[Top] [All Lists]

Re: ideas? spectrogram export for visual art

Subject: Re: ideas? spectrogram export for visual art
From: florian.radke
Date: Thu Feb 8, 2018 2:19 pm ((PST))
Some thoughts, from the analysis of signals, spectrum, datastreams in wirel=
ess communications and digital (mostly embedded) design. Some of these have=
 rather steep learning curves, knowing how to code in lower languages espec=
ially helps, as does a thorough understanding of quantization/ADC processes=
, and Fourier/FFT. 

 Heck knows I don't have mastery of all those, but have spent quite some ti=
me around those who do, and pick up a few tricks from time to time.

 Baudline (quite powerful, le=
gendary in wireless, oft paired with GNU Radio)

 Here's a few frames of a scan of 900 band RF spectrum, 1 MHz span, https:/=
sp=3Dsharing While the sample was taken at 44 kHz, samples need to be dropp=
ed to avoid, you know, exploding computers. So this gif is about 50 millise=
cond or 1/20th of one second. It's a good demonstration of how much you can=
 learn about an existing radio (OR audio) ecosystem just by "watching" what=
 can be listened to, or is unseen - the strongest signal here, whatever it =
contains, wherever it came from, is probably using simple "frequency shift =
keying" modulation, like a super-fast morse code, using frequency modulatio=
n. Suppose it could be an FM voice carrier as well


 Spectrum Lab

 SBSpectrum (not exactly a wa=
lk in the park, but I love the minimal BW plots. Also, this is extremely ac=
curate, valid, precise, if calibrated and configured correctly. I've not ap=
plied it to audio files but it has potential, I think, to reveal some prett=
y interesting and possibly unknown characteristics in sounds from organisms=
 and ecosystems. I wonder if it is already in use in those fields?)

 Sound View (kinda =

 Processing, j5

 For the brave, and wealthy perhaps, Mathworks

 Hope these are helpful!



"While a picture is worth a thousand words, a
sound is worth a thousand pictures." R. Murray Schafer via Bernie Krause.

Yahoo Groups Links

<*> To visit your group on the web, go to:

<*> Your email settings:
    Digest Email  | Traditional

<*> To change settings online go to:
    (Yahoo! ID required)

<*> To change settings via email:

<*> To unsubscribe from this group, send an email to:

<*> Your use of Yahoo Groups is subject to:


<Prev in Thread] Current Thread [Next in Thread>

The University of NSW School of Computer and Engineering takes no responsibility for the contents of this archive. It is purely a compilation of material sent by many people to the naturerecordists mailing list. It has not been checked for accuracy nor its content verified in any way. If you wish to get material removed from the archive or have other queries about the archive e-mail Andrew Taylor at this address: andrewt@cse.unsw.EDU.AU