Fuzzy logic model of perception

The Fuzzy Logic perception model was put forward by Massaro. It is based on the claim that categorical perception does not imply that people have a special module for processing speech. It claims that categorical perception can be understood as a problem of classifying the features that are present in the accoustic pattern.

Massaro claimed that speech is recognised in three stages:

• evalution - speeck is analysed in terms of auditory and visual features (see mcgurk effect)
• integration - the feature information is integrated
• decision - overall evidence is used to identify the speech sound

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