{"id":15901,"date":"2025-12-25T06:14:51","date_gmt":"2025-12-25T06:14:51","guid":{"rendered":"https:\/\/sistc.com\/?p=15901"},"modified":"2025-12-25T06:14:55","modified_gmt":"2025-12-25T06:14:55","slug":"blog-ultra-low-power-wake-word-smart-mems-microphone","status":"publish","type":"post","link":"https:\/\/sistc.com\/zh\/blog-ultra-low-power-wake-word-smart-mems-microphone\/","title":{"rendered":"\u8d85\u4f4e\u529f\u8017\u5524\u9192\u5f0f\u667a\u80fd MEMS \u9ea6\u514b\u98ce\uff0c\u5b9e\u73b0\u59cb\u7ec8\u5728\u7ebf\u7684\u4eba\u5de5\u667a\u80fd\u97f3\u9891"},"content":{"rendered":"<h2 class=\"wp-block-heading\">\u5bfc\u8a00<\/h2><p>\u59cb\u7ec8\u5728\u7ebf\u7684\u8bed\u97f3\u4ea4\u4e92\u5df2\u6210\u4e3a\u667a\u80fd\u5bb6\u5c45\u8bbe\u5907\u3001\u53ef\u7a7f\u6234\u8bbe\u5907\u3001AR\/VR \u548c\u7535\u6c60\u4f9b\u7535\u6d88\u8d39\u7535\u5b50\u4ea7\u54c1\u7684\u6838\u5fc3\u8981\u6c42\u3002\u8bbe\u8ba1\u4eba\u5458\u9762\u4e34\u7740\u4e00\u9879\u5173\u952e\u6311\u6218\uff1a <strong>\u5982\u4f55\u5728\u4fdd\u6301\u7cfb\u7edf\u6301\u7eed\u76d1\u542c\u7684\u540c\u65f6\u6700\u5927\u9650\u5ea6\u5730\u964d\u4f4e\u529f\u8017<\/strong>.<\/p><p>SISTC\u7684 <strong>WBC-HRA381-M10 \u667a\u80fd MEMS \u9ea6\u514b\u98ce\u6a21\u5757<\/strong> \u4ece <strong>\u65e0\u9521\u7845\u6e90\u79d1\u6280\u6709\u9650\u516c\u53f8\uff08SISTC(\u65e0\u9521\u7845\u6e90\u79d1\u6280\u6709\u9650\u516c\u53f8\uff09<\/strong> \u4e3a\u4e86\u5e94\u5bf9\u8fd9\u4e00\u6311\u6218\uff0c\u5b83\u5c06\u9ad8\u6027\u80fd MEMS \u9ea6\u514b\u98ce\u4e0e <strong>\u8d85\u4f4e\u529f\u8017\u4eba\u5de5\u667a\u80fd\u5904\u7406<\/strong>\u4f7f <strong>\u79bb\u7ebf\u5524\u9192\u8bcd\u68c0\u6d4b<\/strong> \u4e0e <strong>\u8bed\u97f3\u6d3b\u52a8\u68c0\u6d4b\uff08VAD\uff09<\/strong> \u5fae\u5b89\u7ea7\u7535\u6d41\u6d88\u8017\u3002<\/p><p>\u672c\u6587\u5c06\u4ecb\u7ecd WBC-HRA381-M10 \u7684\u7ed3\u6784\u3001\u5de5\u4f5c\u6a21\u5f0f\u548c\u5e94\u7528\u4ef7\u503c\uff0c\u91cd\u70b9\u662f <strong>\u4f4e\u529f\u8017<\/strong> \u4e0e <strong>\u5524\u9192\u529f\u80fd<\/strong>.