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RadioReference.com Forums
I'm probably like most people. I don't have time to listen to the feeds all day.
What I am proposing is a histogram or time line of activity get generated along with the archives of the day. This would let someone like me just pull up the archives for say, a monday, and have a look at when there was a lot of traffic versus none.
Right now what I would do is download the audio file for that day and scrub through all the blank air in Audacity.
The timeline could be implemented pretty easy by comparing a given 30 min audio file size versus a "moving long term average" of say the last 2 days worth of audio, which would ensure that the histogram is always relative to the recent amount of traffic on the system.