This room is covered with soundproofing material, so the sound doesn't leak outside.

He honked the car horn to get my attention.

The Atlantic puffin is one of the most commonly seen birds in the North Atlantic.

Infrasound is a type of sound that is inaudible to the human ear.

Debuccalization refers to the phenomenon in phonetics where a specific sound is pronounced outside the oral cavity.

Kunminjōon is a book for teaching the correct pronunciation of Hangul.

Understanding the concept of 'Ha-line conversion sounds' is important in learning Japanese.