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Near-End Listening Enhancement: The Impact of Far-End Noise Reduction

Authors:
Niermann, M.Vary, P.Jax, P.
Book Title:
Proceedings of German Annual Conference on Acoustics (DAGA)
Organization:
DEGA
Pages:
p.p. 1371-1374
Date:
2019
ISBN:
978-3-93929-614-0
Language:
English

Abstract

The objective of Near-End Listening Enhancement (NELE) is to improve the speech intelligibility of a communication system at the receiving end (near-end) which is in a noisy environment. Common NELE approaches adaptively filter the received speech signal, taking into account the near-end environmental noise characteristics. Usually it is assumed that the received signal is noise-free. In this contribution we consider the situation that the speech from the transmitting side (far-end) is disturbed by far-end noise and that some noise reduction (NR) algorithm is applied there. We study the impact of the far-end NR on the overall performance of the concatenation of NR preprocessing and NELE postprocessing. It is shown that the blind concatenation of NR and NELE may produce severe performance losses and artifacts. Furthermore, first ideas are presented how to improve the interaction by modifications of the processing algorithms.

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