This word is affected by the sound shift.

He is an expert in musicology.

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 doing a special exercise to strengthen his sternohyoid muscle.

The mylohyoid muscle plays an important role in opening the mouth.

The infrahyoid muscle is a part of the neck muscles, and it has the role of pulling the hyoid bone downward.

The suprahyoid muscle is one of the muscles that help in mastication and swallowing.

The geniohyoid muscle is a muscle located under the jaw.