Arrangement for decoding a signal encoded by means of adaptive delta modulation
AssigneeU.S. Philips Corporation
InventorLudwid D. J. Eggermont
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Abstract
Arrangement for decoding a compressed delta modulation signal, wherein, to simplify the anaogue output filter, an interpolating digital filter having a signal-independent pulse response is included in the dynamic expansion circuit.
Claims2
An arrangement for decoding a digital signal formed by an analogue data signal encoded by adaptive delta modulation, the arrangement comprising a dynamic expansion circuit having a dynamic control signal generator and a pulse modulator for modulating by the dynamic control signal the digital signal to be decoded, the modulated signal being applied to a converter for reproduction of the analogue data signal, wherein the arrangement further comprises an interpolating digital filter, having a signal-independent pulse response, for interpolating, prior to modulation by the dynamic control signal, the digital signal to be decoded.
Dependencies are inferred from the claim text.