{"id":15948,"date":"2026-02-09T07:35:38","date_gmt":"2026-02-09T07:35:38","guid":{"rendered":"https:\/\/sistc.com\/?p=15948"},"modified":"2026-06-16T09:27:59","modified_gmt":"2026-06-16T09:27:59","slug":"blog-far-field-omnidirectional-microphone-design","status":"publish","type":"post","link":"https:\/\/sistc.com\/zh\/blog-far-field-omnidirectional-microphone-design\/","title":{"rendered":"\u8fdc\u573a\u5168\u5411\u9ea6\u514b\u98ce\u8bbe\u8ba1\uff1a\u5173\u952e\u6280\u672f\u548c\u5b9e\u9645\u8003\u8651\u56e0\u7d20"},"content":{"rendered":"<p class=\"wp-block-paragraph\">\u8fdc\u573a\u8bed\u97f3\u4ea4\u4e92\u5df2\u6210\u4e3a\u73b0\u4ee3\u4f1a\u8bae\u7cfb\u7edf\u3001\u667a\u80fd\u8bbe\u5907\u3001\u673a\u5668\u4eba\u548c\u4eba\u5de5\u667a\u80fd\u7ec8\u7aef\u7684\u6838\u5fc3\u8981\u6c42\u3002.<br>\u5728\u4e0d\u540c\u7684\u58f0\u5b66\u89e3\u51b3\u65b9\u6848\u4e2d <strong>\u8fdc\u573a\u5168\u5411\u9ea6\u514b\u98ce\u9635\u5217<\/strong> \u662f\u5728\u590d\u6742\u548c\u5608\u6742\u73af\u5883\u4e2d\u6e05\u6670\u6355\u6349\u4eba\u7c7b\u8bed\u97f3\u7684\u4e00\u79cd\u5b9e\u7528\u4e14\u53ef\u6269\u5c55\u7684\u65b9\u6cd5\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u672c\u6587\u63a2\u8ba8\u4e86 <strong>\u4e3b\u8981\u8bbe\u8ba1\u539f\u5219\u3001\u6280\u672f\u6311\u6218\u548c\u7cfb\u7edf\u7ea7\u8003\u8651\u56e0\u7d20<\/strong> \u8fdc\u573a\u5168\u65b9\u5411\u9ea6\u514b\u98ce\u8bbe\u8ba1\u7684\u80cc\u540e--\u4eba\u5de5\u667a\u80fd\u9a71\u52a8\u7684\u9ea6\u514b\u98ce\u9635\u5217\u5982\u4f55\u91cd\u65b0\u5b9a\u4e49\u8bed\u97f3\u62fe\u53d6\u6027\u80fd\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4ec0\u4e48\u662f\u8fdc\u573a\u5168\u5411\u9ea6\u514b\u98ce\u7cfb\u7edf\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fdc\u573a\u5168\u65b9\u5411\u9ea6\u514b\u98ce\u7cfb\u7edf\u7684\u8bbe\u8ba1\u76ee\u7684\u662f\u6355\u6349\u8fdc\u8ddd\u79bb\u7684\u6e05\u6670\u8bed\u97f3--\u901a\u5e38\u662f <strong>\u8ddd\u79bb\u58f0\u6e90\u51e0\u7c73\u8fdc<\/strong>-\u540c\u65f6\u4fdd\u6301 <strong>\u6240\u6709\u65b9\u5411\u7684\u7075\u654f\u5ea6\u4e00\u81f4<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0e\u4f9d\u8d56\u7269\u7406\u65b9\u5411\u7684\u5b9a\u5411\u9ea6\u514b\u98ce\u4e0d\u540c\uff0c\u5168\u5411\u9ea6\u514b\u98ce\u9635\u5217\u901a\u8fc7\u4ee5\u4e0b\u65b9\u5f0f\u5b9e\u73b0\u7a7a\u95f4\u611f\u77e5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u591a\u4e2a MEMS \u9ea6\u514b\u98ce<\/li>\n\n\n\n<li>\u9635\u5217\u51e0\u4f55\u5f62\u72b6\u548c\u95f4\u8ddd<\/li>\n\n\n\n<li>\u6570\u5b57\u4fe1\u53f7\u5904\u7406\uff08DSP\uff09<\/li>\n\n\n\n<li>\u57fa\u4e8e\u4eba\u5de5\u667a\u80fd\u7684\u8bed\u97f3\u589e\u5f3a\u7b97\u6cd5<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u79cd\u7ed3\u6784\u4f7f\u7cfb\u7edf\u80fd\u591f\u68c0\u6d4b\u548c\u589e\u5f3a\u8bed\u97f3\uff0c\u800c\u4e0d\u53d7\u8bf4\u8bdd\u8005\u4f4d\u7f6e\u7684\u5f71\u54cd\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u8fdc\u573a\u8bed\u97f3\u62fe\u53d6\u7684\u6838\u5fc3\u6311\u6218<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u8bbe\u8ba1\u53ef\u9760\u7684\u8fdc\u573a\u5168\u5411\u4f20\u58f0\u5668\u9635\u5217\u9700\u8981\u514b\u670d\u51e0\u4e2a\u58f0\u5b66\u96be\u9898\uff1a<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1.\u73af\u5883\u566a\u58f0<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u73b0\u5b9e\u4e16\u754c\u7684\u73af\u5883\u4e2d\uff0c\u8bed\u97f3\u901a\u5e38\u4f1a\u4e0e\u4e0d\u53ef\u9884\u6d4b\u7684\u566a\u97f3\u6df7\u5408\u5728\u4e00\u8d77\uff0c\u4f8b\u5982.....\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7a7a\u8c03<\/li>\n\n\n\n<li>\u529e\u516c\u5ba4\u804a\u5929<\/li>\n\n\n\n<li>\u673a\u68b0\u632f\u52a8<\/li>\n\n\n\n<li>\u5ba4\u5916\u80cc\u666f\u566a\u97f3<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f20\u7edf\u7684\u8fc7\u6ee4\u65b9\u6cd5\u5728\u8fd9\u4e9b\u60c5\u51b5\u4e0b\u96be\u4ee5\u594f\u6548\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2.\u6df7\u54cd\u548c\u56de\u58f0<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5899\u58c1\u548c\u7bb1\u4f53\u7684\u58f0\u97f3\u53cd\u5c04\u4f1a\u4ea7\u751f\u6df7\u54cd\uff0c\u800c\u626c\u58f0\u5668\u4ea7\u751f\u7684\u56de\u58f0\u4f1a\u4e25\u91cd\u964d\u4f4e\u53cc\u5411\u901a\u4fe1\u7684\u8bed\u97f3\u8d28\u91cf\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3.\u8ddd\u79bb\u8870\u51cf<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u8bed\u97f3\u80fd\u91cf\u4f1a\u968f\u7740\u8ddd\u79bb\u7684\u589e\u52a0\u800c\u8fc5\u901f\u964d\u4f4e\uff0c\u56e0\u6b64\u8fdc\u573a\u8bed\u97f3\u62fe\u53d6\u5bf9\u4fe1\u566a\u6bd4 (SNR) \u7279\u522b\u654f\u611f\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e3a\u4ec0\u4e48\u9996\u9009\u5168\u5411\u9ea6\u514b\u98ce\u9635\u5217<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u8fdc\u573a\u5e94\u7528\u4e2d\uff0c\u5355\u4e2a\u9ea6\u514b\u98ce--\u5373\u4f7f\u662f\u9ad8\u8d28\u91cf\u9ea6\u514b\u98ce--\u4e5f\u4f1a\u53d7\u5230\u5f88\u5927\u9650\u5236\u3002.