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  \u589e\u76cadb\u662f\u4e00\u4e2a\u8861\u91cf\u4fe1\u53f7\u653e\u5927\u5668\u6027\u80fd\u7684\u91cd\u8981\u6307\u6807\uff0c\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u4e86\u89e3\u4fe1\u53f7\u653e\u5927\u5668\u8f93\u51fa\u4fe1\u53f7\u76f8\u5bf9\u4e8e\u8f93\u5165\u4fe1\u53f7\u7684\u589e\u957f\u5e45\u5ea6\u3002\u4e86\u89e3\u5982\u4f55\u8ba1\u7b97\u589e\u76cadb\u5c06\u6709\u52a9\u4e8e\u6211\u4eec\u66f4\u597d\u5730\u7406\u89e3\u548c\u5e94\u7528\u8fd9\u4e00\u6982\u5ff5\u3002<\/p>\n

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  \u589e\u76ca\uff08db\uff09= 10 * log10\uff08\u8f93\u51fa\u529f\u7387 \/ \u8f93\u5165\u529f\u7387\uff09<\/p>\n

  \u901a\u8fc7\u8fd9\u4e2a\u516c\u5f0f\uff0c\u6211\u4eec\u53ef\u4ee5\u5f88\u65b9\u4fbf\u5730\u8ba1\u7b97\u51fa\u4fe1\u53f7\u7684\u589e\u76cadb\u503c\uff0c\u4ece\u800c\u4e86\u89e3\u4fe1\u53f7\u653e\u5927\u5668\u7684\u6027\u80fd\u548c\u4f5c\u7528\u3002<\/p>\n

\u589e\u76cadb\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\u7684\u610f\u4e49<\/h2>\n

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\u603b\u7ed3<\/h2>\n

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