"Meindert Sprang" wrote in
message
Hi group,

I have made a video/audio recording of a musical and
during editing we found that the rented camera had a
faulty sound channel, resulting in a too low sound level
of the singing children, a rather high noise floor and
50Hz mains hum.


What are the best tricks to make somethig
useful of the sound recording? I have Audicity and Cubase
LE available. A quick run noise removal that trains on a
quiet part of the recording results in a cell-phone like
effect (comb-filter?).

(1) Load the recording onto a PC as an A/V file.

(2) Extract the sound track into a .wav file that you can process with
standard audio tools

(3) Notch out the 50 Hz hum and harmonics with narrow-band filters. I use
the ones in Adobe Audition, and they are at 60 Hz because I'm in the US, but
you get the picture.

(4) Amplify various segments as required to get the levels you want

(5) Use standard noise-managment and reduction tools to supress noise if (4)
makes the recording too noisy in places.

(6) Plug the revised sound track into the A/V file.