comparison trunk/matlab/bmm/carfac/ERB_Hz.m @ 516:68c15d43fcc8

Added MATLAB code for Lyon's CAR-FAC filter cascade.

+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;