Title :
Real-time generation of narrow-band audio noise
Author :
Shlien, Seymour ; Lodge, John
Author_Institution :
Communication Res. Centre, Ottawa, Ont., Canada
fDate :
4/1/1996 12:00:00 AM
Abstract :
A technique for generating narrow-band Gaussian audio noise based on the implementation of the multirate filter is described. The technique allows modification of the bandwidth, central frequency, and amplitude of the noise in real time without interrupting the noise generator. The frequency spectrum of the noise has sharp cutoffs which meet the spectral sensitivities of the human auditory system.
Keywords :
Gaussian noise; audio coding; data compression; digital filters; noise generators; real-time systems; spectral analysis; Gaussian audio noise; amplitude; bandwidth; central frequency; frequency spectrum; human auditory system; multirate filter; narrow-band audio noise; noise generator; real-time generation; spectral sensitivities; Bandwidth; Distributed computing; Filtering; Finite impulse response filter; Frequency domain analysis; Gaussian noise; Low pass filters; Narrowband; Noise generators; Noise level;
Journal_Title :
Signal Processing Letters, IEEE
