Regarding the spectroscope, this is how it looks normally:
And this is how it looks when the value are presented in a logarithmic fashion:
Does this look Ok? To be honest, it’s a horrible spectral viewer anyway. I wonder if we’re not just wasting time with this. Have you checked out the SVG FFT example? I think it makes a far prettier spectral viewer than the signaldisplay widget.
Btw, I haven’t pushed that change yet as I’m not entirely sure I’ve done it right…