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diff dsp/lin2mel.m @ 32:c3b0cd708782

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Imported core dsp tools.
author samer
date Sun, 20 Jan 2013 13:48:47 +0000
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dsp/lin2mel.m	Sun Jan 20 13:48:47 2013 +0000
@@ -0,0 +1,12 @@
+% lin2mel - matrix to warp linear scale power spectra to mel scale
+%
+% lin2mel :: 
+%    N:natural      ~'size of FFT used to compute spectra',
+%    nonneg         ~'sampling frequency',
+%    [[1,2]->freq]  ~'upper and lower frequency limits',
+%    L:natural      ~'number of mel bands to compute' 
+% -> [[L,dftbins(N)]].
+
+function melW=lin2mel(N,fs,flim,L)
+	melW = tri_filterbank_aa(melspace(flim(1),min(flim(2),fs/2),L+2),binmap(0,fs/2,dftbins(N)));
+end