Title :
Optimization algorithm for the MP-MLQ excitation in G723.1 encoder
Author :
Negrescu, Cristian
Author_Institution :
Univ. Politehnica of Burcharest, Bucharest, Romania
Abstract :
It is known that the optimization algorithms of the excitations can be considered as one of the most difficult parts from a code excited linear prediction (CELP) based encoder. This paper presents an original detailed, rigorous and gradual analysis of the optimization algorithm for the MP-MLQ excitation, which characterizes the high-rate working mode of the ITU-T G723.1 encoder. The complete derivation of the algorithms presented here with various comments and accompanying explanations, allow an ordinary DSP programmer to efficiently implement and debug his encoding software.
Keywords :
data compression; linear predictive coding; maximum likelihood estimation; speech coding; CELP based encoder; DSP programmer; G723.1 encoder; ITU-T G723.1 encoder; MP-MLQ excitation; code excited linear prediction; high-rate working mode; multipulse maximum likelihood quantization; optimization algorithm; speech coding; transmitted speech; vocal signal compression; Algorithm design and analysis; Design optimization; Digital signal processing; Encoding; Filters; Programming profession; Pulse generation; Signal generators; Signal processing; Speech;
Conference_Titel :
Electronics, Circuits and Systems, 2002. 9th International Conference on
Print_ISBN :
0-7803-7596-3
DOI :
10.1109/ICECS.2002.1046419
