# FR measurements of tape machines **URL:** \ **Category:** Uncategorized\ **Created:** [April 30, 2023, 6:46pm UTC](https://forum.quantasylum.com/t/fr-measurements-of-tape-machines/875 "2023-04-30T18:46:38Z")\ **Posts on this page:** 1\ **Showing post:** 19
**Author:** ![matt](https://avatars.discourse-cdn.com/v4/letter/m/a6a055/32.png) [@matt](https://forum.quantasylum.com/u/matt)\ **Post date:** [October 29, 2023, 7:18pm UTC](https://forum.quantasylum.com/t/fr-measurements-of-tape-machines/875/19 "2023-10-29T19:18:38Z")
Hi @DeAl66, currently there isn’t a way to collect an acquisition of test tones and convert that to a frequency response plot. For W&F, there’s not any weighting currently applied. More info at the link below. Note that the W&F follows the AES6-2008, just minus the weighting. > [@Wow and Flutter measurements visualizer](https://forum.quantasylum.com/t/wow-and-flutter-measurements-visualizer/140/2): > > Hi @voltist, It’s not intuitive because it’s hard to see, but in the upper left of the wow and flutter tool there’s a help button that will open in your browser a small HTML file of help on the tool. I’ve pasted that below. The two-sigma value is twice the standard deviation. Wiki notes: “Physical scientists often use the term root mean square as a synonym for standard deviation when it can be assumed the input signal has zero mean, that is, referring to the square root of the mean squared de… --- _[View the full topic](https://forum.quantasylum.com/t/fr-measurements-of-tape-machines/875)._