TRG-1 in action.

After much faffing with far to many components I’ve finished the circuits used to control the VCF (Voltage Controlled Filter) of my Juno.

Here are a few samples with the TRG-1 being triggered from my TR-707 drum machine and taking a control input from my Expression pedal. The TRG-1 is then providing the Trigger and VCF Control signals to the Juno 6.

First we have just the Juno on its own.

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Next we have the Juno being controlled by Channel 1 of the TRG-1

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And finally the Juno being controlled by Channel 2 of the TRG-1

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I still need to make a few modifications to the envelope generator of Channel 1 but so far I’m happy that the unit does everything I intended.

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    1. […] audio input and produce a trigger pulse alongside a simple Attack/Hold/Decay envelope. The TRG-1 was my prototype test circuit for […]