Display panel instructing pupil orator - has transmitter in front of instructor sending signals to panel at back of hall by showing e.g. louder, slower etc.

摘要

Immediate corrective action by instructor on pupil orator during speech is realised by using a display area with clear optical light signals. The pupil orator (4) observes the corrective information on a display panel (8) in the back and over the heads of the public (5) who are listening. The signals are transmitted by silent action the instructor (6). The signals are transmitted during the speech and serve as corrective information for the behaviour of the pupil orator. A transmitter (7) is used. The display unit (10a, 10b) is arranged within the display panel (8) and indicates e.g. louder, slower, head up etc.