What is this noise? (image)

[Trebor]

@dev

Are you using an extra plugin? Notch Filter doesn’t do the same when entering 50.68 Hz and going down to 0.1 with Q.
(I don’t understand what I’m doing, I understand Hz but not Q and don’t know the frequencies of harmonics)

150 notches are required: the odd multiples of 50.68 Hz , i.e. 50.68 Hz, 152.04 Hz , 253.4 Hz, etc

Below is a hacked version of Steve’s plugin which will make all of those notches …
de-hum 50point68Hz.NY (2.19 KB)
Install the plugin, then apply it to the affected audio without adjusting any of the settings.