# intermittent background noise **URL:** \ **Category:** Windows\ **Created:** [January 18, 2018, 2:38am UTC](https://forum.audacityteam.org/t/intermittent-background-noise/47966 "2018-01-18T02:38:47Z")\ **Posts on this page:** 1\ **Showing post:** 33
**Author:** ![kozikowski](https://forum.audacityteam.org/letter_avatar_proxy/v4/letter/k/919ad9/32.png) [@kozikowski](https://forum.audacityteam.org/u/kozikowski)\ **Post date:** [February 1, 2018, 2:30am UTC](https://forum.audacityteam.org/t/intermittent-background-noise/47966/33 "2018-02-01T02:30:55Z")
> learn some audio engineering There isn’t a lot. I had to get techie when I listed the numbers you have to type into the blank boxes when you run the tools. And given you record in a nice, quiet room, there are only three tools. Rumble filter, general volume and overload safety. I wrote a mostly English explanation of what they are. > [@Measure between -23dB and -18dB RMS.](https://forum.audacityteam.org/t/measure-between-23db-and-18db-rms/32770/16): > > English version of the ACX readings. Peak. Look at the blue waves on the timeline. The very tips of the waves are never allowed to go all the way up or down. That’s overload (1.0 on the timeline – 0dB on the bouncing sound meters). That can cause audible crunching and distortion. ACX doesn’t even want you to get close, so that’s their -3dB (70%) limit. RMS. Loudness. Root Mean Square is a standard electrical measurement which, when applied to audio, happens to work out to loudness. RMS s… Further, the values stick, so you only have to type them once. I’m not the only one. There was a poster recently using different spells, and they managed to pass submission after minor adjustments. Koz --- _[View the full topic](https://forum.audacityteam.org/t/intermittent-background-noise/47966)._