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annotate m-toolbox/test/test_ao_spectrogram.m @ 29:54f14716c721 database-connection-manager

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Update Java code
author Daniele Nicolodi <nicolodi@science.unitn.it>
date Mon, 05 Dec 2011 16:20:06 +0100
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1 % function test_ao_spectrogram()
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2 % TEST_AO_SPECTROGRAM test spectrogram function for analysis objects.
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3 %
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4 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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5 %
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6 % DESCRIPTION: TEST_AO_SPECTROGRAM test spectrogram function for analysis
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7 % objects.
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8 %
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9 % CALL: test_ao_spectrogram;
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10 %
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11 % HISTORY: 26-12-2007 Hewitson
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12 % Creation.
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13 %
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14 % VERSION: % $Id: test_ao_spectrogram.m,v 1.1 2008/01/30 21:36:26 hewitson Exp $
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15 %
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16 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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17
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18 clear all
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19
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20
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21 %% Make time-series object
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22 nsecs = 100;
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23 fs = 100;
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24 p = plist('waveform', 'noise', 'fs', fs, 'nsecs', nsecs);
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25 n = ao(p);
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26 p = plist('waveform', 'chirp', 'fs', fs, 'nsecs', nsecs, 'f0', 0, 'f1', 50, 't1', nsecs);
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27 s = ao(p);
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28
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29 a = s+n;
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30
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31 %% Make spectrogram
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32
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33 sxx = spectrogram(a, plist('Nfft', 4*fs));
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34
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35
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36 figure
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37 imagesc(sxx.data.x, sxx.data.y, sxx.data.z)