Objective Quality Measures for Dereverberation Methods based on Room Impulse Response Equalization

Authors: E. Albertin, J. Rennies, S. Goetze
Abstract:

Hands-free communication devices are commonly used e.g. in offices or car environments. These devices have to cope with several problems such as ambient noise, acoustic echoes and room reverberation. Reverberation is caused by reflections at room boundaries in closed spaces and increases with the spatial distance between the loudspeaker and the near-end user. A high amount of reverberation decreases speech intelligibility at the position of the near-end speaker. Listening-room compensation (LRC) can be used to reduce the influence of reverberation on acoustic signals. However, such algorithms may have an impact on the perception of the sound quality of the  dereverberated signals. In this contribution the performance of dereverberation algorithms will be analysed. The evaluation of the sound quality of the dereverberated signals was done by the subjective listening tests. Additionally, the objective judgement of the dereverberated signals was accomplished by using different objective measures that are expected to be able to assess the quality of the LRC algorithms. The objective measures were classified in two different classes: measures that are based on the impulse response of the system and measures that are based on the signals. The results of the objective and subjective evaluation will be compared by correlation analysis.

Document type: Conference Paper
Publication: Berlin, Germany, 15. - 18. March 2010
Conference: 36th German Annual Conference on Acoustics (DAGA 10)
Files:
ARG10_daga10.pdf297 KB
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Last change on 29.03.2010 by S. Goetze
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