Title :
Evaluation of a 12 kbps speech codec for digital cellular radio
Author :
Maxwell, James H. ; Swaminathan, Kumar
Author_Institution :
AT&T Bell Lab., Holmdel, NJ, USA
Abstract :
A suitable metric to characterize subjective speech quality is the mean opinion score (MOS). For a given test condition, its subjective rating is obtained for every trail as a numeric value in the following manner: Unsatisfactory=1; Poor=2; Fair=3; Good=4; and Excellent=5. The arithmetic average of these ratings over all trails constitutes the MOS of the given test condition. The measurement of MOS and the subjective quality results obtained for a specific 12 kb/s subband coder are reported
Keywords :
cellular radio; codecs; digital communication systems; 12 kbit/s; digital cellular radio; mean opinion score; speech codec; subband coder; subjective speech quality; Bit rate; Digital systems; Fading; Laboratories; Land mobile radio cellular systems; Pollution measurement; Speech analysis; Speech codecs; Speech coding; Testing;
Conference_Titel :
Vehicular Technology Conference, 1988, IEEE 38th
Conference_Location :
Philadelphia, PA
DOI :
10.1109/VETEC.1988.195440
