Clavia Nord Wave 2, Руководство пользователя

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26 | nORD WaVe 2 USeR ManUal OS V1.0x
BanD PaSS - BP
The BP (band-pass) filter allows frequencies close the filter frequency
setting to pass, while frequencies above and below the cutoff are atten-
uated. This can for instance be used for producing narrow, nasal or very
“controlled” sounds - its exact character depending on filter frequency
and resonance settings.
fIlTeR fReQUencY
The morphable filter FREQ knob is used for setting the
cut-off frequency point - that is where in the frequency
range the filter begins to process frequencies. The
actual result of this processing depends on the type of
filter used.
The Image above illustrates three different filter frequency settings using
a low pass filter. The area to the left, up to the downward slope indicates
the frequencies that passes through the filter. The area to the right of the
slope are those frequencies that are reduced. Move the slope to the left
and the sound gets duller. The “humps” at the top indicates a resonance
setting.
fIlTeR ReSOnance
The morphable Resonance ( RES ) parameter is used to
further adjust the characteristics of the filter. Increasing
the Resonance will emphasize frequencies around the
cutoff frequency, making the sound thinner.
further raising the Resonance will make the sound
resonant to a point where the filter starts to self-oscillate and produce
a ringing pitch. exactly where in the frequency spectrum this “ringing”
occurs, depends on the frequency value.
When the
LP/HP
filter setting is used the
RES
knob instead controls the
high-pass cut-off frequency, as indicated by the FREQ HP text.
KB TRacK
The reason for controlling
keyboard track
is related
to basic acoustics. If the pitch of a waveform is
raised, the harmonics naturally raise in frequency
as well. If the cutoff frequency is constant, the
sound will be perceived as getting “muddier” the higher up the keyboard
you play. To avoid this effect, use
KB TRACK .
KB TRacK SeTTInGS
Off (no leDs being lit): The filter frequency cut-off point is not altered by
the note played.
1/3 : The cut-off frequency will track the keyboard in a 1:3 relationship.
Play one octave higher and the cutoff frequency will move by 1/3 of an
octave.
2/3
: The cut-off frequency will track the keyboard in a 2:3 relationship,
play one octave higher and the cutoff frequency will move by 2/3 of an
octave.
1
: The cut-off frequency will track the keyboard in a 1:1 relationship.
The diagrams below illustrate the relationship between keyboard posi-
tion and cut-off frequency at the 1:1 and 2/3 settings:
DRIVe
activating
DRIVE
adds distortion to the filter stage. The
1
,
2
and
3
set-
tings represent low, medium and high amounts of drive respectively.
Using Drive with high Filter Resonance settings will often produce
fun and/or interesting results.
enV aMT
The ENV AMT knob governs the amount of modulation to the filter fre-
quency by the filter envelope.
Filter Frequency
freq
gain
12 dB/Oct 12 dB/Oct
filter frequency
freq
gain
freq
gain 1:1 Tracking
freq
gain
2/3 Tracking