Presets

All presets (should be) compatible with latest firmware
Discussion thread: https://forum.orthogonaldevices.com/t/a773-presets-unit-files

Loading in the ER-301 (without having to worry about which unit was used as container):

1. press “insert”
2. press S3 again (“Presets”)
3. browse to the file
4. press “enter” to load

Synth building blocks

• ad - AD envelope
• ad exp - Exponential AD envelope
• ad exp var - AD envelope with variable exponential response
• decay env - Decay envelope
• glitch osc - Glitchy, circuit bend style oscillator
• rce sine - Simple recombination engine (sine genes)
• rce tri - Simple recombination engine (triangle genes)
• sloth - Slow random/chaos
• stepped random
• stepped random x6 - 6x stepped random

Voices

• 2op-fm - Two operator fm voice
• bass pluck - Simple plucky bass voice
• karplus - Karplus strong voice

Drums

• bd1 - Decent kick drum
• bd2 - Better kick drum

Trigger/gate

• gated burst
• gate to trigger

Audio mangling

• buffer player
• stutter

Effects

• cheap reverb 1
• cheap reverb 2
• cheap reverb 3
• cheap reverb 4
• mono to stereo 1
• mono to stereo 2
• poor mans reverb 1
• poor mans reverb 2
• tuned resample

Synth building blocks

ad

AD envelope with variable attack and decay, works with short triggers as input.
Unit type: custom-unit
CPU: 3.3%
Controls:

• attack (0-5s)
• decay (0-5s)

ad exp

AD envelope (exponential response) with variable attack and decay, works with short triggers as input.
Unit type: custom-unit
CPU: 4.8%
Controls:

• attack (0-5s)
• decay (0-5s)

ad exp var

AD envelope (variable exponential response) with variable attack and decay, works with short triggers as input.
Unit type: custom-unit
CPU: 5.6%
Controls:

• attack (0-5s)
• decay (0-5s)
• exp (0-1)

decay env

Very cheap decay envelope with exponential decay. This is just a slew-limiter with feedback (no fancy GUI) to keep it cheap. Adjusting time, might require adjusting the negative gain on the feedback. A bit unstable in a charming way.
Unit type: slew-limiter
CPU: 0.24%
Controls:

• time: 3ms-786.32s

glitch osc

Glitchy, circuit bend style oscillator
Unit type: Custom Source
CPU: 4.6% Controls:

• v/oct
• gate (silent when gate low)
• center (0-1)
• width (0-1)
• fade (0-1)

rce

Simple implementation of a recombination engine. One version with triangle "DNA" the other with sine. Unit-type: Custom source
CPU: 7% Controls:

• scissor (v/oct)
• center (-1 .. +1)
• width (0-1)
• fade (0-1)
• positive (v/oct)
• positive offset (-0.5 .. +0.5)
• negative (v/oct)
• negative offset (-0.5 .. +0.5)

sloth

Inspired by the non-linear circuits sloth chaos eurorack module.
Unit-type: Custom Source
CPU: 3.84%
Controls:

• slowness: (0-1)

stepped random

Generte random value on trigger.
Unit type: Custom Source
CPU: 0.9%
Controls:

• trigger

stepped random x6

6x stepped random in one. One random value is the actual output, the others can be reached inside the unit as rand1-5. Advantages over stepped random is:

1. a bit lighter on the CPU pr random (0.78% vs 0.9% for stepped random)
2. convenient if you need lots of random

Unit type: Custom Source
CPU:4.7%
Controls:

• trigger

Voices

2op-fm

Percussive FM voice inspired by the 2opfm module by Super Synthesis
Unit type: mixer-channel
CPU: 8.4%
Controls:

• v/oct
• ratio (0-1)
• index (0-20)
• release (0-1s)
• gate

bass pluck

Simple plucky bass voice.
Unit type: mixer-channel
CPU: 8.4%
Controls:

• v/oct
• trigger
• release (0-6s)
• feedback (0-1)

karplus

Karplus strong voice.
Unit type: mixer-channel
CPU: 6.2%
Controls:????

• v/oct
• trigger
• brightness (0-1)
• damping (0-1)

Drums

bd1

No so versatile kick drum.
Unit type: mixer-channel
CPU: 8%
Controls:

• amp rel (amplitude decay time)
• pitch amt (pitch amount)
• pitch rel (amplitude decay time)

bd2

Quite versatile kick drum, with lots of sweet spots.
Unit type: mixer-channel
CPU: 10%
Controls:

• freq 0-1 (frequency env amount)
• decay 0-1s
• feedback 0-1

Trigger/gate

gated burst

Emits bursts while receiving a gate. The bursts are pulses with intervals of "burst time" and length "burst time/2".
Unit type: custom-unit
Controls:

• burst time: 0-1000 ms

gate to trigger

Converts incomming gates to triggers of selected length.
Unit type: custom-unit
Controls:

• trigger time (1-1000ms)

Audio mangling

buffer player

Grabs audio and play it pitched.
Unit type: two-bands
Controls:

• v/oct
• grab
• dry/wet

granulator 1

Plays loaded sample in granular bursts
Unit type: manual grains
CPU: 9.2% Controls :

• play trigger
• range (0-1)

granulator 2

Mangles incomming audio and plays it in granular bursts
Unit type: custom effect
CPU: 17.8% Controls :

• play trigger
• range (0-1)

stutter

Repeats snip of audio on gate high.
Unit type: Custom Effect
CPU: 7.0%
Controls:

• clock
• gate
• mult
• div

Effects

cheap reverb 1 + 2

Unit type: six-bands
CPU usage: 7.2%
Room size reverb that doesn't tax the CPU. Works on stereo channel, but is mono in, mono out.
Controls:

• size (0-1)

cheap reverb 3

Unit type: Custom Effect
CPU usage: 3.25%
Wonky delay based reverb, very light on the CPU.
Controls:

• wet (0-1)

cheap reverb 4

Unit type: Delay CPU usage: 1%
Wonky delay based reverb, extremely light on the CPU.
Controls:

• delay (0-1000ms)
• fdbk (0-1)
• wet (0-1)

mono to stereo 2

More sophisticated (using comb filters), better mono compatibility, but more expensive on the CPU.
Unit type: two-bands
CPU (on stereo channel): 18%
Controls:

• width (0-1)
• depth (0-1)

poor mans reverb 1

Granular reverb based on Neil Parfitts reverb idea, recording with a Dub Looper, with dub controlled by incoming signal.
Unit type: two-bands
CPU: ~24%
Controls:

• sense
• length (10ms-1s): length of grains
• speed (10-500Hz): speed of grains
• scrub (0-1): random scrubbing of playhead
• dry (0-1)
• wet (0-1)

poor mans reverb 2

Variation of poor mans reverb 1, but recording with a Feedback Looper for a different flavor.
Unit type: two-bands
CPU: ~16%
Controls:

• length (0-1s): length of grains
• speed (10-500Hz): speed of grains
• v/oct: pitch of reverb
• dry (0-1)
• wet (0-1)

tuned resample

Sample rate reduction, with pitch tracking.
Unit type: Two Bands
CPU: 4%
Controls:

• v/oct
• offset in v/oct
• dry/wet (0-1)