Home > ACA-Code > ToolFreq2Mel.m

ToolFreq2Mel

PURPOSE ^

converts frequency to mel

SYNOPSIS ^

function [mel] = ToolFreq2Mel(fInHz, cModel)

DESCRIPTION ^

converts frequency to mel
>
> @param fInHz: frequency
> @param cModel: 'Fant','Shaughnessy', or 'Umesh'
>
> @retval mel pitch value
 ======================================================================

CROSS-REFERENCE INFORMATION ^

This function calls: This function is called by:

SUBFUNCTIONS ^

SOURCE CODE ^

0001 %converts frequency to mel
0002 %>
0003 %> @param fInHz: frequency
0004 %> @param cModel: 'Fant','Shaughnessy', or 'Umesh'
0005 %>
0006 %> @retval mel pitch value
0007 % ======================================================================
0008 function [mel] = ToolFreq2Mel(fInHz, cModel)
0009 
0010     if (nargin < 2)
0011         cModel = 'Fant';
0012     end
0013 
0014     % set function handle
0015     hPitchFunc = str2func (['aca' cModel '_I']);
0016     
0017     mel = hPitchFunc(fInHz);
0018 end
0019 
0020 % Fant
0021 function [mel] = acaFant_I(f)
0022     mel = 1000 * log2(1 + f/1000);
0023 end
0024 
0025 % Shaughnessy
0026 function [mel] = acaShaughnessy_I(f)
0027     mel = 2595 * log10(1 + f/700);
0028 end
0029 
0030 % Umesh
0031 function [mel] = acaUmesh_I(f)
0032     mel = f./(2.4e-4*f + 0.741);
0033 end

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