<br>\u4e00\u4e2a <strong>\u5168\u5411\u9ea6\u514b\u98ce\u9635\u5217<\/strong> \u63d0\u4f9b\u4e86\u82e5\u5e72\u4f18\u52bf\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7a7a\u95f4\u5206\u96c6\u6539\u8fdb\u4e86\u8bed\u97f3\u68c0\u6d4b<\/li>\n\n\n\n<li>\u5197\u4f59\u58f0\u5b66\u4fe1\u606f\u589e\u5f3a\u9c81\u68d2\u6027<\/li>\n\n\n\n<li>\u7075\u6d3b\u7684\u6ce2\u675f\u6210\u5f62\u548c\u540e\u5904\u7406<\/li>\n\n\n\n<li>\u65e0\u8bba\u626c\u58f0\u5668\u671d\u54ea\u4e2a\u65b9\u5411\uff0c\u90fd\u80fd\u83b7\u5f97\u4e00\u81f4\u7684\u62fe\u97f3\u6548\u679c<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u4e0e\u4eba\u5de5\u667a\u80fd\u7b97\u6cd5\u76f8\u7ed3\u5408\uff0c\u5168\u5411\u9635\u5217\u5728\u590d\u6742\u7684\u58f0\u5b66\u573a\u666f\u4e2d\u5c31\u80fd\u80dc\u8fc7\u4f20\u7edf\u7684\u6307\u5411\u6027\u9ea6\u514b\u98ce\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u73b0\u4ee3\u8fdc\u573a\u9ea6\u514b\u98ce\u8bbe\u8ba1\u7684\u5173\u952e\u6280\u672f<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u57fa\u4e8e\u4eba\u5de5\u667a\u80fd\u7684\u964d\u566a\u6280\u672f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u73b0\u4ee3\u8fdc\u573a\u7cfb\u7edf\u8d8a\u6765\u8d8a\u4f9d\u8d56\u4e8e <strong>\u6df1\u5ea6\u795e\u7ecf\u7f51\u7edc\uff08DNN\uff09\u6a21\u578b<\/strong> \u5728\u5927\u89c4\u6a21\u8bed\u97f3\u6570\u636e\u96c6\u4e0a\u8fdb\u884c\u8bad\u7ec3\u3002.<br>\u8fd9\u4e9b\u6a21\u578b\u53ef\u5c06\u4eba\u58f0\u6a21\u5f0f\u4e0e\u968f\u673a\u566a\u97f3\u533a\u5206\u5f00\u6765\uff0c\u4ece\u800c <strong>\u81ea\u9002\u5e94\u566a\u58f0\u6291\u5236\u8d85\u8fc7 30 dB<\/strong> \u4e0d\u6b6a\u66f2\u8bed\u8a00\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u56de\u58f0\u6d88\u9664\uff08AEC)\u3002<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5168\u53cc\u5de5\u901a\u4fe1\u79bb\u4e0d\u5f00 AEC\u3002.<br>\u901a\u8fc7\u4f7f\u7528\u626c\u58f0\u5668\u8f93\u51fa\u7684\u53c2\u8003\u4fe1\u53f7\uff0c\u8be5\u7cfb\u7edf\u53ef\u5728\u56de\u58f0\u5230\u8fbe\u8fdc\u7aef\u542c\u8005\u4e4b\u524d\u6709\u6548\u6d88\u9664\u56de\u58f0\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u81ea\u52a8\u589e\u76ca\u63a7\u5236 (AGC)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">AGC \u53ef\u52a8\u6001\u8c03\u6574\u4fe1\u53f7\u7535\u5e73\uff0c\u4ee5\u786e\u4fdd\u4fe1\u53f7\u8d28\u91cf\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e3a\u8fdc\u5904\u7684\u626c\u58f0\u5668\u63d0\u4f9b\u6e05\u6670\u7684\u8bed\u97f3\u62fe\u53d6<\/li>\n\n\n\n<li>\u9644\u8fd1\u7684\u626c\u58f0\u5668\u4e0d\u4f1a\u51fa\u73b0\u524a\u6ce2<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u4e00\u70b9\u5728\u4f1a\u8bae\u548c\u667a\u80fd\u7ec8\u7aef\u5e94\u7528\u4e2d\u5c24\u4e3a\u91cd\u8981\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u9ea6\u514b\u98ce\u9635\u5217\u7ed3\u6784\u8003\u8651\u56e0\u7d20<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u8bbe\u8ba1\u5168\u5411\u8fdc\u573a\u4f20\u58f0\u5668\u9635\u5217\u65f6\uff0c\u5de5\u7a0b\u5e08\u5e94\u4ed4\u7ec6\u8003\u8651\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u9ea6\u514b\u98ce\u6570\u91cf<\/strong> (\u4f8b\u5982\uff1a4 \u901a\u9053\u9635\u5217\u4e0e 8 \u901a\u9053\u9635\u5217\uff09<\/li>\n\n\n\n<li><strong>\u9ea6\u514b\u98ce\u95f4\u8ddd\u548c\u5e03\u5c40<\/strong><\/li>\n\n\n\n<li><strong>\u673a\u68b0\u5916\u58f3\u548c\u9694\u97f3\u5ba4\u8bbe\u8ba1<\/strong><\/li>\n\n\n\n<li><strong>\u9694\u7edd\u632f\u52a8\u548c\u6c14\u6d41\u566a\u97f3<\/strong><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u8f83\u9ad8\u7684\u901a\u9053\u6570\u901a\u5e38\u80fd\u63d0\u9ad8\u7a7a\u95f4\u5206\u8fa8\u7387\u548c\u8fdc\u573a\u6027\u80fd\uff0c\u5c24\u5176\u662f\u5728\u5927\u623f\u95f4\u5185\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u793a\u4f8b\uff1a\u4eba\u5de5\u667a\u80fd\u4f9b\u7535\u7684 8 \u901a\u9053\u5168\u5411\u9ea6\u514b\u98ce\u9635\u5217<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u4e9b\u8bbe\u8ba1\u539f\u5219\u5728\u4eba\u5de5\u667a\u80fd\u9a71\u52a8\u7684\u9ea6\u514b\u98ce\u9635\u5217\u6a21\u5757\u4e2d\u5f97\u5230\u4e86\u5b9e\u9645\u5e94\u7528\uff0c\u4f8b\u5982 <strong>LDP6218<\/strong>, \u5b83\u96c6\u6210\u4e86<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img decoding=\"async\" src=\"https:\/\/sistc.com\/wp-content\/uploads\/2026\/02\/20260130145104_80_341-768x1024.jpg\" alt=\"\" class=\"wp-image-15945\" style=\"width:288px;height:auto\"\/><figcaption class=\"wp-element-caption\">\u4eba\u5de5\u667a\u80fd\u9a71\u52a8\u7684 8 \u901a\u9053\u5168\u5411\u8fdc\u573a\u9ea6\u514b\u98ce\u9635\u5217\u6a21\u5757<\/figcaption><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e00\u4e2a <strong>8 \u901a\u9053\u5168\u5411 MEMS \u9ea6\u514b\u98ce\u9635\u5217<\/strong><\/li>\n\n\n\n<li>\u57fa\u4e8e\u4eba\u5de5\u667a\u80fd\u7684\u964d\u566a\u529f\u80fd\uff0c\u6291\u5236\u7387\u226535 dB<\/li>\n\n\n\n<li>\u96c6\u6210 <strong>AEC \u548c AGC<\/strong><\/li>\n\n\n\n<li>\u8fdc\u573a\u8bed\u97f3\u62fe\u53d6\u9ad8\u8fbe <strong>10 \u7c73<\/strong><\/li>\n\n\n\n<li>\u514d\u9a71\u52a8\u7a0b\u5e8f <strong>USB \u97f3\u9891\u8bbe\u5907<\/strong> \u548c\u6a21\u62df\u97f3\u9891\u63a5\u53e3<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 \u70b9\u51fb\u6b64\u5904\u4e86\u89e3\u66f4\u591a\u4ea7\u54c1\u4fe1\u606f\uff1a<br><strong><a href=\"https:\/\/sistc.com\/zh\/product\/ai-omnidirectional-far-field-microphone-array\/\">\u4eba\u5de5\u667a\u80fd\u9a71\u52a8\u7684 