The sound was so quiet that I could hardly hear it.

The timbre of his voice is very beautiful.

He is an expert in orthoepy, teaching pronunciation.

Phonetics is a part of linguistics that studies the physical, physiological, and psychological aspects of sounds.

He pointed at the location on the map.

Part of this movie is based on actual events.

The process of this project was very complicated.

By learning Pinyin, you can accurately understand the pronunciation of Chinese.

Velar sounds occur when the back of the tongue contacts the soft palate.

A lingual sound is a sound that uses the tongue when pronouncing.