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A PCM Voice Codec with On-Chip Filters

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5 Author(s)
Caves, J.T. ; Bell-Northern Res. Ltd., Ottawa, Ont., Canada ; Chan, C.H. ; Rosenbaum, S.D. ; Sellars, L.P.
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A monolithic NMOS coder/decoder (codec) with associated CCD transversal minimum-phase filters has been successfully implemented. The codec operates by charge redistribution in a binaryweighted capacitor array, with a resistor chain to define individual steps. The experimental performance compares well with PCM codecs implemented with discrete components.

Published in:

Communications, IEEE Transactions on  (Volume:27 ,  Issue: 2 )

Date of Publication:

Feb 1979

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