Application of Binaural Models to Evaluate “Beamforming” in Digital Hearing AIDS

Noise Reduction Results of an Adaptive Filtering Technique for Dual-Microphone Behind-the-Ear Hearing Aids

“…The Audallion platform has been used before in other wearable DSP implementation, as the Audallion Beamformer, which was used for cochlear implant users. However, our beamformer strategy differed from the strategy used in the Audallion Beamformer (Schweitzer, Terry & Grim, 1996;Schweitzer, 1997;Figueiredo, Abel & Papsin, 2001). The Audallion was connected to a BTE hearing aid and allowed the processing of two microphone signals with a DSP combined with a 16 bit analog-to-digital and digital-to-analog converter.…”

Development of Digital Hearing Aids

“…An example of how a binaural processing system with a simple ear-mounted array might be used in a digital hearing aid is beaniforming. A beamforming hearing aid system makes rapid computations of the phase and magnitude differences arriving at the two ears, and attempts to selectively attenuate regions not forward of the head (Schweitzer, 1997b). This concept is illustrated in Figure 21.…”