Masking noise

摘要

The invention relates to a method for masking noise as well as a control device and a masking system for carrying out said method. According to the invention, several zones in a room are independently exposed to soft sonic radiation in a basic state for masking purposes. The masking system thus comprises means for independently exposing zones in a room to sonic radiation. The masking system further comprises means which allows noise generated in a zone to be registered and preferably also be analyzed. The masking exposure to sonic radiation is reduced in the zone in which the external noise was generated and/or the masking exposure to sonic radiation is increased in the other zones in accordance with the measured or registered noise and, if applicable, the result of the analysis of the measured external noise. All in all, this allows the level of masking noise to be kept low compared with the prior art while very reliably achieving the desired masking effect.

主权项

1. A method for masking noise, comprising the steps of
independently directing masking noise (9, 10) to a plurality of different zones (2, 3)in a room (1) not presently affected by external noise, detecting external noise (11) in one of said zones (2, 3), and upon generation of external noise (11) in one but not all of the different zones (2, 3), reducing volume of the masking noise (9, 10) which is directed to this zone, and increasing volume of the masking noise (9, 10) which is directed to the at least one other zone in which no external noise (11) is generated up to a defined upper limit.