After having acquired the ability to suddenly change the tone of their voice, they practice imitations of the voices of the aged, of children, dialects, and feminine tones, and, with a set of mechanical puppets, are ready to appear as ventriloquists.

By contraction of the pharyngeal and laryngeal muscles they also imitate tones from a distance.

Some give their performance with little labial movement, but close inspection of the ordinary performer of this class shows visible movements of his lips.

The true ventriloquist pretends only to speak from the belly and needs no mechanical assistance.
The wonderful powers of mimicry displayed by expert ventriloquists are marvelous; they not only imitate individuals and animals, but do not hesitate to imitate a conglomeration of familiar sounds and noises in such a manner as to deceive their listeners into believing that they hear the discussions of an assemblage of people.

The following description of an imitation of a domestic riot by a Chinese ventriloquist is given by the author of "The Chinaman at Home" and well illustrates the extent of their abilities: "The ventriloquist was seated behind a screen, where there were only a chair, a table, a fan, and a ruler.