Articulatory phonetics is a study about the production of speech sounds.

Acoustic phonetics is the study of the physical properties of speech.

He is known as a person with learning.

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

This audio is very clear.

He is an expert in orthoepy, teaching pronunciation.

By learning phonetic symbols, accurate pronunciation becomes possible.

The structure of the speech organs greatly affects the pronunciation of language.

You can also listen to this movie in English with the secondary audio.

That sound is very beautiful.