What does 'Resonation' refer to in the context of speech communication?

Resonation in the context of speech communication specifically refers to the amplification of sound through the vocal tract. When we speak, sound produced by the vocal cords travels through the various cavities of the vocal tract, such as the throat, mouth, and nasal passages. These cavities act as resonating chambers, enhancing and modifying the sound quality. This process contributes to the richness and fullness of the voice, as well as to the distinctiveness of speech sounds. Understanding this concept is essential for appreciating how vocal quality is produced and how it can be affected by physiological factors, such as the shape and size of one's vocal tract.