16 May 2008 Recognition of Japanese devoiced vowels using array of plastic optical fiber moisture sensors
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Proceedings Volume 7004, 19th International Conference on Optical Fibre Sensors; 70043B (2008); doi: 10.1117/12.785438
Event: 19th International Conference on Optical Fibre Sensors, 2008, Perth, WA, Australia
Abstract
A novel plastic-optical-fiber (POF) microphone for discerning devoiced breath, which is based on the detection of moisture pattern depending on the shape of mouth, have been studied. In the experiment coupled with this microphone and Dynamic Programming (DP) matching method, recognition rate over 90% was obtained against five devoiced vowels in Japanese. Therefore, using this system, verbally handicapped people will create sounds with a small effort.
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Masayuki Morisawa, Tomohito Taki, Yoichi Natori, Shinzo Muto, "Recognition of Japanese devoiced vowels using array of plastic optical fiber moisture sensors", Proc. SPIE 7004, 19th International Conference on Optical Fibre Sensors, 70043B (16 May 2008); doi: 10.1117/12.785438; https://doi.org/10.1117/12.785438
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Head

Phase only filters

Mouth

Polymer optical fibers

Cladding

Optical sensors

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