Pianogineer -- I'm excited to hear about your app and I'd be happy to be a beta tester.
I am so grateful to Matthias and the whole team at RME for building such amazing hardware and software, and I yearn to push the limits and see how we can refine these tools to help us in new ways.
I have mixed using iPad/OSC/TotalMix/UFX for a few concerts and found that it is rock solid, but not quite intended as a live mixing solution. I have a few feature suggestions, which I'll get to in a moment. This summer I took my equipment on tour with an established US band and recorded a live album for them while mixing FOH and monitors for audiences as large as 5000 people, all through the UFX. My setup included:
--30 inputs (using an additional rack of outboard tube and solid state preamps from my studio, plus two RME ADI 8-DS)
--5 monitor mixes, plus main mix, plus stereo headphone mix for myself (9 outputs)
--wireless in-ear monitor transmitter to my beltpack and headphones, so I can solo channels anywhere in the room while mixing
--iPad 3 running TouchOSC (and also iPhone at times)
--AirPort Express base station as my primary access point -- MacBook Pro, iPad and iPhone all connect through that (I found this more reliable than establishing an "ad hoc network" based on the MacBook's wifi. The ad hoc network would shut down if I didn't use my iPad constantly to keep it connected.)
--On the MacBook I ran ProTools 10 as my primary recording. I also used ProTools for effects processing (running Aux inputs with RTAS plugins) which I could add to my live mix using the Software Playback returns in TotalMix.
--I of course ran DuRec the entire time as a redundant backup recording, and that saved me on one occasion when ProTools hiccoughed and recording had to be re-started in the middle of a song.
--The finished album is here, and I'm very happy with the results. I can't imagine doing this job without the UFX, and the band is looking forward to producing another live album this way very soon: https://itunes.apple.com/us/album/live- … d573782164
The features that I really missed when mixing live:
--The ability to view and adjust all of the outputs of a single input, from one screen. When running sound check, I've got five guys on the stage, each with his own monitor mix. We go around the stage real quickly and check each instrument, and each guy raises his hand if he needs more of that instrument in his monitor wedge. So when I'm looking at the input channel for the lead guitar, I want to see all of the monitor sends for that channel, and be able to see and adjust the levels of everywhere that microphone input is going out. It was embarrassingly slow to do this with TouchOSC. Even with TotalMix, I have to click on each output fader in order to set each input's send to it (or use the matrix view, which is a strange way to mix). Perhaps we could come up with some iPad-based matrix view, via OSC. Or just a page of output knobs/faders for each input would be ideal.
--(Perhaps this one is a question for Matthias) Is it possible for multiple OSC clients to connect to TotalMix someday? I attempted to control it simultaneously with my iPhone and iPad, and while I could have some commands from each working, it appears that it's just designed for 1:1 connection at this point. It would be wonderful if each band member could control their monitor mix with their iPhone or iPad. Every musician has an iPhone in this country, and every musician wants more control over their stage monitors. I would want to see some sort of restricted interface mode, so that the musician on stage doesn't accidentally affect the main mix or other settings.
--The EQ interaction that you demonstrate in your video is excellent! This is high on my wish list of features. In addition to being able to grab the EQ points directly and move them around, I would suggest using a pinch for adjusting Q.
--I see space for a graphical dynamics interface, and that would be very helpful. Especially if we are able to see the peak/RMS level and the compressor's interaction with that audio (just like in TotalMix, where the white point moves along the knee line of the gate and compressor) It would be great to see gain-reduction meters alongside the main audio meters for each channel as well.
--Here's a tricky one: I learned that if I wanted the ability to solo various inputs, I needed to make the "Main" output be my personal "control room" mix, and actually assign a different pair of outputs to the main front-of-house mix. The control room functionality of total mix is quite robust, but it doesn't include this simple feature that live consoles have. Perhaps in the interface design of your app, you can account for this, and label things appropriately so that what TotalMix calls "Main" is actually our cue mix which receives the output of whatever is soloed.
Cheers, and thanks for your work!
Charlie Wilson
http://soniczenrecords.com
PS
A great example of iOS live mixing control is the Presonus app for iPad and iPhone. Have you checked that out? You can demo the app for free, even if you don't own one of their StudioLive consoles.