ちょう てい周波 しゅうは おんじゃなかったです
chōteishūhaonjanakattadesu

Noun
Desu Copula

The polite, past negative form of 超低周波音

1. Wasn't an extremely low-frequency sound.; Wasn't a super low-frequency sound.

Past/Perfective
Negative
Polite
Casual Register