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Comparing Human and Machine Vowel Classification

Reichel, Uwe D. and Mády, Katalin (2007) Comparing Human and Machine Vowel Classification. In: 16th International Congress on Phonetic Sciences, Saarbrücken, Germany.

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Abstract

In this study we compare human ability to identify vowels with a machine learning approach. A perception experiment for 14 Hungarian vowels in isolation and embedded in a carrier word was accomplished, and a C4.5 decision tree was trained on the same material. A comparison between the identification results of the subjects and the classifier showed that in three of four conditions (isolated vowel quantity and identity, embedded vowel identity) the performance of the classifier was superior and in one condition (embedded vowel quantity) equal to the subjects’ performance. This outcome can be explained by perceptual limits of the subjects and by stimulus properties. The classifier’s performance was significantly weakened by replacing the continuous spectral information by binary 3-Bark thresholds as proposed in phonetic literature [8]. Parts of the resulting decision trees can be interpreted phonetically, which could qualify this classifier as a tool for phonetic research.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: vowels, Hungarian, perception, classification, decision trees
Subjects: P Language and Literature / nyelvészet és irodalom > PH Finno-Ugrian, Basque languages and literatures / finnugor és baszk nyelvek és irodalom > PH04 Hungarian language and literature / magyar nyelv és irodalom
Depositing User: Dr. Katalin Mády
Date Deposited: 15 Jan 2014 15:33
Last Modified: 05 Apr 2023 07:52
URI: http://real.mtak.hu/id/eprint/8760

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