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MIDI Implementation
3
❍ Portamento Control (Controller Number 84)
Status 2nd byte 3rd byte
BnH 54H kkH
n = MIDI channel number: 0H-FH (ch.1-ch.16)
kk = source note number: 00H-7FH (0-127)
* A Note-on received immediately after a Portamento Control message will change
continuously in pitch, starting from the pitch of the Source Note Number.
* If a voice is already sounding for a note number identical to the Source Note
Number, this voice will continue sounding (i.e., legato) and will, when the next
Note-on is received, smoothly change to the pitch of that Note-on.
* The rate of the pitch change caused by Portamento Control is determined by the
Portamento Time value.
Example 1.
On MIDI Description Result
90 3C 40 Note on C4 C4 on
B0 54 3C Portamento no change (C4 voice still sounding)
Control from C4
90 40 40 Note on E4 glide from C4 to E4
80 3C 40 Note o C4 no change
80 40 40 Note o E4 E4 o
Example 2.
On MIDI Description Result
B0 54 3C Portamento no change
Control from C4
90 40 40 Note on E4 E4 is played with glide from C4 to E4
80 40 40 Note o E4 E4 o
❍ E ect 1 (Reverb Send Level) (Controller Number 91)
Status 2nd bytes 3rd byte
BnH 5BH vvH
n = MIDI channel number: 0H-FH (ch.1-ch.16)
vv = Control value : 00H-7FH (0-127), Initial Value = 28H (40)
* This message adjusts the Reverb Send Level of each Part.
❍ E ect 3 (Chorus Send Level) (Controller Number 93)
Status 2nd byte 3rd byte
BnH 5DH vvH
n = MIDI channel number: 0H-FH (ch.1-ch.16)
vv = Control value: 00H-7FH (0-127), Initial Value = 00H (0)
* This message adjusts the Chorus Send Level of each Part.
❍ NRPN MSB/LSB (Controller Number 98, 99)
Status 2nd byte 3rd byte
BnH 63H mmH
BnH 62H llH
n = MIDI channel number: 0H-FH (ch.1-ch.16)
mm = upper byte (MSB) of the parameter number speci ed by NRPN
ll = lower byte (LSB) of the parameter number speci ed by NRPN
* Rx. NRPN is set to OFF by power-on reset or by receiving “GM1 System On” or “GM2
System On,” and NRPN message will be ignored. NRPN message will be received
when Rx. NRPN = ON, or by receiving “GS RESET.”
* The value set by NRPN will not be reset even if Program Change or Reset All
Controllers is received.
**NRPN**
The NRPN (Non Registered Parameter Number) message allows an extended range of
control changes to be used.
To use these messages, you must rst use NRPN MSB and NRPN LSB messages
to specify the parameter to be controlled, and then use Data Entry messages to
specify the value of the speci ed parameter. Once an NRPN parameter has been
speci ed, all Data Entry messages received on that channel will modify the value
of that parameter. To prevent accidents, it is recommended that you set RPN Null
(RPN Number = 7FH/7FH) when you have nished setting the value of the desired
parameter. Refer to Section 4. Supplementary material “Examples of actual MIDI
messages” <Example 4>. On the GS devices, Data entry LSB (llH) of NRPN (contrpller
number 38) is ignored, so it is no problem to send Data entry MSB (mmH) only
without Data entry LSB (controller number 6).
On this instrument, NRPN can be used to modify the following parameters.
NRPN Data entry
MSB LSB MSB Description
01H 08H mmH Vibrato Rate (relative change)
mm: 0EH-40H-72H (-50 - 0 - +50)
01H 09H mmH Vibrato Depth (relative change)
mm: 0EH-40H-72H (-50 - 0 - +50)
01H 0AH mmH Vibrato Delay (relative change)
mm: 0EH-40H-72H (-50 - 0 - +50)
01H 20H mmH TVF Cuto Frequency (relative change)
mm: 0EH-40H-72H (-50 - 0 - +50)
01H 21H mmH TVF Resonance (relative change)
mm: 0EH-40H-72H (-50 - 0 - +50)
01H 63H mmH TVF & TVA Envelope Attack Time
(relative change)
mm: 0EH-40H-72H (-50 - 0 - +50)
01H 64H mmH TVF & TVA Envelope Decay Time
(relative change)
mm: 0EH-40H-72H (-50 - 0 - +50)
01H 66H mmH TVF & TVA Envelope Release Time
(relative change)
mm: 0EH-40H-72H (-50 - 0 - +50)
* Parameters marked “relative change” will change relatively to the preset value(40H).
Even among di erent GS devices, “relative change” parameters may sometimes
di er in the way the sound changes or in the range of change.
* Parameters marked “absolute change” will be set to the absolute value of the
parameter, regardless of the preset value.
* Data entry LSB (llH) is ignored.