Discrimination between Modal, Breathy and Pressed Voice for Single Vowels Using Neck-Surface Vibration Signals

Applied Sciences
Zhengdong LeiLuc Mongeau

Abstract

The purpose of this study was to investigate the feasibility of using neck-surface acceleration signals to discriminate between modal, breathy and pressed voice. Voice data for five English single vowels were collected from 31 female native Canadian English speakers using a portable Neck Surface Accelerometer (NSA) and a condenser microphone. Firstly, auditory-perceptual ratings were conducted by five clinically-certificated Speech Language Pathologists (SLPs) to categorize voice type using the audio recordings. Intra- and inter-rater analyses were used to determine the SLPs' reliability for the perceptual categorization task. Mixed-type samples were screened out, and congruent samples were kept for the subsequent classification task. Secondly, features such as spectral harmonics, jitter, shimmer and spectral entropy were extracted from the NSA data. Supervised learning algorithms were used to map feature vectors to voice type categories. A feature wrapper strategy was used to evaluate the contribution of each feature or feature combinations to the classification between different voice types. The results showed that the highest classification accuracy on a full set was 82.5%. The breathy voice classification accuracy was notab...Continue Reading

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Citations

Mar 7, 2020·Applied Sciences·Zhengdong LeiLuc Mongeau
Sep 14, 2019·Journal of Speech, Language, and Hearing Research : JSLHR·Katherine L MarksDaryush D Mehta
Aug 7, 2020·Journal of Speech, Language, and Hearing Research : JSLHR·Víctor M EspinozaMatías Zañartu

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