How to Key-gate using the Peak Controller and Mute plugins
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Heres a neat way to get one sound to sync to another using the volume coming through one FX channel (FX channel 3 here) as the source to control a mute plugin on another (FX channel 2).
Whenever a loud enough sound comes through on FX 3, the sound on FX 2 will be unmuted.
TUTORIAL:
1, Give the Gate Target its own FX channel.

2, Give the Gate Source its own FX channel.

3, Insert a 'Fruity Peak Controller' on the Gate Source's FX Channel.

The Peak Controller picks up the signal and converts the peaks of the volume into controller data which you can use elsewhere to push buttons and turn knobs. We will use the Peak Controller in this case to turn a simple mute on and off to give the effect known as 'Key Gating'.
4, There is a mute on the Fruity Peak Controller on the bottom right, if you want to be able to hear the source signal, turn this off.

5, Insert a 'Fruity Mute 2' plugin on the Target FX channel

6, Link the Fruity Mute's ON/OFF knob to a Controller by right clicking and choosing 'Link to Controller...'

7, Click on Internal controller where it says '(none)'.

8, Choose 'Peak ctrl - Peak' from the menu.

9, Click OK.

10, Click Play and change the 'Base Level' to adjust it to swich ON&OFF when needed.

11, Change Peak Tension & Peak Decay Speed as needed.

12 , Don't forget you can send the notes from the source's step sequencer pattern to the piano roll for more accurate control.


