{"id":15398,"date":"2025-06-29T09:01:24","date_gmt":"2025-06-29T09:01:24","guid":{"rendered":"https:\/\/sistc.com\/?p=15398"},"modified":"2025-06-29T09:01:27","modified_gmt":"2025-06-29T09:01:27","slug":"blog-microphone-beamforming-fundamentals","status":"publish","type":"post","link":"https:\/\/sistc.com\/zh\/blog-microphone-beamforming-fundamentals\/","title":{"rendered":"\u9ea6\u514b\u98ce\u6ce2\u675f\u6210\u5f62\u6280\u672f\u57fa\u7840"},"content":{"rendered":"<p class=\"wp-block-paragraph\">\u6240\u6709 MEMS \u9ea6\u514b\u98ce\u672c\u8eab\u90fd <strong>\u5168\u65b9\u4f4d<\/strong>\u8fd9\u610f\u5473\u7740\u5b83\u4eec\u5bf9\u6765\u81ea\u5404\u4e2a\u65b9\u5411\u7684\u58f0\u97f3\u7684\u53cd\u5e94\u76f8\u540c\u3002\u4f46\u662f\uff0c\u5f53\u591a\u4e2a\u9ea6\u514b\u98ce\u6392\u5217\u6210\u4e00\u4e2a <strong>\u77e9\u9635<\/strong>\u56e0\u6b64\uff0c\u53ef\u4ee5\u5851\u9020\u65b9\u5411\u7075\u654f\u5ea6\uff0c\u5373\u6240\u8c13\u7684 <strong>\u6ce2\u675f\u6210\u5f62<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6ce2\u675f\u6210\u5f62\u4f7f\u9ea6\u514b\u98ce\u9635\u5217\u80fd\u591f\u5bf9\u6765\u81ea\u67d0\u4e9b\u65b9\u5411\u7684\u58f0\u97f3\u505a\u51fa\u66f4\u5f3a\u7684\u54cd\u5e94\uff0c\u540c\u65f6\u6291\u5236\u5176\u4ed6\u65b9\u5411\u7684\u58f0\u97f3\u3002\u672c\u6307\u5357\u4ecb\u7ecd <strong>\u57fa\u672c\u539f\u7406\u548c\u9635\u5217\u7c7b\u578b<\/strong> \u7528\u4e8e\u6ce2\u675f\u6210\u5f62\uff0c\u91cd\u70b9\u662f <strong>\u9f50\u5c04\u548c\u7aef\u5c04\u9635\u5217<\/strong>\u5305\u62ec\u7a7a\u95f4\u548c\u9891\u7387\u54cd\u5e94\u3001\u8bbe\u8ba1\u6743\u8861\u548c\u7075\u654f\u5ea6\u8003\u8651\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u9ea6\u514b\u98ce\u6307\u5411\u6027\u548c\u6781\u6027\u6a21\u5f0f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u65b9\u5411\u6027<\/strong> \u662f\u6307\u4f20\u58f0\u5668\u7684\u8f93\u51fa\u7535\u5e73\u5982\u4f55\u968f\u58f0\u6e90\u5728\u6d88\u58f0\u7a7a\u95f4\u4e2d\u7684\u4f4d\u7f6e\u800c\u53d8\u5316\u3002\u5982\u56fe\u6240\u793a <strong>\u56fe 1<\/strong>ADI \u7684\u6240\u6709 MEMS \u9ea6\u514b\u98ce\u90fd\u662f\u5168\u5411\u7684\uff0c\u5e76\u63d0\u4f9b\u5706\u6781\u54cd\u5e94\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u8f74\u4e0a<\/strong>:0\u00b0\uff0c\u62fe\u97f3\u65b9\u5411<\/li>\n\n\n\n<li><strong>\u79bb\u8f74<\/strong>\uff1a90\u00b0\u3001180\u00b0\u3001270\u00b0-\u4fa7\u9762\u548c\u80cc\u9762<\/li>\n\n\n\n<li>\u672c\u6307\u5357\u4e2d\u7684\u6240\u6709\u6781\u5750\u6807\u56fe\u5747\u4e3a <strong>\u5f52\u4e00\u5316\u4e3a 0\u00b0 \u54cd\u5e94<\/strong><\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img fetchpriority=\"high\" decoding=\"async\" width=\"322\" height=\"297\" src=\"https:\/\/sistc.com\/wp-content\/uploads\/2025\/06\/d5eb47ca36f3afaf4f12ffbb87f506dc.jpeg\" alt=\"\" class=\"wp-image-15399\" style=\"width:331px;height:auto\" srcset=\"https:\/\/sistc.com\/wp-content\/uploads\/2025\/06\/d5eb47ca36f3afaf4f12ffbb87f506dc.jpeg 