Work of PZT ceramics sounder for sound source artificial larynx

Yuuichi Sugio; Ryota Kanetake; Akimitsu Tanaka; Katsutoshi Ooe

doi:10.1117/12.715742

27 April 2007 Work of PZT ceramics sounder for sound source artificial larynx

Yuuichi Sugio, Ryota Kanetake, Akimitsu Tanaka, Katsutoshi Ooe

Proceedings Volume 6525, Active and Passive Smart Structures and Integrated Systems 2007; 65251H (2007) https://doi.org/10.1117/12.715742
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2007, San Diego, California, United States

Abstract

We aim to develop the easy-to-use artificial larynx with high tone quality. We focus on using a PZT ceramics sounder as its sound source, because it is small size, low power consumption, and harmless to humans. But conventional PZT ceramics sounder have the problem that it cannot generate an enough sound in the low frequency range, thus they cannot be used for artificial larynx. Then, we aim to develop the PZT ceramics sounder which can generate enough volume in the low frequency range. If we can lower the resonance frequency of the sounder, it can generate low pitch sound easily. Therefore I created the new diaphragm with low resonance frequency. In addition, we could obtain the high amplitude by changing method of driving. This time, we report on the characteristic comparison of this new PZT ceramics sounder and conventional one. Furthermore, for this new one, we analyzed the best alignment of PZT ceramics and the shape of the diaphragm to obtain low resonance frequency and big amplitude. In fact we analyzed the optimization of the structure. The analysis is done by computer simulation of ANSYS and Laser Doppler Vibrometer. In the future, we will add intonation to the generated sound by input wave form which is developed concurrently, and implant the sounder inside of the body by the method of fixing metal to biomolecule which is done too. And so high tone quality and convenient artificial larynx will be completed.

Citation Download Citation

Yuuichi Sugio, Ryota Kanetake, Akimitsu Tanaka, and Katsutoshi Ooe "Work of PZT ceramics sounder for sound source artificial larynx", Proc. SPIE 6525, Active and Passive Smart Structures and Integrated Systems 2007, 65251H (27 April 2007); https://doi.org/10.1117/12.715742

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