JP3883995B2 - 光ディスク再生装置 - Google Patents
光ディスク再生装置 Download PDFInfo
- Publication number
- JP3883995B2 JP3883995B2 JP2003332232A JP2003332232A JP3883995B2 JP 3883995 B2 JP3883995 B2 JP 3883995B2 JP 2003332232 A JP2003332232 A JP 2003332232A JP 2003332232 A JP2003332232 A JP 2003332232A JP 3883995 B2 JP3883995 B2 JP 3883995B2
- Authority
- JP
- Japan
- Prior art keywords
- beat
- audio signal
- search
- time
- beats
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000003287 optical effect Effects 0.000 title claims description 41
- 230000005236 sound signal Effects 0.000 claims description 55
- 238000001514 detection method Methods 0.000 claims description 21
- 230000033764 rhythmic process Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 description 16
- 230000006870 function Effects 0.000 description 7
- 208000003028 Stuttering Diseases 0.000 description 3
- 230000001172 regenerating effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
- G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H1/00—Details of electrophonic musical instruments
- G10H1/36—Accompaniment arrangements
- G10H1/40—Rhythm
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
- G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
- G11B27/30—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording
- G11B27/3027—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording used signal is digitally coded
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H2210/00—Aspects or methods of musical processing having intrinsic musical character, i.e. involving musical theory or musical parameters or relying on musical knowledge, as applied in electrophonic musical tools or instruments
- G10H2210/031—Musical analysis, i.e. isolation, extraction or identification of musical elements or musical parameters from a raw acoustic signal or from an encoded audio signal
- G10H2210/076—Musical analysis, i.e. isolation, extraction or identification of musical elements or musical parameters from a raw acoustic signal or from an encoded audio signal for extraction of timing, tempo; Beat detection
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
- Electrophonic Musical Instruments (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Description
光ディスクから、当該光ディスクに記録されたオーディオ信号と当該オーディオ信号の再生時間に関連する時間情報とを再生する再生手段と、
前記再生手段が再生した前記オーディオ信号から、当該オーディオ信号が表す音楽のリズムに含まれる拍を検出する拍検出手段と、
前記再生手段が再生した前記オーディオ信号を記憶する第1記憶手段と、
前記拍検出手段が検出した、連続する拍のそれぞれに対応するオーディオ信号について、前記再生手段が再生した時間情報を記憶する第2記憶手段と、
拍の探索操作を受け付ける第1の操作手段と、
前記第1の操作手段が前記探索操作を受け付けると、前記第2記憶手段に記憶された、前記連続する拍の時間情報を、当該時間情報の表す時間順またはその逆順に探索し、前記第1記憶手段に記憶されたオーディオ信号を、探索した時間情報から読み出す制御手段と、
を備えることを特徴とする光ディスク再生装置を提供する。
Claims (2)
- 光ディスクから、当該光ディスクに記録されたオーディオ信号と当該オーディオ信号の再生時間に関連する時間情報とを再生する再生手段と、
前記再生手段が再生した前記オーディオ信号から、当該オーディオ信号が表す音楽のリズムに含まれる拍を検出する拍検出手段と、
前記再生手段が再生した前記オーディオ信号を記憶する第1記憶手段と、
前記拍検出手段が検出した、連続する拍のそれぞれに対応するオーディオ信号について、前記再生手段が再生した時間情報を記憶する第2記憶手段と、
拍の探索操作を受け付ける第1の操作手段と、
前記第1の操作手段が前記探索操作を受け付けると、前記第2記憶手段に記憶された、前記連続する拍の時間情報を、当該時間情報の表す時間順またはその逆順に探索し、前記第1記憶手段に記憶されたオーディオ信号を、探索した時間情報から読み出す制御手段と、
