A voicebank is a database of phoneme samples recorded from a human singer. The synthesizer engine (Vocaloid, UTAU, etc.) concatenates and processes these samples based on a MIDI score and lyrics.

Commercial voicebanks require expensive studio recording, professional voice talent, and licensing. Free voicebanks often rely on:

However, don't close this tab. The world of synthetic vocals has exploded. Today, there are dozens of alternatives that work in the same way—or even better—than Vocaloid. This article will guide you through every option, from free "Lite" voicebanks to open-source engines that cost absolutely nothing.