{"id":15581,"date":"2025-11-03T07:09:26","date_gmt":"2025-11-03T07:09:26","guid":{"rendered":"https:\/\/sistc.com\/?p=15581"},"modified":"2025-11-03T07:09:28","modified_gmt":"2025-11-03T07:09:28","slug":"insight-mems-microphone-array-localization","status":"publish","type":"post","link":"https:\/\/sistc.com\/zh\/insight-mems-microphone-array-localization\/","title":{"rendered":"\u5229\u7528 MEMS \u9ea6\u514b\u98ce\u9635\u5217\u8fdb\u884c\u58f0\u6e90\u5b9a\u4f4d\uff1a\u539f\u7406\u4e0e\u5e94\u7528"},"content":{"rendered":"<p><strong>\u7531\u65e0\u9521\u7845\u6e90\u79d1\u6280\u6709\u9650\u516c\u53f8\u63d0\u4f9b<\/strong><br><a href=\"https:\/\/sistc.com\/zh\/product-category\/mems-microphone\/\">\u4e86\u89e3\u6211\u4eec\u7684 MEMS \u9ea6\u514b\u98ce<\/a> | <a href=\"https:\/\/sistc.com\/zh\/product-category\/sensor-module\/\">\u4e86\u89e3\u6211\u4eec\u7684\u4f20\u611f\u5668\u6a21\u5757<\/a><\/p><h3 class=\"wp-block-heading\"><strong>1.\u5bfc\u8a00<\/strong><\/h3><p>\u5728\u4e4b\u524d\u8ba8\u8bba\u8d85\u58f0\u6ce2\u6d4b\u8ddd\u7684\u57fa\u7840\u4e0a\uff0c\u672c\u6587\u5c06\u6df1\u5165\u63a2\u8ba8\u5982\u4f55\u5c06 MEMS \u9ea6\u514b\u98ce\u9635\u5217\u7528\u4e8e\u4ee5\u4e0b\u7528\u9014 <strong>\u58f0\u6e90\u5b9a\u4f4d<\/strong> - \u7684\u4e00\u9879\u91cd\u8981\u6280\u672f <strong>\u667a\u80fd\u8bbe\u5907\u3001\u673a\u5668\u4eba\u548c\u7a7a\u95f4\u97f3\u9891\u7cfb\u7edf<\/strong>.<\/p><p>\u914d\u5907\u9ad8\u6027\u80fd MEMS \u9ea6\u514b\u98ce\u9635\u5217\u540e\uff0c\u7cfb\u7edf\u53ef\u4ee5\u68c0\u6d4b\u5230 <strong>\u5230\u8fbe\u65b9\u5411<\/strong> \u6216 <strong>\u5230\u8fbe\u89d2\uff08AoA\uff09<\/strong> \u58f0\u6e90\uff0c\u5b9e\u73b0\u4ee5\u4e0b\u529f\u80fd <strong>\u8bed\u97f3\u8ddf\u8e2a<\/strong>, <strong>\u57fa\u4e8e\u58f0\u97f3\u7684\u4eba\u673a\u4ea4\u4e92<\/strong>\u4ee5\u53ca <strong>\u5ba4\u5185\u58f0\u5b66\u7ed8\u56fe<\/strong>.<\/p><h3 class=\"wp-block-heading\"><strong>2.\u4ec0\u4e48\u662f\u9ea6\u514b\u98ce\u9635\u5217\uff1f<\/strong><\/h3><p>\u5fae\u673a\u7535\u7cfb\u7edf <strong>\u9ea6\u514b\u98ce\u9635\u5217<\/strong> \u662f\u591a\u4e2a\u9ea6\u514b\u98ce\u7684\u7ed3\u6784\u6027\u6392\u5217\uff0c\u901a\u5e38\u4ee5 <strong>\u7ebf\u5f62<\/strong>, <strong>\u77e9\u5f62<\/strong>\u6216 <strong>\u516d\u89d2\u5f62<\/strong> \u6a21\u5f0f\u3002<br>\u8fd9\u4e9b\u9635\u5217\u53ef\u4ee5\u6355\u6349\u4ece\u4e0d\u540c\u65b9\u5411\u4f20\u6765\u7684\u58f0\u6ce2\uff0c\u5e76\u901a\u8fc7\u8ba1\u7b97\u6a21\u578b\u4f30\u7b97\u58f0\u97f3\u7684\u6765\u6e90\u3002<\/p><blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>\u4ece\u539f\u7406\u4e0a\u8bb2\uff0c\u9ea6\u514b\u98ce\u9635\u5217\u7684\u529f\u80fd\u4e0e\u65e0\u7ebf\u901a\u4fe1\u4e2d\u7684\u5929\u7ebf\u9635\u5217\u975e\u5e38\u76f8\u4f3c\uff0c\u4f46\u9488\u5bf9\u7684\u662f\u58f0\u6ce2\u3002<\/p><\/blockquote><p>\u4f8b\u5982 <strong>4 \u4e2a\u9ea6\u514b\u98ce\u7ebf\u6027\u9635\u5217<\/strong> \u53ef\u7528\u4e8e\u68c0\u6d4b\u58f0\u97f3\u5230\u8fbe\u7684\u65f6\u95f4\u5dee\uff08TDOA\uff09\uff0c\u5e76\u901a\u8fc7\u51e0\u4f55\u548c\u4fe1\u53f7\u5904\u7406\u8ba1\u7b97 AoA\u3002<\/p><figure class=\"wp-block-image aligncenter size-full is-resized\"><img fetchpriority=\"high\" decoding=\"async\" width=\"616\" height=\"493\" src=\"https:\/\/sistc.com\/wp-content\/uploads\/2025\/01\/\u5fae\u4fe1\u56fe\u7247_20250108141903.png\" alt=\"\" class=\"wp-image-14912\" style=\"width:374px;height:auto\" srcset=\"https:\/\/sistc.com\/wp-content\/uploads\/2025\/01\/\u5fae\u4fe1\u56fe\u7247_20250108141903.png 616w, https:\/\/sistc.com\/wp-content\/uploads\/2025\/01\/\u5fae\u4fe1\u56fe\u7247_20250108141903-300x240.png 300w, https:\/\/sistc.com\/wp-content\/uploads\/2025\/01\/\u5fae\u4fe1\u56fe\u7247_20250108141903-15x12.png 15w, https:\/\/sistc.com\/wp-content\/uploads\/2025\/01\/\u5fae\u4fe1\u56fe\u7247_20250108141903-600x480.png 600w\" sizes=\"(max-width: 616px) 100vw, 616px\" \/><figcaption class=\"wp-element-caption\">\u56fe .\u7ebf\u6027\u9ea6\u514b\u98ce\u9635\u5217<\/figcaption><\/figure><h3 class=\"wp-block-heading\"><strong>3.\u8fd1\u5730\u70b9\u5b9a\u4f4d\u7406\u8bba<\/strong><\/h3><p>\u5047\u8bbe\u58f0\u6ce2\u5230\u8fbe\u4e24\u4e2a\u95f4\u8ddd\u4e3a ddd \u7684\u9ea6\u514b\u98ce\uff0c\u58f0\u97f3\u5230\u8fbe\u65f6\u7684\u89d2\u5ea6\u4e3a \u03b8theta\u03b8\u3002<br>\u58f0\u97f3\u8def\u5f84\u7684\u4e0d\u540c\u5bfc\u81f4\u4e86 <strong>\u65f6\u95f4\u5ef6\u8fdf\uff08\u0394t\uff09<\/strong> \u7ed9\u51fa\uff1a\u0394t=dcos(\u03b8)c\\Delta t = \\frac{d \\cos(\\theta)}{c}\u0394t=cdcos(\u03b8)<\/p><p>\u5176\u4e2d\uff0cccc \u662f\u97f3\u901f\uff08~340 \u7c73\/\u79d2\uff09\u3002<br>\u901a\u8fc7\u6d4b\u91cf \u0394t\uff0c\u6211\u4eec\u53ef\u4ee5\u8ba1\u7b97\u51fa\u5230\u8fbe\u89d2\uff1a \u03b8=arccos(\u0394t\u22c5cd)\\theta = \\arccos\\left(\\frac{Delta t \\cdot c}{d}\\right)\u03b8=arccos(d\u0394t\u22c5c)<\/p><p>\u8fd9\u79cd\u8ba1\u7b97\u65b9\u6cd5\u53ef\u4ee5\u6269\u5c55\u5230 <strong>\u591a\u9ea6\u514b\u98ce\u9635\u5217<\/strong>\u4ece\u800c\u5927\u5927\u63d0\u9ad8\u4e86\u7a7a\u95f4\u5206\u8fa8\u7387\u3002<\/p><figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" width=\"648\" height=\"434\" src=\"https:\/\/sistc.com\/wp-content\/uploads\/2025\/11\/Figure.-Sound-Propagation-Model.png\" alt=\"\" class=\"wp-image-15582\" style=\"width:404px;height:auto\" srcset=\"https:\/\/sistc.com\/wp-content\/uploads\/2025\/11\/Figure.-Sound-Propagation-Model.png 648w, https:\/\/sistc.com\/wp-content\/uploads\/2025\/11\/Figure.-Sound-Propagation-Model-300x201.png 300w, https:\/\/sistc.com\/wp-content\/uploads\/2025\/11\/Figure.-Sound-Propagation-Model-18x12.png 18w, https:\/\/sistc.com\/wp-content\/uploads\/2025\/11\/Figure.-Sound-Propagation-Model-600x402.png 600w\" sizes=\"(max-width: 648px) 100vw, 648px\" \/><figcaption class=\"wp-element-caption\">\u56fe\u58f0\u97f3\u4f20\u64ad\u6a21\u578b<\/figcaption><\/figure><h3 class=\"wp-block-heading\"><strong>4.\u5b9e\u9645\u6267\u884c<\/strong><\/h3><p>\u5728 MATLAB \u6216\u5d4c\u5165\u5f0f\u7cfb\u7edf\u4e2d\uff0c\u4ea4\u53c9\u76f8\u5173\u51fd\u6570\u7528\u4e8e\u8ba1\u7b97 TDOA\uff1a<\/p><pre class=\"wp-block-code\"><code>[data, fs] = audioread('array_record.wav')\uff1b\nx = data(1, :); y = data(4, :)\uff1b\nd = 0.15; c = 340\uff1b\n\nX = fft(x); Y = fft(y)\uff1b\ncorrelation = ifft(X .* conj(Y))\uff1b\n[m, idx] = max(correlation)\uff1b\ndelta_t = (idx - 1 - length(correlation)\/2)\/ fs\uff1b\ntheta = acos(delta_t * c \/ d) \/ pi * 180\uff1b\n<\/code><\/pre><p>\u8fd9\u79cd\u7b80\u5355\u7684\u7b97\u6cd5\u53ef\u4ee5\u63d0\u4f9b\u7cbe\u786e\u7684\u65b9\u5411\u4f30\u7b97\uff0c\u8fd9\u662f <strong>\u6ce2\u675f\u6210\u5f62<\/strong>, <strong>\u964d\u566a<\/strong>\u4ee5\u53ca <strong>\u6e90\u5206\u79bb<\/strong>.<\/p><h3 class=\"wp-block-heading\"><strong>5.