Help stripping part of audio track

[EAO]

Captured A/V mpeg2 ST TNG TV show. On G4 they are 'promoting' the show by displaying a visual and audio insert 2 or 3 times while the episode is running.

The insert lasts about .610 seconds and they overlay the regular soundtrack with the Star Trek communicator noise at the beginning and end.

Is there a way using Goldwave (my pref) or any other program (inexpensive) to remove the communicator noise while keeping the dialog... and maintain the proper tonal quality of the dialog afterwards?

I currently delete the communicator noise and replace it with a background engine clip of the same length (basic copy/paste.) It works very well 7 of 10 times - pretty much avoiding meaningful dialog. But the other 3 times...

For anyone not familiar with the noise... it is high pitched. I have tried to change the bandwidth to eliminate that noise range and I can do it but it muffles the voice dialog. I do not know how to take the dialog and convert it back into a good tone without reintrducing the communicator noise.

I can live with my current edit methodology but I wouldn't mind learning a new trick or two if someone knows how to do this.

[mikiem]

AFAIK it is possible, but you'll probably need to spend some time reading up on editing & then working with the files, IMO anyway.

As the freq of the sounds overlaps, limiting the noise also pulls those freq from the desired dialog. If you can find a sample with just the noise it'll work better, but assuming the noise is louder then the dialog, noise removal might help by not just reducing freq. bands across the board, but rather pattern matching. Restoring freq to dialog might take up most of your time.

[kschang]

You may have better luck copying background noise from the rest of the scene then "smooth it over" that section you don't want, rather than a generic background noise.

[EAO]

Yup. Done that when the background noise was noticably different.

The background noise I'm using is the Star Ship's engine noise and it didn't take long to realize that it's in at least 70% of each episode, so it's works out 9 out of 10 times really well.

I can easily get a 'clean' sample of the communicator noise, but as to how exactly to reverse/neutralize the sound... I'm a newb.

Did some trial and error but failed. I'm sure there is a way but I have no idea what tools to use. What order, etc I can tell you that at worse I'll keep hammering away at it through trial and error. I was just hoping for a little shorter path.

[spiritgumm]

EAO - I just started a thread inquiring how I could insert 5 seconds of audio- I have an audio glitch on a dvdr. Can you reply there how you do it?