Subs generator by voice recognition in Web Speech API at YouTube
Open the src folder or the unzipped release file in Dev mode in the Chrome Extensions window.
On YouTube, you will see a start / stop button for voice recognition control.
Allow microphone input, select stereo mixer as input and play video.
Voice recognition for stereo mixes.
This is a limitation of the Web Speech API.
The Web Speech API has no way to connect to the Web Audio API.
Modify "en-US" in src/content.js.
example: ja-JP, en-GB, zh-CN, ko-KR