The FIR filter works by keeping a series of samples and multiplying each of those samples by a fixed coefficient (which is based on the position in the series). FIR filter) and the Infinite Impulse Response filter (aka. The two simplest are probably the Finite Impulse Response filter (aka. There are a number of different filtering algorithms that are used. leave levels unchanged) for high frequencies, but applies maximum attenuation to low frequencies.Ī low pass filter is the reverse - it will apply no attenuation to low frequencies by applies attenuation to high frequencies.
721 1 1 gold badge 10 10 silver badges 22 22 bronze badgesįiltering describes the act of processing data in a way that applies different levels of attenuation to different frequencies within the data.Ī high pass filter will apply minimal attentuation (ie.
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