Objective evaluations of two-stage binaural speech enhancement with Wiener filter for speech enhancement and sound localization
Abstract
For high-quality speech communication, we previously proposed a two-stage binaural speech enhancement with Wiener lter (TS-BASE/WF) approach inspired by the equalization-cancellation (EC) theory, to suppress interfering signals and preserve impression of acoustic scene. In the proposed TS-BASE/ WF, the interfering signal is rst estimated by equalizing and cancelling the target signal through two equalizers and a time-variant Wiener filter is then applied to enhance the target signal given the noisy mixture signals. In this paper, we pay main attention to the comprehensive experimental evaluations on its speech-enhancement performance and its ability in preserving binaural bene ts in a variety of acoustic conditions. Experimental results show that the TS-BASE/WF approach is able to suppress non-stationary multiple interfering signals and enhance the target signal which is expected to improve the quality of speech communication, and succeeds in preserving the binaural cues which is expected to give birth to the perceptual impression of the auditory scene, in all tested spatial scenarios.
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