Device for measuring, indicating and controlling sound pressure (or sound levels) in an environment.

摘要

The device for measuring, indicating and controlling ambient sound pressure levels comprises a probe (8) connected to a sound level meter (2), the output signal from which is proportional to sound pressure picked up by the probe; the signal from the meter is compared with a given threshold, and if found to be higher, causes a control signal to be generated that triggers the operation of indicator lights or alarms (6), and/or of a limiter (4) by which sound pressure in the environment is attenuated automatically. The device is intended for use in surroundings such as discotheques, building sites or factory premises etc., where sound pressure levels attributable to noise generated within the environment can prove a source of annoyance, or even of harm, to persons occupying the area.