Re: [nfc-l] Interesting early papers on moonwatching

2009-08-21 Thread David La Puma
I just wanted to pop my head in and say "thanks" to those who put this list together (Chris? Andrew?). I'm stoked to be a part of it now. I'd love the opportunity to work on a project combining moon watching with radar and flight calls. As Mike said, "Let's do it!" in the meantime, I'll be

RE: [nfc-l] Night Flight, Catron County, New Mexico 18-19 August 2009

2009-08-21 Thread Ted Floyd
Good stuff, Andrew! A few things: 1. "Ted's clips" of Brewer's Sparrows are actually Nathan Pieplow's. 2. Interesting to compare Andrew's observations in Catron County, NM, with observations from "up north" in Colorado. Pretty convergent, on the whole, I would say. 3. Andrew says "presumed"

Re: [nfc-l] Night Flight, Catron County, New Mexico 18-19 August 2009

2009-08-21 Thread Andrew Farnsworth
As usual, I must second Ted's thoughts. Nasty is right about this complex - Mike Lanzone and I recorded flight calls of Black-headed Grosbeak, Western Tanager and Bullock's Oriole in Arizona in 2005, and the variation was staggering. On subsequent (and previous actually) trips to the SW, I

[nfc-l] Battle Ground, Clark County, WA night flight

2009-08-21 Thread Jim Danzenbaker
Hi Night Flight enthusiasts, Jim Danzenbaker here from Battle Ground, Clark County, Washington which is located about 20 miles north of Portland, Oregon, I was glad to hear a flood of nocturnal migrants flying over my house in Battle Ground, Clark County this morning. I estimated about 5 birds

Fwd: [nfc-l] detection settings for raven pro?

2009-08-21 Thread Mike Powers
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 Date: Fri, Aug 21, 2009 at 11:33 AM Subject: Re: [nfc-l] detection settings for raven pro? To: e kent Hi Eric (and everyone),

[nfc-l] NFC Detectors and Equipment?

2009-08-21 Thread Chris Tessaglia-Hymes
Hi everyone, In the past, I have not used any detectors when going through my night recordings at home (Etna, NY). I have collected my sound data from the roof-top microphone (Evans-style, with a Knowles microphone element) piped into my home computer running Raven Pro, recording a continuous

Re: [nfc-l] NFC Detectors and Equipment?

2009-08-21 Thread Colby Neuman
If you feel so inclined, please respond to the list as there's at least more than one of us with many of these same questions. Thanks again. Colby On Fri, Aug 21, 2009 at 11:09 AM, Chris Tessaglia-Hymes wrote: > Hi everyone, > > In the past, I have not used any detectors when going through my

[nfc-l] NFC Detectors and Equipment?

2009-08-21 Thread David Martin
I'm going to be very interested in other's responses to Chris' questions. This is my third fall recording NFCs. For the last two I was doing it at home, feeding the mic input to my home computer and recording with Easy Hi-Q Recorder. This year I added a second mic at a nature center.

Re: [nfc-l] NFC Detectors and Equipment?

2009-08-21 Thread Andrew Farnsworth
Hi all, There is much fodder for discussion here, but I'll need to keep this brief - if I can, I'll reply at length to all the additional questions that Chris posed in a previous email in this vein, but it probably won't be until later in the weekend. David, I am pleased to hear that you are

Re: [nfc-l] NFC Detectors and Equipment?

2009-08-21 Thread Michael Lanzone
Hi All, I will post some specifics when I am looking at the data, but we did run comparisons between XBAT, Raven, and Tseep. Breifly, first step was to benchmark Bill's software. Then we ran detectors in XBAT and Raven using 140 different setting to look at site based and detector based variables

Re: [nfc-l] NFC Detectors and Equipment?

2009-08-21 Thread Erik Johnson
Hi All, I've been recording from my home in south Louisiana with set-ups like Chris and David over the last few years. I've been using the oldbird software (tseep, etc), but only get about 20% of the flight calls that I would otherwise detect by ear (and visually on spectrographs). Not only is

Re: [nfc-l] NFC Detectors and Equipment?

2009-08-21 Thread Michael Lanzone
No software we have worked with gets near 100%. I have toyed around with templates that got 95% of the calls, and detectors can get ~90%, but more commonly get in the 60-80% range. In Louisiana with the insects it would be on the low end of this. Katydids and such are problematic for

Re: [nfc-l] NFC Detectors and Equipment?

2009-08-21 Thread Chris Tessaglia-Hymes
So, the question is: can the unwanted cricket and katydid sounds be removed from the audio channel at the time of sound acquisition, real-time, such that their acoustic signatures are minimized or eliminated altogether from the collected sound data prior to an automatic detector batch process?

[nfc-l] Adaptive Noise Cancellation

2009-08-21 Thread Chris Tessaglia-Hymes
Aha! I did a little searching. It looks like it is possible to cancel out the unwanted sounds, real-time. My first result was this, which describes adaptive noise cancellation technology: http://www.developer.com/java/other/article.php/3599661 Sincerely, Chris T-H Chris Tessaglia-Hymes

Re: [nfc-l] Adaptive Noise Cancellation

2009-08-21 Thread Michael Lanzone
It's worth playing with... I would be worried about loosing thrushes and other spp in 3-5kHz range in the mix though, but if it worked well would solve a huge problem. Mike Sent from my iPhone On Aug 21, 2009, at 10:09 PM, Chris Tessaglia-Hymes wrote: Aha! I did a little searching. It

Re: [nfc-l] Adaptive Noise Cancellation

2009-08-21 Thread Chris Tessaglia-Hymes
I think the idea with adaptive noise cancellation is this: you have a dual microphone system. One channel is the primary channel (collecting the target sounds). The second channel is the "noise collection" channel. Through some mathematical algorithms, you subtract the noise collected in the

Re: [nfc-l] Engineers - chime in? Adaptive Noise Cancellation

2009-08-21 Thread Chris Tessaglia-Hymes
Okay, last post for the night The more I read about this, the more and more it sounds really cool. So, you software and hardware engineer people out there - what do you think? Can it work to better clean up night flight call data collection? Heck, this could get you closer to that 90-95%

Re: [nfc-l] Engineers - chime in? Adaptive Noise Cancellation

2009-08-21 Thread Ben Coulter
I'm not a sound engineer, but it seems like if you pick up any portion of flight calls in the noise reference signal, you will end up removing or reducing the flight calls in the resultant recording, which would be extremely counterproductive.  So you would need to obtain a good recording of