DocumentCode
3000265
Title
An improved modulo-PCM speech encoder with an imbedded vector quantizer
Author
Ramamoorthy, V.
Author_Institution
DSP Technology Corporation, Texas, USA
Volume
11
fYear
1986
fDate
31503
Firstpage
2395
Lastpage
2398
Abstract
The Modulo-PCM (MPCM) coder works very well at medium and high bit rates, but its performance is poor at 16 kbs or less. The reason for this is the poor quantization of the fractional part and the resulting noise accumulation in the prediction loop at the decoder. In this paper, we suggest a remedy to this problem by imbedding a vector quantizer. Our scheme is simple and efficient.
Keywords
1f noise; Bit rate; Data compression; Decoding; Digital signal processing; Knowledge based systems; Quantization; Signal design; Speech; Transform coding;
fLanguage
English
Publisher
ieee
Conference_Titel
Acoustics, Speech, and Signal Processing, IEEE International Conference on ICASSP '86.
Type
conf
DOI
10.1109/ICASSP.1986.1168704
Filename
1168704
Link To Document