Hello everyone. Thanks for reading.

I have been using Pure Data for about a year now, but I am still pretty much a newbie. I'm using PD portable 0,49.0 on a windows 7 PC. There are some issues with audio which I get and do not understand. For starters, if I have a patch opened that contains an osc~ object I get a click and a high, constant (although not loud) tone every time I turn on DSP. I do not get this with patches that do not use osc~. Also, when I use the line object in my patches, for instance to control gain (fade in and fade out) I get some minimal clipping too. The funny thing is, when I use the writesf~ object to record a wave sound the clipping I hear when using is not recorded. I'm pretty sure it must be some issue involving my hardware and settings, but I have not been able to find it. I did try to increase latency but it didn't solve anything.

This is a screenshot of my audio settings

This is one of the patches I have been working on, although it has no osc~ objects. Still, there is clipping that seems to be associated with the use of the line object.

Galarreta v10.pd

This is a patch I've been working on which produces all the issues I have mentioned.

BassCloud.pd

I hope there is a fix to this problem. I will appreciate any advice you can give.

Thank you again for reading

@sadielcuentas Yes, [line] can produce clicks as the grain (steps between changes) is not fine enough. [vline~] or [line~] is a better bet.
I also have the high pitch whine (about 4K) with an [osc~] at 0Hz, which I first noticed this year. An [osc~ 0.5] will pulse the whine. The strange (probably not?) thing is that I now have it in all versions of Pd including extended.
Also using windows (7) and no updates on my computer in the last 6 years.
My guess is that I had never produced a patch with an [osc~] sitting at 0Hz before.
Your audio settings should be just fine,
Gui updates...... dragging faders with the mouse etc. can produce clicks, but only in a very heavy patch.
I would guess that the whine is present in all operating systems....... testing.pd
Anyone?
David.

@whale-av I hear silence at zero and some slow glitches at 0.5 Hz, no whine. Pd 0.49.1, macOS 10.14.5

@sadielcuentas Ok thanks @weightless
The whine / whistle is re-sampling artefacts. With Pd set to 44100 they occur as the soundcard is set to 24-bit 48000 by default in windows. At 48000 set in Pd...... blissful silence.
Change it in Pd or change it in Windows.....
David.

@whale-av that just solved it, Great!

This was bugging me for months, thank you so much!