Title :
Sinewave-based phase dispersion for audio preprocessing
Author :
Quatieri, Thomas F. ; McAulay, Robert J.
Author_Institution :
Lincoln Lab., MIT, Lexington, MA, USA
Abstract :
A sinusoidal-based analysis/synthesis system is used to apply radar signal design solutions to the problem of dispersing the phase of a speech waveform. Integrated with dynamic range compression, the resulting system can give a significant reduction in peak/RMS ratio with acceptable loss in quality. The spectral information in the resulting processed speech waveform is embedded primarily within the zero crossings of the modified waveform, rather than the waveform shape. Consequently, this dispersion technique also serves as a preprocessor for waveform clipping, allowing considerably deeper thresholding than can be tolerated on the original waveform
Keywords :
radar theory; speech analysis and processing; speech synthesis; audio preprocessing; dynamic range compression; peak/RMS ratio; radar signal; sinewave based phase dispersion; sinusoidal-based analysis/synthesis system; spectral information; speech waveform; thresholding; waveform clipping; zero crossings; Dynamic range; Filters; Frequency estimation; Radar; Radio transmitters; Signal design; Signal synthesis; Sociotechnical systems; Speech analysis; Speech synthesis;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1988. ICASSP-88., 1988 International Conference on
Conference_Location :
New York, NY
DOI :
10.1109/ICASSP.1988.197166