322w, https:\/\/sistc.com\/wp-content\/uploads\/2025\/06\/d5eb47ca36f3afaf4f12ffbb87f506dc-300x277.jpeg 300w, https:\/\/sistc.com\/wp-content\/uploads\/2025\/06\/d5eb47ca36f3afaf4f12ffbb87f506dc-13x12.jpeg 13w\" sizes=\"(max-width: 322px) 100vw, 322px\" \/><figcaption class=\"wp-element-caption\"><strong>\u56fe 1<\/strong><\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u9891\u7387\u4e0e\u6ce2\u957f\u7684\u5173\u7cfb<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u58f0\u97f3\u4e4b\u95f4\u7684\u5173\u7cfb <strong>\u901f\u5ea6<\/strong>, <strong>\u9891\u7387<\/strong>\u4ee5\u53ca <strong>\u6ce2\u957f<\/strong> \u662f<br><strong>c = f \u00d7 \u03bb<\/strong>\u5728 20\u00b0C \u7684\u7a7a\u6c14\u4e2d\uff0cc \u2248 343 \u7c73\/\u79d2\u3002<br>\u53c2\u89c1 <strong>\u56fe 1<\/strong> \u9891\u7387-\u6ce2\u957f\u53c2\u8003\u56fe\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5bbd\u8fb9\u9ea6\u514b\u98ce\u9635\u5217<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5fae\u673a\u7535\u7cfb\u7edf <strong>\u5bbd\u8fb9\u9635\u5217<\/strong> \u5c06\u9ea6\u514b\u98ce\u6392\u6210\u4e00\u6392 <strong>\u5782\u76f4<\/strong> \u58f0\u6ce2\u65b9\u5411\uff08\u89c1 <strong>\u56fe 2<\/strong>).\u5f53\u6240\u9700\u7684\u58f0\u6e90\u4f4d\u4e8e\u9ea6\u514b\u98ce\u9635\u5217\u6b63\u524d\u65b9\u65f6\uff0c\u8fd9\u79cd\u8bbe\u8ba1\u6700\u4e3a\u7406\u60f3\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u9ea6\u514b\u98ce\u95f4\u8ddd\uff1a <strong>d<\/strong><\/li>\n\n\n\n<li>\u4fe1\u53f7\u5904\u7406 <strong>\u7b80\u5355\u6c42\u548c<\/strong><\/li>\n\n\n\n<li>\u4f18\u52bf\uff1a\u5f3a\u5927\u7684\u4fa7\u53f6\u6291\u5236\u529f\u80fd\uff0890\u00b0\u3001270\uff09<\/li>\n\n\n\n<li>\u5c40\u9650\u6027\uff1a\u524d\u540e\u65e0\u5dee\u522b\uff080\u00b0 \u4e0e 180\u00b0\uff09\u3002<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" width=\"288\" height=\"240\" src=\"https:\/\/sistc.com\/wp-content\/uploads\/2025\/06\/44bddc1a14948d9e3040923822e981a3.jpeg\" alt=\"\" class=\"wp-image-15400\" style=\"width:249px;height:auto\" srcset=\"https:\/\/sistc.com\/wp-content\/uploads\/2025\/06\/44bddc1a14948d9e3040923822e981a3.jpeg 288w, https:\/\/sistc.com\/wp-content\/uploads\/2025\/06\/44bddc1a14948d9e3040923822e981a3-14x12.jpeg 14w\" sizes=\"(max-width: 288px) 100vw, 288px\" \/><figcaption class=\"wp-element-caption\"><strong>\u56fe 2<\/strong><\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u53cc\u9ea6\u514b\u98ce\u5bbd\u8fb9\u9635\u5217\u4e2d <strong>75 \u6beb\u7c73\u95f4\u8ddd<\/strong>\uff0c\u7834\u574f\u6027\u5e72\u6270\u53d1\u751f\u5728 ~2.3 kHz \u5904\uff0c\u6b64\u65f6 <strong>\u534a\u6ce2\u957f\u7b49\u4e8e\u8bdd\u7b52\u95f4\u8ddd<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u9891\u7387\u66f4\u9ad8\u3001 <strong>\u7a7a\u95f4\u6df7\u53e0<\/strong> \u53d1\u751f\uff0c\u5728\u4e0d\u9700\u8981\u7684\u89d2\u5ea6\u5f15\u5165\u65b0\u7684\u7a7a\u70b9\uff08\u89c1 <strong>\u56fe 3<\/strong>).