A Monolithic Audio Spectrum Analyzer

A Monolithic Audio Spectrum Analyzer

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 ope...

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Veröffentlicht in:IEEE journal of solid-state circuits 1983-02, Vol.18 (1), p.40-45
Hauptverfasser: Lin, L.T., Hsin-Fu Tseng, Cox, D.B., Viglione, S.S., Conrad, D.P., Runge, R.G.
Format: Artikel
Sprache:eng
Schlagworte:
Band pass filters
Channel bank filters
Filtering
Frequency
MOS devices
Rectifiers
Signal processing
Spectral analysis
Speech analysis
Speech processing
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Beschreibung
Zusammenfassung: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 X 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.
ISSN:0018-9200
1558-173X
DOI:10.1109/JSSC.1983.1051897