Dear List,
I just want to add one comment to the latency issue in pd. I understand that there is a big advantage in using portaudio in pd. I am very glad that pd runs on any platform I've run across so far, but investing a lot of money into fast computers (to achieve low latency) is a serious matter I am indeed willing to do. On the other side, what does high cpu power help, if the lowest latency i get on is approx. 30msec? (I don't know if the low-latency kernel-patching people under linux are achieving better results). I'd like to be able to use pd in all those situations where you need lower latency, like realtime processing of acoustic instruments, dj's, and whatever is implied by the term "realtime". I feel strange by asking for other possibilities than using Portaudio, since I appreciate very much all programming work everyone has done in the community, which would not be available to all users of different platforms. I'd just like to hear the opinions of some people on the list, and I just don't want to be caught using max for running patches which require latencies lower than 30msec. I am so glad to use pd!
Keep on the discussion, let's make pd even better!
thanks! have a nice week! Peter_P
Hallo, plessas@sbox.tugraz.at hat gesagt: // plessas@sbox.tugraz.at wrote:
I understand that there is a big advantage in using portaudio in pd. I am very glad that pd runs on any platform I've run across so far, but investing a lot of money into fast computers (to achieve low latency)
High CPU power is not (that) important in regard to low latency. You can get really good latencies with simple and slow CPUs. You just will not be able to do really complex computations in short time. But the latency.pd patch for example does in no way require a fast machine nor does it run any better on a faster than on a slower machine because of CPU speed.
I feel strange by asking for other possibilities than using Portaudio, since I appreciate very much all programming work everyone has done in the community, which would not be available to all users of different platforms.
The problems at hand are not the fault of Portaudio and they will not get fixed by just ditching PA. You can get *very* low latencies with PA, as low as the hardware allows. There just are "issues" with non-reatime tasks inside Pd...
Re. Linux: You can get lower latencies on Linux than on Windows, that's true. CoreAudio on OS-X is even better.
ciao
Frank Barknecht _ ______footils.org__
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Frank Barknecht -
plessas＠sbox.tugraz.at