A two chip PCM voice CODEC with filters

A two chip PCM voice CODEC with filters

Architecture and design of a monolithic voice CODEC is described. The CODEC consists of 2 chips-the transmit chip includes the companding coder (nonlinear A/D) along with filtering functions, and the receive chip consists of the expanding decoder (nonlinear D/A) chip with its smoothing filter. Exper...

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Veröffentlicht in:IEEE journal of solid-state circuits 1979-12, Vol.14 (6), p.961-969
Hauptverfasser: Haque, Y.A., Gregorian, R., Blasco, R.W., Mao, R.A., Nicholson, W.E.
Format: Artikel
Sprache:eng
Schlagworte:
Capacitors
Circuits
CMOS technology
Codecs
Decoding
Filters
Operational amplifiers
Phase change materials
Power amplifiers
Pulse modulation
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Beschreibung
Zusammenfassung:Architecture and design of a monolithic voice CODEC is described. The CODEC consists of 2 chips-the transmit chip includes the companding coder (nonlinear A/D) along with filtering functions, and the receive chip consists of the expanding decoder (nonlinear D/A) chip with its smoothing filter. Experimental results show the circuit to meet accepted requirements.
ISSN:0018-9200
1558-173X
DOI:10.1109/JSSC.1979.1051304