how can I downmix stereo to mono?

[Peter Dirk]

Hi I want to put a stereo to mono downmix at the end of my EQ APO chain, how do you achieve this with the native tools? I know that peace can do this but I use peace already at the beginning of my chain.
A screenshot would be appreciated to make it easier to reproduce ^^'

Thanks for any help.

[Peter Verbeek]

100% mono downmix:

Copy: MONO=0.5*L+0.5*R
Copy: L=MONO R=MONO

As you can see it's about creating a virtual channel and use this further on.

As you're using Peace you can "steal" commands from its Commands window. In the "Created by program" section pop up right click menu -> Select all -> Copy.

[Peter Dirk]

Okay and where do I put this line in? A screenshot would be helpful ^^

[Peter Verbeek]

You're using VST plugins, aren't you? If not then it's about putting the lines in the lower section on the Peace Commands window. If you do use VST's tThen it's about putting the lines at the end of all other ones, for instance in the config.txt file or your specific device include file. Note that you need to add a device selection command if you haven't already. The commands can be entered either in the Configuration Editor or in a text editor. As reference I've made a screenshot of the Configuration Editor. In this case I made my headphones mono.

A neat trick for copying the 2 commands to the Configuration Editor. Add any command and click the small text icon if it's be shown. If not click the small down arrows. Now it's a matter of pasting a (textual) command over the existing command.

[Peter Dirk]

Okay thank you, now I get it ^^
What is the difference between having this two actions in a chain or having only this one?
Copy: L=0.5L+0.5R R=0.5L+0.5R

[Peter Verbeek]

In principle this one action should work. In the past I had issues with this combined action so I always tend to use virtual channels to be sure everything works as designed.

[Peter Dirk]

I made a stereo test file and recorded both solutions, the result looks the same

[Peter Verbeek]

That's great. You're now in the ball park of an experience user 😃

[Peter Dirk]

Thanks for guiding me through this :D