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view aim-mat/modules/bmm/gtfb/ERB2Freq.m @ 4:537f939baef0 tip

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various bug fixes and changed copyright message
author Stefan Bleeck <bleeck@gmail.com>
date Tue, 16 Aug 2011 14:37:17 +0100
parents 74dedb26614d
children
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% support file for 'aim-mat'
%
% (c) 2011, University of Southampton
% Maintained and written by Stefan Bleeck (bleec@gmail.com)
% http://www.soton.ac.uk/aim


%
%	ERB -> Frequency and ERBwidth (Glasberg and Moore, 1990)
%	Toshio IRINO
%	11 Mar. 1998
%
%	function [cf, ERBwidth] = ERB2Freq(ERBrate)
%	INPUT	ERBrate:  ERB rate
%	OUTPUT  cf:       Center frequency (Hz)
%		ERBwidth: ERB bandwidth (Hz)
%
%	Ref: Glasberg and Moore : Hearing Research, 47 (1990), 103-138
%            For different formulae (years), see ERB2FreqYear.m
%       
%
function [cf, ERBwidth] = ERB2Freq(ERBrate),

if nargin < 1,  help ERB2Freq; end;

cf = (10.^(ERBrate./21.4) - 1)./4.37 * 1000;
ERBwidth = 24.7.*(4.37*cf/1000 + 1);