I applied the suggestions
Videomaker – Learn video production and editing, camera reviews › Forums › Technique › Sound › Removing room noise › I applied the suggestions

I applied the suggestions given. The end product, when shown on a television or played in a DVD drive on the computer, came out quite nice. We turned the volume way up on the computer’s speakers and the sci-fi squeaks could barely be detectable. Just 2 of us who knew of the problem recognized that it was there.
However, when it was played from a laptop hooked to a television set with the audio coming through a serious setup with large speakers and sound system, the system channeled every single sound through!! 😮 (!)
Just shows that my journey into the techniques of videomaking has only just begun!!!