A Delta-Sigma Modulator is an electronic device used to convert analog signals into digital form. It works by oversampling the input signal and using a feedback loop to reduce quantization noise. This process allows for high-resolution digital representation of the original analog signal. These modulators are commonly used in audio processing, data acquisition systems, and digital signal processing. By employing noise shaping techniques, they effectively push noise out of the band of interest, resulting in improved signal quality. This makes them ideal for applications requiring precise measurements and high fidelity.