Speech Coding Demonstrations

The following demonstrates the speech/music quality obtained after one stage of encoding and decoding through the specified speech codec
Click on the "Click Here" legend in each cell to listen to the underlying speech or music file.
 
Speech Codec
Male Speaker
Female Speaker
Music
Original Speech/Music
(16-bit sampled at 8KHz)
Click Here
Click Here
Click Here
FS-1015 (LPC-10e 2.4 kb/s)
Click Here
Click Here
Click Here
FS-1016(CELP 4.8 kb/s)
Click Here
Click Here
Click Here
G.721 (32 kb/s ADPCM)
Click Here
Click Here
Click Here
G.728 (16 kb/s LD-CELP)
Click Here
Click Here
Click Here
GSM Full-Rate ( 13 kb/s RPE-LTP)
Click Here
Click Here
Click Here
GSM Enhanced Full-Rate (13 kb/s )
Click Here
Click Here
Click Here
GSM Half-Rate ( VSELP 5.6 kb/s)
Click Here
Click Here
Click Here
IS-54 ( VSELP 7.95 kb/s)
Click Here
Click Here
Click Here
Sinusoidal Transform Coder (2.4 kbps)
Click Here
Click Here
Click Here
Sinusoidal Transform Coder
(4.8kbps)
Click Here
Click Here
Click Here
EVRC
(Variable Rate 0.8 kbps to 8 kbps)
Click Here
Click Here
Click Here
Original Speech/Music for G.722 (16-bit sampled at 16 KHz))
Click Here
Click Here
Click Here
G.722 (48 kb/s Audio Codec)
Click Here
Click Here
Click Here
G.722 (56 kb/s Audio Codec)
Click Here
Click Here
Click Here
G.722 (64 kb/s Audio Codec)
Click Here
Click Here
Click Here

Please send your comments to Dr. Andreas Spanias.

Back to the ASU Speech Coding Research Page

Page Last Updated by Ted Painter on 9th June 1998.