NDLI: Intelligibility of reverberant speech enhanced by inversion of room response

Content Provider	IEEE Xplore Digital Library
Author	Cole, D. Moody, M. Sridharan, S.
Copyright Year	1994
Description	Author affiliation: Sch. of Electr. & Electron. Syst. Eng., Queensland Univ. of Technol., Brisbane, Qld., Australia (Cole, D.; Moody, M.; Sridharan, S.)
Abstract	The effect on speech intelligibility of inverting the impulse response of a small, highly reverberant acoustical space is evaluated. Phonetically balanced (PB) speech material was recorded with a single microphone in an empty room of about 40 m/sup 3/, with reverberation time of 3 s. The room response was measured using a linear chirp, and various least-squared error inverse filters were designed. Intelligibility of the reverberated and processed speech was measured by quantitative testing with twelve listeners, and by the speech transmission index (STI). Results show improved intelligibility even using very short portions of the room impulse response, with correct responses increasing by 8% using a 93 ms impulse response. Further improvement was noted with increasing filter length. Intelligibility improvements were consistent with two types of subject response tests, but were not reflected in STI values for short filter length.<>
Starting Page	241
Ending Page	244
File Size	321870
Page Count	4
File Format	PDF
ISBN	078031865X
DOI	10.1109/SIPNN.1994.344922
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1994-04-13
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Speech analysis Filters Cepstral analysis Forensics Space technology Speech enhancement Reverberation Speech processing Microphones Testing
Content Type	Text
Resource Type	Article

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