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From: stefano on 13 Aug 2010 06:43
I was asked to design a BANDPASS filter by this istruction:
"2-stage 4th order filter with Q=4 and 12dB/octave high-pass and low-pass rolloffs".
But I don't really understand what I am asked. Is this band pass made of a 4th order high pass followed by a 4th order low pass, and Q is the quality factor which defines the width of the band (how distant the two cut frequencies are) ??
And still, I would not know how to implement the 12dB rolloff in Matlab.
Thanks for your help.
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