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## chhanndresh 3 years ago What is the difference between a band reject filter and a notch filter?

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1. nkamath777

In signal processing, a band-stop filter or band-rejection filter is a filter that passes most frequencies unaltered, but attenuates those in a specific range to very low levels. It is the opposite of a band-pass filter. A notch filter is a band-stop filter with a narrow stopband (high Q factor).

2. chhanndresh

on what parameters Q relies upon? and is it true that a notch filter is a limiting case of band stop filter?

3. nkamath777

$Q=\omega0/\beta$

4. nkamath777

where $\omega0$ is the central frequency

5. nkamath777

and beta is the band width

6. kashysud

band reject filter as the name suggests .. rejects a band and notch filter is used to select a particular frequency and nt a band

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