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SX7300P
Speech Codecs

The following is an abbreviated list of the features supported in the SX7300P speech codec. For a comprehensive list, please contact Agora Labs directly.


Parameter Value
Bit Rat 7300 bps
Sampling Rate 8000 Hz.
Frame Size 15 milliseconds
Look Ahead 5 milliseconds
Processing Requirements 14% of 100 MHz Intel Pentium™



Performance:
The following subjective speech quality measurements were obtained from tests carried out by COMSAT Laboratories, Clarksburg, Maryland in August 1995. The full Report on these tests was submitted to the ITU SG15 at the Geneva Meeting, November 13-24, 1995. (For these tests, the frame reconstruction algorithm in the SX7300P was not in use).



Mean Opinion Score (MOS)
 
Test Conditions
 
G.726 (Toll Quality)
MOS
SX7300P
MOS
G.729 Annex A
MOS
Error Free 3.6 3.5 3.7
3% Frame Erasures - 3.1 3.2
5% Frame Erasures - 2.8 2.8