Thread: 1st Jolla phone - What we know, what we don't
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robthebold is offline robthebold
2013-09-02 , 16:58
Posts: 1,038 | Thanked: 3,981 times | Joined on Nov 2010 @ USA
#58
Originally Posted by juiceme View Post

Just grab a sample buffer, do a FFT on it and present the results on a GUI of your liking. I vaguely remember doing something like that when I was a child, for a sonar project I did... using 6502 assembly
Wow. For what kind of sample rate (and spectral resolution) could a 6502 compute FFTs in real time? I needed a DSP back "in the day" to analyze ~15 kHz wide signal, and I could only get 256 bin resolution at that. Stone knives and bear skins, practically. (And really, I wasn't even doing "real" real-time, since in actuality I was just grabbing the middle of every fourth sweep of an FM-CW RADAR baseband output.)
 

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