论文信息 - Intelligibility Assessment of a System for Artifical Bandwidth Extension of Telephone Speech

Intelligibility Assessment of a System for Artifical Bandwidth Extension of Telephone Speech

Techniques for artificial bandwith extension (ABWE) [1] aim to extend the limited audio bandwidth of current narrowband telephone systems (0.3 – 3.4 kHz) towards the wideband frequency range (0.05 – 7 kHz). In several studies, a consistent quality advantage of the enhanced signals over narrowband speech is reported, e.g., [2]. In this contribution we evaluate an ABWE algorithm under realistic conditions and assess its impact on the speech intelligibility.

Peter Vary | Florian Heese | Bernd Geiser

[1] Jochem Sotscheck. Ein Reimtest für Verständlichkeitsmessungen mit deutscher Sprache als ein verbessertes Verfahren zur Bestimmung der Sprachübertragungsgüte , 1982 .

[2] K. S. Rhebergen,et al. A Speech Intelligibility Index-based approach to predict the speech reception threshold for sentences in fluctuating noise for normal-hearing listeners. , 2005, The Journal of the Acoustical Society of America.

[3] Peter Jax,et al. On artificial bandwidth extension of telephone speech , 2003, Signal Process..

[4] Paavo Alku,et al. Conversational Evaluation of Speech Bandwidth Extension Using a Mobile Handset , 2012, IEEE Signal Processing Letters.