Studio Electronics midimini V30, User Manual, Page: 21 / 44

9f
FILTERS & MODIFIERS
!
Y es Sir That’s My Contour
The Filter attenuates, or truncates the higher frequency
components—those which lie above the adjustable cuto
ff
frequency—and passes the lower frequency components of
the audio signal. The V30 is
fi tted with the Midimini’s 4 pole LP
transistor ladder 24 dB per octave fi lter, with 10Hz-32kHz
frequency response. Play, sequence, trigger a note, and
harmonic content produced above the Cuto
ff frequency is
reduced by the fi lter on a 24dB/Octave slope. Everything below
gets a hall pass. Is there a synthesizer e ff ect that says
Subtractive Synthesis more de fi nitively? Every fi lter sweep,
manual or modulated, recorded or live, screams no sir/ma’am.
MOD
On/o ff switch for modulation sources coming from the Modmix
ampli fi er, to control the Filter Cuto ff —controlled by a
connected MIDI modwheel.
CUTOFF
Sets the maximum fi lter frequency: the lower the cuto ff
frequency, the less harmonic content the waveform will retain
after passing through the
fi lter. A wave shape rounding and
smoothing occurs as this cuto ff frequency is reduced.
EMPHASIS
Sets the fi lter Resonance. The resonance, or “Q,” emphasizes,
or boosts, the cuto ff frequency region, making the presence of
harmonics more apparent. Self-oscillation as the knob passes
the 3 o’clock position, resulting in a pure sine wave and can be used as a separate tone source. Resonance is in fact positive
feedback—a signature sound of subtractive synthesis.
CONTOUR
Sets the depth of the Envelope 1 ( fi lter) modulation amount as it is applied to the fi lter cuto ff frequency. The shape of the fi lter
envelope is determined by the contouring controls attack, decay, sustain, and release. Our CONTOUR draws the CUTOFF down, an
accidental "feature" of the MiniMidi that is actually useful and one of its trademark quirks.
FILTER ENV SERMON: The Filter envelope shapes the timbre and overtone content of the audio signal as it fl ows from the circuitry
of the mixer. This envelope or contour generator is used to dynamically move the cuto ff frequency. It works as such: Each time a
note or noise is triggered, an envelope or contour generator attached to the Filter’s cuto ff frequency is actuated, and sends a control
signal to the fi lter. The control signal rises at one rate (attack), falls at a second rate (decay), levels out to a certain point (sustain), and
then fi nally falls o ff at a third rate (release), determined by the decay stage as it tied to the release stage. Near exact details to follow.
KEY TRACK 1/3
Routes the Oscillator pitch CV to the Filter so the sound will brighten as you play up the keyboard 1/3 strength.
Midimini V30 User Manual
Rev. 1.29.20
21
© Analogia Inc. 2020