Currently Being ModeratedApr 21, 2013 4:10 PM (in response to Cobalt19)
Is the filter-resonance sweep manual?
It could be (probably is) something not related to frequency at all..
What model Moog?
Currently Being ModeratedApr 22, 2013 7:27 AM (in response to Pancenter)
Hi. Yes a manual filter sweep.
No issues when monitoring the Moog (Voyager) filter sweep over headphones (not through Fireface and Logic).
I have other analogue synthesisers (Korg MS20, Doepfer modular) as well as plenty of software instruments and I have never encountered this problem before, from memory.
I am not convinced its a musical instrument problem (even though I have little evidence other than the above info currently) - is it even possible that an audio interface could fail to cope with such frequencies? It's as if Logic processing is somehow overloaded.
I seem to remember the issue occurs even when Logic is not actually recording but the audio track used for the Moog is armed and ready and only playing (i.e. to give me midi-CV click track via Kenton interface).
Currently Being ModeratedApr 22, 2013 8:40 AM (in response to Cobalt19)
My contention is the Manual Filter Sweep is sending out some kind of MIDI DATA (depending on how it's mapped) and this is in fact what's crashing Logic...
It may not even be MIDI data, just something in manual sweep.
Could be wrong but I would start there.
Currently Being ModeratedApr 22, 2013 8:56 AM (in response to Pancenter)
The voyager has a Kenton retro-fit kit installed?
Currently Being ModeratedApr 22, 2013 10:30 AM (in response to Pancenter)
The Voyager is a modern instrument (2002-present) with in-built midi BUT I have never connected midi and this issue I have described is arising through the audio path (via L & R audio outs from Moog to audio in's on Fireface) -then to the stereo enabled Logic Pro audio track.
Currently Being ModeratedApr 22, 2013 1:37 PM (in response to Cobalt19)
Sorry, you've never connected MIDI.. yikes.
So ONLY the audio outputs are connected?
Trying to grasp as I've never heard of a problem remotely close to this.
Currently Being ModeratedApr 23, 2013 3:15 AM (in response to Pancenter)
Hi - I know, "no midi" may sound mad but its not that I avoid midi as I do have Logic Instruments playing and the Kenton whacking out an appropriate Gate to drive the external hardware analogue sequencer. I will test the midi out on the Moog shortly.
As to my 'problem' - yes I wish I knew what it was. I suspect the Fireface interface the more I think about it, but I dont know what it could be as it has not been overdriven nor abused in any way at all.If anything its been underused.My Korg MS20 make ssome very intresting 'noises' at high frequency and I don't recall Logic going into a nose dive then. Plain wierd.