CAJ | 학술논문

基于到达时间差的声源定位方法由时延估计和定位估计两部分构成，第一步的误差会带入到第二步从而造成累积误差，影响最终定位精度。针对这一问题，本文提出了一种改进的声源定位方法，采用累积互功率谱相位时延估计，并在此基础上结合球形插值算法进行定位。为了验证该算法在实际声场环境下的可行性和有效性，构建了三维麦克风阵列声源定位系统。实验结果表明，本文所提出的方法可以有效减少误差，提高最终定位精度。
기우도체시간차적성원정위방법유시연고계화정위고계량부분구성，제일보적오차회대입도제이보종이조성루적오차，영향최종정위정도。침대저일문제，본문제출료일충개진적성원정위방법，채용루적호공솔보상위시연고계，병재차기출상결합구형삽치산법진행정위。위료험증해산법재실제성장배경하적가행성화유효성，구건료삼유맥극풍진렬성원정위계통。실험결과표명，본문소제출적방법가이유효감소오차，제고최종정위정도。
Sound source localization based on the time difference of arrival (TDOA) consists of two parts-time delay estimation and location estimation. These two parts will cause cumulative errors and affect the final accuracy of localization. alming at this problem, this paper proposes an improved accumulated multi-frame cross power spectrum phase (CSP) time delay estimation algorithm, and on this basis, it improves the spherical interpolation (SI) algorithm to derive the source location. In order to verify the effectiveness of the algorithm, a three-dimensional sound source localization system is established under the practical conditions. This result of experiments shows that the proposed method can effectively reduce the errors and improve the positioning accuracy.