DocumentCode
388563
Title
A 16kbps APC codec using digital signal processors
Author
Tanaka, S. ; Wake, Y. ; Araseki, T. ; Sato, T. ; Kage, K.
Author_Institution
Nippon Electric Company, Tokyo, Japan
Volume
9
fYear
1984
fDate
30742
Firstpage
461
Lastpage
464
Abstract
A compact 16kbps speech codec for digital radio communications was developed using three NEC signal processor LSI chips. Adaptive Predictive Coding (APC) with variable length coding for residual signal was employed in the codec. Additional functions for communications such as error correction and frame synchronization were also included. Actual board size for the half duplex codec is 9 × 15 cm. A 20.5 dB segmental SN ratio was obtained.
Keywords
Digital communication; Digital signal processing chips; Digital signal processors; Error correction; Hardware; Linear predictive coding; Mobile communication; National electric code; Predictive coding; Speech codecs;
fLanguage
English
Publisher
ieee
Conference_Titel
Acoustics, Speech, and Signal Processing, IEEE International Conference on ICASSP '84.
Type
conf
DOI
10.1109/ICASSP.1984.1172495
Filename
1172495
Link To Document