\u589e\u52a0\u8bdd\u7b52\u6570\u91cf\u53ef\u6539\u5584\u4fa7\u5411\u6291\u5236\uff08\u89c1 <strong>\u56fe 4-5<\/strong>)\uff0c\u4f46\u964d\u4f4e\u4e86\u4ea7\u751f\u6df7\u53e0\u7684\u9891\u7387\u9608\u503c\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" width=\"330\" height=\"292\" src=\"https:\/\/sistc.com\/wp-content\/uploads\/2025\/06\/48ec6f78ff7a494d149f576bba44fb39.jpeg\" alt=\"\" class=\"wp-image-15401\" style=\"width:263px;height:auto\" srcset=\"https:\/\/sistc.com\/wp-content\/uploads\/2025\/06\/48ec6f78ff7a494d149f576bba44fb39.jpeg 330w, https:\/\/sistc.com\/wp-content\/uploads\/2025\/06\/48ec6f78ff7a494d149f576bba44fb39-300x265.jpeg 300w, https:\/\/sistc.com\/wp-content\/uploads\/2025\/06\/48ec6f78ff7a494d149f576bba44fb39-14x12.jpeg 14w\" sizes=\"(max-width: 330px) 100vw, 330px\" \/><figcaption class=\"wp-element-caption\"><strong>\u56fe 3<\/strong><\/figcaption><\/figure>\n\n\n\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\"><div class=\"wp-block-group__inner-container\">\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"314\" height=\"242\" src=\"https:\/\/sistc.com\/wp-content\/uploads\/2025\/06\/7b7b1d60be4699f51f3fd2d3c78d1e90.jpeg\" alt=\"\" class=\"wp-image-15402\" style=\"width:234px;height:auto\" srcset=\"https:\/\/sistc.com\/wp-content\/uploads\/2025\/06\/7b7b1d60be4699f51f3fd2d3c78d1e90.jpeg 314w, https:\/\/sistc.com\/wp-content\/uploads\/2025\/06\/7b7b1d60be4699f51f3fd2d3c78d1e90-300x231.jpeg 300w, https:\/\/sistc.com\/wp-content\/uploads\/2025\/06\/7b7b1d60be4699f51f3fd2d3c78d1e90-16x12.jpeg 16w\" sizes=\"(max-width: 314px) 100vw, 314px\" \/><figcaption class=\"wp-element-caption\"><strong>\u56fe 4<\/strong><\/figcaption><\/figure>\n<\/div><\/div>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"337\" height=\"292\" src=\"https:\/\/sistc.com\/wp-content\/uploads\/2025\/06\/110650d73b82763a58618e370fd49d63.jpeg\" alt=\"\" class=\"wp-image-15403\" style=\"width:239px;height:auto\" srcset=\"https:\/\/sistc.com\/wp-content\/uploads\/2025\/06\/110650d73b82763a58618e370fd49d63.jpeg 337w, https:\/\/sistc.com\/wp-content\/uploads\/2025\/06\/110650d73b82763a58618e370fd49d63-300x260.jpeg 300w, https:\/\/sistc.com\/wp-content\/uploads\/2025\/06\/110650d73b82763a58618e370fd49d63-14x12.jpeg 14w\" sizes=\"(max-width: 337px) 100vw, 337px\" \/><figcaption class=\"wp-element-caption\"><strong>\u56fe 5<\/strong><\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u5bbd\u9891\u54cd\u5e94<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f53\u4fe1\u53f7\u76f8\u5e72\u76f8\u52a0\u65f6\uff0c\u8f74\u4e0a\u54cd\u5e94\u4fdd\u6301\u5e73\u5766\u3002\u79bb\u8f74\u8870\u51cf\u968f\u9891\u7387\u548c\u8bdd\u7b52\u95f4\u8ddd\u7684\u53d8\u5316\u800c\u53d8\u5316\uff08\u89c1 <strong>\u56fe 6<\/strong>).\u8bbe\u8ba1\u6743\u8861\uff1a <strong>\u66f4\u5bbd\u7684\u95f4\u8ddd\u6539\u5584\u4e86\u4f4e\u9891\u65b9\u5411\u6027\uff0c\u4f46\u589e\u52a0\u4e86\u6df7\u53e0\u98ce\u9669<\/strong>.