There are so many options for viewing an audio signal in FL, Wave Candy on the 'Selected' channel is a must IMO.
Having said that, one of my favorite views of what is happening spectrally is the 128-band view in the Fruity Vocoder.
I know, I know... this is not what the Vocoder was inteded for, but it is a great spectrum analyzer as far as I'm concerned. EQUO's display is close, but not nearly as many bands.
gol, what do you think of an option in Wave Candy for a view similar to this?
There may have been a prior post where this was addressed, if so I apologize in advanced.