副音声

1. Origins, structure, and basic meaning

• Structure: 副音声 is read as ふくおんせい and means “secondary audio” and “alternate audio track”.
• Basic usage: It denotes switching to a secondary audio track for commentary or another language.

2. Common pitfalls and similar expressions

• 副音声に切り替える / 副音声で選べる
  • Use 副音声に切り替える for changing tracks and 副音声で選べる for options available through that track.