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A method of speech periodicity enhancement based on transform-domain signal decomposition
KTH, School of Electrical Engineering (EES), Sound and Image Processing (Closed 130101).
2010 (English)In: 18th European Signal Processing Conference (EUSIPCO-2010), EUROPEAN ASSOC SIGNAL SPEECH & IMAGE PROCESSING-EURASIP , 2010, 984-988 p.Conference paper (Refereed)
Abstract [en]

Periodicity is an important property of speech signals. It plays a critical role in speech communication, especially when strong background noise is present. This paper presents a novel framework of periodicity enhancement for noisy speech. The enhancement operates on the linear prediction error (residual) signal. The residual signal goes through a constant-pitch time warping process and two sequential lapped frequency transforms, by which the periodic component is concentrated in the first modulation band. By emphasizing the respective transform coefficients, periodicity enhancement of noisy residual signal is achieved. The enhanced residual signal and estimated linear prediction filter parameters are used to synthesize the speech output. The effectiveness of the proposed method is confirmed consistently by various objective measures and subjective listening tests. It is observed that the enhanced speech can restore the harmonic structure of the original speech.

Place, publisher, year, edition, pages
, European Signal Processing Conference, ISSN 2219-5491
Keyword [en]
Background noise, Frequency transform, Harmonic structures, Linear prediction, Linear prediction filter, Noisy speech, Objective measure, Periodic components, Residual signals, Signal decomposition, Speech output, Speech signals, Subjective listening test, Time warping, Transform coefficients, Transform domain, Electrical engineering, Signal processing
National Category
Signal Processing
URN: urn:nbn:se:kth:diva-150286ISI: 000349999100199ScopusID: 2-s2.0-84863803765OAI: diva2:742954
18th European Signal Processing Conference, EUSIPCO 2010, 23 August 2010 through 27 August 2010, Aalborg, Denmark

QC 20140903

Available from: 2014-09-03 Created: 2014-09-01 Last updated: 2015-12-07Bibliographically approved

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Kleijn, W. Bastiaan
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Sound and Image Processing (Closed 130101)
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