A Multichannel Subband Gsvd Based Approach for Speech Enhancement in Hearing Aids
نویسندگان
چکیده
The major goal of a noise reduction algorithm for hearing aid applications is to improve speech intelligibility. In [1], a multichannel noise reduction technique, based on a Generalized Singular Value Decomposition (GSVD) has been proposed. The GSVD based filter minimizes the Mean Square Error (MSE) between the desired signal portion in the received signals and a filtered sum of the received microphone signals. In this paper, we propose a subband implementation of the GSVD based filter. It is shown that in case of coloured signals the subband implementation improves intelligibility more than the fullband approach. In addition, a significant complexity reduction is achieved.
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