{"id":246,"date":"2022-04-10T11:04:26","date_gmt":"2022-04-10T03:04:26","guid":{"rendered":"https:\/\/www.itvst.com\/?p=246"},"modified":"2022-04-10T11:04:26","modified_gmt":"2022-04-10T03:04:26","slug":"%e8%b0%83%e5%88%b6%e4%b8%8e%e5%88%b6%e5%bc%8f-%e8%b0%83%e9%a2%91fm","status":"publish","type":"post","link":"https:\/\/www.ingvs.com\/index.php\/2022\/04\/10\/%e8%b0%83%e5%88%b6%e4%b8%8e%e5%88%b6%e5%bc%8f-%e8%b0%83%e9%a2%91fm\/","title":{"rendered":"\u8c03\u5236\u4e0e\u5236\u5f0f-\u8c03\u9891FM"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.ingvs.com\/wp-content\/uploads\/2022\/04\/b1.jpg\" alt=\"\u8c03\u5236\u4e0e\u5236\u5f0f (1)\u8c03\u9891FM\"\/><\/figure>\n\n\n\n<p>\u867d\u7136\u4e2d\u56fd\u7684\u5927\u4f17\u662f\u4ece70\u5e74\u4ee3\u540e\u624d\u80fd\u542c\u5230\u8c03\u9891\u5e7f\u64ad\uff0c\u4f46\u5b9e\u9645\u4e0aFM\u7684\u53d1\u660e\u5e76\u4e0d\u662f\u5f88\u65b0\u7684\u4e8b\u60c5\u3002FM\u7684\u53d1\u660e\u8005\u662f\u57c3\u5fb7\u6e29\u00b7\u963f\u59c6\u65af\u7279\u6717(Edwin Howard Armstrong, 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height=\"31\"\/><\/figure>\n\n\n\n<p>\uff0c\u6b63\u5f26\/\u4f59\u5f26\u6ce2\u62e5\u6709\u4e09\u4e2a\u53c2\u6570\uff1a\u5e45\u503c\u3001\u9891\u7387\u3001\u76f8\u4f4d\uff0c\u53ef\u88ab\u8c03\u5236\u53c2\u6570\u4e5f\u53ea\u6709\u8fd9\u4e09\u4e2a\u3002\u8ba9\u8f7d\u6ce2\u7684\u4e09\u4e2a\u53c2\u6570\u5206\u522b\u968f\u7740\u58f0\u6ce2\u4fe1\u53f7(\u57fa\u5e26\u4fe1\u53f7)\u53d8\u5316\uff0c\u5f97\u5230\u4e86\u4e09\u79cd\u57fa\u672c\u7684\u8c03\u5236\u65b9\u5f0f\uff1a\u8c03\u5e45\u3001\u8c03\u9891\u548c\u8c03\u76f8\u3002\u4f46\u540e\u4e24\u4e2a\u53c2\u6570\uff0c\u9891\u7387\u548c\u76f8\u4f4d\uff0c\u662f\u88ab\u65f6\u95f4t\u5173\u8054\u8d77\u6765\u7684\uff1a\u77ac\u65f6\u9891\u7387\u5c31\u662f\u77ac\u65f6\u76f8\u4f4d\u7684\u53d8\u5316\u7387\u3002\u8fd9\u5c31\u5c34\u5c2c\u4e86\uff0c\u8c03\u76f8\u548c\u8c03\u9891\u5176\u5b9e\u662f\u4e00\u56de\u4e8b\uff0c\u53ea\u662f\u5bf9\u57fa\u5e26\u4fe1\u53f7\u6c42\u5bfc\u6216\u79ef\u5206\u7684\u533a\u522b\u3002\u597d\u5427\uff0c\u4e09\u79cd\u57fa\u672c\u8c03\u5236\u53d8\u6210\u4e24\u79cd\u4e86\uff0c\u8c03\u9891\u548c\u8c03\u76f8\u7edf\u79f0\u4e3a\u201c\u89d2\u5ea6\u8c03\u5236\u201d\u3002<\/p>\n\n\n\n<p>\u5728\u8c03\u9891\u6ce2\u4e2d\uff0c\u8f7d\u6ce2\u7684\u77ac\u65f6\u9891\u7387\u53d7\u5230\u57fa\u5e26\u4fe1\u53f7\u7684\u63a7\u5236\uff0c\u4f46\u5e45\u503c\u4fdd\u6301\u4e0d\u53d8\u3002\u8003\u8651\u5728100MHz\u7684\u8f7d\u6ce2\u4e0a\uff0c\u7528FM\u4f20\u8f93\u4e00\u4e2a500Hz\u7684\u6b63\u5f26\u97f3\u9891\u4fe1\u53f7\uff1a100MHz\u5c31\u662f\u67d0\u4e2aFM\u5e7f\u64ad\u7535\u53f0\u53ef\u4ee5\u4f7f\u7528\u7684\u9891\u7387\uff0c\u800c\u60a8\u7528\u9ad8\u97f3do(<strong> 