Yamaha VOCALOID4

Yamaha VOCALOID4 is a singing voice synthesizer software developed by Yamaha Corporation. It is used to create singing voices by inputting lyrics and melody. It has been used by many popular artists such as Hatsune Miku, IA, and GUMI.

Yamaha VOCALOID4 works by using a vocal library of recorded samples of real singers. These samples are then combined and manipulated to create a synthesized voice. The software also includes a variety of features such as pitch and formant manipulation, vibrato control, and a variety of effects. It also includes a library of preset phrases and words that can be used to create a more natural sounding vocal.