Title :
Combined speech and audio coding by discrimination
Author :
Tancerel, Ludovic ; Ragot, Stéphane ; Ruoppila, Vesa T. ; Lefebvre, Roch
Author_Institution :
Dept. of Electr. Eng., Sherbrooke Univ., Que., Canada
Abstract :
We propose in this paper a general solution for combined speech and audio coding. Particularly, we describe a speech/music discrimination procedure for multi-mode wideband coding. The speech/music decision is updated only when a low-energy frame is detected, and kept unchanged otherwise. The signal is classified using second-order statistics of discriminant parameters. An experimental CELP/transform coder operating at 16 kbit/s is demonstrated. Results show improved performance when compared to single-mode encoding
Keywords :
audio coding; linear predictive coding; music; signal classification; speech coding; transform coding; 16 kbit/s; CELP/transform coder; combined speech/audio coding; discriminant parameters; low-energy frame; multi-mode wideband coding; second-order statistics; signal classifification; speech/music discrimination procedure; Audio coding; Bit rate; Delay estimation; Forward contracts; Linear predictive coding; Multiple signal classification; Speech coding; Statistics; Switches; Wideband;
Conference_Titel :
Speech Coding, 2000. Proceedings. 2000 IEEE Workshop on
Conference_Location :
Delavan, WI
Print_ISBN :
0-7803-6416-3
DOI :
10.1109/SCFT.2000.878435
