Sound Parameter
Blofeld User´s Manual
48
Resonance
0...127
Controls the emphasis of the frequencies around the cutoff
point. Use lower values in the range of
0…80
to give
more brilliance to the sound. At higher values of
80…113
the sound gets the typical filter character with a strong
boost around the cutoff frequency. When the setting is
raised to values above
113
, the filter starts to self-oscillate,
generating a pure sine wave. This feature can be used to
create analog-style effects and percussion-like electronic
toms, kicks, zaps etc.
Type
miscellaneous
Selects the filter type.
•
Bypass
deactivates the filter. This is useful if you
want to disable the filter temporarily and listen to
the oscillators’ pure signals.
•
LP 24dB / LP 12dB Low Pass
are suitable for most
normal applications. Use the 24dB slope if you want
to create sounds with a typical audible filtered
character; use the 12dB slope if you want to get
softer results.
•
BP 24dB / BP 12dB Band Pass
remove frequencies
both below and above the cutoff point. As a result,
the sound character gets thinner. Use these filter
types when programming effect and percussion-like
sounds.
•
HP 24dB / HP 12dB High Pass
are useful to thin out
a sound’s bass frequencies. This may also give
interesting results in conjunction with cutoff
frequency modulation. By doing this you can e.g.
"fly-in" a sound starting at its high harmonics and
then coming up to its full frequency range. Use the
24dB slope if you want to create sounds with a
typical audible filtered character; use the 12dB slope
if you want to get softer results.
•
Notch 24dB / Notch 12dB
are the opposites of the
band pass types. They dampen frequencies around
the cutoff point. Frequencies below or above the
cutoff point are passed through. Use these filter
types for programming effect sounds. On Notch filter
types, the Resonance parameter is almost useless by
definition because the resonance frequency is
exactly the frequency that is blocked by the filter.
However, you will still be able to hear slight
differences when you change the Resonance
because of phase changes. Anyway, the effect isn’t
that spectacular.
