Miku's voice is collected using a process known as voice recording and editing. This involves multiple voice actresses recording their voices in a studio, then editing that audio to create the final voice data for Miku. The voice actresses used for Miku's voice have ranged over the years, with Fujita Saki being one of the most well-known.
Step 2: Building the Voice Library
Once the voice data is recorded and edited, it is used to create Miku's voice library, which is a database of sounds that Miku can use when synthesizing speech. This library includes a wide range of sounds, including individual phonemes, vowels, consonants, and even longer phrases and sentences. The library is organized in such a way that it can be used by the software to create a wide range of speech patterns and pronunciations.
Step 3: Character Design
Miku's character design is one of the most important aspects of her popularity, and it is carefully developed by a team of artists. The character design includes not only her visual appearance, such as her outfit, hairstyle, and accessories, but also her overall personality and mannerisms. Miku's design has evolved over the years, but her basic appearance remains the same: a young girl with long turquoise hair, turquoise eyes, and a cute and friendly expression.
Step 4: Software Development and Programming
The software that runs Hatsune Miku is developed by a team of programmers and sound engineers. This software is responsible for synthesizing Miku's speech and singing, as well as for creating her virtual persona. The software includes modules for pitch shifting, vocal effects, and other features that allow Miku to sound realistic and expressive.
Step 5: Marketing and Promotion
Hatsune Miku is a product of Crypton Future Media, and the company actively promotes her through a variety of channels, including social media, live events, and collaborations with other companies. Miku's popularity is also driven by her fans, who create fanart, videos, and music using her voice.
Overall, Hatsune Miku is the product of a combination of voice acting, character design, software development, and marketing. Her success can be attributed to the team of talented individuals behind her creation, as well as the passion of her fans.