A level compacting machine is proposed that combines a quantiser of limited resolution with oversampling and Nth-order feedback to maintain a more optimum signal transparency. The system, designated sigma-ADC (DDC), finds applications at the analogue-digital, digital-analogue gateways and allows amplifier studies to be applied directly to ADC. Other cited applications include oversampled DAC and code conversions to DSM and PWM formats. Both analogue-digital and all digital constructions are presented, together with supporting computer simulation using transient analysis procedures.

Author: Hawksford, Malcolm J.
Affiliation: Plum Valley Engineering, San Jose, CA
AES Convention: 78 (May 1985) Paper Number: 2248
Publication Date: May 1, 1985
Subject: Measurement and Instrumentation

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