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"382\" height=\"296\" src=\"https:\/\/sistc.com\/wp-content\/uploads\/2025\/06\/ba9eb19364d31e06e3bb82f52222d1b3.jpeg\" alt=\"\" class=\"wp-image-15404\" style=\"width:372px;height:auto\" srcset=\"https:\/\/sistc.com\/wp-content\/uploads\/2025\/06\/ba9eb19364d31e06e3bb82f52222d1b3.jpeg 382w, https:\/\/sistc.com\/wp-content\/uploads\/2025\/06\/ba9eb19364d31e06e3bb82f52222d1b3-300x232.jpeg 300w, https:\/\/sistc.com\/wp-content\/uploads\/2025\/06\/ba9eb19364d31e06e3bb82f52222d1b3-15x12.jpeg 15w\" sizes=\"(max-width: 382px) 100vw, 382px\" \/><figcaption class=\"wp-element-caption\"><strong>\u56fe 6<\/strong><\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u7aef\u5c04\uff08\u8f74\u5411\uff09\u9635\u5217\u548c\u5dee\u5206\u6ce2\u675f\u5f62\u6210\u5668<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u4e2a <strong>\u7aef\u706b\u9635\u5217<\/strong> \u5c06\u9ea6\u514b\u98ce\u5bf9\u51c6\u4e0e\u6240\u9700\u58f0\u97f3\u8def\u5f84\u76f8\u540c\u7684\u65b9\u5411\uff08\u89c1 <strong>\u56fe 7<\/strong>).)\u3002 <strong>\u5dee\u52a8\u914d\u7f6e<\/strong> \u5c06\u540e\u7f6e\u8bdd\u7b52\u7684\u5ef6\u8fdf\u4fe1\u53f7\u51cf\u53bb\u524d\u7f6e\u8bdd\u7b52\u7684\u5ef6\u8fdf\u4fe1\u53f7\uff0c\u4ece\u800c\u4ea7\u751f <strong>\u5fc3\u5f62\u3001\u8d85\u5fc3\u5f62\u6216\u8d85\u5fc3\u5f62<\/strong> \u6a21\u5f0f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"242\" height=\"255\" src=\"https:\/\/sistc.com\/wp-content\/uploads\/2025\/06\/dba4e2ff684c791f3ae8e29610950a65.jpeg\" alt=\"\" class=\"wp-image-15405\" style=\"width:178px;height:auto\" srcset=\"https:\/\/sistc.com\/wp-content\/uploads\/2025\/06\/dba4e2ff684c791f3ae8e29610950a65.jpeg 242w, https:\/\/sistc.com\/wp-content\/uploads\/2025\/06\/dba4e2ff684c791f3ae8e29610950a65-11x12.jpeg 11w\" sizes=\"(max-width: 242px) 100vw, 242px\" \/><figcaption class=\"wp-element-caption\"><strong>\u56fe 7<\/strong><\/figcaption><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5173\u952e\u8bbe\u8ba1\u53d8\u91cf\uff1a\n<ul class=\"wp-block-list\">\n<li><strong>\u9ea6\u514b\u98ce\u95f4\u8ddd<\/strong><\/li>\n\n\n\n<li><strong>\u5ef6\u8fdf\u65f6\u95f4<\/strong> (\u57fa\u4e8e\u91c7\u6837\u7387\uff09<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u5bf9\u4e8e fs = 48 kHz\uff0c\u5355\u91c7\u6837\u5ef6\u8fdf \u2248 <strong>21 \u5fae\u79d2<\/strong>\u76f8\u5f53\u4e8e\u7a7a\u6c14\u4e2d\u7684 ~7 \u6beb\u7c73<\/li>\n\n\n\n<li>\u5f53\u5ef6\u8fdf\u4e0e\u7269\u7406\u5230\u8fbe\u65f6\u95f4\u504f\u79fb\u76f8\u5339\u914d\u65f6\uff0c\u5c31\u80fd\u5b9e\u73b0\u5fc3\u5f62\u54cd\u5e94\uff08\u89c1 <strong>\u56fe 9<\/strong>)<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u9891\u7387\u54cd\u5e94\u548c\u65e0\u6548<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5dee\u5206\u9635\u5217\u663e\u793a <strong>\u9ad8\u901a\u884c\u4e3a<\/strong><\/li>\n\n\n\n<li>\u8f93\u51fa\u4ee5 6 \u5206\u8d1d\/\u500d\u9891\u7a0b\u589e\u52a0\uff0c\u76f4\u81f3 <strong>\u7a7a\u9891<\/strong> (\u534a\u6ce2\u957f = \u95f4\u8ddd\uff09<\/li>\n\n\n\n<li>\u5728\u8f83\u9ad8\u9891\u7387\u4e0b\u4f1a\u51fa\u73b0\u6df7\u53e0\u548c\u989d\u5916\u7684\u7a7a\u70b9\uff08\u89c1 <strong>\u56fe 10-12<\/strong>)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">SISTC\u7684 <strong>\u8bdd\u7b52\u95f4\u8ddd<\/strong> \u4e0e <strong>\u5ef6\u8fdf\u65f6\u95f4<\/strong> \u786e\u5b9a\u7a7a\u4f4d\u7f6e\u548c\u54cd\u5e94\u5f62\u72b6\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u592a\u77ed\u2192\u5f31\u7a7a<\/li>\n\n\n\n<li>\u592a\u957f \u2192 \u5206\u5272\u540e\u7a7a\u683c\uff08\u89c1 <strong>\u56fe 11<\/strong>)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u5e94\u7528 <strong>\u5747\u8861\uff08EQ\uff09<\/strong> \u5efa\u8bae\u5c06\u901a\u5e26\u53d8\u5e73\u3002\u9009\u62e9\u5408\u9002\u7684\u7a7a\u9891\u81f3\u5173\u91cd\u8981--\u592a\u4f4e\u4f1a\u5e72\u6270\u8bed\u97f3\uff0c\u592a\u9ad8\u4f1a\u524a\u5f31\u4f4e\u9891\u7075\u654f\u5ea6\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u9ad8\u9636 Endfire \u9635\u5217<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u901a\u8fc7\u6dfb\u52a0\u66f4\u591a\u5bf9\u9f50\u9ea6\u514b\u98ce\uff0c\u53ef\u4ee5\u6784\u5efa\u66f4\u9ad8\u9636\u7684\u6ce2\u675f\u6210\u5f62\u5668\uff08\u89c1 <strong>\u56fe 13<\/strong>).A <strong>\u4e8c\u9636\u7aef\u5c04\u9635\u5217<\/strong> (3 \u4e2a\u9ea6\u514b\u98ce\uff09\u63d0\u4f9b\u66f4\u5f3a\u7684\u4fa7\u53f6\u6291\u5236\uff0812 dB\uff09\u548c\u4e00\u9636\u6291\u5236\uff086 dB\uff09\uff0c\u5982\u56fe\u6240\u793a <strong>\u56fe 14<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u66f4\u591a\u7684\u5143\u4ef6\u53ef\u4ee5\u63d0\u9ad8\u6027\u80fd\uff0c\u4f46\u9700\u8981\u66f4\u957f\u7684\u7269\u7406\u9635\u5217\uff0c\u8fd9\u53ef\u80fd\u4e0e\u5de5\u4e1a\u8bbe\u8ba1\u7684\u9650\u5236\u76f8\u51b2\u7a81\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u9ea6\u514b\u98ce\u5339\u914d<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u9ad8\u6027\u80fd\u6ce2\u675f\u6210\u5f62\u9700\u6c42 <strong>\u9ea6\u514b\u98ce\u7075\u654f\u5ea6\u548c\u9891\u7387\u54cd\u5e94\u7d27\u5bc6\u5339\u914d<\/strong>.\u5dee\u5f02\u4f1a\u964d\u4f4e\u7a7a\u6027\u80fd\u548c\u65b9\u5411\u6027\u3002\u4f8b\u5982\uff0cADI \u516c\u53f8\u7684 MEMS \u9ea6\u514b\u98ce\u5c31\u4e3a\u6b64\u8fdb\u884c\u4e86\u4e25\u683c\u5339\u914d\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u7cfb\u7edf\u4fe1\u566a\u6bd4\u548c\u6ce2\u675f\u6210\u5f62\u7684\u5f71\u54cd<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u6ce2\u675f\u6210\u5f62\u5f71\u54cd <strong>\u7cfb\u7edf\u4fe1\u566a\u6bd4 (SNR)<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u5bbd\u8fb9\u9635\u5217<\/strong> \u901a\u8fc7\u5bf9\u4fe1\u53f7\u6c42\u548c\u6765\u63d0\u9ad8\u8f74\u4e0a\u4fe1\u566a\u6bd4\uff1a\n<ul class=\"wp-block-list\">\n<li>\u4fe1\u53f7\u589e\u52a0 +6 \u5206\u8d1d<\/li>\n\n\n\n<li>\u566a\u97f3\u589e\u52a0 +3 \u5206\u8d1d\uff08\u4e0d\u76f8\u5173\u566a\u97f3\uff09<\/li>\n\n\n\n<li><strong>\u51c0\u4fe1\u566a\u6bd4\u63d0\u9ad8+3 