  Therefore, when predetermined character information is recorded in these areas, it can be determined whether or not an intro music or an insertion music is included. For example, in the case of text information, if the text information includes text information such as “opening”, “ending”, “intro”, “Instrumental”, “prologue”, “epilogue”, etc. The information is determined to be an intro song or an insertion song.

  If the playback time included in the song information is within a predetermined time, for example, 2 minutes, the song information is determined to be an intro song or an inserted song. This is because the intro song and the inserted song often have a playback time of less than 2 minutes, and if the playback time exceeds 2 minutes, the playback ends in 3-5 minutes instead of the intro song or the inserted song. It is based on estimating that it is music information. The predetermined time may be specified by the user. As a result, even when music information having a long inserted song exceeding 2 minutes is reproduced, the inserted song can be surely skipped.

  Next, the operation of the random playback unit 17 will be described with reference to the flowchart shown in FIG.

  When the operation unit 5 is operated so that the random reproduction function is used by the user and the recording medium 1 or the MP3 file is reproduced, as shown in FIG. 4, the random reproduction unit 17 performs a plurality of songs included therein. Among the information, one piece of music information to be reproduced is selected (S101), and the music information is stored in the storage unit 7 of the audio device 100. Among the character information included in the stored music information, the character information such as “opening”, “ending”, “intro”, “Instrumental”, “prologue”, “epilogue” and the like described above is included in the ID3 tag area. If it is present (S102; Yes), the music information is selected again by the random playback unit for the music information excluding the music information from the music information to be played back (S101).

  When the character information described above is not included (S102; No), next, among the character information included in the stored music information, the above-mentioned “opening”, “ending”, “intro”, “Instrumental” It is determined whether character information such as “,“ prologue ”and“ epilogue ”is included in the CD-TEXT area (S103). When such character information is included (S103; Yes), the music information is selected again by the random playback unit for the music information excluding the music information from the music information to be played (S101). ).

  If such character information is not included (S103; No), it is further determined whether or not the reproduction time information included in the selected song information is within 2 minutes (S104). When the reproduction time information is within 2 minutes (S104; Yes), the music information is selected again by the random reproduction unit for the music information excluding the music information from the music information to be reproduced ( S101).

  When the reproduction time information included in the selected music information is not within 2 minutes (S104; No), the selected music information is reproduced (S105). When the reproduction of the selected music information is completed, it is determined whether or not the reproduction of all the music information included in the music information has been completed (S106). If there is unreproduced song information in the music information (S106; No), the song information is selected again by the random reproduction unit (S101), and if not (S106; Yes), audio reproduction is performed. Exit.

  By performing the processing of the random playback unit 17 as described above, it is possible to skip music information that expects the next music such as an intro music and an insertion music, and for users who want to enjoy a music that is not arranged for a music album. Is very suitable.

  Note that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. For example, in order not to reproduce an intro song or the like in which one piece of music information is longer than 2 minutes, it is possible to set “2 minutes” as a reference for determination to be longer, and further, the determination reference. It is also possible to provide a function for determining the time in the operation unit 5 and allow the user to select according to the music information recorded on the recording medium 1. By providing such a function in the operation unit 5, for example, even if a long talk by a singer is included between song information having a long reproduction time and song information, only the song information can be extracted and reproduced. Is possible.

  As described above, the audio device or the audio playback method according to the present invention can perform predetermined processing even if the music information recorded on the recording medium or the song information of the compressed audio file includes an intro song or an inserted song. The intro music etc. can be skipped without operation, and industrial applicability is high.

FIG. 1 is a block diagram of an audio apparatus. FIG. 2 is a diagram for explaining a CD-TEXT area. FIG. 3 is a diagram showing the format of the MP3 file. FIG. 4 is a flowchart showing the operation of the random playback unit.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Recording medium 3 Drive part 5 Operation part 7 Storage part 9 Amplification part 11 Speaker 13 Display part 15 Control part 17 Random reproduction part 19 Lead-in area 21 Data area 23 Lead-out area 100 Audio apparatus

Claims (7)

An audio device having a function of randomly reproducing music information of music information recorded on a recording medium,
The music information has character information related to the music information in a predetermined area,
An audio apparatus, comprising: a random reproduction unit that skips the music information to be reproduced when the character information matches predetermined character information. An audio device having a function of randomly reproducing music information of a compressed audio file recorded on a recording medium,
The compressed audio file has character information related to the song information in a predetermined area,
An audio apparatus, comprising: a random reproduction unit that skips the music information to be reproduced when the character information matches predetermined character information.   The audio device according to claim 1, wherein the random playback unit further skips the music information to be played when the playback time of the music information is equal to or shorter than a predetermined time.   The audio apparatus according to claim 3, further comprising an operation unit that designates the predetermined time. An audio reproduction method for randomly reproducing music information of music information recorded on a recording medium,
The music information has character information related to the music information in a predetermined area,
An audio reproducing method comprising a step of skipping the music information to be reproduced when the character information matches predetermined character information. An audio reproduction method for randomly reproducing music information of a compressed audio file recorded on a recording medium,
The compressed audio file has character information related to the song information in a predetermined area,
An audio reproducing method comprising a step of skipping the music information to be reproduced when the character information matches predetermined character information. The audio reproduction method according to claim 5 or 6, further comprising a step of skipping the reproduced music information when the reproduction time of the music information is equal to or shorter than a predetermined time.

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