SXP’s formant synthesizer “Choir” is now available for free!
This article covers the download details and an overview of Choir.
What Is SXP “Choir”?
Choir is an 8-voice polyphonic formant-filtering synthesizer. Using the X/Y slider, you can continuously morph between five vowels (A, E, I, O, U), and each formant can be stretched individually. With five formant sets (bass, male, female, child and monk), it can even produce otherworldly voices.
Key Features
- 5-band formant filter
- Adjustable vowels (A / E / I / O / U)
- 5 formant sets (bass / male / female / child / monk)
- 8-voice polyphony
- Stereo spread
- LFO (0.1 to 100 Hz)
- MIDI control
- 15 automatable parameters
- Supported OS: macOS 10.13 (High Sierra) or later, Windows 10 (2016 Anniversary Update) or later
How to Download and Install Choir
From the official website, go to the download page via “Download”, then click “Download for Mac” (.pkg) or “Download for Windows” (.exe) to get the installer and install it.
That wraps up the free release information for Choir.

