thanks answering that fast Tim. I put the pd-0.38-4-devel-2 version on my computer and i managed reaching a very low latency. I'm now wondering about the stability of this pd version, do you think i can make live with this version? (i've already got some fatal errors...) And there is a thing that i don't understand : on my other computer i have a terratec MT88 with asio drivers that perfectly works with pd 0.37.3 (i have a latency of 5ms on this computer). Do you know why? And a last question : when do you think this work on the portaudio and asio driver that have been down in this "devel pd" will be integrated in common pure data releases. Again, thanks a lot for your help. Cheers.
From: Tim Blechmann TimBlechmann@gmx.net To: "guillaume rabusseau" gr_wip_pd@hotmail.com CC: PD-list@iem.at Subject: Re: [PD] ... M-audio and pd asio problem Date: Sun, 18 Sep 2005 18:43:00 +0000
I have a problem with my sound card, which is a m-audio firewire audiophile. I can't manage reaching a low latency in pure data : When I use shareware like fruity loops or Live Lite, the shareware automatically detects the buffer size i have specified in the control panel of the sound card and tells me what latency it gets, with a 256k buffer size i have a 5 ms latency (which is good for me).But in pure data, using the M-Audio FW Asio driver, as soon as I try putting a latency less than 60 ms, the test tone becomes very dirty, with a lot of discontinuities. I have tried a lot of combinations with -audiobuf -blocksize... but i simply don't manage to do it. If you have some ideas i would be very glad.
this is a known problem with pure data's portaudio interface. pd is not able to run with low latencies on osx/windoze ... using jack / alsa the situation is better.
the developer branch contains some changes in the scheduler that allows pd to run with low latencies with portaudio. i'd suggest you give this a try ... there are some binaries on sourceforge for windows ... no 0.39 binaries, though ...
cheers ... tim
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