Environmental noise monitoring

摘要: This invention concerns environmental noise monitoring, and more particularly a system method for monitoring. The monitoring comprises three or sound level transducers arranged apart from each other in an environment containing one sources. Each transducer is to pick up sounds arriving all directions transduce the into electrical signals. direction measuring equipment includes signal samplers connected respective receive signals representing sample A computer processor further provided perform cross correlation calculations generate function pair of sampled identifies local maxima functions, estimates angle arrival associated with maximum pressure maximum, uses angles functions identify source particular that source, then additional sources different levels those Noise may be accumulated, displayed saved reference.