Less.
ACX Audiolab doesn’t check noise.
By that I mean they used to provide a human review of your work, signed by the reviewer. It is suggested that they would palaver with you as to the best method of solving your problems. No. You got one review, full stop. Now it’s your problem.
“Dear Koz. Your mouth noises suck. Have a happy day.” It was more involved than that, but I didn’t give up the day job.
What it meant to say is the Absolute Blackness of Space, Dead Silence you stuck in there isn’t natural. When you take a breath, you’re supposed to get natural room tone, background sound. And yes, that’s where Punch-Paste, etc come in.
A few notes about how 36Audio… works.
36Audio… is a Macro which in this case is a call list of existing tools. It’s not a tool. It’s a recipe. It’s named “36Macro…” because one of the Audacity application updates scattered the tools in its list. From memory, version 36. It’s like going to the credenza for your spatula and it’s not there. “What do you mean the Limiter Tool isn’t there any more?” !@#$
The very first thing 36Audio does is apply a Rumble Filter. This is from Broadcast/Field Recording experiences. Thunder, earthquakes, large trucks, wind, etc. Gone. If a large portion of your natural background noise happens to fall into that category, your ACX-Check noise value will do some amazing things.
Then it applies a volume boost (or dip) so ACX-Check RMS (loudness) comes out right. Note, it makes one overall adjustment. It doesn’t try to follow your voice or the theatrical presentation.
That adjustment might force some tips and peaks of the performance to exceed 100% (1.0). That’s the point where the performance starts making up its own harsh sounds (ticking and popping). So then 36Audio applies a gentle Peak Limiter to gracefully squeeze just the tips and peaks into ACX submission.
Yes, that does change the RMS (loudness), but never enough to matter.
36Audio doesn’t do a thing to the noise. It guarantees RMS (loudness) and Peak standards. If you recorded in a quiet, echo-free room, you may be done.
Just as proof of performance, I recorded a voice test in my quiet office on my phone.
I cut it down to size, applied 36Audio… and it passes ACX-Check.
But it’s close. Being obsessive, I applied gentle Noise Reduction of the Beast (6, 6, 6).
One of the goals of 36Audio… is that the finished work sounds exactly like me.
Koz