Voice-Set Production Services: VFI's unique facility has the capacity to produce over 200 voice database sets (voice-sets) per year The production of a voice-set calls for the precise, phase linear, reverberation-free recording of a specially-trained performers articulating custom-scripted words and syllables to capture a full set of context-sensitive speech units (phonemes, diphones, and triphones) for a given language and dialect. 

VFI provides a comprehensive service for the production of voice-sets, including casting of talent and contract administration, training, preparing custom scripts and domain-specific manuals, and database management of voice-sets. After a procedure called tagging, a voice-set is converted to a voice-font, which is operated on by a voice synthesizer in real-time. The process is called concatenative synthesis, which is distinguished from the more elementary production of a pre-recorded prompt (PRP). VFI also operates world-class recording studios for the production of PRPs using the same performers under contract for TTS applications, thereby assuring seamless results and consistency in voicing for combined TTS/PRP applications.

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