2024年12月23日 · Speech is human communication through spoken language. Although many animals possess voices of various types and inflectional capabilities, humans have learned to modulate their voices by articulating the laryngeal tones into audible oral speech. Learn more about speech in this article.

This configuration modifies an airstream to produce the sounds of speech. The main articulators are the tongue, the upper lip, the lower lip, the upper teeth, the upper gum ridge (alveolar ridge), the hard palate, the velum (soft palate), the uvula (free-hanging end of the soft palate), the pharyngeal wall, and the glottis (space between the ...

2025年2月14日 · Speech sounds have been described and classified both from an articulatory viewpoint, in terms of how they are produced, and from an acoustic viewpoint, by reference to the resulting sound waves (their frequencies, amplitudes, and so forth).

Speech, or talking, is the form of language that people can hear. (Writing is the other main form of language.) People use speech to communicate with others. From birth, babies make many different kinds of sounds. They learn to speak by copying the sounds that they hear around them. However, it takes years for a child to master the ability to ...

2025年2月21日 · Broca area, region of the brain that contains neurons involved in speech function. This area, located in the frontal part of the left hemisphere of the brain, was discovered in 1861 by French surgeon Paul Broca, who found that it serves a vital role in the generation of articulate speech.

2024年12月23日 · Speech - Voice Production, Acoustics, Physiology: The physical production of voice has been explained for a long time by the myoelastic or aerodynamic theory, as follows: when the vocal cords are brought into the closed position of phonation by the adducting muscles, a coordinated expiratory effort sets in. Air in the lungs, compressed by the ...

Speech - Larynx, Vocal Cords, Airflow: The morphology (structure) of the larynx is studied according to the cartilages, muscles, nerves, blood vessels, and membranes of which it is composed. The frame or skeleton of the larynx is composed of …

2025年2月12日 · In mammals the tongue aids in creating negative pressure within the oral cavity that enables sucking, and it is an important accessory organ in chewing and swallowing; it is also a major bearer of taste buds and, in humans, an aid to speech.

Speech is normally produced when air expelled from the lungs moves up the trachea and strikes the underside of the vocal cords, setting up vibrations as it passes through them; raw sound emerges from the larynx and passes to the upper cavities, which act as resonating chambers (or in some languages, such as Arabic, as shapers of sound), and ...

Wernicke area, region of the brain that contains motor neurons involved in the comprehension of speech. The Wernicke area is located in the posterior third of the upper temporal convolution of the left hemisphere of the brain. Thus, it lies close to the auditory cortex.