Constrained Bptimum Filtering for Multi-Microphone Digital Hearing Aids
M.W. Hoffman, K.M. Buckley · 2005
An adaptive digital spatial filter is applied to a multiple microphone array which will be used as a hearing aid input. Models are employed to accurately reflect the effects of acoustic headshadow on the microphone array. Robust constraints are applied to a minimum variance cost function and simulated under a variety of optimum (non-adaptive) processing scenarios. Promising results for some of the methods evaluated are presented.