Title :
Recursive and adaptive predictive coding of speech
Author :
Nakata, Kazuo ; Higure, Kin-ich
Author_Institution :
Dept. of Electron., Chiba Inst. of Technol., Narashino, Japan
Abstract :
A new algorithm of speech coding “recursive and adaptive prediction” is proposed and tested. An adaptive linear prediction of the input is carried out sample by sample, and only predictive residuals are quantized and transmitted in binary codes. Predictive coefficients are adaptively controlled by quantized prediction error. Segmental SNR of almost 22 dB is obtained at 16 kb/s by the cascade connection of 2 stages of prediction. The algorithm can handle mixed voices and be implemented by single DSP
Keywords :
adaptive codes; decoding; linear predictive coding; quantisation (signal); speech coding; speech processing; 16 kbit/s; adaptive linear prediction; binary codes; cascade connection; mixed voices; predictive coefficients; predictive residuals; quantized prediction error; recursive and adaptive prediction coding; segmental SNR; single DSP; speech coding; Binary codes; Bit rate; Delay effects; Digital signal processing; Error correction codes; Prediction algorithms; Predictive coding; Quantization; Speech coding; Testing;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1997. ICASSP-97., 1997 IEEE International Conference on
Conference_Location :
Munich
Print_ISBN :
0-8186-7919-0
DOI :
10.1109/ICASSP.1997.598835
