CHAPTER 13. ROUTING AND I/O
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2. Insert an External Instrument device on another MIDI track.
3. Select the track that contains the instrument in the rst MIDI To chooser on the
External Instrument device.
4. Select the MIDI channel to route to in the second chooser on the External
Instrument device.
5. From the External Instrument's Audio From chooser, select a secondary output
on the instrument to which you are sending MIDI.
Repeat steps 2-5 to feed and tap additional components of your multi-timbral instrument.
You could also put the entire system of External Instrument devices into a single track, by
placing each one in a Rack's device chain.
Note that the main outputs of the multi-timbral instrument will still output to the track that
contains the instrument - only auxiliary outputs are available to the External Instrument
device.
Feeding Sidechain Inputs
Some effects have so-called sidechain inputs. A vocoder, for instance, imposes spectral
characteristics taken from one signal (say, spoken word) onto another signal, for instance a
string pad. The vocoder is inserted as an audio effect into the string track. It has a sidechain
input for the speech signal, which has to be delivered from another track. So, we create an
additional audio track named Speech and set its Output Type chooser to the Strings
track. From the Output Channel chooser, we select the vocoder's sidechain input.
