hear it in action

prisma is a...pitch
quantizer
prisma splits the signal into tiny pieces (bins), snaps the bins to nearest in-scale frequencies and reassembles them back into an audio signal, while trying to preserve phase relations of the original signal.
Pitch quantization is great for adding tonality to your sounds or retuning them to better fit the key of your track.
Color values above 100% introduce additional filters on top of the pitch quantizer, useful for creative sound design!
prisma does...pitch
shifting
prisma is a clean pitch shifter capable of working with polyphonic content with minimal artifacts, reduced ringing and improved transient preservation.
Shifts from 1 octave down to 1 octave up, and anywhere in between!
prisma is a...formant
shifter
prisma is an easy-to-use formant shifter for greater control over the sound. It is capable of shifting pitch and formants independently.
Change the Voicing parameter to fine-tune the formant shifter to your liking. Works well on vocals :3
prisma is...clean and
optimized
Clean sound. Clean UI. Light on your CPU :3
Reduced artifacts, ringing and CPU usage compared to alternatives. Note that because it's an FFT-based effect, it has noticeable latency (around 85ms @ 48kHz).

ui overview

Hover over UI elements to read more

Formant Shifter

  • A formant shift control. By default it is linked to the Pitch control
  • Hold CTRL for finer control
  • ALT + Click links it back to the Pitch

Pitch Shifter

  • Does exactly what you think it does :3
  • Hold CTRL for finer control
  • ALT + Click resets it back to zero

Pitch Quantizer

  • Makes everything sound color-bassy. Works by snapping partials to the chosen key
  • Values more than 100% introduce additional filters on top
  • ALT + Click resets it back to zero

Low Cut

  • Low cutoff for the pitch quantizer - frequencies below the cutoff won't be affected by it
  • Hold CTRL for finer control
  • ALT + Click resets it back to default

High Cut

  • High cutoff for the pitch quantizer - frequencies above the cutoff won't be affected by it
  • Hold CTRL for finer control
  • ALT + Click resets it back to default

Algorithm Selector

  • Basic - clean algorithm with characteristic ringing artifacts you get from FFT-based effects
  • Crisp - reduced ringing and improved transient response at the cost of some distortion
  • Harmonic - attempts to preserve harmonic ratios between frequencies

Dry/Wet

  • Just a simple mix knob, useful for some nice doubling effects
  • Hold CTRL for finer control
  • ALT + Click resets it back to 100%

Extra Parameters

  • Click or hold SHIFT to show "extra" parameters.
  • Voicing: determines the precision of the spectral envelope algorithm, affecting the character of the formant shifter
  • Smoothing: controls how much the coloring/pitch snapping is applied. 0% makes the pitch hard-snap to scale, making the sound more "autotune-y"

Scale Options

  • Enable midi mode: make the scale dynamically react to incoming midi
  • Change tuning: for your microtonal needs
  • Choose a scale from pre-made presets

Scale Selector

  • Choose any scale that works well within your project
  • Affects the color of the Pitch Quantizer

Resize

  • Drag this to make the interface however large or small you want

Bypass

  • A simple on/off switch
  • Doesn't click when switching it on or off and doesn't waste CPU power when disabled
  • The plugin automatically disables any processing when there's no incoming signal