Speech Intelligibility Index; Speech Spectrum - Interacoustics Affinity 2.0 Additional Information

2.0
Affinity Additional Information

2.12.4 Speech Intelligibility Index

As a supporting feature the SII (Speech Intelligibility Index) indicates improved audibility expressed in a
percent on the aided display.
SII is a method for computing a physical measure of the intelligibility of speech. The method is based on
results of the speech perception tests in a given group of talkers and listeners. The SII is calculated from
acoustical measurements of speech and noise, taking into account the level of the distortion factor at
standard speech level. (www.sii.to)

2.12.5 Speech Spectrum

Add a Speech spectrum view by right clicking on the graph. This is useful when explaining the importance
of speech audibility and/or language development.
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