Third International Conference on Spoken Language Processing (ICSLP 94)

Yokohama, Japan
September 18-22, 1994

Development of a Portable Multi-Function Digital Hearing Aid

Tsuyoshi Mekata, Yoshiyuki Yoshizwrti, Yumiko Koto, Etji Noguchi, Yoshinori Yamada

Central Research Laboratories, Matsushita Electric Industrial Co., Ltd., Kyoto, Japan

We have developed a portable multi-function digital hearing aid and its fitting system. The size of the hearing aid is 59 x 63 x 26 mm and the weight is 98 grams. The processing speed of its DSP chip is 6.6 MIPS. It works for 20 hours continuously on one Lithium-ion rechargeable battery. We introduced four kinds of basic software modules which can be combined: impulsive sound suppression, 3 channel compression, temporal consonant enhancement and enhancement of spectral contrast By combination of modules, 14 programs are installed in DSP on-chip ROM. The fitting system based on a personal computer measures the residual hearing ability of the hearing impaired and sends fitting parameters to customize the hearing aid. We will evaluate and improve the hearing aid this year.

Full Paper

Bibliographic reference.  Mekata, Tsuyoshi / Yoshizwrti, Yoshiyuki / Koto, Yumiko / Noguchi, Etji / Yamada, Yoshinori (1994): "Development of a portable multi-function digital hearing aid", In ICSLP-1994, 2119-2122.