MATRIXSYNTH: Ritual Electronics Altar // State variable Eurorack filter with lots of CV control

Wednesday, February 13, 2019

Ritual Electronics Altar // State variable Eurorack filter with lots of CV control

Published on Feb 13, 2019 DivKidVideo

"**TIMING INDEX / SECTIONS BELOW** I was pleased to see Ritual Electronics announce Altar after first enjoying Miasma and working with them on that demo (link below). Altar is a state variable filter that rather than switching between low, band and high pass modes allows you to vary and blend between them both with the knob AND with CV control. That's a fairly unique feature as you rarely see CV controlled filter types/states on modules. There's also CV over cut off frequency and resonance all with attenuverters and a second cut off control with the 1v/oct input. Finally there's a nice asymmetrically clipping gain stage on the input to push things that bit harder for filter burn and a bit of saturation.


00:00 Hello and previews

01:22 Feature run down

02:31 Low pass sweeps and sounds

04:28 High pass sweeps and sounds (plus saturation comparison)

05:28 Band pass sweeps and sounds

6:00 Bassline patch with modulation

08:07 Filtering Miasma distorted drums

09:31 Creating feedback trails around a delay and adding character and animation with filtering the repeats

11:49 Audio rate modulation of cut off, colour & resonance

15:07 Animated and more complex filtering for drone patches

16:16 Self oscillation turning the filter into a sine wave VCO

16:45 Synthesising drum and percussion sounds

17:50 303 style acid patch

18:23 Filter FX and reverbs for multi-dimension sound layers

20:08 Rhythmic random modulation

21:37 Exploring both pre and post distortion around the filtering with Miasma"

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