<\/p><h2 class=\"wp-block-heading\">\u4ec0\u4e48\u662f WBC-HRA381-M10\uff1f<\/h2><p>WBC-HRA381-M10 \u662f\u4e00\u79cd <strong>\u652f\u6301\u4eba\u5de5\u667a\u80fd\u7684\u667a\u80fd MEMS \u9ea6\u514b\u98ce\u6a21\u5757<\/strong> \u7ed3\u5408\u5728\u4e00\u8d77\uff1a<\/p><ul class=\"wp-block-list\"><li>\u9ad8 SNR MEMS \u9ea6\u514b\u98ce<\/li>\n\n<li>\u6a21\u62df\u4fe1\u53f7\u5904\u7406\uff08ASP\uff09<\/li>\n\n<li>\u5168\u5929\u5019\u4f4e\u529f\u8017\u795e\u7ecf\u5904\u7406\u5668\uff08LP-NPU\uff09<\/li>\n\n<li>\u795e\u7ecf\u5904\u7406\u5355\u5143 (NPU)\uff0c\u7528\u4e8e\u5173\u952e\u8bcd\u5b9a\u4f4d (KWS)<\/li>\n\n<li>\u96c6\u6210\u5f0f\u7535\u6e90\u7ba1\u7406 (PMU)<\/li><\/ul><p>\u4f20\u7edf\u7684\u6570\u5b57\u9ea6\u514b\u98ce\u4f1a\u5c06\u97f3\u9891\u6e90\u6e90\u4e0d\u65ad\u5730\u4f20\u8f93\u5230\u4e3b\u673a MCU\uff0c\u800c\u8be5\u6a21\u5757\u5219\u4e0d\u540c\uff0c\u5b83\u80fd\u5b9e\u73b0 <strong>\u5c40\u90e8\u63a8\u7406<\/strong>\u5524\u9192\u4e3b\u673a\u7cfb\u7edf <strong>\u53ea\u6709\u5728\u68c0\u6d4b\u5230\u6709\u6548\u8bed\u97f3\u6216\u5173\u952e\u5b57\u65f6<\/strong>.<\/p><figure class=\"wp-block-image aligncenter size-full is-resized\"><img fetchpriority=\"high\" decoding=\"async\" width=\"714\" height=\"502\" src=\"https:\/\/sistc.com\/wp-content\/uploads\/2025\/12\/Functional-block-diagram.png\" alt=\"\" class=\"wp-image-15902\" style=\"width:626px;height:auto\" srcset=\"https:\/\/sistc.com\/wp-content\/uploads\/2025\/12\/Functional-block-diagram.png 714w, https:\/\/sistc.com\/wp-content\/uploads\/2025\/12\/Functional-block-diagram-300x211.png 300w, https:\/\/sistc.com\/wp-content\/uploads\/2025\/12\/Functional-block-diagram-18x12.png 18w, https:\/\/sistc.com\/wp-content\/uploads\/2025\/12\/Functional-block-diagram-600x422.png 600w\" sizes=\"(max-width: 714px) 100vw, 714px\" \/><figcaption class=\"wp-element-caption\">\u529f\u80fd\u6846\u56fe<\/figcaption><\/figure><p>\u76f8\u5173\u4ea7\u54c1\u6982\u8ff0\uff1a <strong><a href=\"https:\/\/sistc.com\/zh\/product\/smart-mems-microphone\/\"><mark style=\"background-color:rgba(0, 0, 0, 0);color:#0693e3\" class=\"has-inline-color\">\u667a\u80fd MEMS \u9ea6\u514b\u98ce<\/mark><\/a><\/strong><\/p><h2 class=\"wp-block-heading\">\u4e3b\u8981\u529f\u80fd\u6982\u89c8<\/h2><h3 class=\"wp-block-heading\">1.