Article

Speech Enhancement for Hearing Aids using a Combination of Binaural and Periodicity Features (vor Ort)

* Presenting author
Day / Time: 23.03.2022, 16:40-17:00
Room: 57-04
Typ: Regulärer Vortrag
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Abstract:

Developing adaptive algorithms in hearing devices is essential for improving speech enhancement in challenging acoustic scenarios. Recent findings from auditory modeling (Josupeit and Hohmann, 2017) and audio signal processing (Chen and Hohmann, 2015) suggest that periodicity filtering is a promising candidate to complement established speech enhancement techniques in noisy conditions.We propose to extend an existing approach by (Chen and Hohmann, 2015), in which monaural input signals are analysed with an auditory filterbank and filtered based on the periodicity features, for binaural signals by adding a cancellation mechanism and a binaural stage. The input signal is filtered based on a signal-to-noise ratio estimation using the periodicity features followed by a directional filter based on interaural time delays.Experimental results are shown using realistic speech signals with varying levels of background noise. The speech enhancement performance of the proposed binaural implementation of the periodicity filtering algorithm is compared with the monaural reference implementation using objective measures for noise reduction, speech quality, and intelligibility.

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