\u591a\u9635\u5217\u4fe1\u53f7\u6e90\u5b9a\u4f4d<\/strong><\/h3><p>\u901a\u8fc7\u5c06\u6765\u81ea <strong>\u4e24\u4e2a\u6216\u591a\u4e2a\u9ea6\u514b\u98ce\u9635\u5217<\/strong>\u8be5\u7cfb\u7edf\u53ef\u4ee5\u7cbe\u786e\u5b9a\u4f4d <strong>\u4e8c\u7ef4\u6216\u4e09\u7ef4\u4f4d\u7f6e<\/strong> \u58f0\u6e90\u3002<br>\u6bcf\u4e2a\u9635\u5217\u4f30\u7b97\u4e00\u4e2a\u65b9\u5411\uff0c\u5b83\u4eec\u4e4b\u95f4\u7684\u4ea4\u53c9\u70b9\u51b3\u5b9a\u4e86\u786e\u5207\u7684\u4f4d\u7f6e--\u8fd9\u4e00\u539f\u7406\u4e5f\u7528\u4e8e <strong>\u673a\u5668\u4eba\u542c\u89c9\u611f\u77e5<\/strong> \u4e0e <strong>\u4f1a\u8bae\u97f3\u9891\u7cfb\u7edf<\/strong>.<\/p><figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" width=\"671\" height=\"388\" src=\"https:\/\/sistc.com\/wp-content\/uploads\/2025\/11\/Figure.-Sound-Source-Localization-Model.png\" alt=\"\" class=\"wp-image-15583\" style=\"width:427px;height:auto\" srcset=\"https:\/\/sistc.com\/wp-content\/uploads\/2025\/11\/Figure.-Sound-Source-Localization-Model.png 671w, https:\/\/sistc.com\/wp-content\/uploads\/2025\/11\/Figure.-Sound-Source-Localization-Model-300x173.png 300w, https:\/\/sistc.com\/wp-content\/uploads\/2025\/11\/Figure.-Sound-Source-Localization-Model-18x10.png 18w, https:\/\/sistc.com\/wp-content\/uploads\/2025\/11\/Figure.-Sound-Source-Localization-Model-600x347.png 600w\" sizes=\"(max-width: 671px) 100vw, 671px\" \/><figcaption class=\"wp-element-caption\">\u56fe .\u58f0\u6e90\u5b9a\u4f4d\u6a21\u578b<\/figcaption><\/figure><h3 class=\"wp-block-heading\"><strong>6.\u57fa\u4e8e\u6307\u7eb9\u7684\u5b9a\u4f4d<\/strong><\/h3><p>\u9664\u4e86 AoA \u5916\uff0c\u53e6\u4e00\u9879\u65b0\u5174\u6280\u672f\u6d89\u53ca <strong>\u58f0\u5f3a\u6307\u7eb9\u8bc6\u522b<\/strong> - \u5206\u6790\u6574\u4e2a\u7a7a\u95f4\u591a\u4e2a\u9891\u7387\u7684\u4fe1\u53f7\u5f3a\u5ea6\u5206\u5e03\u3002<br>\u5728\u795e\u7ecf\u7f51\u7edc\u7684\u5e2e\u52a9\u4e0b\uff0c\u8fd9\u4e9b\u58f0\u97f3 \"\u6307\u7eb9 \"\u53ef\u4ee5\u5728\u9884\u5b9a\u4e49\u7684\u7f51\u683c\u5185\u5bf9\u8bbe\u5907\u4f4d\u7f6e\u8fdb\u884c\u5206\u7c7b\uff0c\u5728\u5ba4\u5185\u8fbe\u5230\u5398\u7c73\u7ea7\u7684\u7cbe\u786e\u5ea6\u3002<\/p><p>\u8fd9\u79cd\u6df7\u5408\u65b9\u6cd5\u7ed3\u5408\u4e86 <strong>\u58f0\u4f20\u64ad\u5efa\u6a21<\/strong> \u4e0e <strong>\u673a\u5668\u5b66\u4e60<\/strong>\u53ef\u5b9e\u73b0\u4ee5\u4e0b\u5e94\u7528<\/p><ul class=\"wp-block-list\"><li>\u5ba4\u5185\u8bbe\u5907\u5b9a\u4f4d<\/li>\n\n<li>\u57fa\u4e8e\u97f3\u9891\u7684\u624b\u52bf\u8bc6\u522b<\/li>\n\n<li>\u7a7a\u95f4\u58f0\u5b66\u5206\u6790<\/li><\/ul><h3 class=\"wp-block-heading\"><strong>7.