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Subject:Time Compress does not work for small adjustments
Posted by: jdupre
Date:11/9/1999 11:50:00 PM

I am trying to time compress a file by a number of
milliseconds, but SoundForge seems to only allow changes of
100ms or more. Even when I change the units to samples, no
compression happens unless the length of the file is
changed by more than 0.02%. How do I make very very tiny
time compress changes?

- Joe

Subject:Re: Time Compress does not work for small adjustments
Reply by: JF
Date:11/10/1999 10:13:00 AM

Joe,
There is a certain amount of "slack" in the output size of the time-
compressor in Sound Forge. The amount of slack depends on the Time
Compression Mode being used, and can vary from a couple of mS to
around 100 mS.

The easiest ways to decrease the size of a file exactly by several
milliseconds are:
1) if possible, make a very small cut somewhere, trying to match zero
crossings.
2) Use the Pitch Shift function(without preserving duration). A ratio
is displayed at the bottom...and depending on the length of the file,
the pitch shift necessary should be only a few cents.

John

Joe Dupre wrote:
>>I am trying to time compress a file by a number of
>>milliseconds, but SoundForge seems to only allow changes of
>>100ms or more. Even when I change the units to samples, no
>>compression happens unless the length of the file is
>>changed by more than 0.02%. How do I make very very tiny
>>time compress changes?
>>
>>- Joe

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