Publications – Details
Near End Listening Enhancement by Means of Warped Low Delay Filter-Banks
- Authors:
- Bastian Sauert, Heinrich W. Löllmann, and Peter Vary
- Book Title:
- ITG-Fachtagung Sprachkommunikation
- Venue:
- Aachen, Germany
- Event Date:
- 8.-10.10.2008
- Publisher:
- VDE Verlag GmbH
- Location:
- Berlin, Germany
- Date:
- Oct. 2008
- ISBN:
- 978-3-80073-120-6
- ISSN:
- 0341-0196
- Language:
- English
Abstract
The concept of near end listening enhancement has been proposed for improving the speech intelligibility of telecommunication equipment in the presence of ambient noise. It is a signal processing framework that acts on the received signal from the far end speaker to reduce the listening effort of the near end speaker.
However, the round-trip delay is strictly limited in modern mobile telecommunication systems, which urges to reduce the filtering delay for any near end listening enhancement system. Additionally, a filter-banks with non-uniform resolution have proven beneficial in many speech enhancement systems.
In this paper, we propose a combination of the concept of near end listening enhancement with an approach to realize filter-banks with a non-uniform resolution and a very low delay. The results show that a considerable improvement of speech intelligibility can by achieved by a non-uniform frequency resolution. On the other hand, it is possible to drastically reduce the algorithmic delay without reducing the listening enhancement.
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