Numerical Audio has announced the release of FD-1, a semi-modular effect including dedicated filter, delay and modulation sections.

Numerical Audio FD 1

FD-1 is built around a virtual analog filter section paired with a stereo delay and topped off with an analog-style step sequencer and LFO.

At it’s core, FD-1 is designed to create filter rythms and grooves by first sending the signal through a modulated filter section before feeding it to a delay stage but it goes much further than that.

Built-in Step Sequencer and Low Frequency Oscillator serve as modulation sources and are ideal for creating rythmic filter sequences either free running or tempo-synced to a host application.

However, due it’s semi modular nature, not just filter cutoff but every control within FD-1 can be a modulation target allowing for an increased range effects and combinations ranging from Chorus and Flanger type effects over Analog and Tape Style echos to complex Stutter and Repeat effects.

FD-1 features

  • VA Multi Mode Filter with 2 & 4 Pole options.
  • Digital Stereo Delay with Tempo Sync and Time Range Control.
  • Analog Style Step Sequencer.
  • Low Frequency Oscillator.
  • Easy to use Mod Matrix.
  • Input Low-Cut and Drive Controls.
  • Individual Return Levels for Filter and Delay.

FD-1 is available from the App Store for $4.99 USD. The app requires iOS 11 or higher and comes in standalone and AUv3 formats.

More information: Numerical Audio