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Wirecast Audio Meter Scale?

I'm curious about the Wirecast Audio Meter scale.

The meter goes to +6. I'm assuming +6 dB, but it doesn't say. 

The distance from 0 to +6 is much less than between -0 and -6 (and there are eight hash marks from 0 to -6, to be picky about it).

In the digital systems I'm used to (Audition, Premiere Pro, Audacity, Pro Tools), the meters are calibrated in something called dBFS (deciBels Full Scale), where the loudest sound is Zero dBFS. The top of the meter is zero, and everything is a negative number below that. That makes sense, as there is no overshoot, no possibility of anything louder in a digital system.

OTOH, my Behringer X1622 mixer's meter is calibrated to +10. It has both analog and digital outputs, so I can kind of understand the need to emulate the old VU meter. 

I've experimented a bunch to get the compression and gating I want from the Wirecast Mixer and Dynamics FX. When I output to an mp4 file, and bring that into Audacity or Audition, I need to keep my audio peaks somewhere near... um, three hash marks below 0 to make an audio file in Audacity that peaks around 0 dBFS. I need to do more playing with that to report more accurately.

Before I ramble on (about things like the broadcast TV industry wanting their audio to peak around -10, not 0 dBFS), I wonder if there are some explanations and technical details about how Wirecast set up the audio mixer and meter calibration.

And if anyone else either understands it all, or is baffled by it, too.

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  • We really do need to explain the scale especially when people need to compare to other audio programs or hardware being used.

    Please do make the feature request for a "professional" explanation of our meter scale.

    Wirecast Feature Request Form

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