Noise identifying apparatus and noise identifying method using the same

摘要

Provided is a noise identifying apparatus and noise identifying method, allowing automatic identification of whether or not a measured noise has been influenced by a non-object noise, using a simple system.;Apparatus includes a sound detection unit, including plural microphones and/or particle velocity sensors; a sound source direction specifying unit, specifying an instantaneous direction of a sound source for each unit time, on the result of detection by the sound detection unit; a variation degree calculating unit, calculating a variation degree of the plural instantaneous directions specified by the sound source direction specifying unit for a prescribed period set longer than the unit time; and a non-object noise determining unit, determining the existence/absence of a non-object noise having influenced the measurement of an object noise taken as an object to be measured, coming from a noise source, on the variation degree calculated by the variation degree calculating unit.

主权项

1. A noise identifying apparatus, comprising:
a sound detection means, including a plurality of microphones and/or particle velocity sensors; a sound source direction specifying means, specifying an instantaneous direction of a sound source for each unit time on the basis of the result of detection by the sound detection means; a variation degree calculating means, calculating a variation degree of a plurality of said instantaneous directions, having been specified by said sound source direction specifying means for a prescribed period, being set longer than said unit time; and a non-object noise determining means, determining, on the basis of said variation degree, having been calculated by the variation degree calculating means, the existence/absence of a non-object noise, having influenced the measurement of an object noise, coming from a noise source taken as an object to be measured.