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class=\"wp-block-heading\">\u8c03\u9891\u8c03\u5236\u53c2\u6570<\/h2>\n\n\n\n<p>\u521a\u624d\u5728\u8ba8\u8bba\u4e2d\u4eba\u4e3a\u89c4\u5b9a\u4e86\u4e00\u4e2a\u5e38\u6570\uff0c\u5c31\u662f\u90a3\u4e2a75kHz\uff0c\u5b83\u662fFM\u4e2d\u4e00\u4e2a\u91cd\u8981\u7684\u53c2\u6570\uff0c\u53eb\u505a<strong>\u6700\u5927\u9891\u504f<\/strong>\u3002\u4e3a\u4e86\u5f97\u51fa\u53e6\u5916\u4e24\u4e2a\u91cd\u8981\u7684\u53c2\u6570\uff0c\u6211\u4eec\u73b0\u5728\u8981\u505a\u70b9\u6570\u5b66\uff1a<\/p>\n\n\n\n<p>\u628a\u968f\u65f6\u95f4\u53d8\u5316\u7684\u57fa\u5e26\u4fe1\u53f7\u5199\u6210<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.ingvs.com\/wp-content\/uploads\/2022\/04\/b3.png\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u00a0\uff0c\u90a3\u4e48\u8f7d\u6ce2\u7684\u77ac\u65f6\u89d2\u9891\u7387\u4f1a\u968f\u7740\u00a0<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.ingvs.com\/wp-content\/uploads\/2022\/04\/b4.png\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u00a0\u7ebf\u6027\u53d8\u5316\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.ingvs.com\/wp-content\/uploads\/2022\/04\/b5.png\" alt=\"[\u516c\u5f0f]\"\/><\/figure>\n\n\n\n<p>\u5176\u4e2dk_f\u662f\u7cfb\u6570\uff0c\u540e\u4e00\u9879\u7684\u6700\u5927\u503c\u5c31\u662f\u6700\u5927\u9891\u504f\uff08\u89d2\u9891\u7387\u548c\u9891\u7387\u4e4b\u95f4\u7684\u6362\u7b97\u7cfb\u6570\u662f2pi\uff09\uff0c\u8c03\u9891\u6ce2\u7684\u77ac\u65f6\u76f8\u4f4d\u662f\u77ac\u65f6\u89d2\u9891\u7387\u4ece0\u5230t\u7684\u79ef\u5206\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.ingvs.com\/wp-content\/uploads\/2022\/04\/b6.png\" alt=\"[\u516c\u5f0f]\"\/><\/figure>\n\n\n\n<p>\u6211\u4eec\u628a\u4e0a\u5f0f\u4e2d\u540e\u4e00\u9879\u7684<strong>\u6700\u5927\u503c<\/strong>\u5b9a\u4e49\u4e3a<strong>\u8c03\u5236\u6307\u6570<\/strong>\uff0c\u8bb0\u4f5cm\u3002<\/p>\n\n\n\n<p>\u8c03\u9891\u65f6\uff0c\u8f7d\u6ce2\u77ac\u65f6\u9891\u7387\u548c\u57fa\u5e26\u4fe1\u53f7\u6210\u7ebf\u6027\u5173\u7cfb\u53d8\u5316\uff0c\u540c\u65f6\u77ac\u65f6\u76f8\u4f4d\u548c\u57fa\u5e26\u4fe1\u53f7\u7684\u79ef\u5206\u6210\u7ebf\u6027\u5173\u7cfb\u3002<\/p>\n\n\n\n<p>\u6211\u4eec\u8003\u8651\u57fa\u5e26\u4fe1\u53f7\u662f\u4e00\u4e2a\u5355\u97f3\u6b63\u5f26\/\u4f59\u5f26\u6ce2\u3002\u4e4b\u6240\u4ee5\u7814\u7a76\u6b63\u5f26\/\u4f59\u5f26\u6ce2\uff0c\u662f\u56e0\u4e3a\u6709