Mode 10: 16 harmonics with two parameter noise control
This mode is similar to Mode 0, with the following exceptions:
–
No phase modulation.
–
modulation 2
is used for modulating the setting of
adjust 2
(see its description below;
modulation 1
still
controls the noise amplitude).
–
adjust 1
and
adjust 2
are both used for noise adjustment. Their operation is described in the following.
adjust 1
works in the same way as in Mode 0, i.e. when turned fully CCW (until the overload led blinks) the noise
is minimized, and turning it CW noise gradually increases.
adjust 2
works by varying the duration of the noise
injected to the periodic waveform. Because the noise acts as an additive phase component for sinusoidal harmonics,
increasing the duration beyond the sinusoid period will cause frequency shift. Turning it CCW until the led blinks
minimizes the duration, and then the noise is similar as in Mode 0. When
adjust 2
is turned CW, the noise injection
period slowly increases. This has the effect of randomly varying the frequency of all the harmonics.
adjust 1
continues to adjust the amplitude of the noise (multiplied by the envelope connected to
modulation 1
), so there will
be varying effects when these two are adjusted.
When the noise injection period with
adjust 2
is kept moderate, and the amplitude of noise is varied with
adjust 1
,
there will be clicking-type noise with varying strength (modulated by
modulation 1
input). When
adjust 2
is
turned more CW, the effect will sound more like random frequency hopping of the harmonics, rather than noise.
The hopping period is increased with increased CW turning of
adjust 2
, so the signal spends more time at the
random frequencies. Notice that the range of
adjust 2
is several tens of full rotations, so you can hear the frequency
hopping slowly slow down when you turn it CW. Again, it is convenient to connect
modulation 1
to the
D.C. out
-terminal for testing or adjustment trials.
The envelope connected to
modulation 2
has the effect of multiplying the setting of
adjust 2.
If it is 0V or left
open, the noise injection period remains at zero, therefore
adjust 2
has no effect; the same applies to
adjust 1
/
modulation 1
. Again, for testing, or if you just want to keep the noise parameters constant, connect
D.C. out
to
modulation
1&2
.
Tip:
In other modes that have the phase noise adjustment, the bandlimited noise slowly increases. In this mode the
audible effect is effectively multiplied by
adjust 2
. Therefore, if you first do a large rotation of
adjust 1
, and only
then turn
adjust 2
CW, the result is very chaotic frequencies within the full audible spectrum. Therefore it is
recommended that you work by turning successively a little both
adjust 1
and
2
, and listen how the combined effect
varies the sound.
Mode 11: 8 harmonics with individual two parameter noise control
This mode is similar to Mode 10, with the exceptions:
–
only 8 harmonics
–
the noise modulation amplitude for the 8 harmonics is individually controlled by sliders 9 - 16. Thus selected
harmonics can be kept noise free by keeping their sliders at minimum, while others have adjustable noise
strengths determined by their slider settings as described in Mode 10.
18