\u8d85\u4f4e\u529f\u8017\u59cb\u7ec8\u4fdd\u6301\u8fd0\u884c<\/h3><p>\u529f\u8017\u5bf9\u4e8e\u7535\u6c60\u4f9b\u7535\u548c\u59cb\u7ec8\u76d1\u542c\u7684\u8bbe\u5907\u81f3\u5173\u91cd\u8981\uff1a<\/p><ul class=\"wp-block-list\"><li><strong>VAD \u6a21\u5f0f\uff1a<\/strong> ~70 \u00b5A<\/li>\n\n<li><strong>KWS \u6fc0\u6d3b\u6a21\u5f0f\uff1a<\/strong> ~160-170 \u00b5A<\/li><\/ul><p>\u901a\u8fc7\u4f7f\u7528\u4e8b\u4ef6\u9a71\u52a8\u6a21\u62df\u524d\u7aef\u548c LP-NPU\uff0c\u9ea6\u514b\u98ce\u53ef\u5168\u5929\u5019\u4fdd\u6301\u5de5\u4f5c\u72b6\u6001\uff0c\u800c\u4e0d\u4f1a\u8017\u5c3d\u7cfb\u7edf\u529f\u7387\u3002<\/p><h3 class=\"wp-block-heading\">2.\u96c6\u6210\u5524\u9192\u8bcd\u548c\u8bed\u97f3\u68c0\u6d4b\u529f\u80fd<\/h3><p>\u8be5\u6a21\u5757\u652f\u6301 <strong>\u79bb\u7ebf\u8bed\u97f3\u667a\u80fd<\/strong>:<\/p><ul class=\"wp-block-list\"><li>\u5185\u7f6e <strong>\u8bed\u97f3\u6d3b\u52a8\u68c0\u6d4b (VAD)<\/strong><\/li>\n\n<li><strong>\u5173\u952e\u8bcd\u641c\u7d22 (KWS)<\/strong> \u652f\u6301\u591a\u8fbe <strong>30 \u4e2a\u9884\u5b9a\u4e49\u5524\u9192\u8bcd<\/strong><\/li>\n\n<li>\u65e0\u9700\u4e91\u8fde\u63a5<\/li><\/ul><p>\u56e0\u6b64\uff0c\u5b83\u975e\u5e38\u9002\u5408\u9690\u79c1\u654f\u611f\u578b\u5e94\u7528\u548c\u5fc5\u987b\u5373\u65f6\u54cd\u5e94\u7684\u4ea7\u54c1\u3002<\/p><h3 class=\"wp-block-heading\">3.\u9ad8\u58f0\u5b66\u6027\u80fd<\/h3><p>\u5c3d\u7ba1\u529f\u8017\u4f4e\uff0c\u4f46\u58f0\u5b66\u6027\u80fd\u4f9d\u7136\u5f3a\u52b2\uff1a<\/p><ul class=\"wp-block-list\"><li><strong>\u4fe1\u566a\u6bd4\uff1a<\/strong> 65 \u5206\u8d1d<\/li>\n\n<li><strong>\u58f0\u97f3\u8fc7\u8f7d\u70b9\uff1a<\/strong> 129 dBSPL<\/li>\n\n<li><strong>\u7075\u654f\u5ea6\u5bb9\u5dee\uff1a<\/strong> \u00b11 dB<\/li>\n\n<li><strong>\u5168\u5411\u54cd\u5e94<\/strong><\/li><\/ul><p>\u5373\u4f7f\u5728\u5608\u6742\u7684\u73af\u5883\u4e2d\uff0c\u4e5f\u80fd\u786e\u4fdd\u53ef\u9760\u7684\u5524\u9192\u8bcd\u68c0\u6d4b\u3002<\/p><h3 class=\"wp-block-heading\">4.