Sine-wave phase coding at low data rates

Author

Mcaulay, R.J. ; Quatieri, T.F.

Author_Institution

Lincoln Lab., MIT, Lexington, MA, USA

fYear

1991

fDate

14-17 Apr 1991

Firstpage

577

Abstract

In the context of a sinusoidal representation for speech waveforms, it is shown that synthetic speech of high quality can be obtained using a parametric model for the sine-wave phases, hence obviating the need to code the phases at low data rates. It was found that if a synthetic linear phase term was computed based on the time of occurrence of an artificially generated sequence of pitch pulses, then high-quality voiced speech reconstruction was possible. For unvoiced speech, the modeling study showed that the sine-wave phases were essentially uniformly distributed random variables

Keywords

encoding; speech analysis and processing; speech intelligibility; speech synthesis; low data rates; parametric model; pitch pulses; sine wave phase coding; sinusoidal representation; speech quality; speech synthesis; speech waveforms; synthetic speech; uniformly distributed random variables; unvoiced speech; voiced speech reconstruction; Cepstral analysis; Context modeling; Fourier transforms; Frequency measurement; Parametric statistics; Phase measurement; Pulse measurements; Quantization; Speech coding; Vocoders;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1991. ICASSP-91., 1991 International Conference on

Conference_Location

Toronto, Ont.

ISSN

1520-6149

Print_ISBN

0-7803-0003-3

Type

conf

DOI

10.1109/ICASSP.1991.150405

Filename

150405