Mutes - SoundCraft MH2 User Manual

Mutes

The MH2 does not have built-in mute scene automation, but incorporates direct MIDI control of channel mutes using MIDI note
messages. This can be used with some types of external Show Control software to generate externally-stored mute scenes. When
mutes are manually pressed, note data is transmitted on MIDI channel 16, and this data can be recorded into the external PC
running Show Control software. The software can then recall scenes by transmitting all the stored mute data back to the console in
a compressed "packet" of MIDI note information.
It is possible to transmit and receive the note data in two different formats, depending on the requirements of the external software.
The two formats are essentially the inverse of one another. In "Sampler Mode" (the factory default), a Note On message is transmitted
when a mute is switched off (un-muted) and a Note Off message is transmitted when a mute is switched on (muted).
In "Sequencer Mode" the inverse is the case.
In both modes the note data is always transmitted and received on MIDI channel 16.
The mode can be changed by holding down the M2 Mute Group Master button during power up for 10 seconds. Repeating the
procedure toggles the mode again. Once set, the mode will be memorised on future power cycles, unless changed again.
The mute control messages cannot be transmitted or received if the console is part of a BSS Varicurve MIDI Loop: see the next
section.
MIDI Mute Tx
A MIDI mute On message will be transmitted on manually muting any channel. A MIDI Mute Off message will be transmitted on
manually unmuting a channel.
MIDI Mute Rx
A received MIDI mute On message will mute a channel IF the channel was previously unmuted AND the channel is not safed. A
received MIDI mute Off message will unmute a channel IF the channel was previously muted due to a MIDI mute only.
Sampler Mode
This is called sampler mode because the Note format allows Samplers to play samples triggered by the Mute going Off. These
events are NOT easily viewed recorded into a sequencer. The transmit & Receive message format is:
Pressing Mute switches transmit Note On (for Mute Off) or Note Off (for Mute On) messages, whose velocity determines the Mute
state.
The message format is:
<<Note On or Off>><<Console Channel>><<Velocity>>
where
<<Note On>>
<<Note Off>>
<<Console Channel>> = 00H-07H
<<Velocity>>
The velocity is ignored on Rx i.e. any velocity will trigger the mute.
56
= 9FH (i.e. Mute Off, MIDI Chan 16)
= 8FH (i.e. Mute On, MIDI Chan 16)
Mono Input 1 - 8
= 08H-0FH Mono Input 9 - 16
= 10H-17H Mono Input 17 - 24
= 18H-1FH Mono Input 25 - 32
= 20H-27H Mono Input 33 - 40
= 28H-2FH Mono Input 41 - 48
= 40H-43H Stereo Input 1-4
= 7F