Following are the difference between PCM (pulse code modulation.) and DPCM (differential pulse code modulation)
|The PCM stands for pulse code modulation.
||The DPCM stands for differential pulse code modulation.
|The PCM (pulse code modulation) can be use 4, 8 or 16 bit per sample.
||The DPCM (differential pulse code modulation) can be use 2 or 3 bit per sample.
|It has required highest bandwidth.
||It has required small bandwidth.
|The quantization error depends on number of levels.
||Slope over load distortion and quantization noise is present.
|The number level depends on number of bit.
||It has fixed number of levels are used.
|There is no feedback in transmitter or receiver.
||The Feedback is present.
|It is used in audio, video and telephony.
||It is used in speech and video.