ACX Check Plugin for Windows 10

Hey All - I’m new to the forum and need some help. I am using windows 10 and was instructed to download the ACX Check plugin and drag the download to my Audacity Plugins folder, which I was told for the PC would be under the Programs menu and then enable the plugin by going to Effect menu and select Add/Remove Plugins and check that it is enabled.

I cannot find the Program Menu anywhere. There are several tabs at the top when I open Audacity and the last four have Add/Remove Plugins but I have no idea where to drag the download. I’d really appreciate some direction on where to find the Programs Menu so I can add this plugin.


The ACX Check plugin is a “Nyquist plug-in”.

The latest version is here:
This version replaces older versions which do not run properly on recent versions of Audacity.

Installation instructions for Nyquist plug-ins on Windows:

DB measurements seem to be “upside down,” but they’re actually sizes of negative numbers. More negative is quieter. I drew a quick reference graphic.

Home readers never pass noise. Nobody’s home background noise is a thousand times quieter than a voice.That’s what -60dB means. The Metrobus in front of my house is enough to wake somebody up. That would never pass a chapter reading. So that’s what many readers hit first.

ACX Check looks for a half-second of good, clean, quiet background sound and measures that. So the rest of the show could be a noisy wreck, but it will “pass” ACX. That show is not normal. Nobody’s performance actually does that. That’s broken and it will fail other audiobook tests.

Nobody can read directly into audiobook standards. The best you can do is get close and then use our mastering tools to get you the rest of the way.

Let us know when you get that far.


Thanks, Steve! I was able to install it!