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Effect of auditory efferent time-constant duration on speech recognition in noise
Ifat Yasin1, Fangqi Liu2, Vit Drga1
1Department of Computer Science, University College London, 66-72 Gower Street, London WC1E 6BT, United Kingdom.
Abstract:
The human auditory efferent system may play a role in improving speech-in-noise recognition with an associated range of time constants. Computational auditory models with efferent-inspired feedback demonstrate improved speech-in-noise recognition with long efferent time constants (2000 ms). This study used a similar model plus an Automatic Speech Recognition (ASR) system to investigate the role of shorter time constants. ASR speech recognition in noise improved with efferent feedback (compared to no-efferent feedback) for both short and long efferent time constants. For some signal-to-noise ratios, speech recognition in noise improved as efferent time constants were increased from 118 to 2000 ms.
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