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SII Software -- New Web Site (Speech Intelligibility Index)
A new site www.sii.to has been created by members of
the Acoustical Society of America (ASA) Working Group
S3-79, which is in charge of reviewing American
National Standard ANSI S3.5-1997 (“Methods for
Calculation of the Speech Intelligibility Index”). The
site provides software for calculating the Speech
Intelligibility Index (SII), as well as notes relevant
to potential future changes of the standard and the
listing of known errors to be corrected in the next
version of the standard. You are encouraged to
contact us with any information that may help make the
Standard better and easier to use. Also, if you have
other software that can facilitate SII calculations,
we urge you to send it to us for a review and posting
on this site.
This standard defines a method for computing a
physical measure that is highly correlated with the
intelligibility of speech as evaluated by speech
perception tests given a group of talkers and
listeners. This measure is called the Speech
Intelligibility Index, or SII. The SII is calculated
from acoustical measurements of speech and noise.
Chas Pavlovic, chairman
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