{"id":87114,"date":"2024-01-16T16:21:35","date_gmt":"2024-01-16T08:21:35","guid":{"rendered":"\/\/www.viralrail.com\/?p=87114"},"modified":"2024-01-16T16:21:41","modified_gmt":"2024-01-16T08:21:41","slug":"spxhkjsjgs","status":"publish","type":"post","link":"\/\/www.viralrail.com\/blog\/87114.html","title":{"rendered":"\u5c04\u9891\u4fe1\u53f7\u7a7a\u95f4\u8870\u51cf\u516c\u5f0f"},"content":{"rendered":"\n<p>\u3000\u3000<strong>\u5c04\u9891\u4fe1\u53f7<\/strong>\u7684\u7a7a\u95f4\u8870\u51cf\u662f\u65e0\u7ebf\u901a\u4fe1\u4e2d\u4e00\u4e2a\u91cd\u8981\u7684\u6982\u5ff5\uff0c\u5b83\u63cf\u8ff0\u4e86\u4fe1\u53f7\u5728\u4f20\u8f93\u8fc7\u7a0b\u4e2d\u968f\u7740\u8ddd\u79bb\u589e\u52a0\u800c\u9010\u6e10\u51cf\u5f31\u7684\u73b0\u8c61\u3002\u4e86\u89e3\u5c04\u9891\u4fe1\u53f7\u7a7a\u95f4\u8870\u51cf\u516c\u5f0f\u5bf9\u4e8e\u8bbe\u8ba1\u548c\u4f18\u5316\u65e0\u7ebf\u901a\u4fe1\u7cfb\u7edf\u81f3\u5173\u91cd\u8981\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u5c04\u9891\u4fe1\u53f7\u7a7a\u95f4\u8870\u51cf\u516c\u5f0f\u7684\u542b\u4e49\u548c\u5e94\u7528\uff0c\u5e76\u63a2\u8ba8\u5176\u5728\u5b9e\u9645\u5de5\u7a0b\u4e2d\u7684\u91cd\u8981\u6027\u3002<\/p>\n\n\n\n<h2 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class=\"wp-block-heading\">\u3000\u30001. \u81ea\u7531\u7a7a\u95f4\u4f20\u64ad\u6a21\u578b<\/h2>\n\n\n\n<p>\u3000\u3000\u81ea\u7531\u7a7a\u95f4\u4f20\u64ad\u6a21\u578b\u662f\u6700\u7b80\u5355\u548c\u6700\u5e38\u7528\u7684\u5c04\u9891\u4fe1\u53f7\u7a7a\u95f4\u8870\u51cf\u516c\u5f0f\u4e4b\u4e00\u3002\u5b83\u57fa\u4e8e\u81ea\u7531\u7a7a\u95f4\u4e2d\u7684\u4f20\u64ad\u6761\u4ef6\uff0c\u5ffd\u7565\u4e86\u969c\u788d\u7269\u548c\u591a\u5f84\u6548\u5e94\u7b49\u56e0\u7d20\uff0c\u9002\u7528\u4e8e\u5f00\u9614\u533a\u57df\u7684\u65e0\u7ebf\u901a\u4fe1\u3002\u5176\u6570\u5b66\u8868\u8fbe\u5f0f\u5982\u4e0b\uff1a<\/p>\n\n\n\n<p>\u3000\u3000<strong>A = 20log(d) + 20log(f) + 20log(4\u03c0\/c)<\/strong><\/p>\n\n\n\n<p>\u3000\u3000\u5176\u4e2d\uff0cA\u4e3a\u8def\u5f84\u635f\u8017(\u5355\u4f4d\uff1adB)\uff0cd\u4e3a\u8ddd\u79bb(\u5355\u4f4d\uff1a\u7c73)\uff0cf\u4e3a\u9891\u7387(\u5355\u4f4d\uff1a\u8d6b\u5179)\uff0cc\u4e3a\u5149\u901f(\u5355\u4f4d\uff1a\u7c73\/\u79d2)\u3002<\/p>\n\n\n\n<h2 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