Delta-sigma converters are electronic devices that convert analog signals into digital signals. They achieve this by oversampling the input signal and using a feedback loop to reduce quantization noise. This process allows for high-resolution digital output, making them ideal for applications like audio processing and data acquisition. These converters typically consist of a delta-sigma modulator and a digital filter. The modulator samples the analog signal at a much higher rate than the Nyquist rate, while the digital filter helps to remove unwanted noise and artifacts. This combination results in accurate and precise digital representations of the original analog signal.