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Implementation of a fully implantable middle-ear hearing device chip.
- Source :
-
Technology & Health Care . Feb2021, p399-413. 15p. - Publication Year :
- 2021
-
Abstract
- Recently, with the increase in the population of hearing impaired people, various types of hearing aids have been rapidly developed. In particular, a fully implantable middle ear hearing device (F-IMEHD) is developed for people with sensorineural hearing loss. The F-IMEHD system comprises an implantable microphone, a transducer, and a signal processor. The signal processor should have a small size and consume less power for implantation in a human body.In this study, we designed and fabricated a signal-processing chip using the modified FFT algorithm. This algorithm was developed focusing on eliminating time delay and system complexity in the transform process. The designed signal-processing chip comprises a 4-channel WDRC, a fitting memory, a communication 1control part, and a pulse density modulator. Each channel is separated using a 64-point fast Fourier transform (FFT) method and the gain value is matched using the fitting table in the fitting memory. The chip was designed by Verilog-HDL and the designed HDL codes were verified by Modelsim-PE 10.3 (Mentor graphics, USA). The chip was fabricated using a 0.18 μm CMOS process (SMIC, China). Experiments were performed on a cadaver to verify the performance of the fabricated chip. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09287329
- Database :
- Academic Search Index
- Journal :
- Technology & Health Care
- Publication Type :
- Academic Journal
- Accession number :
- 149006798
- Full Text :
- https://doi.org/10.3233/thc-218038