Hi Jussi:
I've seen realtime waterfall spectral displays, they're a bit more than 3D versions of the spectrograms produced by HASAS or baudline or any other Linux spectrum analyzer. The signal is represented as a constantly changing display, with colors indicating frequency intensity, and dying away after appearing (as opposed to remaining static, obscuring subsequent frequencies with perhaps less intensity). Again, if you looked at the images for Spectrogram and Cspect you can see exactly what I'm talking about.
Snd produces a beautiful OpenGL spectral display, but it is a non-realtime display. Bill S. indicated that there was a way to make it work in realtime, but when I tried it I discovered that my machine really wasn't able to keep up, and the display did not include the fading effect described above.
Btw, I apologize for not knowing the exact vocabulary to describe exactly what it I want, but again, look at the images for Spectrogram and Cspect, then imagine them in a rolling display, and that should give the idea.
Best regards,
dp
Jussi Laako wrote:
On Tue, 2004-06-08 at 21:29, Dave Phillips wrote:
Yes, along with display controls (perspective, colors, threshhold, etc).
Which ones ? Stanko Juzbasic began a port of Allan Peevers' Spectrogram using XForms and OpenGL, but I'm not sure if it ever actually ran on a Linux system. Many spectrum analyzers exist for Linux, but none provide what I'm looking for. Check out the information and screenshots of Spectrogram and Cspect here:
HASAS already has these kinds of output:
http://www.sonarnerd.net/projects/hasas/HASAS-Spectrogram.png http://www.sonarnerd.net/projects/hasas/websgram.jpg
So basically it could be OK with 3D display?
