annotate tests/test-summaries/expected/testplug-curve-vsr-mean.csv @ 398:30c64a311d9c
Added tag sonic-annotator-1.6 for changeset a82030ec7b1f
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Chris Cannam |
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Tue, 09 Jun 2020 17:33:22 +0100 |
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6a804920b4a8 |
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Chris@235
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1 # Sonic Annotator's summary method integrates the values across
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Chris@235
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2 # time. If an output lacks duration for its features, each feature is
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3 # considered to extend until the timestamp of the following feature,
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4 # and the final feature is considered to extend until the end of the
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5 # input or the last-ending output, whichever is later.
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6 #
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7 # The curve-vsr output is therefore considered to have 9 values (0.0
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8 # to 0.8) that span 0.75 seconds each, followed by one value (0.9)
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9 # that spans the 3 seconds from 6.75 to 9.75 where the final output of
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10 # the plugin ends (that's the notes-regions output).
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11 #
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12 # The sum of 0.0..0.8 is 3.6, so the mean is (3.6 * 0.75 + 0.9 * 3.0)
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13 # / 9.75 = 0.553846 approx.
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14 #
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15 # Equivalently we can consider the last feature the same as four
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16 # features of 0.75 seconds each (i.e. the same durations as the first
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17 # 9) each with the same value, 0.9. The mean is then the sum of
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18 # 0.0..0.9 plus three more 0.9s, i.e. 7.2, divided by 13.
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19 #
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20 0.000000000,9.750000000,mean,0.553846,"(mean value, continuous-time average)"
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