自動 じどうボリューム認識 にんしき機能 きのうだったら
jidōboryūmuninshiki kinōdattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of 自動ボリューム認識機能

1. If automatic volume recognition function…; Were automatic volume recognition function…

Tara Conditional
Computing