Title :
An Adaptive Quality-Factor Bandpass Filter
Author :
Odame, Kofi M. ; Hasler, Paul
Author_Institution :
Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA
Abstract :
In this paper, we propose a novel bandpass filter design that incorporates automatic gain control (AGC). The gain control in the filter reduces the performance requirements of a wide-band AGC, and allows for low-power multichannel compression. The filter achieves up to 15dB of compression on a 65dB input dynamic range and is tunable over the audio frequency range, with muW power consumption and < 5% harmonic distortion.
Keywords :
Q-factor; adaptive filters; automatic gain control; band-pass filters; hearing aids; low-power electronics; adaptive quality-factor bandpass filter; automatic gain control; low-power multichannel compression; tunable dynamic range; Auditory system; Band pass filters; Channel bank filters; Deafness; Dynamic range; Frequency; Gain control; Power harmonic filters; Q factor; Transconductance;
Conference_Titel :
Circuits and Systems, 2007. ISCAS 2007. IEEE International Symposium on
Conference_Location :
New Orleans, LA
Print_ISBN :
1-4244-0920-9
Electronic_ISBN :
1-4244-0921-7
DOI :
10.1109/ISCAS.2007.378215
