view tests/test-summaries/expected/testplug-curve-vsr-mean.csv @ 399:a3912193ce69 tip

Default branch is now named default on git as well as hg, in case we ever want to switch to mirroring in the other direction
author Chris Cannam
date Thu, 27 Aug 2020 15:57:37 +0100
parents 6a804920b4a8
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# Sonic Annotator's summary method integrates the values across
# time. If an output lacks duration for its features, each feature is
# considered to extend until the timestamp of the following feature,
# and the final feature is considered to extend until the end of the
# input or the last-ending output, whichever is later.
#
# The curve-vsr output is therefore considered to have 9 values (0.0
# to 0.8) that span 0.75 seconds each, followed by one value (0.9)
# that spans the 3 seconds from 6.75 to 9.75 where the final output of
# the plugin ends (that's the notes-regions output).
#
# The sum of 0.0..0.8 is 3.6, so the mean is (3.6 * 0.75 + 0.9 * 3.0)
# / 9.75 = 0.553846 approx.
# 
# Equivalently we can consider the last feature the same as four
# features of 0.75 seconds each (i.e. the same durations as the first
# 9) each with the same value, 0.9. The mean is then the sum of
# 0.0..0.9 plus three more 0.9s, i.e. 7.2, divided by 13.
#
0.000000000,9.750000000,mean,0.553846,"(mean value, continuous-time average)"