\u7528\u4e8e\u7a7a\u95f4\u53d7\u9650\u8bbe\u8ba1\u7684\u7d27\u51d1\u578b\u6a21\u5757<\/h3><ul class=\"wp-block-list\"><li>\u5305\u88c5\u5c3a\u5bf8 <strong>3.5 \u00d7 2.65 \u00d7 1.0 \u6beb\u7c73<\/strong><\/li>\n\n<li>\u9488\u5bf9\u53ef\u7a7f\u6234\u8bbe\u5907\u3001\u8033\u585e\u548c\u7d27\u51d1\u578b\u7269\u8054\u7f51\u8bbe\u5907\u8fdb\u884c\u4e86\u4f18\u5316<\/li><\/ul><h2 class=\"wp-block-heading\">\u667a\u80fd\u67b6\u6784\uff1a\u4f4e\u529f\u8017\u5524\u9192\u8bcd\u5982\u4f55\u5de5\u4f5c<\/h2><h3 class=\"wp-block-heading\">\u59cb\u7ec8\u8fd0\u884c\u7684 LP-NPU\uff08\u4e8b\u4ef6\u9a71\u52a8\u578b\uff09<\/h3><p>SISTC\u7684 <strong>LP-NPU<\/strong> \u5b83\u4f7f\u7528\u8f7b\u91cf\u7ea7\u4e8c\u5143\u795e\u7ecf\u7f51\u7edc\u6301\u7eed\u76d1\u6d4b\u97f3\u9891\u7279\u5f81\u3002\u5b83\u7684\u8fd0\u884c\u529f\u8017\u6781\u4f4e\uff0c\u5e76\u59cb\u7ec8\u4fdd\u6301\u6fc0\u6d3b\u72b6\u6001\u3002<\/p><ul class=\"wp-block-list\"><li>\u68c0\u6d4b\u4eba\u58f0\uff08VAD\uff09<\/li>\n\n<li>\u6ee4\u9664\u7a33\u6001\u80cc\u666f\u566a\u58f0<\/li>\n\n<li>\u4ec5\u5728\u9700\u8981\u65f6\u89e6\u53d1\u7cfb\u7edf\u5524\u9192<\/li><\/ul><h3 class=\"wp-block-heading\">\u5206\u5c42\u4eba\u5de5\u667a\u80fd\u5904\u7406<\/h3><ol class=\"wp-block-list\"><li><strong>VAD \u6a21\u5f0f\uff1a<\/strong> LP-NPU \u8fde\u7eed\u76d1\u542c\uff08~70 \u00b5A\uff09<\/li>\n\n<li><strong>\u5524\u9192\u6d3b\u52a8\uff1a<\/strong> \u68c0\u6d4b\u5230\u4eba\u58f0<\/li>\n\n<li><strong>KWS \u6a21\u5f0f\uff1a<\/strong> \u4e3b NPU \u542f\u52a8\u4ee5\u8bc6\u522b\u5173\u952e\u5b57<\/li>\n\n<li><strong>\u4e2d\u65ad\u8f93\u51fa\uff1a<\/strong> \u4e3b\u673a MCU \u5524\u9192\u5e76\u91c7\u53d6\u884c\u52a8<\/li><\/ol><p>\u8fd9 <strong>\u5206\u5c42\u4eba\u5de5\u667a\u80fd\u65b9\u6cd5<\/strong> \u5927\u5927\u964d\u4f4e\u4e86\u7cfb\u7edf\u5e73\u5747\u529f\u8017\u3002<\/p><h2 class=\"wp-block-heading\">\u8fd0\u884c\u6a21\u5f0f<\/h2><h3 class=\"wp-block-heading\">\u8bed\u97f3\u6d3b\u52a8\u68c0\u6d4b\uff08VAD \u6a21\u5f0f\uff09<\/h3><ul class=\"wp-block-list\"><li>\u968f\u65f6\u968f\u5730\u8046\u542c<\/li>\n\n<li>\u68c0\u6d4b\u5230\u8bed\u97f3\u65f6\u4e2d\u65ad\u8f93\u51fa<\/li>\n\n<li>\u8d85\u4f4e\u529f\u8017\u5907\u7528\u7cfb\u7edf\u7684\u7406\u60f3\u9009\u62e9<\/li><\/ul><h3 class=\"wp-block-heading\">\u8fde\u7eed\u5173\u952e\u8bcd\u641c\u7d22\uff08KWS \u6a21\u5f0f\uff09<\/h3><ul class=\"wp-block-list\"><li>\u8fde\u7eed\u5173\u952e\u8bcd\u63a8\u7406<\/li>\n\n<li>\u8017\u7535\u91cf\u7565\u9ad8<\/li>\n\n<li>\u9002\u7528\u4e8e\u9700\u8981\u5373\u65f6\u8bed\u97f3\u547d\u4ee4\u54cd\u5e94\u7684\u573a\u5408<\/li><\/ul><h3 class=\"wp-block-heading\">\u8d85\u4f4e\u529f\u8017\u5524\u9192\u6a21\u5f0f\uff08VAD + KWS\uff09<\/h3><ul class=\"wp-block-list\"><li>\u9ed8\u8ba4\u4f4e\u529f\u8017 VAD \u76d1\u6d4b<\/li>\n\n<li>\u4ec5\u5728\u8bed\u97f3\u68c0\u6d4b\u540e\u81ea\u52a8\u5207\u6362\u5230 KWS<\/li>\n\n<li>\u6700\u4f73\u5e73\u8861 <strong>\u54cd\u5e94\u901f\u5ea6\u548c\u7535\u6c60\u5bff\u547d<\/strong><\/li><\/ul><h2 class=\"wp-block-heading\">\u5178\u578b\u5e94\u7528<\/h2><p>WBC-HRA381-M10 \u4e13\u4e3a\u5404\u79cd\u4eba\u5de5\u667a\u80fd\u97f3\u9891\u4ea7\u54c1\u800c\u8bbe\u8ba1\uff1a<\/p><ul class=\"wp-block-list\"><li>\u667a\u80fd\u626c\u58f0\u5668\u548c\u667a\u80fd\u5bb6\u5c45\u63a7\u5236\u5668<\/li>\n\n<li>TWS \u8033\u585e\u548c\u8033\u673a<\/li>\n\n<li>\u667a\u80fd\u624b\u8868\u548c\u5065\u8eab\u53ef\u7a7f\u6234\u8bbe\u5907<\/li>\n\n<li>AR\/VR \u773c\u955c<\/li>\n\n<li>\u667a\u80fd\u624b\u673a\u548c\u5e73\u677f\u7535\u8111<\/li>\n\n<li>\u7535\u6c60\u4f9b\u7535\u7684\u7269\u8054\u7f51\u8bbe\u5907<\/li><\/ul><p>\u6709\u5173\u5524\u9192\u8bcd\u6280\u672f\u7684\u66f4\u591a\u80cc\u666f\u4fe1\u606f\uff0c\u8bf7\u53c2\u9605<\/p><ul class=\"wp-block-list\"><li>\u5916\u90e8\u53c2\u8003\u8d44\u6599\uff1a <a href=\"https:\/\/www.tensorflow.org\/lite\/microcontrollers\/overview\" target=\"_blank\" rel=\"noreferrer noopener\"><mark style=\"background-color:rgba(0, 0, 0, 0);color:#0693e3\" class=\"has-inline-color\"><em>\u4e3a\u5d4c\u5165\u5f0f\u7cfb\u7edf\u5bfb\u627e\u5173\u952e\u8bcd<\/em> (TensorFlow Lite Micro \u6587\u6863\uff09<\/mark><\/a><\/li>\n\n<li>\u5916\u90e8\u53c2\u8003\u8d44\u6599\uff1a <a href=\"https:\/\/ieeexplore.ieee.org\/document\/8463870\"><em><mark style=\"background-color:rgba(0, 0, 0, 0);color:#0693e3\" class=\"has-inline-color\">\u8bed\u97f3\u6d3b\u52a8\u68c0\u6d4b\u6982\u8ff0<\/mark><\/em><\/a><mark style=\"background-color:rgba(0, 