The Orb by AudioThing

Formant and Vowel Filtering Instrument

The Orb is a formant-based filter effect designed to imprint the spectral characteristics of the human voice onto any sound. By focusing on vocal formants rather than traditional EQ curves, it creates vowel-like resonances that feel organic, expressive, and instantly recognizable.

Instead of operating as a static filter, The Orb is built for motion and performance. Its design encourages continuous movement between vowels and formant shapes, allowing sounds to speak, sing, and morph in ways that feel alive.

Three-Formant Voice Modeling

At the heart of The Orb are three band-pass filters tuned to represent vocal formants. These filters work together to define the perceived vowel character of the sound, shaping the spectrum in a way similar to the human mouth and throat.

Multiple vowel sets provide different tonal foundations, ranging from deeper and fuller formants to brighter, lighter ones. This makes it easy to match the effect to a wide range of sources, from bass-heavy synths to delicate pads and percussive material.

Modulation and Expressive Movement

The Orb includes multiple modulation sources dedicated to animating the formants. Vowel selection can be smoothly morphed over time, while resonance emphasis adds intensity and focus to the vocal character. A dedicated drift control shifts formant frequencies, introducing subtle instability or dramatic spectral movement.

These modulation options allow The Orb to function as more than a simple vowel filter. Depending on settings, it can behave like a talking filter, a sweeping phaser, a rhythmic processor, or an evolving sound design tool.

Custom Vowels and Personal Expression

Beyond the included vowel sets, The Orb allows users to define their own custom vowels. Each vowel can be named and tuned by adjusting the frequencies of the three formants, making it possible to create entirely new vocal characters.

Custom vowel sets are stored with presets or sessions, encouraging experimentation and personalization. This flexibility turns The Orb into a platform for exploring vocal-like synthesis rather than a fixed-effect processor.

Creative Applications

The Orb excels at adding personality and motion to static sounds. Synth leads can speak and phrase, pads can evolve with subtle vowel movement, and rhythmic material can gain an almost human articulation. It is equally effective in electronic music, experimental sound design, and cinematic scoring.

By translating the mechanics of human speech into an intuitive and visual control system, The Orb offers a distinctive way to animate sound. It is a tool for producers and sound designers who want filters that communicate, not just shape.