A comparison of different methods for noise reduction in hearing aids
Jean-Baptiste Maj, Jan M Wouters, Marc Moonen · 2000
This paper presents a comparison of different methods for noise reduction in Behind-The-Ear (BTE) hearing aids with two microphones. In this work we study three microphone configurations. A first hearing aid (HA1) uses two omnidirectional microphones (2×HAO), a second hearing aid (HA2) uses, a directional microphone (HA2D), created with the dual microphone configuration, and one of both omnidirectional microphones (HAO), and a third (HA3) has a hardware directional (HA3D) and an omnidirectional microphone (HAO). With each hearing aid a two-stage adaptive beamformer (A2B) can be added. To make a comparison between different methods (HAO, HA2D, HA3D, HA1+A2B, HA2+A2B and HA3+A2B), we will measure directivity index (DI) and signal-to-noise ratio (SNR).