\u5e94\u7528<\/strong><\/h3><ul class=\"wp-block-list\"><li><strong>\u667a\u80fd\u5bb6\u5c45\u8bbe\u5907<\/strong>:\u8bed\u97f3\u6307\u4ee4\u65b9\u5411\u8ddf\u8e2a<\/li>\n\n<li><strong>\u5de5\u4e1a\u58f0\u5b66<\/strong>:\u57fa\u4e8e\u58f0\u97f3\u7684\u6545\u969c\u68c0\u6d4b<\/li>\n\n<li><strong>\u673a\u5668\u4eba<\/strong>:\u73af\u5883\u58f0\u97f3\u5b9a\u4f4d<\/li>\n\n<li><strong>\u52a9\u542c\u5668<\/strong>:\u5b9a\u5411\u566a\u58f0\u6291\u5236<\/li>\n\n<li><strong>\u4f1a\u8bae\u7cfb\u7edf<\/strong>:\u626c\u58f0\u5668\u81ea\u52a8\u5bf9\u7126<\/li><\/ul><p>\u6709\u5173\u5546\u4e1a\u96c6\u6210\uff0c\u8bf7\u8bbf\u95ee<br>\ud83d\udd17 <a href=\"https:\/\/sistc.com\/zh\/product-category\/mems-microphone\/\">\u65e0\u9521\u7845\u6e90\u7684 MEMS \u9ea6\u514b\u98ce<\/a><br>\ud83d\udd17 <a href=\"https:\/\/sistc.com\/zh\/product-category\/sensor-module\/\">\u9ea6\u514b\u98ce\u9635\u5217\u4f20\u611f\u5668\u6a21\u5757<\/a><\/p><h3 class=\"wp-block-heading\"><strong>8.\u53c2\u8003\u6587\u732e<\/strong><\/h3><ul class=\"wp-block-list\"><li><a href=\"https:\/\/tech.huanqiu.com\/article\/4BEwWSpXJRx\">Cheng, L. et al\u3001 <em>\"\u5b9e\u73b0\u57fa\u4e8e\u5355\u4e00\u58f0\u6e90\u7684\u58f0\u5b66\u5b9a\u4f4d<\/em><\/a>IEEE infocom\uff0c2020\u3002<\/li>\n\n<li>Zhang, Y. et al\u3001<a href=\"https:\/\/ieeexplore.ieee.org\/document\/8861148\"> <em>\"Vernier\uff1a\u4f7f\u7528\u79fb\u52a8\u8bbe\u5907\u8fdb\u884c\u51c6\u786e\u5feb\u901f\u7684\u58f0\u5b66\u8fd0\u52a8\u8ddf\u8e2a\"<\/em>IEEE infocom\uff0c2018\u3002<\/a><\/li>\n\n<li>Xie, P. et al\u3001 <em>\"<a href=\"https:\/\/dl.acm.org\/doi\/10.1109\/INFOCOM.2018.8486365\">GeneWave\uff1a\u5546\u54c1\u79fb\u52a8\u8bbe\u5907\u4e0a\u7684\u5feb\u901f\u9a8c\u8bc1\u548c\u5bc6\u94a5\u534f\u8bae\"<\/a><\/em>IEEE ICCNP\uff0c2017\u3002<\/li><\/ul><p><\/p>","protected":false},"excerpt":{"rendered":"<p>\u4f5c\u8005\uff1a\u65e0\u9521\u7845\u6e90\u79d1\u6280\u6709\u9650\u516c\u53f8 \u6d4f\u89c8\u6211\u4eec\u7684 MEMS \u9ea6\u514b\u98ce \u6d4f\u89c8\u6211\u4eec\u7684\u4f20\u611f\u5668\u6a21\u5757 1.\u5f15\u8a00 \u57fa\u4e8e\u6211\u4eec\u4e4b\u524d\u5173\u4e8e\u8d85\u58f0\u6ce2\u6d4b\u8ddd\u7684\u8ba8\u8bba\uff0c\u672c\u6587\u5c06\u6df1\u5165\u63a2\u8ba8\u5982\u4f55 [...]<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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