Title :
On the sibilance problem in FM sound transmission
Author_Institution :
Dept. of Electr. & Electron. Eng., Stellenbosch Univ., South Africa
fDate :
8/30/1991 12:00:00 AM
Abstract :
The received sibilant sounds on FM transmission are often distorted because of portions of high amplitude values found in the Gaussian noiselike S´s which over-modulate the instantaneous frequency beyond the IF filter band for a moment, and then RF receiver noise is demodulated. Pre-emphasis makes the effect worse. The broadcast peak program meters do not indicate peaks in random signals. Hard limiting after pre-emphasis can relieve the problem
Keywords :
audio acoustics; frequency modulation; radio reception; FM transmission; RF receiver noise; hard limiting; instantaneous frequency; overmodulation; pre-emphasis; received sibilant sounds; Acoustic noise; Acoustical engineering; Amplitude modulation; Broadcasting; Filters; Frequency modulation; Gaussian noise; Humans; Noise level; Radio frequency;
Conference_Titel :
Communications and Signal Processing, 1991. COMSIG 1991 Proceedings., South African Symposium on
Conference_Location :
Pretoria
Print_ISBN :
0-7803-0040-8
DOI :
10.1109/COMSIG.1991.278214
