VSDC trying to reduce noise from camera in audio

[JytteC]

So, my camera records sound. Pretty low it is on the video. Then, when I turn up the volume, I get a lot of noise from the camera as well.
This is from my project:

[Attachment 48738 - Click to enlarge]
the spikes are bird song, the bottom constant level is noise from the camera (a lot!).
I figured there had to be a way to 'cut it off' (the lower part) so to speak, and only hear the spikes over a certain level.
So searched and found some video telling me to use audio effect, filter, gate. Doing that then...
Only, I'm not understanding any of the settings:

[Attachment 48739 - Click to enlarge]
As soon as I added this 'gate' all sound was gone. I kept turning the threshold down, until it was zero, and still no sound at all.
I just have no idea what to do with the rest. I did read the extensive description on VSDC's site, but understood none of it.
Anybody here who can offer some guidance?

[davexnet]

IT looks as if you have some good periods where it is just noise alone. You should be able
to get a good noise print and then use noise reduction.
If the program doesn't offer it, use Audacity, a free sound editor

[JytteC]

I have Audacity, but only ever used it for sound files. I would have to 'detacht' the audio to separate file, edit in Audacity, and put it back? Audacity doesn't handle mp4 does it?
Nah, tried, it won't.

[davexnet]

It handles it if you install the ffmpeg component
https://manual.audacityteam.org/man/installing_and_updating_audacity_on_windows.html#winff

[JytteC]

Ok, I'll have a look at that, thanks.