I made a video of me taking my grandson on a canoe ride, using a Gopro with a bare housing to get as much sound as possible. The audio portion of it has a static-hissing sound to it, so I rendered the audio track only to a .wav file and am wondering if I can use Audacity to take most of this hiss out without making the voices sound like they’re talking in a pipe, which is what happened when I tried to filter the video in Sony Vegas.
I can upload a portion of the sound file if that helps.
Also, there are times in the video where there are loud “thumps” from me brushing the canoe with the paddle that travel through the canoe and into the camera. If I could lessen the volume on these without affecting the voice that would be great, but I’m mostly just concerned about the static hissing, I can live with the loud thumps if i have to.
I am using windows 10 but will probably do the editing on my windows 7 machine with the latest version, because I see I may need extra audio drivers for windows 10 so I may as well keep it simple and use windows 7
You can try [u]Noise Reduction[/u] but if the hiss is bad the results may be no better than you’re getting with Vegas.
FYI - Hollywood on-location movie dialog is re-recorded in the studio and sound effects are re-created because even with pro software there are limits to what you can do.
Also, there are times in the video where there are loud “thumps” from me brushing the canoe with the paddle that travel through the canoe and into the camera. If I could lessen the volume on these without affecting the voice that would be great
You can use the [u]Envelope Tool[/u] to fade-down the audio during the thump, but of course that will also fade-down any talking that’s happening at the same time.
If the thump is low-frequency you can try a high-pass filter or equalization to knock it down with not too much effect on speech. (Try reducing/filtering-out frequencies below 200 or 300 Hz.)
Worst case, fade it down to where it’s not annoying and add a subtitle. Or, re-record that part of the dialog and mix it with some natural background sounds from another part of the recording.
Thanks - usually I use the Gopro for aerial only so sound isn’t an issue - had I known the GoPro 3 had issues with hissing I would have used one of my Sony action cams. I did manage to get some of the hissing with Audacity out on a short clip I did earlier, but I forget exactly how I did it.