DEVICE AND METHOD FOR MEASURING SOUND LEVELS AND DIRECTION OR LOCALISATION OF SOUND SOURCES.

摘要

The invention relates to a directional sound measurement device, comprising at least two pressure gradient microphones having the same directional characteristics, being co-located in a different orientation and a processor adapted to divide the time in time windows, to determine the mean squared value of the output signals of the microphones in each time window, to determine the root of the mean squared values in each time window, execute goniometric combinations to the mean squared values of root mean squared values in each time window for obtaining the sound level and the direction of a dominant sound source in each time window. The invention also relates to a combination of at least two of such devices and a central unit to receive the signals transmitted by the transmitters and to calculate the location of at least one dominant sound source based on cross bearing and a corresponding method.