Do you want to delete the whole audio from your home video and replace it with something else or do you want to do as you describe "delete background noise on home video"?
If the latter, a lot will be dependent on the nature of the background noise? Have you worked with any of the audio effects under fxEffects Tab/audio effects.
Please see the description of the audio effects described under "audio effects" in the above Adobe document on Effects Reference.
If one of these noise removal audio effects does not work for you, you might explore Noise Reduction in the free audio editor Audacity.
We will be watching for your review of the above and your results.
I will be out of town for the rest of the week so will get back to this project next week. I have downloaded the audacity but only took a quick look at it and will also review the adobe help site suggested. The data transfer from the camcorder includes a background hum that I need to at least lower in volume, retaining the voice conversations taking place during the filming.
Thanks for your quick response.
Thanks for the follow up.
We will be looking forward to your results when you schedule permits.
Thanks for considering the suggestions.