AN ADAPTIVE NOISE CANCELER FOR HEARING-AIDS USING 2 NEARBY MICROPHONES

An adaptive noise cancellation scheme based on two-stage adaptive filt ering as proposed by Van Compernolle [Proceedings of the IEEE internat ional Conference on Acoustics, Speech and Signal Processing (IEEE, New York, 1990)] was tested for two identical directional microphones mou nted in an endfire configuration within a single behind-the-ear (BTE) hearing aid. Speech intelligibility tests were carried out with two no rmal hearing subjects and three hearing aid users with moderate hearin g losses, in a realistic test environment using open set words and sen tences. A significant improvement, on average more than 5 dB, of speec h reception threshold (SRT) in background noise was obtained. (C) 1998 Acoustical Society of America.