Mercurial > hg > camir-aes2014
diff toolboxes/MIRtoolbox1.3.2/AuditoryToolbox/FreqResp.m @ 0:e9a9cd732c1e tip
first hg version after svn
| author | wolffd |
|---|---|
| date | Tue, 10 Feb 2015 15:05:51 +0000 |
| parents | |
| children |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/toolboxes/MIRtoolbox1.3.2/AuditoryToolbox/FreqResp.m Tue Feb 10 15:05:51 2015 +0000 @@ -0,0 +1,11 @@ +% mag = FreqResp(filter, f, fs) +% Find the frequency response (in dB) of a filter (1x5 vector) at +% frequency f and sampling rate fs. + +% (c) 1998 Interval Research Corporation + +function mag=FreqResp(filter,f,fs) +cf = exp(i*2*pi*f/fs); +mag = (filter(3) + filter(2)*cf + filter(1)*cf.^2) ./ ... + (filter(5) + filter(4)*cf + cf.^2); +mag = 20*log10(abs(mag));