总  结

The air stream comes from the lung and the sound source is the larynx which contains the vocal cords. Vocal cords can control the air stream and modify the states of glottis. Speech sounds are produced with the air stream pushed out of the glottis called egressive sounds, while the speech sounds are produced with the air sucked are called ingressive sounds. Cavities include pharyngeal cavity, oral cavity and nasal cavity

反  思

From what we learned, have you gotten a deeper understanding of the sound-producing mechanism?