\u4e2a\u53eb\u5085\u91cc\u53f6\u7684\u8001\u7237\u5b50\u544a\u8bc9\u6211\u4eec\uff0c\u901a\u4fe1\u4e2d\u5176\u4ed6\u57fa\u5e26\u4fe1\u53f7\u90fd\u53ef\u4ee5\u5199\u4f5c\u4e00\u7cfb\u5217\u6b63\u5f26\/\u4f59\u5f26\u6ce2\u7684\u7ec4\u5408\u3002\u8bbe\u57fa\u5e26\u4fe1\u53f7\u00a0<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.ingvs.com\/wp-content\/uploads\/2022\/04\/b7.png\" alt=\"[\u516c\u5f0f]\"\/><\/figure>\n\n\n\n<p>\u00a0\uff0c\u90a3\u4e48FM\u5df2\u8c03\u6ce2\u5c31\u53ef\u4ee5\u5199\u6210<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.ingvs.com\/wp-content\/uploads\/2022\/04\/b8.png\" alt=\"[\u516c\u5f0f]\"\/><\/figure>\n\n\n\n<p>\u540e\u4e00\u9879sin\u662f\u539f\u4fe1\u53f7\u4e2dcos\u5bf9\u65f6\u95f4\u7684\u79ef\u5206\uff0c\u79ef\u5206\u5e38\u6570\u5b9a\u4e3a0\u3002\u5b83\u662f\u4e00\u4e2a\u6b63\u5f26\u51fd\u6570\uff0c\u8c03\u5236\u6307\u6570\u4f5c\u4e3a\u5176\u6781\u503c\uff0c\u5f53\u7136\u662f\u6b63\u5f26\u51fd\u6570\u524d\u7684\u7cfb\u6570\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.ingvs.com\/wp-content\/uploads\/2022\/04\/b9.png\" alt=\"[\u516c\u5f0f]\"\/><\/figure>\n\n\n\n<p>\u6700\u5927\u9891\u504f<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.ingvs.com\/wp-content\/uploads\/2022\/04\/b10.png\" alt=\"[\u516c\u5f0f]\"\/><\/figure>\n\n\n\n<p>\u6ce8\u610f\u8c03\u9891\u6ce2(FM)\u7684\u6700\u5927\u9891\u504f\u548c\u57fa\u5e26\u4fe1\u53f7\u9891\u7387\u65e0\u5173\uff0c\u8c03\u5236\u6307\u6570(\u6700\u5927\u76f8\u79fb)\u4e0e\u57fa\u5e26\u4fe1\u53f7\u9891\u7387\u6210\u53cd\u6bd4\u3002\u5728\u4eca\u540e\u5bf9\u8c03\u76f8(PM)\u7684\u8ba8\u8bba\u4e2d\uff0c\u4f1a\u53d1\u73b0PM\u6ce2\u7684\u9891\u504f\u548c\u57fa\u5e26\u4fe1\u53f7\u9891\u7387\u6210\u6b63\u6bd4\uff0c\u800c\u8c03\u5236\u6307\u6570\u548c\u57fa\u5e26\u4fe1\u53f7\u9891\u7387\u65e0\u5173\u3002\u8fd9\u5bfc\u81f4FM\u6ce2\u7684\u9891\u8c31\u5bbd\u5ea6\u5bf9\u4e8e\u4e0d\u540c\u7684\u03a9\u51e0\u4e4e\u4e0d\u53d8\u3002<\/p>\n\n\n\n<p>\u7531\u4e8e\u901a\u4fe1\u4e2d\u7684\u57fa\u5e26\u4fe1\u53f7\u90fd\u5177\u6709\u6709\u9650\u7684\u5e26\u5bbd\uff0c\u5373 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height=\"23\"\/><\/figure>\n\n\n\n<p>\u00a0<\/p>\n\n\n\n<p>\u4e0b\u4e00\u4e2a\u91cd\u8981\u7684\u53c2\u6570\u662f\u8c03\u9891\u4fe1\u53f7\u5728\u5c04\u9891\u9891\u8c31\u4e2d\u5360\u7528\u7684<strong>\u5e26\u5bbd<\/strong>\u3002\u5f53\u643a\u5e26\u4fe1\u606f\u7684\u4e0d\u540c\u9891\u7387\u65e0\u7ebf\u7535\u4fe1\u53f7\u5728\u7a7a\u4e2d\u4f20\u8f93\u65f6\uff0c\u90fd\u8981\u5360\u636e\u4e00\u5b9a\u7684\u9891\u8c31\u8d44\u6e90\uff0c\u4fe1\u606f\u8bba\u7684\u521b\u7acb\u8005\u9999\u519c(Claude