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Compare PCM and Delta modulation.
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PCM Delta modulation
1] Pulse code modulation has sample-quantize and encode mechanism. 1] Delta modulation has sample-compare and encode mechanism.
2] It requires n bits per sample, depending upon accuracy. 2] It requires a single bit per sample.
3] Band width required is more as compared. 3] Band width required is less as compared.
4] Quantization error is present. 4] slope over load & granular noise is present.
5] Since, more number of bits are present, power requirement is large. 5] Since less number of bits are present, power required is less.
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