ARTURIA – ORIGIN – USER’S MANUAL
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[
Audio
]: This is the audio output of the filter. It can be connected to another filter (for a
serial filter connection) or directly to a VCA input.
9.1.1.2.4
Jupiter-8 filter
This oscillator is an emulation of the filter used in Roland’s Jupiter-8 synthesizer. With 8 note
polyphony and an extensive array of features, the Jupiter-8 was capable of generating a wide
variety of sounds. To this day, it is still heard on numerous records due to its warm analog sound.
Famous players include: Howard Jones, Tears for Fears, Ultravox, Michael Jackson (used on his
“Thriller” album), Moby, David Bowie and Alicia Keys.
The Jupiter-8 filter is one of the most beautiful and thin analog filters. Unlike most other analog
filters, the Jupiter-8 filter doesn’t self-oscillate with higher resonance settings. Due to it’s
somewhat less aggressive behavior compared to for example the ARP filter, the Jupiter filter is very
versatile and can be used for various types of sound. On top of that, you’ll don’t have to worry
about overloading your mix with a high resonance peak!
The Jupiter-8 filter
-
The [
Frequency
] knob sets the cut-off frequency of the filter.
-
The [
Resonance
]
knob sets the amount of resonance (also called “Q”). The resonance
determines the amount of amplification of frequencies close to the cut-off frequency. The
other frequencies are either unchanged (below the cut-off frequency) or reduced (above
the cut-off frequency).
•
The Types:
The [Type] selection box selects the filter type. It offers three types:
-
[
4P LP
] or [
2P LP
] (Low pass filter). In this mode the filter progressively attenuates
frequencies above the cut-off frequency. [4P LP] selects a 4-pole (24dB/Oct) slope, [2P
LP] selects a 2-pole (12dB/Oct) slope.
-
[
HPF
] (High pass filter). This filter acts as the inverse of a low pass filter. It progressively
attenuates frequencies below the cut-off frequency. This filter has a 1-pole (6dB/Oct)
slope.
NOTE:
The original Jupiter-8 synthesizer lines use a special serial 1-pole HPF and a 2p/4p LPF
connection. You can emulate this configuration by connecting two Jupiter-8 filter modules in
series. Choose a high pass filter on the first and a low pass filter on the second filter.
•
The Input connections:
-
[
Audio
]: This is the audio input of the filter. You can connect it to the output of an
oscillator or a mixer if you use several oscillators (or other audio modules).
-
[
FM
]: This input allows you to connect sources to modulate the cut-off frequency of the
filter. The envelope or LFO are the most common modules to modulate the cutoff
frequency. The result is interesting for filter sweeps or “wah-wah” like sonorities.
-
The
Amount
knob allows you to set the depth of the selected modulation.
