Mercurial > hg > aimc
diff trunk/matlab/bmm/carfac/ERB_Hz.m @ 516:68c15d43fcc8
Added MATLAB code for Lyon's CAR-FAC filter cascade.
| author | tom@acousticscale.org |
|---|---|
| date | Wed, 15 Feb 2012 21:26:40 +0000 |
| parents | |
| children | aa282a2b61bb |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/trunk/matlab/bmm/carfac/ERB_Hz.m Wed Feb 15 21:26:40 2012 +0000 @@ -0,0 +1,15 @@ +function ERB = ERB_Hz(CF_Hz, ERB_break_freq, ERB_Q) +% function ERB = ERB_Hz(CF_Hz, ERB_break_freq, ERB_Q) +% +% Auditory filter nominal Equivalent Rectangular Bandwidth +% Ref: Glasberg and Moore: Hearing Research, 47 (1990), 103-138 +% ERB = 24.7 * (1 + 4.37 * CF_Hz / 1000); + +if nargin < 3 + ERB_Q = 1000/(24.7*4.37); % 9.2645 + if nargin < 2 + ERB_break_freq = 1000/4.37; % 228.833 + end +end + +ERB = (ERB_break_freq + CF_Hz) / ERB_Q;