DE102004028720B3 - Apparatus and method for determining a key of an audio signal with music information - Google Patents

Apparatus and method for determining a key of an audio signal with music information Download PDF

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Publication number
DE102004028720B3
DE102004028720B3 DE200410028720 DE102004028720A DE102004028720B3 DE 102004028720 B3 DE102004028720 B3 DE 102004028720B3 DE 200410028720 DE200410028720 DE 200410028720 DE 102004028720 A DE102004028720 A DE 102004028720A DE 102004028720 B3 DE102004028720 B3 DE 102004028720B3
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DE
Germany
Prior art keywords
audio signal
key
determining
signal segment
ass2
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 - Fee Related
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DE200410028720
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German (de)
Inventor
Claas Derboven
Sebastian Streich
Markus Cremer
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Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
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Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
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Application filed by Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV filed Critical Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Priority to DE200410028720 priority Critical patent/DE102004028720B3/en
Priority to PCT/EP2005/002304 priority patent/WO2005122133A1/en
Application granted granted Critical
Publication of DE102004028720B3 publication Critical patent/DE102004028720B3/en
Expired - Fee Related legal-status Critical Current
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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
    • 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
    • G10H2210/081—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 automatic key or tonality recognition, e.g. using musical rules or a knowledge base

Abstract

Eine Vorrichtung (100) zum Bestimmen einer Tonart (114) eines Audiosignals (108) mit Musikinformationen umfasst eine Einrichtung (102) zum Definieren eines ersten Audiosignalsegments (ASS1) und eines zweiten Audiosignalsegments (ASS2), wobei sich das erste Audiosignalsegment (ASS1) und das zweite Audiosignalsegement (ASS2) überlappen und unterschiedliche Zeitdauern haben. Ferner umfasst die Vorrichtung (100) zum Bestimmen eine Einrichtung (104) zum Abschätzen einer Tonart für jedes Audiosignalsegment (ASS1, ASS2), um einen ersten Tonartschätzwert für das erste Audiosignalsegment (ASS1) und einen zweiten Tonartschätzwert für das zweite Audiosignalsegment (ASS2) zu erhalten. Außerdem hat die Vorrichtung (100) zum Bestimmen eine Einrichtung (106) zum Auswerten der Tonartschätzwerte (112), um auf der Basis des ersten Tonartschätzwertes und des zweiten Tonartschätzwertes die Tonart (114) des Audiosignals (108) zu bestimmen. Eine derartige Vorrichtung bietet den Vorteil, eine verbesserte zeitliche Auflösung bei der Bestimmung der Tonart eines Audiosignals zu ermöglichen.A device (100) for determining a key (114) of an audio signal (108) with music information comprises means (102) for defining a first audio signal segment (ASS1) and a second audio signal segment (ASS2), wherein the first audio signal segment (ASS1) and the second audio signal segment (ASS2) overlap and have different durations. Further, the means (100) for determining comprises means (104) for estimating a key for each audio signal segment (ASS1, ASS2), a first key estimate for the first audio signal segment (ASS1), and a second key estimate for the second audio signal segment (ASS2) receive. In addition, the means (100) for determining includes means (106) for evaluating the key estimates (112) to determine the key (114) of the audio signal (108) based on the first key estimate and the second key estimate. Such a device offers the advantage of enabling improved temporal resolution in determining the key of an audio signal.

DE200410028720 2004-06-14 2004-06-14 Apparatus and method for determining a key of an audio signal with music information Expired - Fee Related DE102004028720B3 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE200410028720 DE102004028720B3 (en) 2004-06-14 2004-06-14 Apparatus and method for determining a key of an audio signal with music information
PCT/EP2005/002304 WO2005122133A1 (en) 2004-06-14 2005-03-04 Device and method for determining the tonality of an audio signal comprising musical information

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200410028720 DE102004028720B3 (en) 2004-06-14 2004-06-14 Apparatus and method for determining a key of an audio signal with music information

Publications (1)

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DE102004028720B3 true DE102004028720B3 (en) 2005-10-20

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Family Applications (1)

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DE200410028720 Expired - Fee Related DE102004028720B3 (en) 2004-06-14 2004-06-14 Apparatus and method for determining a key of an audio signal with music information

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DE (1) DE102004028720B3 (en)
WO (1) WO2005122133A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006008260B3 (en) * 2006-02-22 2007-07-05 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Device for analysis of audio data, has semitone analysis device to analyze audio data with reference to audibility information allocation over quantity from semitone

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006008298B4 (en) 2006-02-22 2010-01-14 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for generating a note signal

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4354418A (en) * 1980-08-25 1982-10-19 Nuvatec, Inc. Automatic note analyzer
US5760325A (en) * 1995-06-15 1998-06-02 Yamaha Corporation Chord detection method and apparatus for detecting a chord progression of an input melody
JP2003263115A (en) * 2002-12-16 2003-09-19 Kureha Elastomer Co Ltd Method for protecting display screen

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3307156B2 (en) * 1995-04-24 2002-07-24 ヤマハ株式会社 Music information analyzer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4354418A (en) * 1980-08-25 1982-10-19 Nuvatec, Inc. Automatic note analyzer
US5760325A (en) * 1995-06-15 1998-06-02 Yamaha Corporation Chord detection method and apparatus for detecting a chord progression of an input melody
JP2003263115A (en) * 2002-12-16 2003-09-19 Kureha Elastomer Co Ltd Method for protecting display screen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006008260B3 (en) * 2006-02-22 2007-07-05 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Device for analysis of audio data, has semitone analysis device to analyze audio data with reference to audibility information allocation over quantity from semitone

Also Published As

Publication number Publication date
WO2005122133A1 (en) 2005-12-22

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8364 No opposition during term of opposition
R119 Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee