Comparison of PicoGUS vs. a real GUS "May be a little higher pitch on picoGus"

[raszpl]

@JorgeCarvalho_web_dev left "May be a little higher pitch on picoGus" message under https://www.youtube.com/watch?v=UJcPF2gYWE4 and I think I also heard this difference. I wrote a comment:

"spectrogram would be ideal for quick glance testing, Linux Baudline produces spectacular results and is free. Audacity can also genereate them, so does Jaaa, sox, etc etc. Pretty much what people doing software defined radio are using."

but then I found something absolutely perfect for the job: https://junkerhq.net/MDFourier/ "MDFourier is an open source software solution created to compare audio signatures and generate a series of graphs that show how they differ."