Title :
Evaluation of double sided periodic substitution (DSPS) method for recovering missing speech in packet voice communications
Author_Institution :
Twin Sun Inc., El Segundo, CA, USA
Abstract :
The author proposes a DSWS (double sides waveform substitution) method and a DSPS (double sides periodic substitution) for recovering missing speech. Recovering missing speech is an important problem in packet voice communications, since missing speech is a major impairment in packet network communications. The author investigates all estimation techniques for packets containing 16 ms of speech and takes comparison tests of each technique by a subjective test (opinion test) and an objective test (LPC spectral distortion). These tests indicated that the most effective estimation is the DSPS method, which extends the acceptable ratio of missing packets of 10% by the previous method, to 20% in the experimental results
Keywords :
packet switching; speech analysis and processing; voice communication; DSWS; LPC spectral distortion; double sides periodic substitution; double sides waveform substitution; missing speech; objective test; opinion test; packet network; packet voice communications; subjective test; Data communication; Delay; Digital signal processing; Intelligent networks; Linear predictive coding; Pattern matching; Speech analysis; Speech enhancement; Sun; Testing;
Conference_Titel :
Computers and Communications, 1991. Conference Proceedings., Tenth Annual International Phoenix Conference on
Conference_Location :
Scottsdale, AZ
Print_ISBN :
0-8186-2133-8
DOI :
10.1109/PCCC.1991.113848
