I'm running Puredata version 0.40-2 on Xubuntu linux with an onboard laptop cheap soundcard (realtek Ac'97), puredata uses the default Oss driver.
Was trying some of the example patches to learn more about it, and noticed that the audio coming out is just "downsampled".
This really stands up when you run patches with just sine waveforms, because you can hear all the downsampling artifacts clearly.
Looked at the Oss driver settings... it is set to 44.100 Hz as samplerate (!) so this shouldn't happen.
When I change the samplerate to (at least) 96.000 Hz (which is a really high value!) the problem disappears.
Can you explain what's going on, since I have encountered this exact problem in other audio applications (e.g. Alsamodularsynth) and not in other ones (audacity sound editor for istance).
??

thank you!

So basically:

[==~] --> [expr~ $v1==$v2]
[||~] --> [expr~ $v1||$v2]
[&&~] --> [expr~ $v1&&$v2]
[<~] --> [expr~ $v1<$v2]
[>~] --> [expr~ $v1>$v2]

is this right?

same problem here (pd extended 0.40.3 - under winXP)
the above solution doesn't work.
I noticed that under \extra\zexy there aren't such objects, I only have found someone with the name in equivalent hex ascii code (example: there isn't something like ||~.dll or ||~.pd but there is 0x7c0x7c0x7e.dll and 0x7c0x7c0x7e.pd)

Note: if I try to create the object [0x7c0x7c0x7e] (instead of [||~] which doesn't load) it creates the object but I get this message:

load_object: Symbol "0x7c0x7c0x7e_setup" not found

yes, that's what I think.
BTW, if someone ever encountered this problem using ubuntu and pd, please let me know.