Roland SPD-20 Owner's Manual page 62

Note Number (NOTE #)
Set this parameter to the sound (note) of the MIDI sound module you want to play from that pad
(0–127/oFF).
fig.69
Correspondence between Note Numbers and Note Names
Note Name:
Note Number:
When setting the same Note Numbers to a number of pads within the same Patch, the same Note
MEMO
Numbers and Note Messages are transmitted from each pad. However, when identical Note Numbers
and Note Messages are received, only the tone set to the highest priority pad (p. 67) is expressed.
When making settings such as these, the indicator flashes more quickly, informing you that there are
non-effective settings.
fig.70
About Note Numbers for HI-Hats Controlled with Pedals
Normally one Instrument will be assigned one Note Number. However, a hi-hat sound (H01–H17)
controlled by a hi-hat control pedal will automatically be given three note numbers; the displayed
Note Number and the two note numbers immediately below it. Only the highest Note Number
will be displayed.
For example, suppose that H01 has Note Number 46 assigned to it. With the pedal depressed, if
you strike the pad to which H01 is assigned, Note Number 42 will be sent. If you strike the pad
without depressing the pedal, Note Number 46 will be sent. If you depress the pedal without
striking the pad, Note Number 44 will be sent.
62
C-1 A0
0 21
Sound of an Instrument
Pad
Note # 38
C4
60
Hi-Hat sound controlled
by a Pedal
Pad
Note # 46
44
42
C8 G9
108 127
Only the highest
note number will
be shown