Title :
Random wavelet representation of unvoiced speech
Author :
D´Alessandro, Christophe ; Richard, Gaël
Author_Institution :
LIMSI-CNRS, Orsay, France
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;
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
DOI :
10.1109/TFTSA.1992.274238
