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annotate toolboxes/MIRtoolbox1.3.2/AuditoryToolbox/FreqResp.m @ 0:e9a9cd732c1e tip

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first hg version after svn
author wolffd
date Tue, 10 Feb 2015 15:05:51 +0000
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wolffd@0 1 % mag = FreqResp(filter, f, fs)
wolffd@0 2 % Find the frequency response (in dB) of a filter (1x5 vector) at
wolffd@0 3 % frequency f and sampling rate fs.
wolffd@0 4
wolffd@0 5 % (c) 1998 Interval Research Corporation
wolffd@0 6
wolffd@0 7 function mag=FreqResp(filter,f,fs)
wolffd@0 8 cf = exp(i*2*pi*f/fs);
wolffd@0 9 mag = (filter(3) + filter(2)*cf + filter(1)*cf.^2) ./ ...
wolffd@0 10 (filter(5) + filter(4)*cf + cf.^2);
wolffd@0 11 mag = 20*log10(abs(mag));