[PD] P4-optimized 0.40 vanilla precompiled for windows?

Matteo Sisti Sette matteo.sistisette at email.it
Wed May 2 12:36:27 CEST 2007


I'm having the "CPU jumps after a while" problem. That is, the same patch 
which at the beginning is consuming about 30% of CPU, after a while it is 
running (and absolutely nothing changes in it, and I am totally sure this is 
true) suddenly jumps to a CPU consumption over 70%.

I've read in the archives it is an issue specific to Pentium4, and that 
there is an optimized version of PD that solves it.

Is there a 0.40.x pentium4-optimized version of pd-vanilla precompiled for 
windows? If so, where can I find it?

Thanks a lot in advance

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Today's Topics:

   1. Re: Implementing "switch-and-ramp" technique to cancel
      discontinuities (hard off)
   2. Re: Implementing "switch-and-ramp" technique to cancel
      discontinuities (simon wise)


Message: 1
Date: Wed, 2 May 2007 18:28:18 +0900
From: "hard off" <hard.off at gmail.com>
Subject: Re: [PD] Implementing "switch-and-ramp" technique to cancel
To: pd-list at iem.at
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btw.  just found a bug in my patch.  corrected here:
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Message: 2
Date: Wed, 2 May 2007 19:14:30 +1000
From: simon wise <simonxwise at hotmail.com>
Subject: Re: [PD] Implementing "switch-and-ramp" technique to cancel
To: Frank Barknecht <fbar at footils.org>
Cc: pd-list at iem.at
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On 2 May 2007, at 5:35 PM, Frank Barknecht wrote:

> it only works if the discontinuity is one starting a zero
> again

isn't the book describing a way to switch from a playing wave form to
a new one which starts at zero?

The example refers to re-triggering something like a percussion
sample - it is a way to fix the glitch resulting from suddenly
cutting off the 'old' sample (which is likely not at a zero-crossing)
and replacing it by a new one (which starts at zero). The flowchart
shows adding a signal ramping to zero from the last value of the
'old' sample.

That is: the whole example/technique described depends on the
assumption that the re-triggered sample starts from zero, it doesn't
make sense otherwise.



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