hello martin peach
i tested your external a bit more deep on the 'good' soundcard, where i can exclude aliasing introduced by the soundcard. it turned out, that a bit of aliasing is audible in the range above 5000Hz. i think this is not tooo bad, maybe for 'pure'ists. but i had serious troubles, when loading some patches, that contain [sqosc~]. it can happen, that after loading the patch, pd is sending constantly a dc to my soundcard. even when i close pd, the dc stays on these channels, where pd was connected before over jack. to get rid of the dc, i must restart jackd again. because of that, i assume it is related to jackd (is it possible to crash jackd from pd?). i attached a test-patch. when loading that patch, jackd (and pd) get unusable for sure.
my system: ubuntu dapper i386 pd-0.40.2 jackd 0.100.0
when i create a patch from scratch with [sqosc~], i have no troubles. i get the dc also, when i open the help-patch of [sqosc~].
roman
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