Elwood Shannon, 1916~2001)\u5728\u4ed6\u7684\u8bba\u6587\u4e2d\u7ed9\u51fa\u4e86\u4f20\u8f93\u6570\u636e\u7387\u3001\u4fe1\u9053\u4fe1\u566a\u6bd4\u548c\u5fc5\u8981\u4f20\u8f93\u5e26\u5bbd\u7684\u6570\u5b66\u5173\u7cfb\u3002\u8fdb\u884c\u901a\u4fe1\u65f6\uff0c\u6211\u4eec\u5fc5\u987b\u786e\u4fdd\u8fd9\u4e2a\u4fe1\u53f7\u6240\u5360\u7528\u7684\u5e26\u5bbd\u8303\u56f4\u5185\uff0c\u5b58\u5728\u7684\u5e72\u6270\u662f\u53ef\u63a5\u53d7\u7684\u2014\u2014\u5373\u4fe1\u566a\u6bd4\u8db3\u591f\u9ad8\u3002\u5e26\u5bbd\u8fd8\u51b3\u5b9a\u4e86\u9891\u7387\u4e0a\u76f8\u90bb\u4e24\u4e2a\u7535\u53f0\u4f7f\u7528\u9891\u7387\u6700\u5c0f\u7684\u95f4\u9694\u3002\u66f4\u91cd\u8981\u7684\uff0c\u4fe1\u53f7\u5e26\u5bbd\u8fd8\u76f4\u63a5\u51b3\u5b9a\u4e86\u63a5\u6536\u673a\u7535\u8def<strong>\u4e2d\u9891\u6ee4\u6ce2\u5668<\/strong>\u7684\u5e26\u5bbd\uff0c\u6839\u636e\u4e2d\u9891\u6ee4\u6ce2\u5668\u5e26\u5bbd\u7684\u8981\u6c42\uff0c\u9009\u62e9\u4e2d\u9891\u6ee4\u6ce2\u5668\u7684\u5b9e\u73b0\u65b9\u5f0f\uff1a\u53ef\u4ee5\u662f\u4e00\u4e2aLC\u69fd\u8def\uff08AM\u6536\u97f3\u673a\uff09\u3001\u4e00\u7ec4\u6676\u632f\uff08\u6536\u62a5\u673a\uff09\u3001\u4e00\u4e2a\u58f0\u8868\u9762\u6ee4\u6ce2\u5668\uff08\u7535\u89c6\u673a\uff09\u3001\u4e00\u4e2a\u9676\u74f7\u6ee4\u6ce2\u5668\uff08FM\u6536\u97f3\u673a\uff09\uff0c\u6216\u662f\u6570\u5b57\u5316\u7684\u540e\u7528\u6570\u5b57\u4fe1\u53f7\u5904\u7406\u6280\u672f(DSP)\u5b9e\u73b0\uff08\u9ad8\u7ea7\u6536\u97f3\u673a\u3001\u7535\u53f0\uff09\u3002\u4e2d\u9891\u6ee4\u6ce2\u5668\u7684\u7279\u6027\u76f4\u63a5\u5f71\u54cd\u63a5\u6536\u673a\u7684\u6027\u80fd\u3002\u6240\u4ee5\u4e86\u89e3\u4fe1\u53f7\u7684\u5e26\u5bbd\u5728\u901a\u4fe1\u4e2d\u81f3\u5173\u91cd\u8981\u3002\u90a3\u4e48FM\u4fe1\u53f7\u7684\u5e26\u5bbd\u7a76\u7adf\u662f\u591a\u5c11\uff1f<\/p>\n\n\n\n<p>\u5c06\u5e45\u503c\u5f52\u4e00\u5316\uff0c\u4f59\u5f26\u8c03\u5236\u7684FM\u6ce2<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.ingvs.com\/wp-content\/uploads\/2022\/04\/b12.png\" alt=\"[\u516c\u5f0f]\"\/><\/figure>\n\n\n\n<p>\u00a0\u7528\u548c\u89d2\u516c\u5f0f\u5c55\u5f00\uff0c\u5f97\u5230<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.ingvs.com\/wp-content\/uploads\/2022\/04\/b13.png\" alt=\"[\u516c\u5f0f]\"\/><\/figure>\n\n\n\n<p>\u6839\u636en\u9636\u7b2c\u4e00\u7c7b\u8d1d\u585e\u5c14\u51fd\u6570<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.ingvs.com\/wp-content\/uploads\/2022\/04\/b14.png\" alt=\"[\u516c\u5f0f]\"\/><\/figure>\n