Hi all, Ug, one of those days: I realize I sent this reply directly to Eric rather than the list. -Mike
---------- Forwarded message ---------- From: Mike Powers <noflicks...@gmail.com> Date: Fri, Aug 21, 2009 at 11:33 AM Subject: Re: [nfc-l] detection settings for raven pro? To: e kent <benchofrus...@yahoo.com> Hi Eric (and everyone), We've been using Raven Pro 1.4 beta to scour our nocturnal recordings for flight calls. I've been testing a new recording unit and running Raven detectors on the sound files (WAV format) each morning. This season I have found two detector settings that I'm overall very pleased with. Our best results (thus far) are from running two Band-limited Energy Detectors (BLED), one that covers the 6 - 11kHz (mimicking Bill's tseep detector) and one that is limited to 2.25 - 3.75 kHz (mimicking Bill's thrush detector). I've attached both detectors to this email if you (or anyone else) is interested in trying them, at least as a starting point for your own recordings. If anyone does I'd love to hear how they work and/or what adjustments were needed. I also wrote out the settings below if you just want to peruse them. A caveat: these detectors seem to work well for my site in Horseheads, NY (35 miles southwest of Ithaca), but from our anecdotal experiences it seems detectors may have to be tweaked to be site-specific. Also, an exclusion band is desirable on rainy nights, I've had good results using this feature this season. I included these settings as well though I only use them when Raven returns over 1000 events (in the Sparrow band) due to rain. I'm still testing Exclusion Band settings in the Thrush band to counter rain. Bird wise: I found good numbers two nights ago, the night of 19 August. My Sparrow detector picked found 145 selections, 136 were actual calls. I haven't gone back to put IDs and numbers on them yet, but White-throated Sparrow, Ovenbird, American Redstart, Canada, Black-and-white, and Black-throated Blue Warblers stuck out, there are many Zeeps, Double-banded Up- and Down-sweeps that need closer attention. I'm not done with the Thrush band yet, most (if not all) of what I've seen so far are Veery. Apologies I don't have the IDs and numbers broken out yet. Again, the current settings are below my sig file, note that I did not enter anything to four or five decimal places. Raven appropriately re-sizes these entries automatically. Cheers, Mike -- Mike Powers Research Biologist, Conservation Science Cornell Lab of Ornithology 159 Sapsucker Woods Road Ithaca, NY 14850 email: me...@cornell.edu SPARROW DETECTOR Band Tab Min freq: 6000 Hz Max freq: 11000 Hz Min Duration: 26.66667 ms Max Duration: 400 ms Min Separation: 101.3333 ms Noise Tab Min Occupancy: 25.0 % Return Occupancy - unchecked SNR Threshold: 25 dB Block Size: 4997.3333 ms Hope Size: 245.3333 ms Percentile: 50.0 Exclusion Band unused, except on particularly rainy nights. If needed I use: Min Freq: 2000 Hz Max Freq: 4000 Hz SNR Threshold: 6.0 or 8.0 (depends on how each fairs, but these seem to give decent results) Bandwidth Tab is unused. THRUSH DETECTOR Band Tab Min freq: 2250 Hz Max freq: 3750 Hz Min Duration: 32 ms Max Duration: 330.66667 ms Min Separation: 48 ms Noise Tab Min Occupancy: 20.0 % Return Occupancy: unchecked SNR Threshold: 4.0 dB Block Size: 997.3333 ms Hope Size: 250.66667 ms Percentile: 50.0 Exclusion Band unused, except on particularly rainy nights and selection tables are greater than 7500. I'm still working with this to get a reasonable result. Bandwidth Tab is unused. Cheers, Mike -- Mike Powers Research Biologist, Conservation Science Cornell Lab of Ornithology 159 Sapsucker Woods Road Ithaca, NY 14850 email: me...@cornell.edu On Thu, Aug 20, 2009 at 6:29 PM, e kent<benchofrus...@yahoo.com> wrote: > Last spring I used the software tools from oldbird.org (tseep-x, thrush-x > and GlassOfFire) to examine sound files. Unfortunately, it was a bit > tedious as I was recording in an unsupported bit-rate. So I made batch and > shell scripts to move, convert, and examine the files > ~relatively~ automatically. However, I have Raven Pro now (1.4. beta) and > am wondering if anyone has detection settings to share? That way, I can do > all detections without spending time converting, etc. > > By the way, once I used "GlassofFire" I really liked how it lets you quickly > categorizing and move results. Guess I'll see if it's still useful if I can > move to doing all detections in Raven. > > Thanks for any help! > Eric > -- NFC-L List Info: http://www.NortheastBirding.com/NFC_WELCOME http://www.NortheastBirding.com/NFC_RULES http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html --
MEP-Sparrow
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MEP-Thrush
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