Sound source localizing method
A sound source localization, sound source technology, applied in the system of localization, determination of direction or offset, direction finders using ultrasonic/sonic/infrasonic waves, etc., can solve the problems of low efficiency, wrong estimation results, low accuracy, etc. To achieve the effect of simple use and wide application
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[0070] A specific embodiment of the present invention, a sound source localization method, the specific steps are as follows:
[0071] 1) Considering different application backgrounds, the transient aliasing model and the convolutional aliasing model of the sound source signal are established. The actual application situation is considered in the modeling, that is, the external noise component is included;
[0072] When a narrowband signal s(t) with a bandwidth of W enters a receiving array from the far field, the array has M receiving array elements and each array element is arranged at equal intervals. When a signal arrives at another array element from one array element, it will experience a time delay τ, which depends on the signal's direction of arrival (DOA) angle θ and the array element spacing Δ (wavelength unit). If τ is much smaller than the reciprocal of W (ie Wτ□1), the phase shift between two adjacent array elements At this time, the M-dimensional array observat...
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