| 摘要 |
PURPOSE: A radio education system is provided to maximize educational effect by bidirectional communication between teacher and student and guaranteeing the liberal action of the student. CONSTITUTION: The radio education system comprises: the first radio frequency channel transmitting audio signals in one direction toward at least one student; the second radio frequency channel transmitting the voice of a teacher to the at least one student; the third radio frequency channel transmitting the voice of the at least one student to the teacher; and a control channel for transmitting in bidirectional the information for controlling the opening of the second and third radio frequency channels.
|
