RME Audio Digiface AES, User Manual

Page: 79 / 104

User's Guide Digiface AES
© RME
79
27.7 Loopback Detection
The Mackie Control protocol requires feedback of the received commands, back to the hardware
controller. So usually TotalMix will be set up with both a MIDI input and MIDI output. Unfortunately
any small error in wiring and setup will cause a MIDI feedback loop here, which then completely
blocks the computer (the CPU).
To prevent the computer from freezing, TotalMix sends a special MIDI note every 0.5 seconds to
its MIDI output. As soon as it detects this special note at the input, the MIDI functionality is disa-
bled. After fixing the loopback, check
Enable MIDI Control under Options to reactivate the To-
talMix MIDI.
27.8 OSC (Open Sound Control)
Besides simple MIDI notes, the Mackie Protocol and Control Change commands, TotalMix FX
can also be controlled by the Open Sound Control, OSC. For details on setup and usage see
chapter 24.7.3.
An OSC implementation chart can be downloaded from the RME website:
http://www.rme-audio.de/downloads/osc_table_totalmix_new.zip
RME offers a free iPad template for the iOS app TouchOSC (by Hexler, available in the Apple
App-Store):
http://www.rme-audio.de/downloads/tosc_tm_ipad_template.zip
The RME forum hosts further information, more
templates (iPhone…) and lots of useful user feed-
back.
28. DAW Mode
Users that work exclusively with their DAW software,
and don’t want to use TotalMix FX for addi-
tional routing tasks,
need a way to be sure that TotalMix FX currently doesn’t change the DAW’s
routing. While Reset Mix can do so, those users would be better served with a very simple surface
that offers the interface’s hardware controls (gain, phantom control, instrument…), but guarantees
a straight 1:1 routing for all playback channels, and has no hardware monitoring of the input
channels (which is then done by the DAW software).
For such cases TotalMix FX includes an alternative operating mode. It can be booted into the so
called
DAW mode . This simplified interface is for anyone performing all monitoring and routing
within the DAW. The DAW mode restarts TM FX into a light version with just two rows, no playback
row, and no mixing faders in the input row. Routing is 1:1 only. Just the hardware controls (if
existing) and hardware output levels are available.
To change the current mode go to the menu, Options, and click on
Operational Mode . Choices
are Full Mode (default, mixer active, all routing options available), and Digital Audio Workstation
Mode (straight playback routing, no input mix).
Several useful, advanced features are still available in TotalMix FX in DAW mode:

Talkback, External Input

Phones definition and handling with Talkback

Speaker A / B

All FX (EQ, Dynamics, Echo, Reverb)

Mute and Solo

Cue / PFL