title: A 1-channel 3-band wide dynamic range compression chip for vibration transducer of implantable hearing aids.
abstract: In this paper, a digital audio processing chip which uses a wide dynamic range compression (WDRC) algorithm is designed and implemented for implantable hearing aids system. The designed chip operates at a single voltage of 3.3V and drives a 16 bit parallel input and output at 32 kHz sample. The designed chip has 1-channel 3-band WDRC composed of a FIR filter bank, a level detector, and a compression part. To verify the performance of the designed chip, we measured the frequency separations of bands and compression gain control to reflect the hearing threshold level.
authors.affiliation: Department of Electrical Engineering Graduate School, Kyungpook National University, Deagu, South Korea.
authors.forename: Dongwook
authors.initials: D
authors.lastname: Kim
authors.forename: Kiwoong
authors.initials: K
authors.lastname: Seong
authors.forename: Myoungnam
authors.initials: M
authors.lastname: Kim
authors.forename: Jinho
authors.initials: J
authors.lastname: Cho
authors.forename: Jyunghyun
authors.initials: J
authors.lastname: Lee
mesh_terms: D000465:Algorithms; D001309:Auditory Threshold / Q000502:physiology; D004581:Electronics; D004867:Equipment Design; D005583:Fourier Analysis; D006310:Hearing Aids; D034381:Hearing Loss / Q000628:therapy; D006801:Humans; D008280:Magnetics; D008297:Male; D008875:Middle Aged; D012984:Software; D013701:Temporal Bone / Q000473:pathology*; D014159:Transducers; D014732:Vibration
keywords: application specific integrated circuit; fitting formula; implantable hearing aids; vibration transducer; wide dynamic range compression