Hi,

I got a DTS CD music file. I noticed that there were 2 popping noises in it. Wanting to isolate the origin of those noises, I split the file into 6 mono wave files using Tranzcode. The noises are present on both LS and RS channels. I was hoping I could then edit them out using a wave editor. That is not the case.

The mono wave files are 44100 Hz Sample Rate, 32 bits, 1411 kbps, PCM (floating-point). I've tried Nero Wave Editor, Creative Wave Editor and Gold Wave Editor and none support this type of wave file.

Can I do this somehow?

Any help would be appreciated.

Thank you.

Audacity or Cool Edit would probably help you.

What actually do you want to do?
Edit - cut, delete parts of the sound or
filter - change the frequency content of some parts of the sound.
I could help you somehow if I knew.

Hi SpasV,

I want to delete the noises and fill in the gaps with copies of other parts of the tracks that will blend in seamlessly and keep the same lenght.


Nick C. I'll see if I can get my hands on Audacity or Cool Edit and give it a shot but if they're ordinary wave editing tools, I doubt that they'll be any different.

Thanks for the replies

CoolEdit is a very good tool, and Audition (which is how CoolEdit was renamed after being taken over by Adobe) is even beter, although rather bloated. Audacity is not so bad either.

How long is the noise?

Why not use 44.1 kHz 24 bit files (if that's possible with Tranzcode)? That will give you plenty of choice for a wav editor and the sound quality wil probably be identical.

One is 1 second long and the other is 1.5 second long.

I don't know about Audacity, but CoolEdit/Audition converts everything to 32bit floats internally before it does anything.

Which means long. Now, how you treat it depends on what kind of noise is that: wide band or narrow band, stationary or changing, overlapping witn good audio in frequency domain or not, what is its relative level. There are varous tools in Audition to deal with noise, such as simple cut and paste (you would have to paste identical audio from elsewhere, it may be the only solution sometimes), several varieties of noise reduction, center channel extractor (may help if the noise or the good audio is well defined in the stereo panorama, probably it is not), and frequency space editing to apply treatment only to a selected time/frequency area.

Audacity surely has cut and paste, it also used to have a not so good noise reduction. Things may have changed however since I used it last time.

Is there any chance that you post a sample?

Ok I think I pulled it off.

I converted the surround wave files to 24 bits as advised by pawelq and was then able to edit them in Nero Wave editor. I zoomed in on the noises and cut them out. As it turns out they were much shorter then I originally thought. In the end there is only a 36 ms to 83 ms difference between the original files and the altered ones. I took a chance and re-encoded them in DTS along with the other 4 wave files and burned it on a CD-R. Sounds great to me. At this point I'm only wondering if I should bother converitng the other 4 (FL,FR, C and LFE) to 24 bits or re-convert the surround wave files to 32 bits so they all have the same bitrate.


Many thanks to all who threw in their 2 cents.