Title :
A proposal of short time DFT syllabic compander and its configurations
Author :
Kishi, Masahichi ; Kozaki, Yasunari ; Koizumi, Manabu
Author_Institution :
Inf. Network Eng., AIT, Aichi, Japan
Abstract :
A short-time DFT (discrete Fourier transform) syllabic compander is proposed. Envelopes are detected by using the instantaneous spectrum instead of using the approximation of the AM demodulation. The short-time DFT compander is discussed with emphasis on operation in the frequency domain. Multirate sampling is employed to speed up analysis in the short-time DFT compander with almost no degradation
Keywords :
compandors; fast Fourier transforms; radio equipment; discrete Fourier transform; frequency domain; instantaneous spectrum; multirate sampling; radiocommunication; short-time DFT compander; syllabic compander; Clocks; Digital signal processing; Envelope detectors; Feedforward systems; Frequency domain analysis; Proposals; Research and development; Signal to noise ratio; Speech; Thermal degradation;
Conference_Titel :
Vehicular Technology Conference, 1991. Gateway to the Future Technology in Motion., 41st IEEE
Conference_Location :
St. Louis, MO
Print_ISBN :
0-87942-582-2
DOI :
10.1109/VETEC.1991.140491
