Hey dude,
I got the libPd problem fixed. non-audio events need to be aligned with block boundaries in the DSP chain. Otherwise you get single block loops in the audio output (buzzing) that you have no control over. Of course this happened with my custom clock generated from a phasor, (16ths, 24th notes etc) and I wrote the external to counteract clicks in the audio generated by the delay between an audio event and it's Pd clock time (catch 22, but I bypassed it eventually).
Still making it work on an iphone 4. Genius programming by me ;)
Ed
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