\n\n\n<p>\u00a0\uff0c\u6709<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.ingvs.com\/wp-content\/uploads\/2022\/04\/b15.png\" alt=\"[\u516c\u5f0f]\"\/><\/figure>\n\n\n\n<p>\u5e26\u5165\u539f\u5f0f\uff0c\u518d\u6b21\u5229\u7528\u4e09\u89d2\u51fd\u6570\u79ef\u5316\u548c\u5dee\u516c\u5f0f\uff0c\u6211\u4eec\u5c06FM\u4fe1\u53f7\u5206\u89e3\u4e3a\u4e00\u7cfb\u5217\u4f59\u5f26\u6ce2\u7684\u548c\uff0c\u5176\u5e45\u503c\u4e3a\u4ee5m\u4e3a\u53c2\u6570\u7684\u5404\u9636\u8d1d\u585e\u5c14\u51fd\u6570\u7684\u503c\uff0c\u9891\u7387\u4e3a\u4ee5\u8f7d\u6ce2\u9891\u7387\u4e3a\u4e2d\u5fc3\uff0c\u7684\u4e00\u7cfb\u5217\u8c31\u7ebf\u00a0<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.ingvs.com\/wp-content\/uploads\/2022\/04\/b16.png\" alt=\"[\u516c\u5f0f]\"\/><\/figure>\n\n\n\n<p>\u00a0,\u95f4\u9694\u662f\u8c03\u5236\u9891\u7387\u7684\u6574\u6570\u500d\u3002\u8c03\u5236\u6307\u6570m\u8d8a\u5927\uff0c\u8fb9\u9891\u5206\u91cf\u83b7\u5f97\u7684\u529f\u7387\u4e5f\u5c31\u8d8a\u5927\u3002\u5229\u7528\u8d1d\u585e\u5c14\u51fd\u6570\u96f6\u70b9\u7684\u4f4d\u7f6e\uff0c\u53ef\u4ee5\u53d1\u73b0\u5bf9\u4e8e\u7279\u5b9a\u7684m\uff0c\u53ef\u4ee5\u627e\u5230\u5e45\u503c\u4e3a\u96f6\u7684\u8fb9\u9891\uff0c\u8fd9\u4e00\u7279\u6027\u53ef\u7528\u4e8e\u6d4b\u91cf\u8c03\u5236\u6307\u6570\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.ingvs.com\/wp-content\/uploads\/2022\/04\/b17.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u8c03\u5236\u6307\u6570m=1\u65f6\uff0c\u5355\u97f3FM\u4fe1\u53f7\u7684\u9891\u8c31\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.ingvs.com\/wp-content\/uploads\/2022\/04\/b18.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u8c03\u5236\u6307\u6570m=10\u65f6\uff0c\u5355\u97f3FM\u4fe1\u53f7\u7684\u9891\u8c31\uff0c\u56fe\u7247\u6765\u81ea\u666e\u6e90\u6559\u80b2\uff0c\u6ce8\u610f\u5e45\u503c\u4e3a0\u7684\u8c31\u7ebf\u3002<\/p>\n\n\n\n<p>\u6570\u5b66\u516c\u5f0f\u628aFM\u4fe1\u53f7\u5c55\u6210\u65e0\u7a77\u7ea7\u6570\u7684\u548c\uff0c\u8868\u660e\u8c03\u9891\u4fe1\u53f7\u7684\u9891\u8c31\u662f\u65e0\u9650\u5bbd\u7684\u3002\u65e0\u9650\u5bbd\u9891\u8c31\u7684\u4fe1\u53f7\u65e0\u6cd5\u5728\u5de5\u7a0b\u4e0a\u8fd0\u7528\u2014\u2014\u9891\u8c31\u8d44\u6e90\u662f\u6709\u9650\u7684\uff0c\u8bbe\u5907\u5e26\u5bbd\u662f\u6709\u9650\u7684\u3002\u5e78\u597d\u8d1d\u585e\u5c14\u51fd\u6570\u7684\u6027\u8d28\u8fd8\u544a\u8bc9\u6211\u4eec\uff0c\u9ad8\u5230\u4e00\u5b9a\u6b21\u6570\u7684\u8fb9\u9891\u5206\u91cf\u7684\u632f\u5e45\u53ef\u4ee5\u5ffd\u7565\u4e0d\u8ba1\uff0c\u6ee4\u9664\u4ed6\u4eec\u4e0d