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4 5 - 4 8
PF4 - PF7
Out
PF4, PF6, PF7 - Tone control signal in VCA
(Voltage Controlled Amplifier) filter. 'ln
accordance with set tone, the voltage level of
these terminals change the cutoff frequency
of the sound.
PF5 - Resonance control signal in VCF
(Voltage Controlled Filter). When the terminal
is Low, resonance effect is given to the sound.
Tone
PF4
PF5
PF6
PF7
Saxophone
Low
Low
Hish
High
Trumpet
High
Low
High
Low
Synth. Reed
Low
High
High
Low
Oboe
Low
Low
Low
Low
Clarinet
Low
H ig h
Low
Low
Flute
Low
High
Low
Low
4 9 - 5 5
PDO - PD6
Out
LED drive signals
56
P D 7
Out
APO (Auto Power Off) signal. When the horn is
not played for six minutes, the voltage of the
terminal drops to Low level causing the voltage
VCC (+9 V) to shut off.
57
STOP
Not used. Connected to VDD
58
VDD
l n
+5 V source
5 9 - 2
PAO - PA7
Out
Digitized breath strength data
[;sa 4 2{ 6
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