Delta modulation block diagram

1. What is delta modulation and its block diagram?
2. What is delta modulation and how does it work?
3. Why do we use delta modulation?

What is delta modulation and its block diagram?

The Delta Modulator comprises of a 1-bit quantizer and a delay circuit along with two summer circuits. Following is the block diagram of a delta modulator. The predictor circuit in DPCM is replaced by a simple delay circuit in DM. Using these notations, now we shall try to figure out the process of delta modulation.

What is delta modulation and how does it work?

Delta modulation quantized the gap between the observed and previous steps instead of the value of the input analog waveform. The process of delta modulation compares the current sample value to the prior sample value. The amplitude of the step signal will be raised or lowered based on the difference.

Why do we use delta modulation?

Delta Modulation method is generally used for the encoding of signals from analog to PCM. It is also applied for signal conversion in television systems. One of the most critical applications of this technique is that it is used for real-time Signal Processing and database reduction in the ECG waveform.