Harmonic tremolo
A tremolo that splits the signal into two frequency bands and modulates them in opposite directions, producing a swirling, phase-like pulse.
Instead of simply turning the overall volume up and down, harmonic tremolo raises the level of the low frequencies while lowering the high ones, and then reverses the process, so the pulse seems to move through the sound rather than just on and off. The result sits somewhere between tremolo and phaser and is one of the signature sounds of early sixties amplifiers. It is more complex to build than a simple bias tremolo, which is why it disappeared for decades and has since been revived in pedal form.
Example: An amplifier or pedal whose tremolo sounds like the sound is rotating rather than simply fading is using harmonic tremolo.
See also
Related
- PageTremolo
- PageBias tremolo
- PagePhaser
- PageAmp in a box
- PageAmp stand
- PageAttenuator
- PageAaron Dessner
- PageAce Frehley