Patent ID: 6606047
Filing Date: 2003-08-12
Classification: H03M

Abstract:
A circuit, comprising:an analogue to digital converter for digitising an analogue signal to form digitised samples; a clip processor, adapted to determine estimated values for clipped digitised samples; and means for replacing said clipped digitised samples with said estimated values, thereby mitigating effects of clipping in an output from said circuit; wherein said means for replacing includes a buffer adapted to dynamically store a plurality of said digitised samples produced by said analogue to digital converter; wherein said clip processor is adapted to read said digitised samples from said buffer and replace said clipped digitised samples with said estimated values; wherein said buffer is of a length sufficient to store a first plurality of unclipped digitised samples occurring before a group of said clipped digitised samples, said group of said clipped digitised samples, and a second plurality of unclipped digitised samples following said group of said clipped digitised samples; and wherein said first and second pluralities of unclipped digitised samples each comprise at least three samples.