Hi,
I'm trying to use data to work out the average durations of certain sounds
for a project here at work. The problem I have is that I'm a real newbie at
Perl, and I'm finding the data really hard to get my head around. I don't
really know where to begin. Any suggestions for an approach would be really
appreciated.
The data, in plain text files, looks something like this:
1.40616 tw-
1.51162
1.53491 w-ih
1.55572
1.61759 ihLx
1.70433
1.74422 Lx#
1.91998
1.94224 UU
1.95236
The first column is a time in seconds, and the second column (not always
filled) represents the symbol/sound I'm measuring.
What I need to do is to work out the length of a certain symbol. (the one in
the 2nd column, e.g. "w-ih"). I have to do this by taking the time in the
previous record away from the time in the next record to get the duration
1.40616 tw-
1.51162 <- the start time of the symbol to measure
1.53491 w-ih <- the symbol to measure
e.g. 1.5572 - 1.51162 = 0.04558
1.55572 <- the stop time of the symbol to measure
1.61759 ihLx
1.70433
As you can see, the stop time for one sound is very often also the start
time for the next sound. As well as this I face the problem that the first
sound in all the records cannot be measured, as it has no start point. So I
must always ignore this. I want to output the durations of all the symbols
in a given data set, e.g..
w-ih 0.04558
ihLx 0.14861
Any solutions, or hints at achieving a solution would be great
regards,
Dennis
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