Petrichor

All ORU Audio Plugins run in the free open-source plugdata as a VST3, LV2, CLAP or AU.

ORU Audio presents Petrichor, neon rainmaker. Petrichor is a tri-engine granular delay plugin for creating stuttery, glitchy, otherworldly sound design.

Petrichor’s three modules run in parallel, each with unique processing. “Crush” is sample rate and bit rate reduction, “Vibe” is tape emulation, and “Shift” is granular pitch shifting.

Features

1) SOLO

Solos a specific module. Mutes the dry signal and any modules that are not soloed.

2) DOWNSAMPLE

Reduces the sample rate of the “Crush” module.

3) BIT REDUCE

Reduces the bit rate of the “Crush” module.

4) ANTI-ALIAS

Sweeps the cutoff frequency of a low pass filter down to the current downsampled Nyquist frequency, reducing aliasing artifacts.

5) SPEED

Controls the speed at which a given module’s delay signal is chopped.

6) SMOOTH

Smooths out the oscillator used to chop the delay signal of a given module.

7) PAN

Pans the delay signal of a given module.

8) MAIN GAIN CONTROL

Controls the gain level of a given module. Clicking the small square in the upper left activates or deactivates the module.

9) WOW

Controls the amount of wow applied to the “Vibe” module.

10) FLUTTER

Controls the amount of flutter applied to the “Vibe” module.

11) SATURATION

Controls the amount of tape saturation applied to the “Vibe” module.

12) GRAIN SIZE

Controls the grain size for the pitch shifting algorithm applied to the “Shift” module.

13) OCTAVE SHIFT

Sets the octave shift for the pitch shifting algorithm applied to the “Shift” module.

14) HIGH PASS FILTER

Sets the cutoff of a 2nd order high pass filter applied to the wet signal. 

15) LOW PASS FILTER

Sets the cutoff of a 2nd order low pass filter applied to the wet signal. 

16) FEEDBACK

Sets the global feedback for the delay lines of each module.

17) DIFFUSION

Diffuses the wet signal. Useful for creating reverb-like textures.

18) DRY

Sets the level of the dry signal.

19) WET

Sets the level of the wet signal.

20) INPUT GAIN

Adjusts the gain of the input signal.

21) OUTPUT GAIN

Adjusts the gain of the output signal.

22) RANDOMIZE

Randomizes the global parameters as well as every active module, with some parameters restricted to reasonable ranges. PAN, DRY, WET, IN and OUT are not randomized.