Delta Modulation

Transmit only the direction of signal change

Real-World Applications

Delta modulation was used in military secure communication phones and simple voice storage chips due to its simple circuitry (only 1bit ADC/DAC required). CVSD (Continuously Variable Slope Delta modulation) is part of Bluetooth voice coding.

Experiment Steps

1. Slope Overload: Cannot track fast signal changes
2. Granular Noise: Jagged oscillation when signal is flat

Simulation Experiment