DCSI has released V-Koder, a free sample based synth instrument, originally recorded, designed and edited by DCSI, bringing you 3 vocoded, nonsense, short voices.
The vst is available both at 32 bit or 64 bit for your needs.
The soundsets included in this VST are spread in 3 octaves and available as follows:
The use of the modwheel in your midi controller add a pan lfo effect. The instrument comes with velocity sensitivity.
On the GUI for further settings you can find 4 knobs to adjust: Gain, Attack, Release, Reverb.
V-Koder VSTi is a simplyfied version of the V-Koder Kontakt instrument by DCSI available for free download too.
More info: V-Koder – free instrument for Kontakt and VSTi