MP3のAudioデータのFFT&WaveデータをTextAlive_API用のJSON形式でダウンロードできるサイトです。
This is a site to download FFT&Wave data of MP3 Audio data in JSON format for TextAlive_API.
https://misora.main.jp/ea4azmyb/createjson/
Download and install Node.js on your computer (https://nodejs.org/en/download/).
Then, open VSCODE, drag the project folder to it. Open VSCODE terminal and install dependencies (you need to do this only in the first time)
npm install
Run this command in your terminal to open a local server at localhost:8080
npm run dev
Three.js