WO2007072394A3 - Audio structure analysis - Google Patents
Audio structure analysis Download PDFInfo
- Publication number
- WO2007072394A3 WO2007072394A3 PCT/IB2006/054915 IB2006054915W WO2007072394A3 WO 2007072394 A3 WO2007072394 A3 WO 2007072394A3 IB 2006054915 W IB2006054915 W IB 2006054915W WO 2007072394 A3 WO2007072394 A3 WO 2007072394A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- energy
- similarity
- determining
- determined
- selecting
- Prior art date
Links
- 230000011218 segmentation Effects 0.000 abstract 1
Classifications
-
- 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
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/48—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use
-
- 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
-
- 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
- G10H2220/00—Input/output interfacing specifically adapted for electrophonic musical tools or instruments
- G10H2220/021—Indicator, i.e. non-screen output user interfacing, e.g. visual or tactile instrument status or guidance information using lights, LEDs, seven segments displays
- G10H2220/081—Beat indicator, e.g. marks or flashing LEDs to indicate tempo or beat positions
-
- 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
- G10H2250/00—Aspects of algorithms or signal processing methods without intrinsic musical character, yet specifically adapted for or used in electrophonic musical processing
- G10H2250/131—Mathematical functions for musical analysis, processing, synthesis or composition
- G10H2250/135—Autocorrelation
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Computational Linguistics (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Auxiliary Devices For Music (AREA)
- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
Abstract
A device (1) for determining accented beats in a music signal (x[n]) comprises: energy determination means (12) for determining the energy (E[n]; E[k]) of the music signal (x[n]), - segmentation means (15) for segmenting the energy on the basis of a tempo estimate (T), similarity determination means (17) for determining the similarity between the energy (E[n]; E[k]) of segments, and selecting means (18) for selecting the segment having the smallest similarity as the segment containing an accented beat. The tempo estimate (T) may be determined by external means. The energy may be determined in the time domain or in a transform domain. The similarity may be determined using cross-correlation, entropy or a distance measure. The device (1) may advantageously be used in AutoDJ apparatus.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05112778 | 2005-12-22 | ||
EP05112778.5 | 2005-12-22 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2007072394A2 WO2007072394A2 (en) | 2007-06-28 |
WO2007072394A3 true WO2007072394A3 (en) | 2007-10-18 |
Family
ID=38137441
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2006/054915 WO2007072394A2 (en) | 2005-12-22 | 2006-12-18 | Audio structure analysis |
Country Status (1)
Country | Link |
---|---|
WO (1) | WO2007072394A2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101740013A (en) * | 2008-11-21 | 2010-06-16 | 索尼株式会社 | Information processing apparatus, sound analysis method, and program |
CN101740010B (en) * | 2008-11-21 | 2012-12-26 | 索尼株式会社 | Information processing device, sound analyzing method |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007036846A2 (en) * | 2005-09-30 | 2007-04-05 | Koninklijke Philips Electronics N.V. | Method and apparatus for automatic structure analysis of music |
DE102009031673A1 (en) * | 2009-02-13 | 2010-08-26 | Kajetan Dvoracek | Method for determining clock speed of electrical signals for e.g. pulse frequency-oriented sports activity, involves supplementing maximum value if necessary, and determining clock speed of piece of music from period values |
CN104217729A (en) | 2013-05-31 | 2014-12-17 | 杜比实验室特许公司 | Audio processing method, audio processing device and training method |
CN108320730B (en) * | 2018-01-09 | 2020-09-29 | 广州市百果园信息技术有限公司 | Music classification method, beat point detection method, storage device and computer device |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6316712B1 (en) * | 1999-01-25 | 2001-11-13 | Creative Technology Ltd. | Method and apparatus for tempo and downbeat detection and alteration of rhythm in a musical segment |
US6542869B1 (en) * | 2000-05-11 | 2003-04-01 | Fuji Xerox Co., Ltd. | Method for automatic analysis of audio including music and speech |
US20050211072A1 (en) * | 2004-03-25 | 2005-09-29 | Microsoft Corporation | Beat analysis of musical signals |
-
2006
- 2006-12-18 WO PCT/IB2006/054915 patent/WO2007072394A2/en active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6316712B1 (en) * | 1999-01-25 | 2001-11-13 | Creative Technology Ltd. | Method and apparatus for tempo and downbeat detection and alteration of rhythm in a musical segment |
US6542869B1 (en) * | 2000-05-11 | 2003-04-01 | Fuji Xerox Co., Ltd. | Method for automatic analysis of audio including music and speech |
US20050211072A1 (en) * | 2004-03-25 | 2005-09-29 | Microsoft Corporation | Beat analysis of musical signals |
Non-Patent Citations (2)
Title |
---|
GOTO M ET AL: "Real-time beat tracking for drumless audio signals: Chord change detection for musical decisions", SPEECH COMMUNICATION, ELSEVIER SCIENCE PUBLISHERS, AMSTERDAM, NL, vol. 27, no. 3-4, April 1999 (1999-04-01), pages 311 - 335, XP004163257, ISSN: 0167-6393 * |
SCHEIRER ERIC D: "Tempo and beat analysis of acoustic musical signals", JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, AIP / ACOUSTICAL SOCIETY OF AMERICA, MELVILLE, NY, US, vol. 103, no. 1, January 1998 (1998-01-01), pages 588 - 601, XP012000051, ISSN: 0001-4966 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101740013A (en) * | 2008-11-21 | 2010-06-16 | 索尼株式会社 | Information processing apparatus, sound analysis method, and program |
CN101740013B (en) * | 2008-11-21 | 2012-12-26 | 索尼株式会社 | Information processing apparatus, sound analysis method |
CN101740010B (en) * | 2008-11-21 | 2012-12-26 | 索尼株式会社 | Information processing device, sound analyzing method |
Also Published As
Publication number | Publication date |
---|---|
WO2007072394A2 (en) | 2007-06-28 |
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