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Viewing topic "MIDI faders controlling EL and Voice levels?"

     
Posted on: November 30, 2011 @ 09:15 AM
Maine
Total Posts:  12
Joined  07-21-2008
status: Regular

Hi all,

Is it possible to use 8 faders on a MIDI fader controller to control:

1) The volume of each individual Element, e.g. to create an 8 drawbar organ controlled by the faders?

2) Similarly, using 4 faders to control the levels of the 4 parts in a Performance?

For research, I hooked up the MOX to MIDIOX and turned the Volume knob to adjust EL volume levels, but the MIDI data appeared to be the same no matter which EL was selected. I’m no MIDI expert, so I could have been doing something wrong.

Anyway, any help will be gratefully received!

  [ Ignore ]  

Posted on: November 30, 2011 @ 10:02 AM
Bad_Mister
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Total Posts:  36620
Joined  07-30-2002
status: Moderator

Is it possible to use 8 faders on a MIDI fader controller to control:

1) The volume of each individual Element, e.g. to create an 8 drawbar organ controlled by the faders?

2) Similarly, using 4 faders to control the levels of the 4 parts in a Performance?

Yes, it is. If your MIDI fader controller can be programmed to do System Exclusive messages.

Here’s what is going on:
MIDI provides for universal volume messages such as the Control Change message 007 Main Channel Volume. That controls the volume of every device on the MIDI channel on which this message is sent.

You could use this to control the entire (total) Volume of a MOX Voice. What you need to know is it is a unique (exclusive) parameter of the MO-X when you attempt to change individual ELEMENT LEVEL or even individual PART VOLUME in a VOICE or a PERFORMANCE respectively. VOICE and PERFORMANCE are modes on which the MO-X tone engine is addressed on a single MIDI channel. So cc007 would change the VOLUME of all Elements in a VOICE and would change the VOLUME of all PARTS in a PERFORMANCE together.

The MO-X uses System Exclusive messages for ELEMENT LEVEL and PART VOLME… this way it can address individual output level within its own structure.

Therefore if your device is able to be programmed to send System Exclusive messages, then it will be able to change the Elements of a VOICE and/or the PARTS of a PERFORMANCE.

  [ Ignore ]  

Posted on: December 05, 2011 @ 03:52 PM
Maine
Total Posts:  12
Joined  07-21-2008
status: Regular

OK, I’ve tried to find out without asking… :-)

But I can’t find what to send. What string would I need to send to control part level 1-4 in a performance?

  [ Ignore ]  

Posted on: December 05, 2011 @ 06:42 PM
Bad_Mister
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Total Posts:  36620
Joined  07-30-2002
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Message is: F0 43 10 7F 14 31 pp 0E dd F7 (Page 112 of the Data List booklet)

Where “pp” = the PART 1-4 in hex (00-0F)
and “dd” = the Volume 0-127 in hex (00-7F)

F0 = Start of Exclusive
43 = Yamaha ID
10 = Parameter Change/Device first
7F 14 = MO-X Product ID
31 pp 0E = High/Mid/Low Address for PART Volume
dd = Data Byte
F7 = End of Exclusive

VOLUME PART 1: F0 43 10 7F 14 31 00 0E dd F7

VOLUME PART 2: F0 43 10 7F 14 31 01 0E dd F7

VOLUME PART 3: F0 43 10 7F 14 31 02 0E dd F7

VOLUME PART 4: F0 43 10 7F 14 31 03 0E dd F7

  [ Ignore ]