Title :
A 85 /spl mu/W asynchronous filter-bank for a digital hearing aid
Author :
Nielsen, F. ; Sparso, J.
Author_Institution :
Oticon Inc., Hellerup, Denmark
Abstract :
This asynchronous re-implementation of a 7-band interpolated FIR (IFIR) filter bank is part of the DigiFocus digital hearing aid manufactured by Oticon Inc. When processing typical data (less than 50 dB sound pressure), the power consumption of the asynchronous chip is 85 /spl mu/W-more than 5 times less than the existing synchronous design.
Keywords :
FIR filters; asynchronous circuits; digital filters; hearing aids; interpolation; 85 muW; DigiFocus digital hearing aid; asynchronous filter-bank; interpolated FIR filter; power consumption; sound pressure; Auditory system; Circuits; Clocks; Delay; Digital filters; Energy consumption; Filter bank; Latches; Logic; Read-write memory;
Conference_Titel :
Solid-State Circuits Conference, 1998. Digest of Technical Papers. 1998 IEEE International
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-4344-1
DOI :
10.1109/ISSCC.1998.672393
