After my question about a dual-band flanger that flanged both bass and treble at possibly different rates and depths, I got to thinking. We know about octave fuzz pedals, and many people like them. Would the various modulations sound good with bass if the octave up was the signal being processed and then blended into the clean -- Octave Flanger, Octave Phaser, Octave Tremolo, Octave Vibrato? What about Octave Delay? These are the sort of thoughts that plague my brain on a daily basis.