An evaluation of 6.4 kbit/s speech codecs for Inmarsat-M system

Author

Wong, Siu-Wah

Author_Institution

Inmarsat, London, UK

fYear

1991

fDate

14-17 Apr 1991

Firstpage

629

Abstract

The evaluation process conducted by Inmarsat in an attempt to find a suitable 6.4-kb/s voice coding algorithm for the newly developed Inmarsat-M system is described. Seven candidate codecs were submitted, and they were evaluated on the basis of speech intelligibility, robustness to random errors and bursty errors in fading channels, resilience to background acoustic and line noise, effect on nonlinear microphones, algorithm complexity, and speak recognition. The test results are presented

Keywords

codecs; digital radio systems; encoding; mobile radio systems; satellite relay systems; speech analysis and processing; speech intelligibility; 6.4 kbit/s; Inmarsat-M system; algorithm complexity; background acoustic noise; bursty errors; digital radio systems; fading channels; line noise; mobile radio systems; nonlinear microphones; random errors; speak recognition; speech codecs; speech intelligibility; test results; voice coding algorithm; Acoustic noise; Background noise; Fading; Microphones; Noise robustness; Nonlinear acoustics; Resilience; Speech analysis; Speech codecs; Speech enhancement;

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.1991.150418

Filename

150418