A voiceless consonant is a sound that does not involve the vibration of the vocal cords.

He is troubled by the stress that accompanies his job.

His pronunciation has many voiceless consonants.

He damaged his vocal cords and temporarily lost his ability to speak.

This machine has intense oscillations, so please use it with caution.

This machine oscillates at a constant frequency.

In this old document, some consonants represent different sounds than those of today.

His speech sound is very attractive.

Due to the influence of the Southern Oscillation, this winter may be warm.

Consonant letters are often contrasted with vowel letters.