| 主权项 |
1. A method for detecting the presence of a noise signal within a noise measurement field, where the noise measurement field includes a noise signal emanating from a noise source at a specific known spatial location within the noise measurement field, and where the noise signal is mixed with extraneous noise existing within the noise measurement field, the method comprising:
configuring a plurality of acoustic transducers arranged in first and second arrays to monitor the noise measurement field at a plurality of spatially separated locations, and where the acoustic transducers of each of said first and second arrays are configured such that a distance from each one of said acoustic transducers of each of said first and second arrays to said specific known spatial location of said noise source is known or assumed, so as to be able to detect the presence of noise at least at one specific, predetermined spatial location within the noise measurement field; sampling outputs from said acoustic transducers to generate time series data for each of said first and second arrays; and processing said time series data to identify whether said noise signal is present, said processing said time series data including analyzing said time series data and obtaining an averaged time varying signal for each of said first and second arrays, said averaged time varying signal from each of said first and second arrays having a characteristic that said noise signal emanating from said specific known spatial location within said noise measurement field is reinforced, and further such that said extraneous noise is substantially reduced or eliminated therefrom. |
