Vocoders rely on two signals being present at the same time in order to operate. These signals are the Carriersignal, which normally takes the form of a synth, and the Modulator signal, which normally takes the form of a human voice, although other instruments can work well (such as drums).

ReVoicer / Spectrum Filter-Bank Vocoder Oscillator

The Modulator signal is analysed by the vocoder and broken down into a number of frequency bands. The more bands that are available, the better quality of the analysis, which means that a clearer vocoded sound will be available. A typical Vocoder synthesizes a modulator (usually a voice) in the right channel of a stereo track with a carrier wave in the left channel (any active sound) to produce a vocoded version of the modulator (right channel).

https://soundcloud.com/theturn2on/voice-test1-vocoder-revoicer-re-spectrum-filter-bank-vocoder-osc

What makes the ReVoicer different from a typical Vocoder? It is a Stereo Spectrum filter-bank Vocoder with an Internal Oscillator that can work as Oscillator Instrument, or Internal Carrier to synthesise vocoder sound. 
The External Carrier stereo inputs can be used, or use/mix the Internal oscillator (which includes basic waveforms such as Pulse, Saw, Tri, Sub and Noise), to vocode the Modulator inputs. The Internal Oscillator can also be used as a simple Oscillator (it can be processed by the Vocoder) and as part of a vocoder (internal carrier) for fast results without the need to create any external Carrier device in Reason’s rack. 
ReVoicer is a modern stereo Vocoder with internal oscillator, limiter and spectrum frequency control. It allows for a lot of vocoder variations in order to create unique Vocoder textures for any vocal or instrument sound.

ReVoicer comes with a variety of patches including 70+ Combi vocoder FX patches. 
Think about Vocoder? Try today ocean of Vocoder textures with ReVoicer.

https://soundcloud.com/theturn2on/drum-test1-revoicer-vocoder-osc-filter-bank
https://www.propellerheads.com/shop/product_page/11871