A&H GLD 112 - MIDI mute?

[Gareth Risdale]

Am trying to work out how to mute and unmute a channel via midi on an Allen & Heath GLD 112 desk. Horrible documentation is here: http://www.allen-heath.com/media/GLD-MIDI-and-TCPIP-Protocol-V1.4_2.pdf

There is a previous discussion about controlling channel levels via NPRN, but this seems to be a different thing... Can anyone help? I'm so tired.

Thank you!

Gareth

[Jonathan Pearce]

Can you make the mute and unmute a scene on the desk? It is then much easier to recall from qlab. We do this quite regularly at a venue we visit several times a year.

[Rich Walsh]

I think we’ve covered this if you look carefully at the archive, but mutes are controlled by sending Note On followed by a Note Off (why?!):

Mute on

NOTE ON with velocity > 40 followed by NOTE OFF 9N, CH, 7F, 9N, CH, 00

Mute off

NOTE ON with velocity < 40 followed by NOTE OFF 9N, CH, 3F, 9N, CH, 00

N is the MIDI channel, CH is the mixer channel. So two messages to mute: Note On @ 127, Note On @ 0. Unmute: Note On @ 63, Note On @ 0.

(They’re not real Note Offs if they’re 9N: they’re Note Ons @ 0. MIDI by muppets.)

Rich

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[Gareth Risdale]

Jonathan, good idea, but would be a lot of work as the existing programming uses mute on/off (with sensible Yamaha desks).

Rich, am sure the answer is right in front of me if I had the wit to comprehend it... I don't understand: If I create a Midi Voice Note On or Note Off cue I can input Channel / Note Number / Velocity. What do I need to enter into these three boxes?

Or is it a sysEx cue I need? 9N, CH, 7F, 9N, CH, 00 does not make sense to me...

G

[Rich Walsh]

It’s not SysEx. Two MIDI Cues to mute. One Note On on the correct MIDI channel with note number to match input channel from A&H table ($20 = 32 = Input 1; $4F = 79 = Input 48), velocity 127. Followed by one "Note Off" with everything the same except velocity 0.

To unmute, first message has velocity between 1 and 63.

I am sure I made a tool to make these…

Please invest 15 minutes understanding MIDI well enough to recognise the hex string for a Note On if you are going to use it!

Rich

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[Gareth Risdale]

There is no table with $20 = 32 = input 1 that I can see in that document, but yeah - that was the missing piece. 32 = 1. I was trying 20.

Interestingly, I don't need the second cue - just a note on with the correct velocity works fine.

I think it might take me more than 15 minutes, but yeah, I'll add that to the list!

Thank you!

Gareth

[Gordon P. Howell, Jr.]

That’s a fairly simple MIDI command that gets complex as you change the bus structure of the desk.  I’ve written up a procedure to be used with CH Sound’s Palladium program that might be helpful, will send it to you in a private email.

Geep

HH Audio