\u4f1a\u6709\u663e\u8457\u7684\u5f71\u54cd\u3002\u4eba\u4e3a\u89c4\u5b9a\uff0c\u5c0f\u4e8e\u672a\u8c03\u5236\u8f7d\u6ce2\u5e45\u5ea61%\u621610%\u7684\u8fb9\u9891\u5ffd\u7565\u4e0d\u8ba1\uff0c\u4fdd\u7559\u4e0b\u6765\u6709\u9650\u7684\u8fb9\u9891\u5206\u91cf\u786e\u5b9a\u4e86FM\u4fe1\u53f7\u7684<strong>\u5e26\u5bbd<\/strong>\u3002<\/p>\n\n\n\n<p>\u4e0b\u9762\u8003\u5bdf\u8f93\u5165\u4fe1\u53f7\u4e0d\u662f\u5355\u97f3\u7684\u60c5\u51b5\u3002\u5229\u7528\u76f8\u540c\u7684\u6570\u5b66\u539f\u7406\uff0c\u6211\u4eec\u53d1\u73b0\uff0c\u8fb9\u9891\u5206\u91cf\u53d8\u4e3a\u57fa\u5e26\u4fe1\u53f7\u4e2d\u5404\u9891\u7387\u5206\u91cf\u7684\u7ebf\u6027\u7ec4\u5408\uff0c\u5e45\u503c\u53d8\u4e3a\u5404\u9636\u8d1d\u585e\u5c14\u51fd\u6570\u503c\u7684\u4e58\u79ef\u3002\u7531\u4e8e\u8d1d\u585e\u5c14\u51fd\u6570\u7684\u7edd\u5bf9\u503c\u5c0f\u4e8e1\uff0c\u9ad8\u9636\u5206\u91cf\u7684\u5e45\u503c\u8fc5\u901f\u8870\u51cf\uff0c\u6574\u4e2aFM\u4fe1\u53f7\u7684\u5e26\u5bbd\u8fd8\u96c6\u4e2d\u5728\u9760\u8fd1\u8f7d\u6ce2\u9891\u7387\u7684\u4e00\u5b9a\u8303\u56f4\u5185\u3002\u4f30\u7b97\u8fd9\u4e2a\u8303\u56f4\u7684\u8fd1\u4f3c\u516c\u5f0f\u79f0\u4e3aFM\u5e26\u5bbd\u7684<strong>\u5361\u68ee\u516c\u5f0f<\/strong>\uff1a\u00a0<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.ingvs.com\/wp-content\/uploads\/2022\/04\/b19.png\" alt=\"[\u516c\u5f0f]\"\/><\/figure>\n\n\n\n<p>\u5176\u4e2dm\u662f\u8c03\u5236\u6307\u6570\uff0c\u0394f\u662f\u4ee5Hz\u4e3a\u5355\u4f4d\u7684\u6700\u5927\u9891\u504f\uff0cBW\u662f\u4ee5Hz\u4e3a\u5355\u4f4d\u7684FM\u4fe1\u53f7\u5361\u68ee\u5e26\u5bbd\u3002\u8fd9\u4e2a\u516c\u5f0f\u662f\u5f53\u65f6AT&amp;T\u901a\u4fe1\u5de5\u7a0b\u5e08\u5361\u68ee(John Renshaw Carson , 1886~1940)\u57281922\u5e74\u63d0\u51fa\u7684\u3002<\/p>\n\n\n\n<p>\u5f53\u0394f\u8fdc\u5927\u4e8eF\u65f6\uff0cFM\u5e26\u5bbd\u4e3b\u8981\u7531\u0394f\u51b3\u5b9a\uff0c\u6b64\u65f6\u79f0\u4e3a\u5bbd\u5e26\u8c03\u9891(WFM)\uff0cFM\u5e7f\u64ad\u3001\u7535\u89c6\u4f34\u97f3\u90fd\u662fWFM\u3002\u536b\u661f\u901a\u4fe1\u7231\u597d\u8005\u559c\u6b22\u7684\u7f8e\u56fdNOAA\u6c14\u8c61\u536b\u661f\u4e5f\u662f\u4f7f\u7528WFM\u65b9\u5f0f\u5411\u5730\u9762\u4f20\u8f93\u536b\u661f\u4e91\u56fe\u7684\u3002\u5f53F\u5360\u4e3b\u5bfc\u5730\u4f4d\uff0cFM\u5e26\u5bbd\u8fd1\u4f3c\u4e8e2F\uff0c\u548c\u8c03\u5e45\u7684\u5e26\u5bbd\u7c7b\u4f3c\u3002\u8fd9\u65f6\u79f0\u4e3a\u7a84\u5e26\u8c03\u9891\u3002\u6a21\u62df\u5bf9\u8bb2\u673a\u3001\u77ed\u6ce2FM\u5bf9\u8bb2\u673a\uff08\u598210\u7c73\u6ce2\u6bb5\u6e14\u4e1a\u7535\u53f0\u3001\u66fe\u7ecf\u4e00\u5ea6\u98ce\u9