Camtasia includes a simple but efficient noise reduction function. You can find it in the audio effects section and if you apply it to a clip, it attempts to detect, analyse and remove background noise. Watch this tutorial to find out how to use it.
Try Camtasia for free here:
https://graphicious.co.uk/camtasia
Graphicious website and blog:
https://graphicious.co.uk
Graphicious on Facebook:
https://www.facebook.com/graphiciousdesign
#camtasia #videoediting #noisereduction