Monday, June 3, 2013

[Avid-L2] Avid audio mixdown summing math revisited?

 

Okay to review with two mono tracks of -20 tone if I am set to mono in the output tool and I do a mixdown the resulting track is -14 requiring a -6db mixer setting to bring the tone back to -20.  Same thing but with the output tool set to stereo or direct and the resulting summed track is at -17 requiring a -3db mixer setting to bring it back to -20.  Now I want to sum discrete tracks in unity with no summing pad happening.  My gut tells me to set the output tool to mono as that responds like I would expect with the tone summing requiring -6db mixer setting.  That math seems to jive with doubling a signal is =6db.  The summing in stereo mode doesn't seem to correspond to a unity summing that I'm use to. 

In particular I'm going to create a mix minus VO left and right.  I have all the discrete stereo stems on mono tracks for Left and Right Dialogue, Effect and Music.  I'm pretty sure working with the output setting in mono will yield a unity sum of all the tracks.  Can anyone confirm or deny my logic here?

John Moore

Barking Trout Productions

Studio City, CA

bigfish@pacbell.net

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