Signals with low signal-to-noise ratio can pass through narrow-band filters. Is there a good filtering effect?
Yes In the process of narrowband signal filtering, the effect of signal filtering and noise reduction is often limited by attenuation gain. The narrower the signal, the better the effect, so it can have a good filtering effect. Filter is a kind of frequency selective device, which can let certain frequency components in the signal pass and greatly attenuate other frequency components.