Electronic noise detectors

Abstract

Abstract This electronic noise detector is an instructional device for classroom teachers to use in achieving academic excellence in educating students. Academic excellence is, among other things, dependent upon good discipline in the classroom and excessive noise in a classroom is disruptive of good discipline. This invention provides the classroom teacher with a means of immediately controlling the noise level in any classroom with any arrangement of the students. It further provides a means for instructing students to accept responsibility for maintaining a level of noise to the classroom which is conducive to achieving academic excellence. Operation of the device is simple. The teacher places it any place in the classroom that may be desired and turns it on. The device is then in a monitoring mode. The teacher sets an adjustable gain control and predetermines a level of noise which will be unacceptable. The device monitors the classroom without further intervention of the teacher. When the noise level in the classroom exceeds the preset level for a continuous five seconds, the device enters its response mode and a buzzer sounds for approximately four seconds. The five second toleration period allows for unexpected noises such as sneezes, a book falling, etc., thus making the device a monitress of the average noise level in a classroom. While the device is in its response mode, it automatically ceases to monitor the noise in the classroom, thus it cannot activate itself. As soon as the response mode ends, the device automatically reverts to a monitoring mode. What is unique about this device is: (a) it has a sensitivity range which makes it usable in an ordinary classroom, (b) it can endure a preset level of sound for at least five seconds without entering the response mode, (c) it automatically interrupts the monitoring mode and cannot self-activate the circuit, (d) it automatically returns to a monitoring mode upon completion of its response mode, (e) it can be used in any environment where students are being educated regardless of external power supplies, arrangements of students, or enlisting participation of the students in any particular fashion.

Inventors

• 👤 Raymond L. Kirby

Bibliographic Details