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fade filter usage?

 
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Himiona



Joined: 17 Apr 2004
Posts: 1

PostPosted: Sat Apr 17, 2004 12:21 pm    Post subject: fade filter usage? Reply with quote

Hi ,

I'm new to TCL and Snack. I have written abasic app that does some batch editing on my MAC in OS 9.2.2

Is the fade filter available in the MAC OS 9 version of Snack?

If so, how do I use it, the manual doesn't seem to have the usage guidelines.

Cheers

Simon
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kare



Joined: 16 Aug 2002
Posts: 371
Location: KTH, Centre for Speech Technology

PostPosted: Mon Apr 19, 2004 4:09 pm    Post subject: Reply with quote

Somehow this info never entered the manual, I'll updated it it the upcoming new release.

Create fade filters like this
snack::filter fade direction type length

direction is "In" or "Out"
type is one of Linear, Logarithmic, Exponential
length is the length of the fade in milliseconds

apply the filter like this
s filter $f -start $start

assuming $f contains the filter handle. Note that $start should be given in samples here!

Kåre
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