A low-pass filter allows frequencies below a specified cutoff point to pass through while attenuating higher frequencies. It is commonly used to reduce high-frequency noise or smooth signals, making it valuable in audio processing, electronics, and communication systems to focus on lower frequency components.
A high-pass filter allows frequencies above a certain cutoff point to pass through while attenuating lower frequencies. It is used to remove low-frequency noise or interference, making it useful in audio processing, image processing, and communication systems to highlight higher frequency components.
A bandpass filter allows frequencies within a specific range to pass through while attenuating frequencies outside that range. It is used to isolate a particular band of frequencies, making it ideal for applications like audio processing and wireless communications, where specific frequency ranges need to be emphasized or selected.
A Notch filter attenuates frequencies within a specific range while allowing frequencies outside that range to pass through. Also known as a notch filter, it is used to eliminate unwanted frequencies, such as noise or interference, without affecting the surrounding frequencies, making it useful in audio processing and radio communications.