位相 いそう変調 へんちょう記録 きろくじゃなかったです
isō henchōkirokujanakattadesu

Noun
Desu Copula

The polite, past negative form of 位相変調記録

1. Wasn't phase modulation recording.; Wasn't a phase modulation record.

Past/Perfective
Negative
Polite
Casual Register
Computing