可聴 かちょう周波 しゅうは すうじゃありませんでした
kachōshūhasūjārimasendeshita

Noun
Desu Copula

The polite, past negative form of 可聴周波数

1. Was not audible frequency.; Was not within the audible range.

Past/Perfective
Negative
Polite
Terminal Form
Computing