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An Algorithm for Intelligibility Prediction of Time-Frequency Weighted Noisy Speech
2011 (English)In: IEEE Transactions on Audio, Speech, and Language Processing, ISSN 1558-7916, Vol. 19, 2125-2136 p.Article in journal (Refereed) Published
Abstract [en]

In the development process of noise-reduction algorithms, an objective machine-driven intelligibility measure which shows high correlation with speech intelligibility is of great interest. Besides reducing time and costs compared to real listening experiments, an objective intelligibility measure could also help provide answers on how to improve the intelligibility of noisy unprocessed speech. In this paper, a short-time objective intelligibility measure (STOI) is presented, which shows high correlation with the intelligibility of noisy and time-frequency weighted noisy speech (e.g., resulting from noise reduction) of three different listening experiments. In general, STOI showed better correlation with speech intelligibility compared to five other reference objective intelligibility models. In contrast to other conventional intelligibility models which tend to rely on global statistics across entire sentences, STOI is based on shorter time segments (386 ms). Experiments indeed show that it is beneficial to take segment lengths of this order into account. In addition, a free Matlab implementation is provided.

Place, publisher, year, edition, pages
2011. Vol. 19, 2125-2136 p.
Keyword [en]
Noise reduction, objective measure, speech enhancement, speech intelligibility prediction
National Category
Signal Processing
URN: urn:nbn:se:kth:diva-98825DOI: 10.1109/TASL.2011.2114881ISI: 000293734500024OAI: diva2:539513
QC 20120807Available from: 2012-07-04 Created: 2012-07-03 Last updated: 2012-08-07Bibliographically approved

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Taal, Cees H.
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