Sigma-Delta Modulation

Sigma-Delta Modulation is a technique used in converting analog signals to digital form with high accuracy. It works by repeatedly comparing the incoming analog signal to an internal reference, then adjusting and recording how much the signal exceeds or falls below this reference. Instead of capturing the exact value directly, it accumulates the difference over time, producing a digital bitstream that represents the original signal. This process emphasizes the important details of the signal while reducing noise, allowing for efficient, high-quality digital conversion, commonly used in audio and sensor applications.