(meteorobs) FW: [radiometeoren] Re: Re: Re: Re: Question about airplane and automatic counting Spectrum Lab

Paul Goelz pgoelz at comcast.net
Wed Oct 2 15:44:36 EDT 2013

At 02:17 PM 9/13/2013, you wrote:
>2 Years ago I perfected an Algorithm that reliably detects Sirens 
>using MatLAB. My Algorithm could be adapted to SpecLAB MACROs 
>rejecting the Aircraft signals. The principle is sound and fool 
>proof; analyze the up and down slope character of the amplitude in 
>adjacent bins, then match the slope changes to predictable rates of 
>change. I could reliably detect Sirens 400 meters away in a 
>Microphone mounted outside an automobile going the speed limit on a 
>freeway. My problem is that I do not have any beacons near me from 
>which to harvest test recordings. Any ideas?


If you are looking for a continuous feed (as opposed to recordings) I 
can stream my receiver (audio plus spectrogram video) for you (and 
anyone else) for a couple days if you like.  Let me know.  I use 
U-Stream.  I think the audio stream is probably quite adequate for 
your purposes.


Paul Goelz
Rochester Hills, MI USA
pgoelz at comcast.net

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