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Using the Cancun SysEx messages: --------------------------------
Effect parameters such as Reverb, Chorus, EQ and Spacializer can be controlled by sending SysEx messages (System Exclusive Messages) to the Cancun board. This is done via MIDI Orchestrator Plus' SysEx window. A number of SysEx files have been provided as examples. You can load these as are, or modify them to create custom versions. More details on editing these SysEx files are provided below.
Although working with SysEx messages is somewhat of an advanced MIDI technique, you should not be afraid to experiment. You can't hurt the board or change any settings permanently. All settings are restored when you reboot the system.
To send a SysEx message using MIDI Orchestrator:
1. Select the SysEx window from the Window | New menu. 2. Click the load button and select one of the provided SysEx files. 3. Select the MIDI port for the Cancun. (the sound cards' MIDI Header port) 4. Press Send
More on working with SysEx Messages:
The SysEx files provided are pseudo-messages. That is, they contain embedded MIDI control messages. These are designed to work with Digital Orchestrator. If your sequencer does not allow values greater than 7FH (127 decimal) in a SysEx string, you'll have to use the NRPN controls to change the EQ.
Each SysEx message begins with an F0 and ends with F7. In between are the numbers that correspond to MIDI controllers. All values are in hex.
f0 b0 63 37 b0 62 00 b0 06 60 f7
The above example is the sysex message to set the low band eq level to +6 dB.
Here is a breakdown of each number:
f0 - beginning of message b0 - code for MIDI controller 63 - NRPN MSB 37 - value of MSB (in this case, special NRPN controls) b0 - code for MIDI controller 62 - NRPN LSB 00 - value of LSB (specifies low band eq) b0 - code for MIDI controller 06 - data control 60 - value (0-7FH, -12dB - +12dB) NOTE: a setting of +12dB may result in audible distortion, set the NRPN for the Master Volume to a lower level to compensate. f7 - end of message
From this, you can see that it is relatively easy to take the NRPN values from the table in the Cancun MIDI Specification and construct your own SYSEX messages. Note that each MIDI controller starts with b0.
For example, look up the value for Master Volume in the Special MIDI Controls. You'll see that it is NRPN 3707 with a value range from 0 to 7FH. Let's make the SYSEX message:
Remember, start each message with f0 and end it with f7
f0 - start b0 - code for MIDI controller 63 - this signifies the NRPN MSB value is next 37 - the first two numbers from the 4 we got from the table b0 - next MIDI controller 62 - this signifies the NRPN LSB value is next 07 - the last two numbers of the 4 we got from the table b0 - next MIDI controller 06 - data, this signifies the next value is our volume xx - any number from 00 (no sound) to 7f (full volume), 4d is good for EQ gains of +12dB. f7 - don't forget to end the message with this
That's all there is to it. You can string together multiple controllers, like EQ frequencies and levels in one SYSEX message. This has been done in eq_dflt.syx To see the values in any file, just load them into Orchestrator's SYSEX window.
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NOTES: This info is offered on an AS IS basis. Improper use of SysEx commands may result in a synth being reset or patches deleted! Please contact the manufacturer of the device in question to obtain the proper SysEx messages. We cannot assume any responsibility for lost data.
SySex data implementation is not supported by our support staff. The USB and the Standard 15 pin Joystick MIDI Cable - as well as our Software programs - are capable of delivering SySex Data or any MIDI information, however, when it comes to importing or exporting SySex, things get easily complicated as they there are too many parame