Title :
A monolithic audio spectrum analyzer
Author :
Lin, Lyon T. ; Tseng, Hsin-Fu ; Cox, Douglas B. ; Viglione, Sam S. ; Conrad, Denton P. ; Runge, Ronald G.
Author_Institution :
Weitek Corporation, Santa Clara, CA
fDate :
2/1/1983 12:00:00 AM
Abstract :
A monolithic audio spectrum analyzer with 16 channels of bandpass filters, half-wave rectifiers, and postfiltering has been fabricated with double-poly NMOS technology. The chip was designed using switched-capacitor filter techniques. It performs a total of 84 poles of filtering and contains 100 operational amplifiers in an area of 225 × 280 mils. A system dynamic range of better than 43 dB, linearity of better than 1 percent, and center frequency accuracy of better than 1 percent have been achieved.
Keywords :
Band pass filters; Channel bank filters; Filtering; Frequency; MOS devices; Rectifiers; Signal processing; Spectral analysis; Speech analysis; Speech processing;
Journal_Title :
Acoustics, Speech and Signal Processing, IEEE Transactions on
DOI :
10.1109/TASSP.1983.1164038
