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Bücher Englische Bücher Wissen & Bildung Naturwissenschaft, Medizin, Informatik, Technik Technik Elektronik, Elektro- und Nachrichtentechnik Speech Enhancement in the STFT Domain
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Speech Enhancement in the STFT Domain
Jacob Benesty, Jingdong Chen, Emanuël A.P. Habets (Taschenbuch, Englisch)
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Beschreibung
This work addresses this problem in the short-time Fourier transform (STFT) domain. We divide the general problem into five basic categories depending on the number of microphones being used and whether the interframe or interband correlation is considered. The first category deals with the single-channel problem where STFT coefficients at different frames and frequency bands are assumed to be… independent. In this case, the noise reduction filter in each frequency band is basically a real gain. Since a gain does not improve the signal-to-noise ratio (SNR) for any given subband and frame, the noise reduction is basically achieved by liftering the subbands and frames that are less noisy while weighing down on those that are more noisy. The second category also concerns the single-channel problem. The difference is that now the interframe correlation is taken into account and a filter is applied in each subband instead of just a gain. The advantage of using the interframe correlation is that we can improve not only the long-time fullband SNR, but the frame-wise subband SNR as well. The third and fourth classes discuss the problem of multichannel noise reduction in the STFT domain with and without interframe correlation, respectively. In the last category, we consider the interband correlation in the design of the noise reduction filters. We illustrate the basic principle for the single-channel case as an example, while this concept can be generalized to other scenarios. In all categories, we propose different optimization cost functions from which we derive the optimal filters and we also define the performance measures that help analyzing them. 53,49 €
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Technische Daten
Erscheinungsdatum
16.09.2011
Sprache
Englisch
EAN
9783642232497
Herausgeber
Springer Berlin
Serien- oder Bandtitel
SpringerBriefs in Electrical and Computer Engineering
Sonderedition
Nein
Autor
Jacob Benesty, Jingdong Chen, Emanuël A.P. Habets
Seitenanzahl
109
Auflage
1
Einbandart
Taschenbuch
Schlagwörter
Speech enhancement, Wiener filter, linearly constrained minimum variance (LCMV) filter, maximum signal-to-noise ratio (SNR) filter, microphone arrays, minimum variance distortionless response (MVDR) filter, prediction filter, short-time Fourier transform (STFT) domain, single-channel and multichannel, tradeoff filter
Thema-Inhalt
TJF - Elektronik
UYS - Digitale Signalverarbeitung (DSP)
PBKF - Funktionalanalysis und Abwandlungen
TTA - Akustik und Tontechnik
UYA - Theoretische Informatik
Höhe
235 mm
Breite
15.5 cm
Transparenz & Sicherheit
Hersteller: Springer, Europaplatz 3, Heidelberg, Deutschland, 69115, ProductSafety@springernature.com, Springer Nature Customer Service Center GmbH
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