Title :
An evaluation of 6.4 kbit/s speech codecs for Inmarsat-M system
Author_Institution :
Inmarsat, London, UK
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;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1991. ICASSP-91., 1991 International Conference on
Conference_Location :
Toronto, Ont.
Print_ISBN :
0-7803-0003-3
DOI :
10.1109/ICASSP.1991.150418
