Hello!
I am working on some kind of modular pedal concept. The Idea is to have VCA's LFO's envelope followers, sequencers, delays with different inputs/outputs to controll each other.
For example you could do a simple tremolo with one LFO controlling a vca. But then you can controll the first LFO with another one so that the speed changes according to the second... the LFO speed can also be controlled by an envelope so every time you hit a note the tremolo is going from fast to slow or viceversa.
Here are some videos to show what its all about:
1) This is a basic PT2399 delay. The Time is controlled by a 10 Step sequencer (CD4017 circuit). It can go from weird pitch shifting Vibrato to subtle chorusish sounds. It also has an output from the sequencer signal and an controll input for the sequencer speed.
[youtube]https://www.youtube.com/watch?v=nWvWzKZlO7M[/youtube]
2) Here's a ducking effect. It is done like that: The "Bassdrum" (coming from the boss loopstation) goes into the envelope follower (based on the mu-tron follower section) the envelope signal controls the VCA which squashes the guitar signal. The VCA is done with the Coolaudio V2164 chip using only one channel.
In the video you see these boxes from left to right: loopstation as the bassdrum source - envelope follower - one LFO - a second LFO - VCA (on breadboard) - to the far right you see a simple true bypass switch to bypass the VCA.
Link
3) Again the VCA, but now it is controlled by the first LFO, so it's a tremolo. Later, the second LFO varies the speed of the first one, so it is alternating between two pre-set speeds. In the end, the envelope follower is controlling the first LFO. Every time the bassedrum is hitting, the tremolo starts from a fast to a slow rate.
Link
It's all very prototype-ish, still a lot of work in progress... what do you think of it?
best,
David