Help With Voice Quality Post-Processing (AT2020)

Nah, it’s my AC. Here’s with it off. You can hear the “click” when I say “thanks” at the end.

The mouth-clicks can be removed using this DeClicker plugin
suggested settings to remove mouth clicks.png

The only control to experiment-with is “sensitivity threshold” : use the highest value which removes the clicks.

[ DeClicking is slow: with those settings it will take approximately the same time as playback-time to process the audio].

Did that help?


That’s amazing. Your settings basically fix’d it.

Thanks very much!

Would either of you recommend using any other post-processing on my stuff? A compressor or something?

When I get home. I’m going to send you through the AudioBook Mastering suite. With the noise and clicks gone, I expect it to pass.


The DeClicker hasn’t got them all: the settings above are a trade-off between speed & accuracy.
Sometimes fixing the clicks manually (individually) is the only cure …[b]“spectral+edit”+tool[/b]

OK. Tell you what. Make one of these:

… apply one pass of the clip and pop removal of your choice and post it here on the forum. Don’t do anything else.

If you do mono (one blue wave) you can take it out to 20 seconds. The two-seconds of room tone is important. Don’t move and try not to breath.


OK. Tell you what. Make one of these:

This is unedited except for the declicker and settings Trebor posted.

The fan-noise goes across most of the sound spectrum : rather than just a few discrete frequencies.
So removing it, (with noise reduction), inevitably damages the voice …

The ideal solution would be get away-from / rid-of the fan.

[ Audacity does not come with a Noise gate , you can get one here ].

That sounds great. Could you walk me through what steps you took to get it sounding like that? Unfortunately the fan is from my computer so I can’t really escape it.

The “Noise Profile” is the “2 seconds of silence” bit at the end where you weren’t speaking.
suggested noise-reduction settings.png
Then use the noise-gate to reduce the noise between words & phrases …
suggested noise gate settings.png
NB: that’s reduce (by 10dB) rather than eliminate it, as dead-silence between words is distracting.

How’s this?

Is there anything else you guys would recommend or do you think I’m set?

It sounds perfectly pleasant to me except for the laundromat in the background. Straight Audiobook corrections fail noise and it’s not easy to get rid of it even after I started to throw heavy corrections at it.

You know when you’re in trouble when the corrections start needing corrections. Heavy noise reduction will pass ACX, but just barely. I applied a Notch Filter to get rid of the one single electric motor tone (120Hz—you’re in the US, right?) and that threw off the ACX Peak reading. And round and round…

I’m posting the work I got after simple ACX corrections but before Noise Reduction. Turn the volume up on the last two seconds. I’m not kidding. I have a laundromat that sounds exactly like that.

This is the tool collection I’m following.


“Can’t make it through 20 seconds…”

That’s practice. No, it’s not that easy.


Side note: I would have no trouble listening to a story in that voice. We just have to lick the noise.

When the yellow light comes on, put the fabric softener in.


It seems a bit quiet. I would use RMS normalize to ~21dB…
Suggested 'RMS Normalize' settings  (it's a plugin).png
then Audacity’s native limiter, which will to reduce the volume of any loud bits …
suggested limiter settengs (to be applied after RMS normalize 21dB).png
Then the (optional) final step is DeEssing to reduce excessive sibilance …
suggested DeEsser settings (another plugin) this is the final step.png
Once you’ve perfected the settings on the various effects you can Chain them togther to automate the processing.

I would use RMS normalize to ~21dB…

RMS Normalize in the correction suite is -20dB which is even louder yet.

In my opinion we should wait for polished fine tuning until the noise is licked. Stiff Noise Reduction can cause response and essing problems.


I bet I can predict the past.
Can you tell if your computer is on just by listening?

These don’t make a lot of noise. The ACX guy whose name I don’t remember is using a formal sound room on the bottom. I’m on top. Furniture moving pads are fine with me.

You can tell when these things are running, but you have to smash your ear up against the lid hinge.


This is the final result (I think). How’s it sound?

I went in order,

  1. RMS Normalize
  2. limiter
  3. de-esser
  4. de-clicker
  5. noise reduction


I appreciate the suggestions but I rather just suffer the quality loss than alter my recording setup.

Thanks a ton to both you, Trebor and ofc the plugin creators for all your help. My audio sounds way better than my first post, even if it’s still not perfect. Imma go make content now, but I’ll check back if you guys have any last minute suggestions.

If you got a correction process that works and you’re happy with the sound, that’s what counts.