Yamaha SY77 Operating Manual page 91

Alternate On/Off
Other wave data settings
Name and store your new
drum voice
Next select note C#1 and specify preset wave number 97 SD 1 (snare drum).
In this way, make the following settings for notes C1-F# to create the simple
seven-instrument drum set shown in the table below. For notes F and F# set
Alternate to "on".
Note
C1
C#1
D1
D#1
E1
F1
F#1
Play notes C1-F#1 to play your new drum set. Notice that when you play F#1
(hi-hat open) and then quickly play F1 (hi-hat closed), the open hi-hat will stop
sounding when the closed high sound begins. It is impossible for a real hi-hat to
produce closed and open sounds at the same time, and this is the reason that we
set these two waves to Alternate On. When two or more waves are set to
alternate On, the last-played wave will take priority and the previously played
wave will be turned off.
The volume of each note is adjusted by Level. The tuning of each note is
adjusted in half steps by Note Shift and finely by Fine Tune. The stereo position
of each note is determined by Static Pan.
The Voice edit mode, Drum set data section explains the details of these
and other parameters.
As explained in the previous section, give your newly created drum voice a name
and store it into memory. The previous section of this manual How to use the
sequencer has shown how to use the sequencer to play a drum voice along with
other parts in a song.
Wave no. Wave name
93 BD 1
SD 1
97
102 Tom 1
103 Tom 2
107 Ride
104 HH closed
105 HH open
Alternate
off
off
off
off
off
on
on
79