For more in-depth discussion of the controls, please read the original patch notes for this harmonic tremolo, of which this is a specialized variation: https://patchstorage.com/harmolo-a-stereo-harmonic-tremolo-with-tricks/
Differences between “Harmolo” and “Env harmolo”:
— The crossover and separation of the filters is now controllable via envelope. The rate of the tremolo is also envelope controllable. Additionally, these can be controlled by an envelope-driven ADSR and the tremolo’s LFO.
— The reverb has been removed (CPU costs).
— The additional modulation LFO has been removed (CPU costs).
— The sawtooth waveform has been removed from the tremolo (CPU costs).
— The fifth footswitch mode has been removed (it just didn’t work very well, and it made things cleaner).
The signal path is stereo throughout; the envelope follower is taken from the left input.
Controls:
Footswitches:
The left footswitch works the same as before, minus the absent fifth mode.
In the normal tremolo modes (3 & 4), controlling the crossover point or the filter separation will have no effect on the sound.
The front panel controls are relatively unchanged, with two exceptions:
The various “mod” controls have been removed, since these related to the secondary, modulating LFO that was removed.
A bipolar “env depth” control has been added. The envelope can be inverted using negative values (as can the ADSR and the LFO).
Second page:
The switch at the top still controls the tremolo waveform, with the exception that the sawtooth waveform has been removed.
Below this are some new controls.
The first is a source switch:
1. Envelope follower**
2. ADSR
3. Tremolo LFO (waveform corresponds to selection at the top of the page)
The second is a destination switch:
1. Crossover point
2. Filter separation
3. LFO rate
Below this is the ADSR for adjusting its controls.
**I included the ADSR because the envelope follower, used directly, creates a lot of distortion (it is an interesting distortion, but distortion nonetheless); I suspect this is because the envelope follower is very “fuzzy” around its edges. The multi-filter dislikes being modulated (it takes an enormous amount of CPU resources), and I think the calculations that result from the fuzziness of the envelope follower produce the distortion. It’s an interesting distortion, but you get much smoother “envelope” sounds using the ADSR.
Sound clip:
0:00-0:28 — First I use the envelope follower to control the crossover point (note the distortion produced by the envelope follower). Then I switch to the ADSR to create a sense of “movement” behind the tremolo signal.
0:29-1:00 — The LFO is used to modulate the filter separation, creating a sort of phase-tremolo. Then, I change to an ADSR, which gives the sound a sort of “rising” sensation.
1:00-1:16 — Using the envelope follower to affect the rate of the tremolo.
