Title :
A high-quality 8 kbps multi-pulse coder using a single TMS320C25
Author :
Chan, C.F. ; Law, K.W.
Author_Institution :
City Polytech. of Hong Kong, Hong Kong
Abstract :
A real-time implementation of an 8 kbps high-quality multi-pulse coder on a single chip DSP is given. The coder employs a new multi-pulse analysis structure which allows a fast algorithm to be used for calculating the cross-correlation between the input speech and the impulse response of the LPC filter. A fast algorithm for searching the pulse information is given. A simple and fast coding scheme for packing the pulse positions to low data rates is also addressed
Keywords :
digital signal processing chips; encoding; speech analysis and processing; 8 kbit/s; LPC filter; TMS320C25 chip; cross-correlation; fast algorithm; impulse response; input speech; linear predictive coding; low data rates; multipulse analysis structure; multipulse coder; pulse positions; single chip DSP; speech coding;
Conference_Titel :
Digital Processing of Signals in Communications, 1991., Sixth International Conference on
Conference_Location :
Loughborough
Print_ISBN :
0-85296-522-2
