Data crunching is a real issue, Walt. The two firms doing the noise
studies for the National Park Service (Wyle and HMM&H) have typically
collected 22, 000 - 25,000 hrs PER PARK. Analyze that!
Stuart Gage, head of the Envirosonics lab at Mich. State Univ. has
launched a system that analyzes the audio data automatically.
http://www.cevl.msu.edu
Bernie
>Wild Sanctuary wrote:
>> For work we're doing with the Nat. Park Service, we're in the process
>> of assembling a prototype data storage package made up entirely of a
>> series flash cards. The problem for the NPS was how to record for
>> long periods of time, under variable weather and climates, using
>> little power, with a system durable and inexpensive enough to do the
>> job required with greatly reduced budgets. This system allows long
>> periods (up to a week) of continuous recording stereo data at 16
>> bit/44.1kHz. while using very little energy to drive the system since
>> there are no moving parts. There have been many questions over the
>> past several weeks regarding long periods of recording.
>
>Is this similar to Cornell's system? And, almost more crucial, will it,
>or plans, etc. be available publicly? So far, Cornell does not seem to
>be inclined to share.
In their stated primacy, why the hell should they? Ain't that the way
academics works?!!!!
>
>> Of course, the problem will be what to do with it once it's stored on
>> the cards...
>
>Many fields of science have run into this problem. Our ability to gather
>data far exceeds our ability to analyze it. It's really sad to see large
>amounts of recording that will only be analyzed by some computer system
>looking for some specific thing. As is true for most automated loggers.
>
>The problem is that the very best and most accurate analysis tool is
>someone's ears. And what with having to go back an recheck, sleep, eat
>and so on, it takes far more than a week to analyze a weeks recording.
>
>I turned in 37 CD's of audio, well less than a weeks worth of continuos
>audio, for the Georgia Herp Atlas. It was a year and a half after the
>end of the study before the last of that was listened to and confirmed,
>even though over half of it had been confirmed before the study ended.
>And all the way to the end even more new stuff was being found. (The
>bird folks got a bunch of night bird sounds off it, I only reported the
>frogs)
>
>Walt
>
>
>
>To unsubscribe from this group, send an email to:
>
>
>
>
>Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
--
Wild Sanctuary, Inc.
P. O. Box 536
Glen Ellen, CA 95442
707-996-6677 tel
707-996-0280 fax
http://www.wildsanctuary.com
________________________________________________________________________
________________________________________________________________________
|