Symetrix 601, Owner'S Manual

Page: 62 / 142

7-8
Rev 2.2, 10/31/94
7.4.6 MIDI Programming
The 601 is MIDI programmable. At one level, you can simply send MIDI program change
messages to load pre-stored programs (yours or the factory presets). At another level, you can
manipulate program parameters via MIDI, and at yet another level, you can modify program
parameters in realtime, during operation.
The 601 responds to the following MIDI messages:
1. Program Change
2. Control Change
3. Sysex
4. Pitch
Bend
5. Aftertouch
You can theoretically operate up to 127 601s on a single MIDI bus. Depending upon how they
are programmed, you can access them individually, or as a group.
7.4.7 Accessing Parameters via MIDI
All front-panel parameters may be accessed via MIDI. In addition, all secondary (hidden)
parameters may be accessed via MIDI. A list of all accessible parameters may be found in
Appendix A. These parameters may be altered via a MIDI sysex message or by using the
procedure found in Section 7.4.10.
7.4.8 Realtime MIDI
Many of the 601's MIDI controllable parameters lend themselves to realtime control using a
MIDI continuous controller. Some of these parameters are:
1. Output level and pan
2. Filter frequency and level
3. Delay mix.
An example of Realtime MIDI may be found in Appendix B.
7.4.9 Program Storage
The 601 provides non-volatile storage for 128 user programs (Program numbers 1 through
128). Program numbers greater than 128 are factory presets and are always protected. You can
edit any of the factory presets and store it in one of the user program numbers. You can dump
the contents of the 601's program memory to the
M
IDI
O
UT
connector on the rear panel.
Conversely, you can also load the 601's program memory via MIDI.