Title :
Two microphone nonlinear frequency domain beamformer for hearing aid noise reduction
Author_Institution :
Audiologic, Boulder, CO, USA
Abstract :
A two microphone beamforming algorithm for hearing aid noise reduction is described. The algorithm is based on a short time Fourier transform analysis/synthesis system with nonlinear frequency domain adaptive filtering. The algorithm has been implemented on a portable battery powered device. Subjective ratings and BKB sentence scores for a group of hearing aid wearers are reported
Keywords :
Fourier transforms; acoustic noise; acoustic signal processing; adaptive filters; adaptive signal processing; digital filters; filtering theory; hearing aids; microphones; noise abatement; BKB sentence scores; STFT analysis/synthesis system; hearing aid noise reduction; microphone beamforming algorithm; nonlinear frequency domain adaptive filtering; portable battery powered device; short time Fourier transform; subjective ratings; two microphone nonlinear frequency domain beamformer; Adaptive filters; Algorithm design and analysis; Array signal processing; Auditory system; Batteries; Filtering algorithms; Fourier transforms; Frequency domain analysis; Microphones; Noise reduction;
Conference_Titel :
Applications of Signal Processing to Audio and Acoustics, 1995., IEEE ASSP Workshop on
Conference_Location :
New Paltz, NY
Print_ISBN :
0-7803-3064-1
DOI :
10.1109/ASPAA.1995.482905
