Title :
Joint position and amplitude search of algebraic multipulses
Author :
Ramírez, Miguel Arjona ; Gerken, Max
Author_Institution :
Dept. of Electron. Eng., Sao Paulo Univ., Brazil
fDate :
9/1/2000 12:00:00 AM
Abstract :
A joint position and amplitude search algorithm is proposed for algebraic multipulse codebooks to be used in code-excited linear predictive (CELP) coders. The joint search complexity is below one quarter that of the focused search and ranks below those of the G.729A and IS-641-A coders. Listening tests indicate an equivalence in perceived quality
Keywords :
computational complexity; linear predictive coding; search problems; speech coding; CELP; algebraic multipulses; code-excited linear predictive coders; codebooks; joint position amplitude search; joint search complexity; listening tests; perceived quality; Autocorrelation; Code standards; Codecs; Filters; Floating-point arithmetic; Measurement standards; Speech coding; Testing; Writing;
Journal_Title :
Speech and Audio Processing, IEEE Transactions on
