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A discriminative analysis within and across voiced and unvoiced consonants in neutral and whispered speech in multiple Indian languages

Meenakshi, Nisha G and Ghosh, Prasanta Kumar (2016) A discriminative analysis within and across voiced and unvoiced consonants in neutral and whispered speech in multiple Indian languages. In: 16th Annual Conference of the International-Speech-Communication-Association (INTERSPEECH 2015), SEP 06-10, 2015, Dresden, GERMANY, pp. 781-785.

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Abstract

Whispered speech lacks the vocal chord vibration which is typically used to distinguish voiced and unvoiced consonants, making their discrimination a challenging task. In this work, we objectively and subjectively quantify the amount of discrimination between a voiced (V) consonant and its unvoiced (UV) counterpart using seven V-UV consonant pairs in six Indian languages, in neutral and whispered speech. We also quantify the extent to which the voicing characteristics in a consonant changes from neutral to whispered speech. Experiments using vowelconsonant-vowel (VCV) stimuli demonstrate that the V-UV discrimination reduces from neutral to whispered speech in a consonant specific manner with highest reduction for /g/-/k/ pair and least reduction for /z/-/s/ pair. Interestingly, this reduction in objectively measured discrimination does not directly correlate with the reduction in the V-UV classification accuracy obtained from subjective evaluation. Results from listening test show that the maximum and minimum reduction in the V-UV classification accuracy occur for /d3/-/tf/ and /v/-/f/ pairs when whispered. Whispered Tamil and Telugu VCV achieve the highest (85.71%) and lowest (58.93%) subjective V-UV classification accuracy respectively, demonstrating the variability in the production and perception whispered consonants across languages.

Item Type: Conference Proceedings
Additional Information: Copy right for this article belongs to the ISCA-INT SPEECH COMMUNICATION ASSOC, C/O EMMANUELLE FOXONET, 4 RUE DES FAUVETTES, LIEU DIT LOUS TOURILS, BAIXAS, F-66390, FRANCE
Department/Centre: Division of Electrical Sciences > Electrical Engineering
Depositing User: Id for Latest eprints
Date Deposited: 28 Oct 2016 06:58
Last Modified: 28 Oct 2016 06:58
URI: http://eprints.iisc.ac.in/id/eprint/55127

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