Title :
High quality multi-pulse speech coder with pitch prediction
Author :
Ozawa, Kazunori ; Araseki, Takashi
Author_Institution :
NEC Corporation, Kawasaki, Japan
Abstract :
This paper describes multi-pulse speech coding with pitch prediction. Two realization approaches to the coding, which differ in regard to pitch predictor, are described. Coding performances for the two approaches are evaluated objectively and subjectively. The introduction of pitch prediction to a multipulse coder shows 2-3 dB SNR (Signal to Noise Ratio) improvement, and perceptually annoying noise is reduced over a conventional coder without pitch prediction, at bit rates above 8 kbps.
Keywords :
Bit rate; Filters; Linear predictive coding; Noise reduction; Proposals; Signal synthesis; Signal to noise ratio; Speech analysis; Speech coding; Speech synthesis;
Conference_Titel :
Acoustics, Speech, and Signal Processing, IEEE International Conference on ICASSP '86.
DOI :
10.1109/ICASSP.1986.1169256