annotate yeti/cqtkernel.yeti @ 1:f5379a70fc37
Initial kernel parameters
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Chris Cannam <c.cannam@qmul.ac.uk> |
| date |
Wed, 23 Oct 2013 17:31:04 +0100 |
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0106107cb972 |
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line source |
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1
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2 module cqtkernel;
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3
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4 { pow, round, nextPowerOfTwo } = load may.mathmisc;
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5
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6 fs = 48000;
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7
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8 fmax = fs/2;
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9
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10 bins = 24;
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11
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12 q = 1;
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13
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14 atomHopFactor = 0.25;
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15
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16 thresh = 0.0005;
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17
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18 fmin = (fmax/2) * (pow 2 (1/bins));
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20 bigQ = q / ((pow 2 (1/bins)) - 1);
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21
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22 nk_max = round(bigQ * fs / fmin);
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23
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24 nk_min = round(bigQ * fs / (fmin * (pow 2 ((bins-1)/bins))));
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25
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26 atomHop = round(nk_min * atomHopFactor);
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27
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28 first_center = atomHop * Math#ceil(Math#ceil(nk_max/2) / atomHop);
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29
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30 fftLen = nextPowerOfTwo (first_center + Math#ceil(nk_max/2));
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31
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32 println "fs = \(fs), fmax = \(fmax), bins = \(bins), q = \(q), atomHopFactor = \(atomHopFactor), thresh = \(thresh)";
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33
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34 println "fmin = \(fmin), bigQ = \(bigQ), nk_max = \(nk_max), nk_min = \(nk_min), atomHop = \(atomHop), first_center = \(first_center), fftLen = \(fftLen)";
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35
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36 ();
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37
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