The rate of the voice, or the speed at which words are spoken, is controlled by the articulatory process of voice production. Articulation refers to the physical movements of the speech organs, such as the lips, tongue, and jaw, that shape the sounds of speech.
The rate of speech can be affected by a variety of factors, including the speaker’s emotions, the context of the communication, and the linguistic complexity of the message. However, the articulatory process is primarily responsible for controlling the rate of speech.
During articulation, the speaker’s brain sends signals to the speech organs, instructing them to produce the sounds of speech. These signals control the speed and timing of the movements of the speech organs, which in turn determines the rate of speech. For example, if the brain sends signals that instruct the tongue to move quickly, the speaker will produce speech at a faster rate.
The rate of speech can also be influenced by other aspects of voice production, such as breathing and phonation. Breathing provides the necessary airflow for speech production, and the rate and depth of breathing can affect the rate of speech. Phonation refers to the vibration of the vocal cords that produces sound, and changes in the tension or timing of the vocal cords can also affect the rate of speech.
In conclusion, the rate of speech is primarily controlled by the articulatory process of voice production. The physical movements of the speech organs, as directed by signals from the brain, determine the speed at which words are spoken. Other aspects of voice production, such as breathing and phonation, can also influence the rate of speech.