YOU SAID:

There was a sound I didn't recognize.

INTO JAPANESE

見覚えのない音がしました。

BACK INTO ENGLISH

I heard an unfamiliar sound.

INTO JAPANESE

なじみのない音がした。

BACK INTO ENGLISH

There was an unfamiliar sound.

INTO JAPANESE

なじみのない音がした。

BACK INTO ENGLISH

There was an unfamiliar sound.