So I just got a new computer and I now have an extreme amount of clipping whenever PD outputs audio. I don't have any problems with any other audio programs clipping, and never had a problem with PD clipping on my old computer. Any thoughts as to whats happening???

I'm running Vista 64 bit if that has anything to do with it....

I have the same issue.

I don't know why this is and so don't have a solution, but it seems (to me at least) that a lot of people lately have had audio troubles with Pd and Vista 64.

I have vista 32 bit and I still have the same issue.

I am having the same problem, but i have managed to almost resolve it. After reading some begginer tutorials I made a simple oscillator with a pitch and loudness slider. The sound was cliping all the time even in the tutorial patches.Then I've set the delay in the audio settings from 100 msec to 200 msec which solves the problem, but only when loudness is constant. If I move the loudness slider up and down the same clipping emerges, even if I set the delay to 1000. If anyone has an idea what is going on it would be much appreciated. I am also using vista 64.

That sounds like a patching issue. You probably need [line~] to smooth it out.

[osc~]
|
| [hslider]
| |
| [$1 10(
| |
| [line~]
| |
[*~ ]

If you just take the outlet of your slider straight to [*~], you get sudden jumps in the audio when the value changes. Those jumps sound like clicks.

These are two different issues. The latest one - the oscillator which crackles - is probably there because the slider outputs a value at control rate, which is different than the sample rate at which the oscillator outputs. Since the oscillator outputs a pure signal without any harmonics the multiplication with control rate signals becomes audible. Trying inserting a [line~] object between the slider and the multiplication and it should be gone.

The other problem however is due to a rather bizar asio implementation of pd. Under the hood it uses portaudio as in-between but not in a very decent way. On windows it seems to be often a matter of trial an error and it depends of the combination audio-interface/pd-version. I'm on 0.42.5 extended and cannot get the asio drivers working with my motu, but i can with a presonus firebox. So with the motu i have to use the mmio implementation and also have to use a ridicule high latency.

Good luck with it,

D.

Thanks Maelstorm that helped.

domien: So what you are saying is iI need a better sound card?

No, like i said it seems to be a matter of trial and error with different soundcards vs. different pd releases (extended or not, current version or previous). I think my motu is a better soundcard than my firebox, but it's not working with extended 0.42.5.