A dorsal sound is a sound that is pronounced by the back of the tongue approaching or touching the palate or pharynx.

The glottal stop plays an important role in linguistics.

The theory of phonetic shift is an important part of linguistics.

This word is affected by the sound shift.

He is an expert in orthoepy, teaching pronunciation.

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.

This ancient proverb, 'know the other side and yourself, and you will not be in danger in a hundred battles', teaches us the importance of understanding ourselves and others.

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