Title :
The skipping technique: a simple and fast algorithm to find the pitch in CELP vocoder
Author :
Lee, Joohun ; Bae, MyungJin ; Ann, Souguil ; Hahyoung You
Author_Institution :
Dept. of Electron. Eng., Seoul Nat. Univ., South Korea
Abstract :
A fast pitch search algorithm using skipping technique is an efficient method of reducing the computation complexity of pitch search while maintaining a good speech quality in a CELP vocoder. The skipping technique also improves the computation reduction efficiency of conventional fast pitch search methods such as the delta search method by combining with them. Compared with the traditional full search method, the skipping technique combined with the conventional delta search method can reduce the computation time for a pitch search by over 60% with a quality degradation of only 0.57 dB
Keywords :
computational complexity; linear predictive coding; search problems; speech coding; speech intelligibility; vocoders; CELP vocoder; computation complexity reduction; computation reduction efficiency; delta search method; fast pitch search algorithm; fast pitch search methods; skipping technique; speech quality; Bit rate; Computational complexity; Degradation; Filters; Search methods; Speech coding; Speech synthesis; Telecommunication computing; Very large scale integration; Vocoders;
Conference_Titel :
Military Communications Conference, 1995. MILCOM '95, Conference Record, IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-2489-7
DOI :
10.1109/MILCOM.1995.483698