を備えることを特徴とする光ディスク再生装置。 - 請求項1記載の光ディスク再生装置であって、
前記制御手段による拍探索のモードの指定を受け付ける第2の操作手段を有し、
前記拍検出手段は、前記拍を、前記拍に対応するオーディオ信号の信号レベルにより分類し、
前記第2の操作手段が前記モードとして強拍の探索モードの指定を受け付けた場合には、前記制御手段は、前記第1の操作手段が前記探索操作を受け付けると、前記管理手段が管理する時間情報のうち、前記拍検出手段により強拍に分類された拍の時間情報を、当該時間情報の表す時間順またはその逆順に探索することを特徴とする光ディスク再生装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003332232A JP3883995B2 (ja) | 2003-09-24 | 2003-09-24 | 光ディスク再生装置 |
EP04251375A EP1519361B1 (en) | 2003-09-24 | 2004-03-10 | Optical disc reproducing apparatus |
US10/797,061 US7251204B2 (en) | 2003-09-24 | 2004-03-11 | Optical disc reproducing apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003332232A JP3883995B2 (ja) | 2003-09-24 | 2003-09-24 | 光ディスク再生装置 |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2005100521A JP2005100521A (ja) | 2005-04-14 |
JP2005100521A5 JP2005100521A5 (ja) | 2006-05-11 |
JP3883995B2 true JP3883995B2 (ja) | 2007-02-21 |
Family
ID=34191461
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2003332232A Expired - Lifetime JP3883995B2 (ja) | 2003-09-24 | 2003-09-24 | 光ディスク再生装置 |
Country Status (3)
Country | Link |
---|---|
US (1) | US7251204B2 (ja) |
EP (1) | EP1519361B1 (ja) |
JP (1) | JP3883995B2 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPWO2008107994A1 (ja) * | 2007-03-08 | 2010-06-10 | パイオニア株式会社 | 情報再生装置及び方法、並びにコンピュータプログラム |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006104163A1 (ja) * | 2005-03-28 | 2006-10-05 | Pioneer Corporation | オーディオ信号再生装置 |
JP4467601B2 (ja) * | 2007-05-08 | 2010-05-26 | ソニー株式会社 | ビート強調装置、音声出力装置、電子機器、およびビート出力方法 |
JP4801029B2 (ja) * | 2007-09-21 | 2011-10-26 | 株式会社ディーアンドエムホールディングス | 再生装置、再生方法、記録媒体及びプログラム |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3373315B2 (ja) | 1995-01-20 | 2003-02-04 | パイオニア株式会社 | 拍数検出装置 |
US5614687A (en) * | 1995-02-20 | 1997-03-25 | Pioneer Electronic Corporation | Apparatus for detecting the number of beats |
JP2000251411A (ja) | 1999-02-24 | 2000-09-14 | Nippon Columbia Co Ltd | 再生装置 |
JP3812332B2 (ja) | 2000-02-25 | 2006-08-23 | ティアック株式会社 | 記録媒体再生装置 |
GB0018296D0 (en) * | 2000-07-27 | 2000-09-13 | Chamings Ian | Computer aided mixing system |
JP4646099B2 (ja) | 2001-09-28 | 2011-03-09 | パイオニア株式会社 | オーディオ情報再生装置及びオーディオ情報再生システム |
JP2003123388A (ja) * | 2001-10-15 | 2003-04-25 | Pioneer Electronic Corp | 情報再生装置 |
-
2003
- 2003-09-24 JP JP2003332232A patent/JP3883995B2/ja not_active Expired - Lifetime
-
2004
- 2004-03-10 EP EP04251375A patent/EP1519361B1/en not_active Expired - Lifetime
- 2004-03-11 US US10/797,061 patent/US7251204B2/en active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPWO2008107994A1 (ja) * | 2007-03-08 | 2010-06-10 | パイオニア株式会社 | 情報再生装置及び方法、並びにコンピュータプログラム |
JP4861469B2 (ja) * | 2007-03-08 | 2012-01-25 | パイオニア株式会社 | 情報再生装置及び方法、並びにコンピュータプログラム |
Also Published As
Publication number | Publication date |
---|---|
EP1519361A1 (en) | 2005-03-30 |
US7251204B2 (en) | 2007-07-31 |
EP1519361B1 (en) | 2013-01-09 |
US20050063267A1 (en) | 2005-03-24 |
JP2005100521A (ja) | 2005-04-14 |
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