Speech enhancement using sub-band adaptive Griffiths--Jim signal processing
Speech Communication - Special issue on speech processing for hearing aids
IEEE Transactions on Signal Processing
Robust distributed noise reduction in hearing aids with external acoustic sensor nodes
EURASIP Journal on Advances in Signal Processing - Special issue on digital signal processing for hearing instruments
Theoretical analysis of binaural multimicrophone noise reduction techniques
IEEE Transactions on Audio, Speech, and Language Processing
Model-based dereverberation preserving binaural cues
IEEE Transactions on Audio, Speech, and Language Processing - Special issue on processing reverberant speech: methodologies and applications
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In this contribution, a dual-channel input-output speech enhancement system is introduced. The proposed algorithm is an adaptation of the well-known superdirective beamformer including postfiltering to the binaural application. In contrast to conventional beamformer processing, the proposed system outputs enhanced stereo signals while preserving the important interaural amplitude and phase differences of the original signal. Instrumental performance evaluations in a real environment with multiple speech sources indicate that the proposed computational efficient spectral weighting system can achieve significant attenuation of speech interferers while maintaining a high speech quality of the target signal.