Phase reconstruction of spectrograms based on a model of repeated audio events

Paul Magron, Roland Badeau, Bertrand David

Tutkimustuotos: KonferenssiartikkeliTieteellinenvertaisarvioitu

2 Sitaatiot (Scopus)

Abstrakti

Phase recovery of modified spectrograms is a major issue in audio signal processing applications, such as source separation. This paper introduces a novel technique for estimating the phases of components in complex mixtures within onset frames in the Time-Frequency (TF) domain. We propose to exploit the phase repetitions from one onset frame to another. We introduce a reference phase which characterizes a component independently of its activation times. The onset phases of a component are then modeled as the sum of this reference and an offset which is linearly dependent on the frequency. We derive a complex mixture model within onset frames and we provide two algorithms for the estimation of the model phase parameters. The model is estimated on experimental data and this technique is integrated into an audio source separation framework. The results demonstrate that this model is a promising tool for exploiting phase repetitions, and point out its potential for separating overlapping components in complex mixtures.
AlkuperäiskieliEnglanti
OtsikkoWorkshop on Applications of Signal Processing to Audio and Acoustics
KustantajaIEEE
Sivumäärä5
ISBN (elektroninen)978-1-4799-7450-4
TilaJulkaistu - lokak. 2015
Julkaistu ulkoisestiKyllä
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisussa
TapahtumaIEEE Workshop on Applications of Signal Processing to Audio and Acoustics (WASPAA) - Mohonk Mountain House, New Paltz, Yhdysvallat
Kesto: 18 lokak. 201521 lokak. 2015

Conference

ConferenceIEEE Workshop on Applications of Signal Processing to Audio and Acoustics (WASPAA)
Maa/AlueYhdysvallat
KaupunkiNew Paltz
Ajanjakso18/10/1521/10/15

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