Anti-aliasing Filter

An anti-aliasing filter is a device used in electronic and audio systems to prevent high-frequency signals from causing errors in digital conversion. When an analog signal is converted to digital form, frequencies above a certain limit can create misleading copies called aliases, which distort the signal. The anti-aliasing filter removes or reduces these high-frequency components before sampling, ensuring the digital representation accurately reflects the original sound or signal. This process helps maintain clarity and accuracy in digital recordings and communications.