Voltage Controlled Filter (VCF)

VCF Frequency Slider (Green)

Arguably the most commonly used parameter on any synth, this changes timbre by subtracting frequencies and harmonics when progressively moving the slider downwards from its top position.

VCF Resonance Slider (Green)

Adds emphasis at the cutoff point and causes the filter to ‘self-oscillate’ when pushed towards the top of its range.

Filter Mode Switch

During its lifetime the Odyssey underwent three main filter revisions. In Oddity3 we have included versions of all three filters to give you the widest Odyssey soundscape possible and to provide a taste of the variations of each revision of this legendary instrument.

4075	The 24dB filter that replaced the 4035 and the one found on the MkIII Odysseys. Legend has it that there was a mathematical error that limited the upper frequencies of these to around 12-14KHz.
4035	The allegedly ‘Moog-infringing’ filter! We’re not going to add any further fuel to the fire except to say that the 4035 is a 24dB ladder filter similar to that found in the Minimoog.
4023	This filter was used in the early ‘whiteface’ Odysseys and is a 12dB filter more akin to that found on the Oberheim SEM than anything ARP or Moog. While retaining the 2-pole 12dB element, Oddity3’s version of this filter is slightly different in that we’ve added a bit of grit to its tone and also backed-off the resonance to avoid self-oscillation. This is because both the 4035 and 4075 self-oscillate with their own characteristics. Our 4023 is a little more ‘creamy’ without attenuating the bottom end at high resonance as much as the other two modes.

4075

The 24dB filter that replaced the 4035 and the one found on the MkIII Odysseys. Legend has it that there was a mathematical error that limited the upper frequencies of these to around 12-14KHz.

4035

The allegedly ‘Moog-infringing’ filter! We’re not going to add any further fuel to the fire except to say that the 4035 is a 24dB ladder filter similar to that found in the Minimoog.

4023

This filter was used in the early ‘whiteface’ Odysseys and is a 12dB filter more akin to that found on the Oberheim SEM than anything ARP or Moog. While retaining the 2-pole 12dB element, Oddity3’s version of this filter is slightly different in that we’ve added a bit of grit to its tone and also backed-off the resonance to avoid self-oscillation. This is because both the 4035 and 4075 self-oscillate with their own characteristics. Our 4023 is a little more ‘creamy’ without attenuating the bottom end at high resonance as much as the other two modes.

KYBD CV or S/H Mixer switch and Amount slider (black)

This switch selects between Keyboard CV (Tracking) and the S/H Mixer. Selecting Keyboard CV and feeding this signal into the VCF via the black slider, allows you to vary the keyboard tracking as it relates to the filter.

Choosing a slider position towards the bottom of the scale opens the filter more on the lower keys of your keyboard and decreases this effect as you play up the keyboard. Setting a slider position towards the top of the scale has the opposite effect.

Selecting S/H Mixer and feeding this signal into the VCF in conjunction with the S/H Mixer module sliders, allows for various effects as outlined in the Sample and Hold section.

S/H or LFO Sine Wave switch and Amount slider (yellow)

This switch selects between Sample and Hold and a Sinewave LFO source. Selecting S/H and feeding this signal into the VCF allows you to apply the sample and hold effect, as governed by the waveform shapes selected and applied in the S/H Mixer, to the VCF.

Selecting LFO allows you to apply a sinewave to the filter and modulate it at a speed determined by the LFO Frequency.

ADSR or AR switch and Amount Slider (red)

Oddity3 has two Envelope Generators which can be used to shape either the VCF or VCA. Here it’s possible to assign either to the VCF and use the red slider to feed varying amounts of the selected envelope generator to the VCF.