ASX Check not loading in Audacity

Please note ACX Check (not ASX Check) can be faked out.

It looks for a half-second of room tone (room noise without you) to measure for Background Noise. If it doesn’t find it, it measures as close as it can get. Background noise in that case may be wildly noisier than it really is. Since Home Recordists and audiobook readers routinely fail noise, this could be important.

We published an AudioBook Mastering Suite of production tools.