DESIGN OF SPATIAL ADAPTIVE PASSIVE SOUND SOURCE LOCATION SYSTEM
The traditional sound source location technology is divided into two steps:time de-lay estimation and spatial location.This paper integrates and improves several classical time delay estimation and spatial location methods to improve the real-time performance and anti-interference ability of the system,innovatively proposes and implements a location system that adaptively adjusts the shape of the microphone array according to the change of sound source position,and effectively reduces the location error without reducing the real-time per-formance.This paper evaluates the system performance from three aspects:positioning accu-racy,real-time performance,and anti-interference ability.Experiments have shown that un-der ideal conditions,the uncertainty of the sound positioning system is within 4cm;Has good resistance to noise and reverberation,with an uncertainty of no more than 6cm in harsh envi-ronments;A single localization takes 0.5 seconds and can locate moving or pulsed sound sources with strong real-time performance,making it suitable for most application scenarios.
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