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20
@ Control Change Message
This transmits data about vibrato, hold, volume, pan, and other features that allow more
expressiveness to be added to performances.
Each kind of expression is measured
in
terms
of a control
number
between 0/00H
and 127/7FH.
However,
not
all MIDI
devices are capable of vibrato, or panning, etc.; so it depends on the device whether or
not it can respond to these control numbers
(and performance expressions).
© Bank Select (Control Numbers
О/ООН and 32/20H)
Bank
Select and Program Change numbers have been combined
to give you a wider
range of Tones from which to choose.
The Bank Select number lets you switch between
various banks of Tones, and the Program Change number selects the Tone itself.
1f you
send Bank Select message and don't follow up with a Program Change number, nothing
will happen.
'This is a problem
for some
MIDI sequencers that send identical-step (timing) Control
Change message.
Message
is sent from smallest
to largest Control
numbers,
so that
Program Change is sent before Bank Select.
If you have this kind of sequencer, find out
how to advance Bank Select so that it is sent before the Program Change number.
© Modulation (Contro! Number 1/01H)
This adjusts vibrato depth.
The effect this will have in terms of actual pitch variation
will vary, depending on the Tone selected.
© Portamento Time (Control Number
5/05H)
This adjusts the speed of the Portamento effect.
©) Data Entry (Control Number
6/06H and 38/26H)
Use this to set parameter values selected by RPN or NRPN.
' Volume
(Control Number
7/07H)
This adjusts the mix volume for each part.
'The actual volume level output to your audio device is determined by a combination of
the Volume
(Control Change 7/07H), Expression (Control Change
11/0BH) and Master
Volume
(Exclusive Message) settings, plus the setting of the VOLUME
knob.
© Pan (Control Number 10/0AH)
This adjusts the stereo position of the output (the apparent location of the sound between
the left and right speakers).
Pan is continuously variable.
Position
Left
I——
Pan
0
Value
00H
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