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 Forum index » Instruments and Equipment » MAX/MSP - Pd
question about time warping a sample ?
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Nth L0gik



Joined: Jul 07, 2007
Posts: 71
Location: near DC,USA

PostPosted: Sun Apr 25, 2010 10:09 am    Post subject: question about time warping a sample ? Reply with quote  Mark this post and the followings unread

hi .....

to anyone out there, i might have asked this before but i'll ask anyways.
i'm trying to figure out how to time stretch a sample while preserving the pitch. i've reviewed just about all the tutorial and none of them seem to help.
i know max can do this ..... i've even reviewed the modsquad redux, it comes close but no cigar.
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pemdasi



Joined: May 09, 2010
Posts: 19
Location: richmond, va
Audio files: 5

PostPosted: Sun May 09, 2010 2:43 pm    Post subject: Reply with quote  Mark this post and the followings unread

Have you looked at the granular synthesis tutorial patches? I know there are a few in PDs vanilla install.

What it comes down to is that you load a sample into a wavetable, then use a phasor object to move the start position through the sample, taking the output of that phasor to drive another phasor to loop through a smaller section of the sample. This way you are looping small sections (grains) of your sample that change over time. With carefull adjustments to the grain size/speed you can alter the time of a sample while retaining the pitch.

Hope that helps some...
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emSynth

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