Manual

4
Using multiple outputs in Logic Audio
When using Logic, the multiple outputs from BFD, like any other AudioUnit plugin with
more than 2 outputs, become available to special audio objects called Aux channels.
The primary stereo output 1-2 of each plugin (the Direct bus in BFD Groups and the
Overhead bus on BFD All) appear at the original Audio Instrument channel used for BFD.
Additional outputs from 3 onwards are available to use as inputs to Aux channels. If any
of BFD’s outputs have not been routed to an Aux channel, then they will be mixed into the
original BFD Audio Instrument channel.
1. Create a new audio object in the Audio Environment and change the Cha parameter
(you’ll find it in the audio object parameters on the left of the environment window)
for the object to Aux 1. Repeat this procedure for the number of channels you’ll need
for BFD (and perhaps more for other instruments if you require it).
• BFD (Group Outputs) needs 3 stereo Aux channels (the first output is played
through the original Audio Instrument channel used for BFD)
• BFD (All Outputs) requires 2 stereo and 10 mono.
• If you use BFD in multichannel mode a lot, it’s a good idea to create these Aux
channels in your Autoload.LSO so they’re already available when you start a new
project.
2. To direct one of BFD’s multiple output channels to an Aux channel, click-hold on
the input selector on the Aux channel (the 2nd selector above the fader) and select
Instrument N (where N is the Audio Instrument channel containing BFD) Outputs
3-4, 5-6 etc. You will, of course, need to assign the Aux channel output to one of the
Master channels, or to a Bus with an output to a Master channel, in order to hear
these outputs.
Please note that versions of Logic prior to 7.1 do not have automatic plugin delay
compensation for Aux channels, so using any plugins which introduce a delay into the
signal path will lead to that channel’s output being delayed.
Using BFD in Digidesign Pro Tools
• Mbox owners may have more trouble getting low latencies and consistant performance.
We’ve experienced trouble with BFD and the Mbox on a 1.5 GHz powerbook whereas
using a Digi002 there were no problems at all. The limitations of USB, unfortunately,
cause the problems.
• TDM and HD system owners: please realise that although you may have a big MIX farm
or HD rig this does not necessarily mean you will achieve amazing performance for
plugins like BFD, which run entirely on your host machine’s CPU.
• How you use BFD in Pro Tools depends on which Pro Tools version you’re using. Firstly,
you must have at least v6.2. Versions up to 6.4 do not support multiple outputs from
RTAS plugins. Therefore, if you want multiple output functionality, you must either use
ReWire, or update to v6.7 or later.
Chapter 2: Using BFD in your host BFD supplemental manual