8 \u901a\u9053\u5168\u5411\u8fdc\u573a\u9ea6\u514b\u98ce\u9635\u5217\u6a21\u5757<\/a><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u79cd\u6a21\u5757\u63d0\u4f9b\u4e86\u4e00\u4e2a\u53ef\u968f\u65f6\u96c6\u6210\u7684\u786c\u4ef6\u548c\u7b97\u6cd5\u5e73\u53f0\uff0c\u5927\u5927\u7f29\u77ed\u4e86\u539f\u59cb\u8bbe\u5907\u5236\u9020\u5546\u7684\u5f00\u53d1\u5468\u671f\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5178\u578b\u5e94\u7528<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fdc\u573a\u5168\u5411\u9ea6\u514b\u98ce\u9635\u5217\u5e7f\u6cdb\u5e94\u7528\u4e8e\u4ee5\u4e0b\u9886\u57df<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4f1a\u8bae\u97f3\u54cd\u548c\u4f1a\u8bae\u7cfb\u7edf<\/li>\n\n\n\n<li>\u4e00\u4f53\u5316\u4f1a\u8bae\u8bbe\u5907<\/li>\n\n\n\n<li>\u4f1a\u8bae\u6444\u50cf\u673a<\/li>\n\n\n\n<li>\u667a\u80fd\u663e\u793a\u5668\u548c\u4e92\u52a8\u7ec8\u7aef<\/li>\n\n\n\n<li>\u670d\u52a1\u673a\u5668\u4eba\u548c\u58f0\u63a7\u8bbe\u5907<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u968f\u7740\u8bed\u97f3\u4ea4\u4e92\u7684\u4e0d\u65ad\u53d1\u5c55\uff0c\u5bf9\u53ef\u9760\u7684\u8fdc\u573a\u9ea6\u514b\u98ce\u89e3\u51b3\u65b9\u6848\u7684\u9700\u6c42\u5c06\u6301\u7eed\u589e\u957f\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u7ed3\u8bba<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fdc\u573a\u5168\u5411\u9ea6\u514b\u98ce\u7684\u8bbe\u8ba1\u4e0d\u518d\u53ea\u662f\u786c\u4ef6\u95ee\u9898\u3002.<br>\u7ed3\u5408 <strong>MEMS \u9ea6\u514b\u98ce\u9635\u5217\u3001\u58f0\u5b66\u8bbe\u8ba1\u548c\u4eba\u5de5\u667a\u80fd\u9a71\u52a8\u7684\u4fe1\u53f7\u5904\u7406<\/strong> \u662f\u5728\u771f\u5b9e\u73af\u5883\u4e2d\u5b9e\u73b0\u6e05\u6670\u3001\u81ea\u7136\u8bed\u97f3\u6355\u6349\u7684\u5173\u952e\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5bf9\u4e8e\u4ea7\u54c1\u8bbe\u8ba1\u5e08\u548c\u7cfb\u7edf\u96c6\u6210\u5546\u6765\u8bf4\uff0c\u9009\u62e9\u96c6\u6210\u5f0f\u4eba\u5de5\u667a\u80fd\u9ea6\u514b\u98ce\u9635\u5217\u89e3\u51b3\u65b9\u6848\u53ef\u4ee5\u5927\u5927\u964d\u4f4e\u5f00\u53d1\u98ce\u9669\uff0c\u540c\u65f6\u63d0\u9ad8\u8bed\u97f3\u6027\u80fd\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5173\u4e8e SISTC<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u65e0\u9521\u7845\u6e90\u79d1\u6280\u6709\u9650\u516c\u53f8\uff08SISTC(\u65e0\u9521\u7845\u6e90\u79d1\u6280\u6709\u9650\u516c\u53f8\uff09<\/strong> \u5728 MEMS \u9ea6\u514b\u98ce\u548c\u97f3\u9891\u7cfb\u7edf\u8bbe\u8ba1\u65b9\u9762\u62e5\u6709\u8d85\u8fc7 15 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