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Subject:cutting spikes and peaks.
Posted by: theron3
Date:10/9/2001 10:05:52 PM

Hey all,
I have an acoustic guitar track that is solid but for one thing. It has three or four peaks in the wave that pushes the track to clipping. These peaks limit how high I can pan the track in the mix. I've tried compressing the track with small success and a loss of the track itself. Can Sound Forge 4.5 get rid of these intermitent spikes for me? If so, please tell me in detail how to go about it. I tried the trim.crop option and got nowhere. Please take into concideration that I don't really know what I'm doing. I'm an ignorant ball of clay so be concise and gentle.

thanks in advance,

Theron.

Subject:RE: cutting spikes and peaks.
Reply by: jgalt
Date:10/10/2001 4:54:37 AM

Thereon: I'm not an expert at this but I have a suggestion you can try until someone with more knowledge can advise you.

Locate the sound peaks in the displayed waveform that are causing the problem. Expand the trace until you can precisely locate the peaks - use the magnify tool in the lower right corner of the screen. Highlight (drag your cursor over) those peaks. Use the Process/Volume option to reduce those peaks by whatever amount you think is required and then re-normalize. Save your file with a name different from the original just in case something isn't correct.

Subject:RE: cutting spikes and peaks.
Reply by: pup
Date:10/11/2001 8:10:36 AM

Yeah. I know it doesn't sound too professional, but I was gonna suggest the same thing. Just drop the volume in the clipped areas to your liking, then re-normalize. Works for me. :)

- pup

Subject:RE: cutting spikes and peaks.
Reply by: sk
Date:10/28/2001 12:50:14 AM

My two cents worth - I do the same thing to help get more consistent normalized songs for cd compilations. If you've only got 3 or 4 spikes it shouldn't be a real big deal. If you ever need to edit a song with 10 or 20 or more you might use the "Find" in the "Tools" menu, and then "Find Largest Peak" (Maximum Value)from the pulldown menu. It's somewhat time consuming and maybe SF will come up with a routine to find the peaks and then reduce them to a certain value. In the meantime, doing it by hand does seem to work.
SK

Subject:RE: cutting spikes and peaks.
Reply by: beetlefan
Date:10/28/2001 1:44:40 AM

If you use RMS normalization in 5.0, you can set SF to compress the peaks if they shoot over 100% in the process. If you work in 32-bit you may not choose to do this.

Or, you can zoom in on the spike, highlight it, and compress it.

If you have the NR plug-in you can use the clip restorer if the spike is clipped.

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