Random wavelet representation of unvoiced speech

Author

D´Alessandro, Christophe ; Richard, Gaël

Author_Institution

LIMSI-CNRS, Orsay, France

fYear

1992

Firstpage

41

Lastpage

44

Abstract

The different types of speech noise are reviewed together with their first-order statistics. A theoretical framework is formulated for speech noise analysis in terms of time-frequency energy concentrations (spectral peaks, amplitude and phase modulation). This framework is based on the linear acoustic theory of speech production, and on the theory of random modulation. A synthesis scheme using random timed wavelets is proposed. It is based on the statistical properties of shot noise. Experimental results on synthesis of speech noise are given

Keywords

acoustic signal processing; random noise; speech analysis and processing; speech synthesis; statistical analysis; time-frequency analysis; wavelet transforms; AM; FM; amplitude modulation; first-order statistics; linear acoustic theory; phase modulation; random modulation; random timed wavelets; random wavelet representation; shot noise; spectral peaks; speech noise analysis; speech noise synthesis; speech production; statistical properties; time-frequency energy concentrations; unvoiced speech; Acoustic noise; Gaussian noise; Noise level; Noise shaping; Phase noise; Speech analysis; Speech enhancement; Speech synthesis; Statistics; Time frequency analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Time-Frequency and Time-Scale Analysis, 1992., Proceedings of the IEEE-SP International Symposium

Conference_Location

Victoria, BC

Print_ISBN

0-7803-0805-0

Type

conf

DOI

10.1109/TFTSA.1992.274238

Filename

274238