Hatsune Miku (Japanese name: Hatsune Hatsune Hatsune) is a sound source library developed by CRYPTON FUTURE MEDIA based on Yamaha's VOCALOID series of speech synthesis programs, and the sound source data is sampled from Japanese seiyuu Fujita. It can refer to the image of a girl with onion hair on the cover of a package, or it can refer to a "pop singer" who is active in animation.

20 10 Hatsune Miku released six versions of Hatsune Hatsune. Since then, the English version has been released together with VOCALOID3.

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Hatsune Miku is the first virtual idol in the world to hold a concert with holographic projection technology.

The 3D holographic transparent screen used in the concert is a transparent projection screen using holographic technology. This kind of projection screen has the characteristics of holographic image, which only displays the image from a certain angle and ignores the light from other angles. Even in the bright environment, it can display very bright and clear images.