dB<\/strong><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u79bb\u8f74\u4fe1\u566a\u6bd4\u56e0\u4fe1\u53f7\u7535\u5e73\u4e0b\u964d\u800c\u964d\u4f4e<\/li>\n\n\n\n<li><strong>\u5dee\u5206\u9635\u5217<\/strong> \u6839\u636e\u9891\u7387\u548c\u8bdd\u7b52\u95f4\u8ddd\u7684\u4e0d\u540c\uff0c\u4fe1\u566a\u6bd4\u8868\u73b0\u590d\u6742<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u9635\u5217\u51e0\u4f55\u5f62\u72b6\u548c\u5e03\u7f6e<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u9ea6\u514b\u98ce <strong>\u4e2d\u5fc3\u5bf9\u4e2d\u5fc3\u95f4\u8ddd<\/strong> \u8fd9\u5e76\u4e0d\u662f\u552f\u4e00\u7684\u8003\u8651\u56e0\u7d20--PCB \u539a\u5ea6\u548c\u9ea6\u514b\u98ce\u9ad8\u5ea6\u4f1a\u5f71\u54cd\u771f\u6b63\u7684\u58f0\u5b66\u4e2d\u5fc3\u4f4d\u7f6e\u3002\u4f8b\u5982\uff0cADI MEMS \u9ea6\u514b\u98ce\u7684\u58f0\u5b66\u4e2d\u5fc3\u4f4d\u4e8e <strong>\u7aef\u53e3\u4e0a\u65b9 0.57 \u6beb\u7c73<\/strong>.\u5982\u679c\u9ea6\u514b\u98ce\u5b89\u88c5\u5728\u4e0d\u540c\u9ad8\u5ea6\uff0c\u5219\u5fc5\u987b\u8003\u8651\u5230\u8fd9\u4e00\u70b9\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u9ad8\u7ea7\u6ce2\u675f\u6210\u5f62<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u672c\u6307\u5357\u4fa7\u91cd\u4e8e\u57fa\u672c\u6ce2\u675f\u6210\u5f62\u3002\u9ad8\u7ea7\u7b97\u6cd5\u5982<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u5149\u675f\u8f6c\u5411<\/strong><\/li>\n\n\n\n<li><strong>\u6765\u6e90\u8ffd\u8e2a<\/strong><\/li>\n\n\n\n<li><strong>\u95f4\u8ddd\u4e0d\u5747\u5300<\/strong><\/li>\n\n\n\n<li><strong>\u57fa\u4e8e FFT \u7684\u81ea\u9002\u5e94\u5904\u7406<\/strong><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">......\u53ef\u4ee5\u7528\u6700\u5c11\u7684\u786c\u4ef6\u63d0\u4f9b\u5f3a\u5927\u7684\u6027\u80fd\u3002\u4f7f\u7528\u9ad8\u9636\u6ce2\u675f\u6210\u5f62\u5668 <strong>\u975e\u5747\u5300\u95f4\u8ddd<\/strong> \u80fd\u8fbe\u5230 <strong>\u66f4\u5bbd\u7684\u9891\u7387\u8303\u56f4<\/strong> \u4e0e <strong>\u4f4e\u566a\u97f3<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u6458\u8981\uff1aBroadside \u4e0e Endfire \u9635\u5217\u5bf9\u6bd4<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u7279\u70b9<\/th><th>\u5bbd\u8fb9\u9635\u5217<\/th><th>Endfire \u9635\u5217<\/th><\/tr><\/thead><tbody><tr><td>\u4e3b\u8981\u65b9\u5411<\/td><td>\u5782\u76f4<\/td><td>\u4e0e\u58f0\u9053\u4e00\u81f4<\/td><\/tr><tr><td>\u7a7a\u4f4d\u7f6e<\/td><td>\u4fa7\u9762\uff0890\u00b0\u3001270\uff09<\/td><td>\u540e\u90e8\uff08180\uff09<\/td><\/tr><tr><td>\u6700\u4f73\u4f7f\u7528\u6848\u4f8b<\/td><td>\u58c1\u6302\u5f0f\u626c\u58f0\u5668<\/td><td>\u667a\u80fd\u52a9\u7406\u3001\u8033\u673a<\/td><\/tr><tr><td>\u9891\u7387\u884c\u4e3a<\/td><td>\u5e73\u5766\u3001\u5bbd\u5e26\u5bbd<\/td><td>\u9700\u8981\u5e26\u5747\u8861\u5668\u7684\u9ad8\u901a<\/td><\/tr><tr><td>\u5b9e\u65bd\u60c5\u51b5<\/td><td>\u7b80\u5355\u6c42\u548c<\/td><td>\u5ef6\u8fdf\u548c\u51cf\u6cd5\u903b\u8f91<\/td><\/tr><tr><td>\u6570\u7ec4\u957f\u5ea6<\/td><td>\u4e2d\u5ea6<\/td><td>\u66f4\u957f\uff08\u7528\u4e8e\u9ad8\u9636\uff09<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u7ed3\u8bba<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u6ce2\u675f\u6210\u5f62\u662f\u4e00\u79cd\u5f3a\u5927\u7684\u6280\u672f\uff0c\u53ef\u6539\u5584 <strong>\u6307\u5411\u6027\u3001\u566a\u58f0\u6291\u5236\u548c\u8bed\u97f3\u6e05\u6670\u5ea6<\/strong> \u5728 MEMS \u9ea6\u514b\u98ce\u9635\u5217\u4e2d\u3002\u901a\u8fc7\u9009\u62e9\u6b63\u786e\u7684\u914d\u7f6e<strong>\u9f50\u5c04<\/strong>-\u901a\u8fc7\u4f7f\u7528\u9002\u5f53\u7684\u5ef6\u8fdf\u548c\u95f4\u8ddd\u6765\u5339\u914d\u9ea6\u514b\u98ce\u5143\u4ef6\uff0c\u5de5\u7a0b\u5e08\u53ef\u4ee5\u663e\u8457\u63d0\u9ad8\u667a\u80fd\u626c\u58f0\u5668\u3001\u8bed\u97f3\u52a9\u624b\u548c\u79fb\u52a8\u8bbe\u5907\u7684\u7cfb\u7edf\u97f3\u9891\u6027\u80fd\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udcd8 \u60f3\u63a2\u7d22\u7528\u4e8e\u6ce2\u675f\u6210\u5f62\u9635\u5217\u7684 MEMS \u9ea6\u514b\u98ce\uff1f<br>\ud83d\udc49 <a class=\"\" href=\"https:\/\/sistc.com\/zh\/product-category\/mems-microphone\/\">https:\/\/sistc.com\/product-category\/mems-microphone\/<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6709\u8bbe\u8ba1\u65b9\u9762\u7684\u95ee\u9898\uff1f <a href=\"https:\/\/sistc.com\/zh\/contact\/\">\u8054\u7cfb\u6211\u4eec\u7684\u5de5\u7a0b\u5e08<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udccc \u9ea6\u514b\u98ce\u5339\u914d<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u9ad8\u6027\u80fd\u6ce2\u675f\u6210\u5f62\u9700\u6c42 <strong>\u9ea6\u514b\u98ce\u7075\u654f\u5ea6\u548c\u9891\u7387\u54cd\u5e94\u7d27\u5bc6\u5339\u914d<\/strong>.\u5373\u4f7f\u662f\u5fae\u5c0f\u7684\u4e0d\u5339\u914d\u4e5f\u4f1a\u5927\u5927\u964d\u4f4e\u7a7a\u6027\u80fd\u548c\u65b9\u5411\u7cbe\u5ea6\u3002\u4f9b\u53c2\u8003\u3001 <strong>\u6a21\u62df\u5668\u4ef6\u516c\u53f8\u63d0\u4f9b\u8be6\u7ec6\u7684\u89c1\u89e3<\/strong> \u5b9e\u9645\u7cfb\u7edf\u4e2d\u7684 MEMS \u9ea6\u514b\u98ce\u5339\u914d\uff1a<br>\ud83d\udd17 <a>\u6a21\u62df\u5668\u4ef6\u516c\u53f8\uff1a\u9009\u62e9\u548c\u5339\u914d MEMS \u9ea6\u514b\u98ce<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udccc \u5148\u8fdb\u6ce2\u675f\u6210\u5f62<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u867d\u7136\u672c\u6307\u5357\u4fa7\u91cd\u4e8e\u56fa\u5b9a\u9635\u5217\u6ce2\u675f\u6210\u5f62\uff0c\u4f46\u66f4\u5148\u8fdb\u7684\u6280\u672f\uff0c\u4f8b\u5982.....\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u81ea\u9002\u5e94\u5149\u675f\u8f6c\u5411<\/strong><\/li>\n\n\n\n<li><strong>\u7a7a\u95f4\u8fc7\u6ee4<\/strong><\/li>\n\n\n\n<li><strong>\u5b9e\u65f6\u6e90\u5b9a\u4f4d<\/strong><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">......