He likes to study ancient pronunciations.

His pronunciation is characterized by approximants.

In phonetics, a sibilant is used to represent a specific sound.

A glottal stop, or 'せいもんはれつおん' in Japanese, represents a sound like the 'uh-oh' in English.

Pharyngeal sounds are difficult to pronounce.

The glottal stop plays an important role in linguistics.

The African wild dog, also known as the Lycaon, is a very rare species.

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

There is no message from him at all.

He is interested in the Song pronunciation.