

A myriad number of voicebanks have been developed by independent users. They are also called "voicebanks" (more common in English-speaking areas) and "(voice) libraries" in Japan. Voices made for the UTAU program are officially called "UTAU" as well, though they are colloquially known as "UTAUloids", a reference to VOCALOID. It comes with AQUEST's voice synthesizer " AquesTalk" for synthesizing the voice samples of the default voicebank, Utane Uta (also nicknamed Defoko ( Defoko meaning 'Default Girl' in Japanese)) on UTAU's initial launch, after which the generator deletes itself.

UTAU is able to use WAV files provided by the user, so that a singing voice can be synthesized by introducing song lyrics and melody. UTAU was originally created to assist this process using concatenative synthesis. UTAU ( 歌う), meaning 'to sing' in Japanese, has its origin in the activity of "Jinriki Bōkaroido" ( 人力ボーカロイド, Manual Vocaloid), where people edit an existing vocal track, extract phonemes, adjust pitch, and reassemble them to create a Vocaloid-esque singing voice. In March 2008, Ameya/Ayame released UTAU, a free, advanced support tool shareware software that was free-to-download from its main website. This program is similar to the VOCALOID software, with the difference being it is shareware instead of under a third party licensing. UTAU is a Japanese singing synthesizer application created by Ameya/Ayame ( 飴屋/菖蒲). Japanese and English (and other languages via patch files)
