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. 2018 Jun 21;10(7):692. doi: 10.3390/polym10070692

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© 2018 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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The ISSE showing the capability of voice recognition. The ISSE is placed on the top of the loudspeaker and recorded responses towards different scores of Canon-in-D (a) 1–4 measures of Canon-in-D (b) 9–12 measures of Canon-in-D (c) 29 and 30 measures of Canon-in-D. The black image in the upper row indicates the voltage output responses towards different parts of Canon-in-D as measured by ISSE in a self-powered manner and the staff notation in the middle row is corresponding to the three scores of Canon-in-D. The blue image in the bottom row indicates the amplitude profiles of the original audios as measured from a complete acoustic acquisition system and microphone. Relative voltage output as measured by ISSE corresponds to nearly synchronous response to the meter-measured profiles of the original audios.

The ISSE showing the capability of voice recognition. The ISSE is placed on the top of the loudspeaker and recorded responses towards different scores of Canon-in-D (a) 1–4 measures of Canon-in-D (b) 9–12 measures of Canon-in-D (c) 29 and 30 measures of Canon-in-D. The black image in the upper row indicates the voltage output responses towards different parts of Canon-in-D as measured by ISSE in a self-powered manner and the staff notation in the middle row is corresponding to the three scores of Canon-in-D. The blue image in the bottom row indicates the amplitude profiles of the original audios as measured from a complete acoustic acquisition system and microphone. Relative voltage output as measured by ISSE corresponds to nearly synchronous response to the meter-measured profiles of the original audios.