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Prediction of reverberation time and speech transmission index in long enclosures
The Journal of the Acoustical Society of America, 2005It is known that the sound field in a long space is not diffuse, and that the classic theory of room acoustics is not applicable. A theoretical model is developed for the prediction of reverberation time and speech transmission index in rectangular long enclosures, such as corridors and train stations, where the acoustic quality is important for speech.
Li, KM, Man, Lam, P
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Effect of Highpass Filtering on the Speech Transmission Index
2022Vibrations in Physical Systems, 33(3), 2022306-1 - 2022306 ...
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Analysis of short-time speech transmission index algorithms
The Journal of the Acoustical Society of America, 2008Various methods have been shown to compute the Speech Transmission Index (STI) using speech as a probe stimulus (Goldsworthy & Greenberg, J. Acoust. Soc. Am., 116, 3679-3689, 2004). Frequency-domain methods, while accurate at predicting the long-term STI, cannot predict short-term changes due to fluctuating backgrounds.
Karen Payton, Mona Shrestha
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Past, present and future of the speech transmission index [PDF]
, 2002 Table of contentsTammo's and Herman's Index. An introduction by Manfred R. SchroederChapter 1. The roots of the STI approach. Tammo Houtgast and HermanJ.M. Steeneken: Introduction - Our first effort - Introduction of STI - Speech envelope spectrum and MTF - Further developments - Envelope modulation and the earChapter 2.
Houtgast, T. +2 more
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Comparison of Direct and Indirect Methods of Speech Transmission Index Assessment
International Journal of ComputingIn this paper, direct and indirect methods of speech transmission index (STI) estimation are compared. Two versions of the indirect method of the STI estimating are considered. In the first version of the indirect method, a pair of signals is used as a test signal.
Arkadiy Prodeus +2 more
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2010
An objective measure of speech intelligibility is required in order to guess whether or not the written transcription made from an intercept recording is an accurate representation of the talker's speech or if it is influenced by the views of the transcribers.
COSTANTINI, GIOVANNI +2 more
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An objective measure of speech intelligibility is required in order to guess whether or not the written transcription made from an intercept recording is an accurate representation of the talker's speech or if it is influenced by the views of the transcribers.
COSTANTINI, GIOVANNI +2 more
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The information index: An objective measure of speech transmission performance *
Annales Des Télécommunications, 1990The maximal mutual information (channel capacity) between the input and output of a telephone connection was calculated, taking into account both the frequency and time domain aspects of this problem. This leads to define an « information index » which can be computed from objective measurements.
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