ISCA Archive SSW 2013
ISCA Archive SSW 2013

Development of electrolarynx with hands-free prosody control

Kenji Matsui, Kenta Kimura, Yoshihisa Nakatoh, Yumiko O. Kato

The feasibility of using a motion sensor to replace a conventional electrolarynx(EL) user interface was explored. Forearm motion signals from MEMS accelerometer was used to provide on/off and pitch frequency control. The vibration device was placed against the throat using support bandage. Very small battery operated ARM-based control unit was developed and placed on the wrist. The control unit has a function to convert the tilt angle into the pitch frequency, as well as the device enable/disable function and pitch range adjustment function. As for the forearm tilt angle to pitch frequency conversion, two different conversion methods, linear mapping method and F0 model-based method, were investigated. A perceptual evaluation, with two well-trained normal speakers and ten subjects, was performed. Results of the evaluation study showed that both methods were able to produce better speech quality in terms of the naturalness.

Index Terms: prosody, electrolarynx, hands-free

Cite as: Matsui, K., Kimura, K., Nakatoh, Y., Kato, Y.O. (2013) Development of electrolarynx with hands-free prosody control. Proc. 8th ISCA Workshop on Speech Synthesis (SSW 8), 273-277

  author={Kenji Matsui and Kenta Kimura and Yoshihisa Nakatoh and Yumiko O. Kato},
  title={{Development of electrolarynx with hands-free prosody control}},
  booktitle={Proc. 8th ISCA Workshop on Speech Synthesis (SSW 8)},