Using the Eventide DSP4000 from Pro Tools via the O2R
Sometimes it may be useful to take one or
more existing audio tracks in a Pro Tools session and send them out to a
processor, such as the Eventide DSP4000, while simultaneously recording the
output of that processor to some adjacent tracks in Pro Tools. This can be done
entirely digitally through the Yamaha O2R, using any available digital input
and output channels in Pro Tools. To make this example clearer, however, we will
choose channels 1&2 of Pro Tools to send signals out to the O2R that we
wish to pass on to the Eventide, output channels 1&2 of the O2R to send
signals to the Eventide, channels 3&4 of the O2R (and Pro Tools) for
recording the signals returning from the Eventide, and channels 5&6 of Pro
Tools for playback (monitoring on the O2R what we are recording in PT).
First,
set up the O2R according to the document Using Pro Tools with the O2R.
Make
sure MIC 9-16 is set to CARD SLOT 4 in the Digital I/O page.
On
the Routing page, take the channels to be sent out to the Eventide off the
stereo bus (unhighlight the "S" at the bottom of the screen) and
route them to the desired channels on the output bus. (For example - PT outputs
1&2, which are available as O2R input channels 1&2, will be taken off
the stereo bus and routed to outputs1&2.)
Be sure you are looking at the Routing page for the Mic inputs, not the
tape inputs.
On
the digital patchbay, patch O2R OUT 1&2 to the Eventide Harmonizer INPUT.
Patch
from the Eventide Harmonizer OUT to IN 3/4 on the O2R. (Note that O2R INs 1-8
on the digital patchbay are connected to Card Slot 4, and therefore correspond
to the O2R's input channels 9-16. Hence, INs 3/4 on the patchbay will be
available on the O2R as input channels 11/12.)
Make
sure the Harmonizer is set for digital input (SETUP button, audio soft button,
input=AES/EBU, output=AES/EBU)
On
the O2R, turn channels 11 and 12 on and bring up their faders. On the
routing page, take these channels off the stereo bus and route them to
output bus channels 3&4, which will be used for recording to Pro Tools.
In
Pro Tools, record enable the tracks you plan to use for the "effect
return" and make sure that their input channels are set to 3&4 (the
ones you selected for output on the O2R). Set the output (playback) channels on
these tracks to 5&6. Important: be very careful never to send
the output of the channels you are using for recording what is coming from
the Eventide to the same channels which are being used to send signals to the
Eventide, or feedback will result.
On
the O2R, enable input channels 5&6 (the Pro Tools channels we are using to
monitor what we are recording) and bring up their faders. Only these last
channels should be sent to the stereo bus, and they should not be routed
anywhere else. This will allow you to hear only what is actually being recorded
on the Pro Tools tracks - i.e., the effect return from the Eventide. (Note: if
you also want to hear the original ("dry") tracks in this example,
route O2R input channels 1&2 to the stereo output bus, as well.)
Check
levels everywhere (O2R, Eventide, Pro Tools) to maximize signal-to-noise and
make sure nothing is clipping.
O2R Overview | Digital Input from DAT to O2R | Using Protools with the O2R | Documentation Index
Revised 8/31/2005 by RP