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

2.15.4 Speech intelligibility index

As a supporting f eature the SII (Speech Intelligibility Index) indicates improved audibility expressed in a
percent on the aided display.
SII is a method f or computing a physical measure of the intelligibility of speech. The method is based on
results of the speech perception tests in each group of talkers and listeners. The SII is calculated f rom
acoustical measurements of speech and noise, considering the level of the distortion f actor at standard
speech level. (www.sii.to)

2.15.5 Speech spectrum

Add a Speech spectrum view by right clicking on the graph. This is usef ul when explaining the importance
of speech audibility and/or language development.
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Affinity/Equinox2.0 – Additional Information