\u53ef\u663e\u8457\u589e\u5f3a\u566a\u58f0\u6216\u52a8\u6001\u73af\u5883\u4e2d\u7684\u65b9\u5411\u6027\u548c\u4fe1\u566a\u6bd4\u3002\u8fd9\u4e9b\u6280\u672f\u8d8a\u6765\u8d8a\u591a\u5730\u5e94\u7528\u4e8e <strong>\u4eba\u5de5\u667a\u80fd\u8fb9\u7f18\u5904\u7406\u548c\u667a\u80fd\u97f3\u9891<\/strong>\u6b63\u5982\u4ee5\u4e0b\u6587\u7ae0\u6240\u63a2\u8ba8\u7684\u90a3\u6837\uff1a<br>\ud83d\udd17 <a class=\"\" href=\"https:\/\/developer.nvidia.com\/blog\/deep-learning-audio-beamforming\/\" target=\"_blank\" rel=\"noopener\">\u82f1\u4f1f\u8fbe\u2122\uff08NVIDIA\u00ae\uff09\u5f00\u53d1\u4eba\u5458\uff1a\u9488\u5bf9\u97f3\u9891\u6ce2\u675f\u6210\u5f62\u7684\u6df1\u5ea6\u5b66\u4e60<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7cfb\u7edf\u4fe1\u566a\u6bd4\u548c\u6ce2\u675f\u6210\u5f62\u7684\u5f71\u54cd<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u6ce2\u675f\u6210\u5f62\u76f4\u63a5\u5f71\u54cd <strong>\u7cfb\u7edf\u7ea7\u4fe1\u566a\u6bd4 (SNR)<\/strong>.\u591a\u9879\u7814\u7a76\u8868\u660e\uff0c\u901a\u8fc7\u6ce2\u675f\u6210\u5f62\u63d0\u9ad8\u4fe1\u566a\u6bd4\u4e0e <strong>\u63d0\u9ad8\u4e86\u5173\u952e\u8bcd\u68c0\u6d4b\u7684\u51c6\u786e\u6027<\/strong> \u5728\u8bed\u97f3\u63a7\u5236\u7cfb\u7edf\u4e2d\u7684\u5e94\u7528\u3002\u6df1\u5165\u4e86\u89e3\u5176\u80cc\u540e\u7684\u6570\u5b66\u539f\u7406\uff1a<br>\ud83d\udd17 <a class=\"\" href=\"https:\/\/ieeexplore.ieee.org\/document\/1382080\" target=\"_blank\" rel=\"noopener\">IEEE Xplore\uff1a\u7528\u4e8e\u964d\u566a\u7684\u9ea6\u514b\u98ce\u9635\u5217\u4fe1\u53f7\u5904\u7406<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>","protected":false},"excerpt":{"rendered":"<p>All MEMS microphones are inherently omnidirectional, meaning they respond equally to sound from all directions. However, when multiple microphones are arranged into an array, it is possible to shape directional [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"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":"","ast-disable-related-posts":"","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 center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"_joinchat":[],"footnotes":""},"categories":[42,1],"tags":[],"class_list":["post-15398","post","type-post","status-publish","format-standard","hentry","category-industry-news","category-company-news"],"_links":{"self":[{"href":"https:\/\/sistc.com\/zh\/wp-json\/wp\/v2\/posts\/15398","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sistc.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sistc.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sistc.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/sistc.com\/zh\/wp-json\/wp\/v2\/comments?post=15398"}],"version-history":[{"count":0,"href":"https:\/\/sistc.com\/zh\/wp-json\/wp\/v2\/posts\/15398\/revisions"}],"wp:attachment":[{"href":"https:\/\/sistc.com\/zh\/wp-json\/wp\/v2\/media?parent=15398"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sistc.com\/zh\/wp-json\/wp\/v2\/categories?post=15398"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sistc.com\/zh\/wp-json\/wp\/v2\/tags?post=15398"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}