The vocal cords are located within the larynx (voice box) in the throat. Positioned horizontally, they stretch across the glottis at the top of the trachea. These folds vibrate to produce sound How do humans speak? How It Works Vibrating tongue piercing In English, consonant sounds are divided into voiced and voiceless. A voiced consonant sound is produced when your vocal cords vibrate while you say the sound. You can check this by