Editing Differential pulse-code modulation (section)

==Option 2: analysis by synthesis==
The incorporation of the decoder inside the encoder allows quantization of the differences, including nonlinear quantization, in the encoder, as long as an approximate inverse quantizer is used appropriately in the receiver. When the quantizer is uniform, the decoder regenerates the differences implicitly, as in this simple diagram that Cutler showed:

[[File:Cutler DPCM patent.png|center|thumb|500px]]