Dr. Matthew R. McClain Profile

Dr. Matthew R. McClain

at 21st Century Technologies Inc

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Proceedings Article | 5 May 2009 Paper

Speech endpoint detection with non-language speech sounds for generic speech processing applications

Matthew McClain, Brian Romanowski

Proceedings Volume 7305, 73051B (2009) https://doi.org/10.1117/12.818868

KEYWORDS: Data modeling, Acoustics, Speech recognition, Throat, Detection and tracking algorithms, Statistical analysis, Signal processing, Analytical research, Algorithm development, Machine learning

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Non-language speech sounds (NLSS) are sounds produced by humans that do not carry linguistic information. Examples of these sounds are coughs, clicks, breaths, and filled pauses such as "uh" and "um" in English. NLSS are prominent in conversational speech, but can be a significant source of errors in speech processing applications. Traditionally, these sounds are ignored by speech endpoint detection algorithms, where speech regions are identified in the audio signal prior to processing. The ability to filter NLSS as a pre-processing step can significantly enhance the performance of many speech processing applications, such as speaker identification, language identification, and automatic speech recognition. In order to be used in all such applications, NLSS detection must be performed without the use of language models that provide knowledge of the phonology and lexical structure of speech. This is especially relevant to situations where the languages used in the audio are not known apriori. We present the results of preliminary experiments using data from American and British English speakers, in which segments of audio are classified as language speech sounds (LSS) or NLSS using a set of acoustic features designed for language-agnostic NLSS detection and a hidden-Markov model (HMM) to model speech generation. The results of these experiments indicate that the features and model used are capable of detection certain types of NLSS, such as breaths and clicks, while detection of other types of NLSS such as filled pauses will require future research.

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