Title :
Pseudorandomly dithered quantisation of speech samples in p.c.m. transmission systems
Author :
Wood, R.G. ; Turner, L.F.
fDate :
5/1/1972 12:00:00 AM
Abstract :
The paper reports on an investigation of the application of variable-level quantisation in p.c.m.-type speech-transmission systems. Variable-level (dithered) quantisation systems are compared with normal fixed-level quantisation systems. The systems are compared using intelligibility tests and subjective-appreciation tests, and a statistical analysis of the results is given. The analysis indicates that, in general, normal quantisation is superior to dithered quantisation.
Keywords :
pulse-code modulation; speech intelligibility; telephone systems; 3040 Hz; assembly language computer programs; coding technique; dithered quantisation; intelligibility tests; pseudorandom number generators; pulse code modulation; real time simulation; speech; subjective appreciation tests; telephone quality speech transmission;
Journal_Title :
Electrical Engineers, Proceedings of the Institution of
DOI :
10.1049/piee.1972.0110
