DocumentCode
2826941
Title
A digitally codec for speech with higher order predictor
Author
Nasr, Mohamed E M ; Zakhary, M.A.
Author_Institution
Dept. of Electron., Tech. Coll., Dammam, Saudi Arabia
fYear
1991
fDate
11-14 Jun 1991
Firstpage
336
Abstract
The authors introduce an efficient digital codec which uses a higher-order predictor. Four types of adaptive delta modulation (DM) algorithms have been used: HCDM, HCFIDM (hybrid constant factor incremental delta modulation), HSVADM, and MSHCDM. A detailed algorithm and computer simulation studies for the proposed system under various conditions are presented. Signal-to-noise ratio computation for three types of input signals indicates that the proposed scheme is superior to the normal hybrid DM. Effects of channel errors have been studied and the system is found to tolerate error rates on the order of 10-3 and 10-2
Keywords
codecs; encoding; speech analysis and processing; ADM; HCDM; HCFIDM; HSVADM; MSHCDM; SNR computation; adaptive delta modulation; channel errors; computer simulation studies; digital codec; error rate tolerance; higher order predictor; hybrid DM; input signals; Bit rate; Decoding; Delta modulation; Dynamic range; Prediction algorithms; Quantization; Sampling methods; Speech codecs; Tiles;
fLanguage
English
Publisher
ieee
Conference_Titel
Circuits and Systems, 1991., IEEE International Sympoisum on
Print_ISBN
0-7803-0050-5
Type
conf
DOI
10.1109/ISCAS.1991.176342
Filename
176342
Link To Document