Interspeech'2005 - Eurospeech

Lisbon, Portugal
September 4-8, 2005

Speech Enhancement Using Auditory Phase Opponency Model

Om Deshmukh, Carol Espy-Wilson

University of Maryland, USA

In this work we address the problem of single-channel speech enhancement when the speech is corrupted by additive noise. The model presented here, called the Modified Phase Opponency (MPO) model, is based on the auditory PO model, proposed by Carney et. al., for detection of tones in noise. The PO model includes a physiologically realistic mechanism for processing the information in neural discharge times and exploits the frequency-dependent phase properties of the tuned filters in the auditory periphery by using a cross-auditory-nerve-fiber coincidence detection for extracting temporal cues. Initial evaluation of the MPO model on speech corrupted by white noise at different SNRs shows that the MPO model is able to enhance the spectral peaks while suppressing the noise-only regions.

Full Paper

Bibliographic reference.  Deshmukh, Om / Espy-Wilson, Carol (2005): "Speech enhancement using auditory phase opponency model", In INTERSPEECH-2005, 2117-2120.