No, I didn't do a non-filtered version (I filtered as the first step). There
are better times to record, and I figured if filtering the lows compromised
the recording I'd go out when the noise is down (no local traffic at the
airport, no waves of jets overflying on their way to SLC, and no trains in
the valley) and redo the tests. That or find some other shoreline to record.
Trouble is, there aren't that many shorelines in Utah, and the mountains are
full of snow, so few meadows, either.
I did try another place before the airport, but in an hour I heard two
western meadowlarks, two different waterfowl of some kind, three blackbirds,
and the or four big frogs. Low aural density. But it was very quiet there,
mostly because the ponds were closed by the state for heavy metal
contamination from the hot springs.
I also had a blanket over the mics to keep wind off the diaphragms, so I'd
like to repeat it on a windless day/hour so we can hear the mics unhindered.
Bruce Wilson KF7K
http://science.uvsc.edu/wilson
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