Fors Pivot: Algorithm-Free FM Synthesis

FM synthesis has been around since the 1980s, but Swedish company Fors is taking a fresh approach with Pivot - an FM synthesizer that throws traditional algorithms out the window. This isn't about recreating classic sounds; it's about exploring what FM synthesis can be when freed from conventional thinking.

A Different Kind of FM Synth

Pivot centers around three FM operators, but what makes it special is the continuous routing system. Instead of choosing between fixed algorithms, you can smoothly blend how the top operator (OP3) modulates either the second operator (OP2) or the carrier (OP1). This gives you intuitive control over your sound's character without the usual FM complexity.

The interface keeps everything visible on a single screen. The three operators stack vertically, with global controls along the bottom. Each operator shows a real-time waveform preview, so you can actually see how your modulation affects the sound at each stage.

Smart Controls That Make Sense

Each operator has identical controls that are easy to understand. The Ratio controls set frequency multiplication - whole numbers give harmonic sounds, while fractional values create more chaotic timbres. Level controls how much modulation each operator sends, while Feedback adds self-modulation for sharper or noisier textures.

The built-in envelopes (ADSR) shape each operator's behavior over time. Unlike many FM synths where envelopes can be confusing, Pivot keeps things straightforward - what you adjust is what you hear.

One neat touch is the phase sync and offset controls. You can choose whether operators reset their phase with each new note, helping maintain consistent timbres or adding organic variation.

Beyond Basic FM

Pivot includes a 4-pole morphing filter that can blend between lowpass, bandpass, and highpass modes. This adds classic subtractive synthesis power to the complex FM spectra, giving you the best of both worlds.

The modulation matrix provides two LFOs and two additional ADSR envelopes with six assignable destinations. The LFOs include shape morphing and skew controls, plus tempo sync options. You can route MIDI velocity to any destination too.

Voice controls handle polyphony (up to 16 voices), unison stacking, and note glide. There's also a mono mode with proper legato behavior for lead sounds.

Effects and Polish

Two built-in effects add final polish. Width creates stereo spreading without obvious chorus artifacts, while the distortion ranges from subtle warmth to complete destruction. Both process the final output in stereo.

Versions and Compatibility

Pivot comes in two versions: the full version (paid) and Pivot-Lite (free). Both use the same interface and preset format, making it easy to try before you buy. The plugin supports CLAP, VST3, and AUv2 formats on macOS, Windows, and Linux.

Advanced features include MPE continuous pitch bend, CLAP Note Expressions, and ODDSound MTS-ESP tuning support. The plugin is DRM-free and includes customizable color themes.

Bottom Line

Fors Pivot proves that FM synthesis doesn't have to be intimidating. By removing algorithmic complexity and adding continuous routing, it makes FM accessible while still offering deep sound design possibilities. Whether you're new to FM or tired of traditional approaches, Pivot offers a refreshing take on frequency modulation synthesis.