Abstract
This article presents different source coding techniques like PCM, DPCM and DM and discusses various stages of analog to digital conversion, like sampling, quantising and coding. It also discusses about the effects of undersampling like aliasing and the advantages of oversampling. It highlights the various companding techniques like A-law companding and μ-law companding and concludes with the discussion on comparative performance of PCM, DPCM and DM coding techniques.
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