Mercurial > hg > camir-ismir2012

annotate toolboxes/MIRtoolbox1.3.2/AuditoryToolbox/FreqResp.m @ 0:cc4b1211e677 tip

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initial commit to HG from Changeset: 646 (e263d8a21543) added further path and more save "camirversion.m"
author Daniel Wolff
date Fri, 19 Aug 2016 13:07:06 +0200
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Daniel@0 1 % mag = FreqResp(filter, f, fs)
Daniel@0 2 % Find the frequency response (in dB) of a filter (1x5 vector) at
Daniel@0 3 % frequency f and sampling rate fs.
Daniel@0 4
Daniel@0 5 % (c) 1998 Interval Research Corporation
Daniel@0 6
Daniel@0 7 function mag=FreqResp(filter,f,fs)
Daniel@0 8 cf = exp(i*2*pi*f/fs);
Daniel@0 9 mag = (filter(3) + filter(2)*cf + filter(1)*cf.^2) ./ ...
Daniel@0 10 (filter(5) + filter(4)*cf + cf.^2);
Daniel@0 11 mag = 20*log10(abs(mag));