MusicSarreV3, PascalFrancis, Curation, bibRecord, 000005

Towards Timbre-Invariant Audio Features for Harmony-Based Music

Identifieur interne : 000005 ( PascalFrancis/Curation ); précédent : 000004; suivant : 000006

Towards Timbre-Invariant Audio Features for Harmony-Based Music

Auteurs : Meinard Müller [Allemagne] ; Sebastian Ewert [Allemagne]

Source :

IEEE transactions on audio, speech, and language processing [ 1558-7916 ] ; 2010.

RBID : Pascal:10-0137839

Descripteurs français

Pascal (Inist)
- Analyse son, Son musical, Recherche information, Invariance, Analyse discriminante, Analyse cepstrale, Tonie, Evaluation performance, Etat actuel, Extraction caractéristique, Timbre, Signal acoustique, Traitement signal.

English descriptors

KwdEn :
- Acoustic signal, Cepstral analysis, Discriminant analysis, Feature extraction, Information retrieval, Invariance, Musical sound, Performance evaluation, Pitch(acoustics), Signal processing, Sound analysis, State of the art, Timbre.

Abstract

Chroma-based audio features are a well-established tool for analyzing and comparing harmony-based Western music that is based on the equal-tempered scale. By identifying spectral components that differ by a musical octave, chroma features possess a considerable amount of robustness to changes in timbre and instrumentation. In this paper, we describe a novel procedure that further enhances chroma features by significantly boosting the degree of timbre invariance without degrading the features' discriminative power. Our idea is based on the generally accepted observation that the lower mel-frequency cepstral coefficients (MFCCs) are closely related to timbre. Now, instead of keeping the lower coefficients, we discard them and only keep the upper coefficients. Furthermore, using a pitch scale instead of a mel scale allows us to project the remaining coefficients onto the 12 chroma bins. We present a series of experiments to demonstrate that the resulting chroma features outperform various state-of-the art features in the context of music matching and retrieval applications. As a final contribution, we give a detailed analysis of our enhancement procedure revealing the musical meaning of certain pitch-frequency cepstral coefficients.

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C01	`01`		`ENG`	@0 Chroma-based audio features are a well-established tool for analyzing and comparing harmony-based Western music that is based on the equal-tempered scale. By identifying spectral components that differ by a musical octave, chroma features possess a considerable amount of robustness to changes in timbre and instrumentation. In this paper, we describe a novel procedure that further enhances chroma features by significantly boosting the degree of timbre invariance without degrading the features' discriminative power. Our idea is based on the generally accepted observation that the lower mel-frequency cepstral coefficients (MFCCs) are closely related to timbre. Now, instead of keeping the lower coefficients, we discard them and only keep the upper coefficients. Furthermore, using a pitch scale instead of a mel scale allows us to project the remaining coefficients onto the 12 chroma bins. We present a series of experiments to demonstrate that the resulting chroma features outperform various state-of-the art features in the context of music matching and retrieval applications. As a final contribution, we give a detailed analysis of our enhancement procedure revealing the musical meaning of certain pitch-frequency cepstral coefficients.
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C03	`02`	`X`	`FRE`	`@0 Son musical @5 02`
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C03	`06`	`3`	`FRE`	`@0 Analyse cepstrale @5 06`
C03	`06`	`3`	`ENG`	`@0 Cepstral analysis @5 06`
C03	`07`	`X`	`FRE`	`@0 Tonie @5 07`
C03	`07`	`X`	`ENG`	`@0 Pitch(acoustics) @5 07`
C03	`07`	`X`	`SPA`	`@0 Altura sonida @5 07`
C03	`08`	`X`	`FRE`	`@0 Evaluation performance @5 08`
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C03	`09`	`X`	`FRE`	`@0 Etat actuel @5 09`
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C03	`11`	`X`	`FRE`	`@0 Timbre @5 11`
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C03	`11`	`X`	`SPA`	`@0 Sello @5 11`
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N21				`@1 088`

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<front><div type="abstract" xml:lang="en">Chroma-based audio features are a well-established tool for analyzing and comparing harmony-based Western music that is based on the equal-tempered scale. By identifying spectral components that differ by a musical octave, chroma features possess a considerable amount of robustness to changes in timbre and instrumentation. In this paper, we describe a novel procedure that further enhances chroma features by significantly boosting the degree of timbre invariance without degrading the features' discriminative power. Our idea is based on the generally accepted observation that the lower mel-frequency cepstral coefficients (MFCCs) are closely related to timbre. Now, instead of keeping the lower coefficients, we discard them and only keep the upper coefficients. Furthermore, using a pitch scale instead of a mel scale allows us to project the remaining coefficients onto the 12 chroma bins. We present a series of experiments to demonstrate that the resulting chroma features outperform various state-of-the art features in the context of music matching and retrieval applications. As a final contribution, we give a detailed analysis of our enhancement procedure revealing the musical meaning of certain pitch-frequency cepstral coefficients.</div>
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   |area=    MusicSarreV3
   |flux=    PascalFrancis
   |étape=   Curation
   |type=    RBID
   |clé=     Pascal:10-0137839
   |texte=   Towards Timbre-Invariant Audio Features for Harmony-Based Music
}}

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	Serveur d'exploration sur la musique en Sarre
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Serveur d'exploration sur la musique en Sarre

Towards Timbre-Invariant Audio Features for Harmony-Based Music

Towards Timbre-Invariant Audio Features for Harmony-Based Music

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