Alyseum MS-812 - Manual (Page 12)

MS-812 – User’s manual © - Revision 1.9
Page 12
5.3.2 The Main (root) device
This device presents three entry points:
1. Preset management related messages (select, load, save, rename, …)
2. CV out jack role assignment messages – defining which data among those available will be
issued by each CV jack as an electric signal
3. Digital out jack role assignment messages – defining which data among those available will
be issued by each Digi jack as an electric signal
5.3.3 The Performance sub-device
This sub-device presents 10 inputs:
● Seven identical monophonic sections
● One polyphonic section that can be adjusted to handle from one to eight voices. When set to
one voice, it behaves the same as the other inputs, and thus becomes the eighth
monophonic input.
● One drum input to trigger independent sounds relating to notes.
● One direct jack control section to be mainly used with computer applications
Poly and Mono sections
Performance messages can be sent separately to any of these 8 inputs.
The Performance messages recognized are:
● Event (notes) - with high-res free pitch and dissociated gating and impulse (when sent from
CopperLan sources)
When the source is MIDI, the messages are Note on/off, the pitch obeys to semitones
as defined by the note number, the gating is associated to the note-on/off status, and
the impulse (relating to the velocity) is provided jointly within note on/off messages.
● Modifiers – Any of the 65K+ Modifiers can be handled in full 16-bit resolution (65536 values).
Modifiers can be used as setting control (e.g. tune), performance data (e.g. pitch-bend), or
both (e.g. portamento time).
When the source is MIDI, the messages enter the CopperLan network as MIDI
controllers, and the resolution is usually 7-bit (128 values).
● Selectors – Any of the 65K+ Selectors can be handled – When the source is MIDI, any of the
usual 120 Controller messages can be used.
Selectors can be used as setting control (e.g. gating mode), performance data (e.g. sustain
pedal), or both (e.g. portamento switch)
Being a subset of CopperLan, MIDI messages can act in real time on the voltages generated by
the interface (e.g. pitch-bend, portamento time, etc).
A learn function eases the control from any MIDI or CopperLan source without the need to know
the actual message identity.
Drum section
This section receives up to 12 notes that can be mapped anywhere over an 8 octave range. In
each octave, the first pair of jacks (CV1 and Dig1) will relates to the note C, the second pair to C#,
and so on.
The Dig jacks are issuing gate signals in relation to the note on/off status, the CV jacks provide a
voltage relating to the attack velocity. The release velocity is deliberately ignored; the attack
relating voltage is maintained up to the next attack event.
Since there are only 8 CV out jacks, the last notes in each octave cannot issue the velocity signal.