Hello,
I intended to :
- use an iPhone 3GS as a second synth,
- connect it to the NS2,
- use the external section,
- mix and play both sounds (NS2 & iPhone) layered.
This setup works, the latency is acceptable, but the iPhone 3GS seems too weak in some cases :
1. With "IK Multimedia iRIG MIDI" and "SampleTank". The iPhone 3GS is opimized to have as much memory and CPU available as possible (I used a few apps to ensure that I have ~no background process, 154 Mb free, and switched to aiplane mode), SampleTank is also setup so consume as less CPU as possible. Effects are disabled too. It's still no not possible to play the "gentle piano" sound, just chain 3 triads and it begins de clip / clic / pop. The latency was ok.
2. With "Garage Band", there is no cliping, but not enough polyphony for "normal" playing. I have to count the number of voices, but I could not play "Just The Two Of Us (Bill Withers)" without sustain normally.
The latency was more hearable.
3. I tried Camel Audio's synth and it works fine.
Latency can't be ignored. I layered 3 sounds to play "Toto - Africa" with "Marimba+Flute+Bell" solo.
The need for a short attack and a tightly synchronized triggering of the 3 sounds makes latency hearable.
If I had a more powerfull iOS devices, I'd like to try few other apps like :
Synth / Sound module : iMS20, Sunrizer, Animoog, NLogPro
DAW : NanoStudio, FLStudioMobile
...
