He is an expert in orthoepy, teaching pronunciation.

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

He honked the car horn to get my attention.

He is a foreigner, so he finds it difficult to learn about Japanese culture.

The Grand Duchy of Luxembourg is a small country in Europe.

You should not be deceived by the deceptive advertising of this product.

My friend is working in the United Arab Emirates.

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.