User Guide

22
MU10 Overview and Features
■ Maximum Polyphony
The MU10 can play a maximum of 32 notes
polyphony at once. (When the A/D INPUT 1 jack
or both the 1 and 2 jacks are connected, the A/D
INPUT function is turned on and the maximum
polyphony is reduced to 30.) However, the actual
number of notes that will play at any given time is
determined by the number of elements in use
across the 16 Parts.
For example, if you use only one-element Voices,
you can achieve the full 32 notes maximum
polyphony. If you use one or more two-element
Voices, however, maximum polyphony will be
reduced accordingly.
The MU10 is a last-note-priority tone generator,
which means that if it receives more than 32 notes
of MIDI Note data at any time, earlier (first) notes
will automatically cut off to accommodate the
most recent (last) incoming notes.
■ Part Priority
Each of the MU10’s 16 Parts corresponds to each
of the 16 MIDI channels (1 – 16). If incoming
Note data exceeds the maximum polyphony, the
MU10 will prioritize which Parts are played first,
in the following order, from higher priority to
lower:
• Channel 10 (Drum Part), 1, 2, 3, 4, 5, 6, 7, 8, 9, 11,
12, 13, 14,15, 16.
Therefore, if you are creating your own music data
using sequencer software, you should assign your
most important Parts (such as melody and bass) to
higher priority MIDI channels (i.e., lower MIDI
channel numbers) in order to preserve the integrity
of your composition. Note that with the GM
System Level 1, the Drum Part is always assigned
to MIDI channel 10.
■ Element Reserve
The MU10 has an Element Reserve feature that
lets you reserve a specified number of notes for
certain Parts, in order to keep notes from being
“stolen” from those Parts by other Parts if
incoming MIDI Note data exceeds maximum
available polyphony.
For example, if you specify an Element Reserve
value of “10” for Part 1, then Part 1 will always
keep 10 elements for itself. You can set Element
Reserve values with MIDI System Exclusive
messages (see XG Native Parameter Change on
page 30, and <Table 1 - 4> on page 35).
■ Selecting Voices
The MU10 not only contains the 128 basic GM
Voices and GM drum set, but many variation
Voices as well—to give you access to a total of
676 Normal Voices and 21 Drum Voices.
In XG mode, the basic 128 GM Voices can be
accessed by selecting Program numbers 1 – 128.
Other Voices can be accessed by selecting both
bank numbers and Program Change numbers. The
Voice bank can be selected via MIDI Control
Change Bank Select (MSB and LSB) messages. In
XG mode, the MSB value determines the Voice
type (Normal, Drum), while the LSB value actually
selects the bank (excluding the SFX bank).
When the MU10 is in TG300B mode, the Voice
banks can be selected with appropriate MSB
numbers, as LSB is fixed.
Lists of all available Voices along with bank and
program numbers are provided on pages 42 – 49.
Note that the 128 MIDI Program Change numbers
consist of 0 through 127, whereas the 128 MU10
program numbers consist of 1 through 128.
Depending on the sequencing hardware and
software you use, you may have to convert the
MU10 program numbers to the appropriate
Program Change numbers.
* For more information about Bank Select and
Program Change messages, see About MIDI,
page 24.