Classroom noise alarm

Details Classroom noise alarm Classroom noise alarm

1981-01-05

1982-08-24

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

179 1N, 307117, 340540, G08B 2100

Patent

active

043463746

ABSTRACT:
A noise alarm for use in a school classroom to detect sound exceeding a predetermined level and which actuates a two-tone audio alarm and a light-emitting diode to notify both the instructor and students when excessive noise has been detected. The noise alarm aids the instructor in preventing excessive classroom noise which can and does disrupt and destroy a given learning situation. A sensitivity control is provided to allow the instructor to determine the noise level at which the alarm will automatically respond, and time delay means are provided so the audio alarm will not sound unless excessive noise occurs twice and within a predetermined time frame. The noise alarm also provides a digital LED readout displaying how many times the audio alarm has been triggered, thus providing the instructor with a temporary record which can be used to reinforce acceptable classroom noise levels. Other controls are also provided, allowing the instructor to "erase" the count displayed or to place the noise alarm in a "hold" mode so that the alarm is temporarily disabled without disturbing any count which is currently displayed by the LED readout.

REFERENCES:
patent: 2590460 (1952-03-01), Rackey et al.
patent: 2969530 (1961-01-01), Duncan
patent: 3158850 (1964-11-01), Poznanski
patent: 3304368 (1967-02-01), Ford et al.
patent: 4099168 (1978-07-01), Kedjierski et al.

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