A Psychoacoustically Motivated

Psychoacoustically-motivated Dereverberation for Recordings Taken in the German Parliament

In this paper, we discuss the application of speech dereverberation techniques for post-processing of recordings taken in the German parliament. Based on a novel psychoacoustically-motivated dereverberation concept, a significant improvement in terms of the perceived quality is obtained in comparison to a conventional dereverberation approach. Since time-varying changes of the acoustical enviro...

Multi-channel psychoacoustically motivated speech enhancement

Multichannel techniques offer advantages in noise reduction and overall output signal quality when compared to the well studied mono approaches. In this paper we present an original multichannel psychoacoustically motivated noise reduction algorithm that naturally extends the single channel psychoacoustic masking filter previously studied in the literature [1]. The optimality criterion is desig...

Digital Vlsi-implementation of a Psychoacoustically and Physiologically Motivated Speech Preprocessor

A digital VLSI implementation of a psychoacoustically and psysiologically motivated preprocessing algorithm is introduced. The algorithm consists of several stages motivated by the signal processing in the human ear and was successfully applied to a wide range of applications by the Medical Physics Group at the University of Oldenburg. The processing scheme has been partitioned and will be impl...

Psychoacoustically-motivated adaptive β-order generalized spectral subtraction based on data-driven optimization

To mitigate the performance limitations caused by the constant spectral order β in the traditional spectral subtraction methods, we previously presented an adaptive β-order generalized spectral subtraction (GSS) in which the spectral order β is updated in a heuristic way [10]. In this paper, we propose a psychoacoustically-motivated adaptive β-order GSS, by considering that different frequency ...

Reduction of Loudspeaker Polar Response Aberrations Using Psychoacoustically Motivated Adaptive 3904 (L-4) Sub-Band Algorithms

A psychoacoustic approach to combined acoustic echo cancellation and noise reduction

This paper presents and compares algorithms for combined acoustic echo cancellation and noise reduction for hands-free telephones. A structure is proposed, consisting of a conventional acoustic echo canceler and a frequency domain postfilter in the sending path of the hands-free system. The postfilter applies the spectral weighting technique and attenuates both the background noise and the resi...