Speektra By Puremagnetik Is A Retro Chipspeak Synthesizer Plugin For PC & Mac!

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Speektra is a new retro chipspeak Synthesizer plugin for PC & Mac that produce robotic vowel sounds using the VOISM synthesis technology.

Puremagnetik has announced today the release of Speektra, a new speech simulation Synthesizer that is based on the VOISM method developed by Kaegi and Tempelaars. Speektra uses bursts of pulses with formant characteristics to synthesize robotic vowel sounds.


VOSIM (VOice SIMulation) sound synthesis is based on the idea that by employing repeating tone-burst signals of variable pulse duration and variable delay, a sound output of high linguistic and musical expressive power can be obtained. – Journal of the Audio Engineering Society, June, 1978

The Puremagnetik implementation of VOSIM stretches things a bit further, allowing you to seamlessly morph between vowels, manually or via a modulator. You can also choose your voice register (Bass to Soprano). Designed with a versatile set of controls, Speektra excels as a lead voice synth, a percussive vocal, or a choral drone.


  • VOSIM-based vocal synthesis.
  • Manual or modulated control of vocal morph functions.
  • Random function for inter-note modulations.
  • Voice register selection.
  • Integrates into any VST / Audio Units compatible host.
  • A collection of factory presets.

Speektra for Windows and Mac (VST/AU) is available now as part of Puremagnetik’s Spark subscription for $8 USD per month. After one month it will become back-cataloged for a la carte purchase at $20 USD.

More information here: Puremagnetik 

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