Tiptop Z3000 Smzrt VCO - Manual (Page 14)

FM - Continued: Modulation Index
The
amount
of
modulation
applied
to
the
second
oscillator
is
commonly
known
as
the
modulation
index.
The
modulation
index
is
controlled
by
the
FM
knob
on
the
Z3000.
It
is
difficult
to
calculate
the
actual
spectrum
of
the
resulting
sound
created
by
the
modulation
index,
but
the
more
modulation
applied,
the
more
complex
the
sound
gets,
resulting
in
noise
and
frequency
drift.
For
example,
increasing
the
modulation
index
of
a
sine
wave
modulating
another
sine
wave,
the
resulting
waveform
changes
from
a
sine
wave
at
modulation
index
0
(FM
knob
to
MIN),
through
increasingly
more
complex
waveforms,
ending
with
noise
at
a
very
high
modulation
index.
The
change
from
sound
to
noise
can
be
quite
sudden,
so
it
should
be
noted
that
a
small
amount
of
modulation
can
provide
more
desirable
results.
(Continued...)
MIN MAX
MIN MAX
LOW HIGH
SYNC HSM
1V/Oct 1V/Oct
Linear FM
INPUT
PWM FM 1
LOW HIGH
Hz
Oct
FM 2
INPUT
CV IN INPUT
CV IN CV OUT
INPUT INPUT
+
+ +
+
EXT IN
FREQUENCY/NOTE/OCTAVE
Tipt
p
A u d i o
Z 3 0 0 0 Z 3 0 0 0
Smart VC-Oscillator FREQUENCY
FINE TUNE
PULSE WIDTH
PWM
FM
FM
Modulation
Index
MIN MAX
FM
‘Safe Zone’