[RESOLVED] The Notch filter don't want to work !

Audacity 3 Help Forum Windows
7

No it isn’t: the multi-tool in spectral editing does not allow you to input Q.
https ://manual.audacityteam.org/man/spectral_selection.html#multi

You are using “notch filter”, but commas are not acceptable to Nyquist plug-ins.
nyquist plugins use dot not comma.png