0, 0, 0);color:#0693e3\" class=\"has-inline-color\"><a href=\"https:\/\/ieeexplore.ieee.org\/document\/8463870\"> <\/a>(\u7535\u6c14\u548c\u7535\u5b50\u5de5\u7a0b\u5e08\u5b66\u4f1a\u4fe1\u53f7\u5904\u7406\u6742\u5fd7\uff09<\/mark><\/li><\/ul><h2 class=\"wp-block-heading\">\u8bbe\u8ba1\u4e0e\u96c6\u6210\u4f18\u52bf<\/h2><ul class=\"wp-block-list\"><li><strong>I2C \u63a5\u53e3<\/strong> \u7528\u4e8e\u7b80\u5355\u7684\u4e3b\u673a\u901a\u4fe1<\/li>\n\n<li>\u57fa\u4e8e\u4e2d\u65ad\u7684\u5524\u9192\u4fe1\u53f7<\/li>\n\n<li>\u51cf\u5c11 MCU \u8d1f\u8f7d\u548c\u7cfb\u7edf BOM<\/li>\n\n<li>\u7f29\u77ed\u8bed\u97f3\u4ea7\u54c1\u7684\u4e0a\u5e02\u65f6\u95f4<\/li><\/ul><p>\u901a\u8fc7\u5c06\u667a\u80fd\u76f4\u63a5\u5d4c\u5165\u9ea6\u514b\u98ce\uff0c\u7cfb\u7edf\u8bbe\u8ba1\u4eba\u5458\u53ef\u4ee5\u7b80\u5316\u56fa\u4ef6\u3001\u964d\u4f4e\u529f\u8017\u9884\u7b97\u5e76\u6539\u5584\u7528\u6237\u4f53\u9a8c\u3002<\/p><h2 class=\"wp-block-heading\">\u7ed3\u8bba<\/h2><p>SISTC\u7684 <strong>WBC-HRA381-M10 \u667a\u80fd MEMS \u9ea6\u514b\u98ce\u6a21\u5757<\/strong> \u4ee3\u8868\u7740\u65b0\u4e00\u4ee3 <strong>\u59cb\u7ec8\u5728\u7ebf\u7684\u8d85\u4f4e\u529f\u8017\u8bed\u97f3\u63a5\u53e3<\/strong>.\u901a\u8fc7\u5c06\u9ad8\u8d28\u91cf\u58f0\u5b66\u4e0e\u96c6\u6210\u7684\u4eba\u5de5\u667a\u80fd\u5524\u9192\u8bcd\u5904\u7406\u76f8\u7ed3\u5408\uff0c\u5b83\u4f7f\u8bbe\u8ba1\u4eba\u5458\u80fd\u591f\u8bbe\u8ba1\u51fa\u53cd\u5e94\u7075\u654f\u3001\u79c1\u5bc6\u4e14\u8282\u80fd\u7684\u58f0\u63a7\u4ea7\u54c1\u3002<\/p><p>\u5982\u679c\u60a8\u6b63\u5728\u5f00\u53d1\u7684\u4e0b\u4e00\u4ee3\u667a\u80fd\u8bbe\u5907\u4f9d\u8d56\u4e8e <strong>\u4f4e\u529f\u8017\u548c\u53ef\u9760\u7684\u5524\u9192\u8bcd\u68c0\u6d4b<\/strong>\u8be5\u6a21\u5757\u63d0\u4f9b\u4e86\u4e00\u4e2a\u4ee4\u4eba\u4fe1\u670d\u7684\u89e3\u51b3\u65b9\u6848\u3002<\/p><p>\u4e86\u89e3\u6709\u5173 SISTC \u667a\u80fd\u9ea6\u514b\u98ce\u89e3\u51b3\u65b9\u6848\u7684\u66f4\u591a\u4fe1\u606f\uff1a<br><strong><a href=\"https:\/\/sistc.com\/zh\/product\/smart-mems-microphone\/\"><mark style=\"background-color:rgba(0, 0, 0, 0);color:#0693e3\" 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