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

[Matteo Sisti Sette]

I've read further and searched the archives of the list.

Is this related to denormals?

Isn't pd now handling denormals correctly? (that is, avoiding them)
I mean vanilla 0.40.

I ask that because I've seen discussion dating back to 2003 about this 
issue. Is it still an issue?

Another thing I don't understand is why that is a problem only in pentium4: 
don't other processors have denormals as well?


thanks
m.



----- Original Message ----- 
From: "Matteo Sisti Sette" <matteo.sistisette at email.it>
To: <pd-list at iem.at>
Sent: Wednesday, May 02, 2007 12:36 PM
Subject: P4-optimized 0.40 vanilla precompiled for windows?


Hi,

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
bye
m.


----- Original Message ----- 
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Sent: Wednesday, May 02, 2007 12:00 PM
Subject: PD-list Digest, Vol 26, Issue 7


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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
discontinuities
To: pd-list at iem.at
Message-ID:
<161320dd0705020228o35662cf8o41fdd4a8f7e2e59f at mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"

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
discontinuities
To: Frank Barknecht <fbar at footils.org>
Cc: pd-list at iem.at
Message-ID: <BAY140-DAV96C1341392A3175FB37E2C9420 at phx.gbl>
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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.


simon





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