DOI: 10.1109/isscc.1979.1155883
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Abstract: The application of digital signal processing to telecommunication systems has long promised higher quality performance at lower cost with reduced maintenance requirements. However, the implementation of digital techniques in communications has been slow, due mainly to the high cost of encoding and decoding associated with the analogdigital interfaces.Major progress in this area has occurred recently with the development of innovative monolithic circuits which allow a cost-effective solution to the interface p…

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