Iron Ether - Arcing Prisms

Frequency shifter delay

Arcing Prisms combines a frequency shifter and a comb filter/delay line, locked together in a spiraling feedback loop of warped modulation.

The frequency shifter works differently from the more common pitch shifter - instead of shifting all of the harmonics of your signal proportionally, a frequency shifter shifts everything linearly. At low shift amounts, this results in watery, phaser-like modulation. With larger shifts, it transforms the harmonic makeup of your sound to create a variety wooden and metallic tones similar to marimbas, vibraphones, bells and gongs. Unlike synthesizer pedals, there is no pitch tracking, so it is fully polyphonic and all playing techniques can be used without glitching.

The frequency shifter is placed inside the feedback loop of a delay line, so that every time the sound is repeated, it gets shifted again. With subtle shift amounts and short delay times, this feedback accentuates the phaser-like filtering and cancellation of various frequencies, accessing an unexplored realm of sounds with elements of phasing, flanging, filtering, and vibrato all at the same time. With larger shift amounts and longer delay times, this feedback creates otherworldly gamelan-like arpeggios with timbres that shift with each repeat, or evolving synthetic textures.

The large hexagon mode gives access to the full range of delay times (up to around one second) and frequency shifting, perfect for far-out sound design. The small triangle mode limits the delay line to very short times and the shifting to only a small range around 0, making it easy to dial in more mellow modulation tones.

Expression control can be routed to delay time, frequency shift amount, or feedback, with an expression attenuator built in to dial in the perfect range of control. Using an expression pedal with Arcing Prisms opens up many unique and musical avenues of articulation.

https://ironether.com/pedals/arcingprisms/