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-rw-r--r--octave/pl.m45
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diff --git a/octave/pl.m b/octave/pl.m
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-% Copyright David Rowe 2009
-% This program is distributed under the terms of the GNU General Public License
-% Version 2
-%
-% Plots a raw speech sample file, you can optionally specify the start and end
-% samples and create a large and small PNGs
-
-function pl(samname1, start_sam, end_sam, pngname)
-
- fs=fopen(samname1,"rb");
- s=fread(fs,Inf,"short");
-
- st = 1;
- en = length(s);
- if (nargin >= 2)
- st = start_sam;
- endif
- if (nargin >= 3)
- en = end_sam;
- endif
-
- figure(1);
- clf;
- plot(s(st:en));
- axis([1 en-st 1.1*min(s) 1.1*max(s)]);
-
- if (nargin == 4)
-
- % small image
-
- __gnuplot_set__ terminal png size 420,300
- ss = sprintf("__gnuplot_set__ output \"%s.png\"", pngname);
- eval(ss)
- replot;
-
- % larger image
-
- __gnuplot_set__ terminal png size 800,600
- ss = sprintf("__gnuplot_set__ output \"%s_large.png\"", pngname);
- eval(ss)
- replot;
-
- endif
-
-endfunction