47
OB-6 Operation Manual
Portamento
Portamento
Portamento causes the pitch of a note to glide up or down from the pitch
of the previously played note. Portamento is turned on and off using
the
portamento
switch, but the
rate
must also be set. If the
portamento
button is on, but
rate
amount
is set to 0,
portamento
has no effect.
RATE
PORTAMENTO
The Portamento controls
There are four modes that determine how portamento behaves.
Fixed Rate (
FR
):
The time to transition between notes varies with the
interval between the notes; the greater the interval, the longer the transi-
tion time. The portamento rate is fixed. This is the default portamento
mode.
Fixed Rate A (
FRA
):
The same as Fixed Rate, but portamento is only
applied when playing legato. That is, portamento only occurs when a
note is held until the next note is played. This effectively allows porta-
mento to be turned on and off from the keyboard.
Fixed Time (
FT
):
Portamento is set to a fixed time, regardless of the
interval between notes.
Fixed Time A (
FTA
):
The same as Fixed Time, but portamento only
occurs when playing legato.
To select a portamento mode:
1. Press and hold the
portamento
switch. The numeric display shows the
currently selected
portamento
mode.
2. To select a different mode, continue to hold down the
portamento
switch then press the
bank
/
decrement
and
tens
/
increment
switches to
step through the other choices.
3. When finished, release the
portamento
switch.
Summary of Contents for ob-6
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Page 94: ...84 Appendix C MIDI Implementation Dave Smith Instruments...
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