sOURnd Try sounds Your engines

Ecosystem / Pitch

Octunder

One and two octaves down.

Analogue-style sub octaves: square-wave subs one and two octaves down that answer instantly and follow your dynamics, rounded by a tone control. Single notes only, like the circuits it is modelled on in spirit.

● Freeorg.sournd.pitch.octunder

Hear it

The real engine runs in your browser. Try the test sounds, your own file or a microphone, move the parameters or press Randomise, and switch bypass to compare.

Details

Engine id
org.sournd.pitch.octunder
Category
Pitch
Type
Octaver
Licence
Free (Apache-2.0)
Version
1.0.0
Parameters
8
Latency
1 samples (0.0 ms at 48 kHz)
Tail
0.6 s
Sidechain input
no
Channels
mono or stereo

Parameters

The id is the C ABI parameter id and the JUCE parameter id (as a decimal string).

IdKeyNameMinMaxDefaultUnitTaper
0sub_levelSub010080%linear
1sub2_levelSub 201000%linear
2dry_levelDry0100100%linear
3tone_hzTone60120003000Hzlog
4trackingTracking010060%linear
5gate_dbGate-80-20-60dBlinear
6release_msRelease1050060mslog
7output_dbOutput-24120dBlinear

How it is made

Original sOURnd design blending general techniques: a pitch-tracking low-pass (YIN tracker) ahead of a Schmitt trigger with envelope-relative hysteresis, two toggle flip-flops as frequency dividers with polyBLEP band-limited edges, envelope scaling with a soft gate and a two-pole tone filter. Voicing informed by our own measurements of analogue-style octave pedals.