Korg MICRO Manual Do Utilizador
25
TYPE
-12dB BPF (
):
-12dB/oct BPF (Band Pass Filter)
allows a frequency band in the re-
gion of the cutoff frequency to pass,
and cuts the remaining frequencies.
It is used when you wish to empha-
size only a specific portion of the
frequency range.(➝Figure 6-2)
Use this when you want to empha-
size just a specific region of the
sound. For example, you can use
this to create a bandwidth-limited
sound similar to sound heard from
a small radio or a telephone.
allows a frequency band in the re-
gion of the cutoff frequency to pass,
and cuts the remaining frequencies.
It is used when you wish to empha-
size only a specific portion of the
frequency range.(➝Figure 6-2)
Use this when you want to empha-
size just a specific region of the
sound. For example, you can use
this to create a bandwidth-limited
sound similar to sound heard from
a small radio or a telephone.
Filter oscillation
If you raise the resonance to a high value, it will oscillate (produce a
sound) at the frequency specified by the cutoff frequency. You can use
filter oscillation ("self-oscillation") as a sound source. If the filter is
oscillating, the "CUTOFF" parameter that normally adjusts the tone will
instead control the pitch of the oscillation. This can be used in a variety of
ways. Whistling is a typical example, and can be produced by adjusting
the ADSR parameters of the filter EG. You can also try setting "FILTER EG
INT" to a negative value. Another possibility is to select the MOD wheel
or LFO 1/2 as a source in Virtual Patch, and use it to control "CUTOFF" as
a destination.
If you raise the resonance to a high value, it will oscillate (produce a
sound) at the frequency specified by the cutoff frequency. You can use
filter oscillation ("self-oscillation") as a sound source. If the filter is
oscillating, the "CUTOFF" parameter that normally adjusts the tone will
instead control the pitch of the oscillation. This can be used in a variety of
ways. Whistling is a typical example, and can be produced by adjusting
the ADSR parameters of the filter EG. You can also try setting "FILTER EG
INT" to a negative value. Another possibility is to select the MOD wheel
or LFO 1/2 as a source in Virtual Patch, and use it to control "CUTOFF" as
a destination.
Figure 6-5
Time
Note on
Note off
Cutoff
Sustain Level
Attack
Time
Decay
Time
Release Time
Figure 6-6
Note on
Note off
Note on
Note off
Cutoff
Int=+32
Int=0
Int=+63
Time
Cutoff frequency
specified by
“Cutoff”
specified by
“Cutoff”
Figure 6-7
Cutoff frequency
specified by
“Cutoff”
specified by
“Cutoff”
Note on
Note off
Note on
Note off
Cutoff
Int=–32
Int=0
Int=–63
Time
6.
FILTER
— SYNTH
FILTER KEY TRACK
Keyboard Track operates ac-
cording to the pitch that is con-
trolled by pitch bend, and trans-
pose. It is not affected by pitch
changes produced by vibrato or
Virtual Patch.
cording to the pitch that is con-
trolled by pitch bend, and trans-
pose. It is not affected by pitch
changes produced by vibrato or
Virtual Patch.
Figure 6-2
BPF (Band Pass Filter)
Cutoff
Frequency
-12dB HPF (
):
-12dB/oct HPF (High Pass Filter)
allows frequencies above the cutoff
frequency to pass, and cuts the
lower frequencies. Use this when
you wish to make the sound thin-
ner. However if the cutoff frequency
is raised excessively, the volume
will decrease significantly. (➝Fig-
ure 6-3)
For example you can use the HPF
to purposely attenuate the low-fre-
quency region of a sound that will
be played together with other low-
frequency instruments, in order to
differentiate that sound from the
other instruments.
allows frequencies above the cutoff
frequency to pass, and cuts the
lower frequencies. Use this when
you wish to make the sound thin-
ner. However if the cutoff frequency
is raised excessively, the volume
will decrease significantly. (➝Fig-
ure 6-3)
For example you can use the HPF
to purposely attenuate the low-fre-
quency region of a sound that will
be played together with other low-
frequency instruments, in order to
differentiate that sound from the
other instruments.
Figure 6-3
HPF (High Pass Filter)
Cutoff
Frequency