761\u5168\u56fd\u7684F30-5\u5bf9\u8bb2\u673a\uff09\u7684\u4fe1\u53f7\u90fd\u8ba4\u4e3a\u662f\u7a84\u5e26\u8c03\u9891\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u51e0\u79cd\u5e38\u89c1\u7684FM\u5236\u5f0f<\/h2>\n\n\n\n<p>\u7ec8\u4e8e\u7ed3\u675f\u4e86\u590d\u6742\u7684\u6570\u5b66\u63a8\u5bfc\u3002\u4f46\u7814\u7a76\u8fd9\u4e9b\u7406\u8bba\u662f\u6709\u610f\u4e49\u7684\u3002\u56e0\u4e3a\u5728FM\u5236\u5f0f\u4e2d\uff0c\u5c31\u8981\u7528\u5230\u8fd9\u4e9b\u53c2\u6570\uff1a<\/p>\n\n\n\n<p>FM\u5355\u58f0\u9053\u5e7f\u64ad\uff1a\u8f7d\u6ce2\u9891\u738776~88MHz\uff0c88~108MHz\uff0c\u57fa\u5e26\u6700\u9ad8\u9891\u7387F=19kHz\uff0c\u8c03\u5236\u9891\u504f\u0394f=75kHz<\/p>\n\n\n\n<p>FM\u7acb\u4f53\u58f0\u5e7f\u64ad\uff1a\u57fa\u5e26\u6700\u9ad8\u9891\u7387F=53kHz\uff0c\u8c03\u5236\u9891\u504f\u0394f=75kHz<\/p>\n\n\n\n<p>\u67d0\u79cd\u5236\u5f0f\u7684\u7535\u89c6\u4f34\u97f3\uff1a\u4f34\u97f3\u4e2d\u98916.5MHz\uff0c\u57fa\u5e26\u6700\u5927\u9891\u7387F=15kHz\uff0c\u8c03\u5236\u9891\u504f\u0394f=50kHz<\/p>\n\n\n\n<p>\u6a21\u62df\u5bf9\u8bb2\u673a\u5bbd\u5e26\u6a21\u5f0f\uff1a\u57fa\u5e26\u6700\u5927\u9891\u7387F=2.4kHz\uff0c\u8c03\u5236\u9891\u504f\u0394f=5kHz<\/p>\n\n\n\n<p>\u6a21\u62df\u5bf9\u8bb2\u673a\u7a84\u5e26\u6a21\u5f0f\uff1a\u57fa\u5e26\u6700\u5927\u9891\u7387F=2.4kHz\uff0c\u8c03\u5236\u9891\u504f\u0394f=2.5kHz<\/p>\n\n\n\n<p><strong>\u4e60\u9898<\/strong><\/p>\n\n\n\n<p>\u8ba1\u7b97\u4e0a\u9762\u63d0\u5230\u7684\u51e0\u79cdFM\u5236\u5f0f\u7684\u4fe1\u53f7\u5e26\u5bbd\u3002\u5728\u4e92\u8054\u7f51\u4e0a\u641c\u7d22\u76ee\u524dFM\u5e7f\u64ad\u3001\u5bf9\u8bb2\u673a\u5bbd\u5e26\u3001\u5bf9\u8bb2\u673a\u7a84\u5e26\u89c4\u5b9a\u7684\u9891\u9053\u95f4\u9694\u662f\u591a\u5c11\uff0c\u5404\u81ea\u6bd4\u5361\u68ee\u5e26\u5bbd\u5927\u591a\u5c11\uff1f<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u63a5\u6536\u673a\u5e26\u5bbd\u4e0d\u5339\u914d\u7684\u5f71\u54cd<\/h2>\n\n\n\n<p>\u63a5\u6536\u673a\u4e2d\u9891\u5e26\u5bbd<strong>\u5927\u4e8e<\/strong>\u4fe1\u53f7\u5e26\u5bbd<\/p>\n\n\n\n<p>\u8003\u8651\u672c\u6587\u5f00\u5934\u63d0\u5230\u7684\u4f8b\u5b50\uff0c\u5f53\u8f93\u5165\u4fe1\u53f7\u7535\u5e73\u51cf\u5c11\u5230\u539f\u6765\u7684\u4e00\u534a\u65f6\uff0c\u5b9e\u9645\u4e0a\u6700\u5927\u9891\u504f\u4e5f\u51cf\u5c0f\u5230\u539f\u6765\u7684\u4e00\u534a\u3002\u6700\u7ec8\u7684FM\u5e26\u5bbd\u4e5f\u968f\u4e4b\u51cf\u5c0f\u3002\u8fd9\u8bf4\u660e\uff0c\u63a7\u5236\u57fa\u5e26\u4fe1\u53f7\u7684\u7535\u5e73\u53ef\u4ee5\u63a7\u5236FM\u4fe1\u53f7\u7684\u6700\u5927\u9891\u504f\uff0c\u8fd9\u4e5f\u662fFM\u7535\u8def\u8c03\u8bd5\u4e2d\u7684\u4e00\u4e2a\u6b65\u9aa4\u3002\u90a3\u4e48\uff0c\u7528\u5bbd\u5e26\u63a5\u6536\u673a\u63a5\u6536\u7a84\u5e26\u4fe1\u53f7\uff0c\u5c31\u53ef\u4ee5\u770b\u505a\u57fa\u5e26\u4fe1\u53f7\u8c03\u5236\u7535\u5e73\u4e0d\u8db3\u7684\u5bbd\u5e26\u4fe1\u53f7\uff0c\u5728\u63a5\u6536\u673a\u4e2d\u5c31\u8868\u73b0\u4e3a\u97f3\u91cf\u5c0f\u3002\u7528\u7535\u89c6\u4f34\u97f3\u6536\u97f3\u673a\u63a5\u6536\u6a21\u62df\u5bf9\u8bb2\u673a\u662f\u8fd9\u79cd\u60c5\u51b5\uff0c\u4f60\u53ef\u4ee5\u770b\u5230\u63a5\u6536\u673a\u6536\u5230\u5f88\u5f3a\u7684\u4fe1\u53f7\uff0c\u4f46\u97f3\u91cf\u5f88\u5c0f\uff0c\u751a\u81f3\u50cf\u6536\u5230\u4e00\u4e2a\u7a7a\u8f7d\u6ce2\u4e00\u6837\u3002<\/p>\n\n\n\n<p>\u5982\u679c\u591a\u4e2a\u7a84\u5e26\u4fe1\u53f7\u540c\u65f6\u843d\u8fdb\u4e86\u5bbd\u5e26\u63a5\u6536\u673a\u7684\u4e2d\u9891\u8303\u56f4\u4e4b\u5185\uff0c\u4f8b\u5982\u7528\u6ee4\u6ce2\u7279\u6027\u7cdf\u7cd5\u7684VHF\u65e0\u7ebf\u7535\u89c6\u63a5\u6536\u673a\uff0c\u8c03\u8c10\u5230FM\u5e7f\u64ad\u7684\u9891\u9053\uff0c\u4f60\u4f1a\u540c\u65f6\u6536\u5230\u591a\u4e2aFM\u7535\u53f0\u7684\u58f0\u97f3\u3002<\/p>\n\n\n\n<p>\u63a5\u6536\u673a\u4e2d\u9891\u5e26\u5bbd<strong>\u5c0f\u4e8e<\/strong>\u4fe1\u53f7\u5e26\u5bbd<\/p>\n\n\n\n<p>\u4f7f\u7528\u5bf9\u8bb2\u673a\u63a5\u6536UHF\u4e0a\u7684\u7535\u89c6\u4f34\u97f3\u5c31\u662f\u8fd9\u79cd\u60c5\u51b5\u3002\u6b64\u65f6\uff0c\u53ea\u6709\u57fa\u5e26\u4fe1\u53f7\u4e2d\u7535\u5e73\u8f83\u4f4e\u7684\u90e8\u5206\u624d\u80fd\u88ab\u88ab\u6b63\u786e\u89e3\u8c03\uff0c\u5982\u7535\u89c6\u8282\u76ee\u7684\u80cc\u666f\u97f3\u4e50\uff1b\u800c\u9891\u504f\u8d85\u8fc7\u4e2d\u9891\u5e26\u5bbd\u7684\u90e8\u5206\u65e0\u6cd5\u8fdb\u5165\u63a5\u6536\u673a\uff0c\u6536\u5230\u7684\u4fe1\u53f7\u51fa\u73b0\u4e86\u7c7b\u4f3c\u9971\u548c\u5931\u771f\u7684\u7279\u6027\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">FM\u5e7f\u64ad\u590d\u5408\u8c03\u5236\u5236\u5f0f<\/h2>\n\n\n\n<p>\u5728FM\u5e7f\u64ad\u7684\u57fa\u5e26\u4fe1\u53f7\u590d\u5408\u8c03\u5236\u5176\u4ed6\u4fe1\u606f\uff0c\u53ef\u4ee5\u6269\u5c55FM\u5e7f\u64ad\u7684\u7528\u9014\u3002\u5728\u963f\u59c6\u65af\u7279\u6717\u53d1\u660eFM\u7684\u65f6\u5019\uff0c\u4ed6\u5c31\u5728\u81ea\u5df1\u7684\u5b9e\u9a8c\u7535\u53f0\uff08\u4e1a\u4f59\u7535\u53f0\u5728\u5f53\u65f6\u7684\u79f0\u547c\uff09\u4e0a\u8fdb\u884c\u4e86\u5229\u7528FM\u526f\u8f7d\u6ce2\u4f20\u8bf4\u5176\u4ed6\u4fe1\u606f\u7684\u5c1d\u8bd5\u3002<\/p>\n\n\n\n<p>\u5404\u79cd\u9644\u52a0\u4fe1\u606f\u4f20\u8f93\u4e2d\uff0c\u5176\u4e2d\u73b0\u5728\u6700\u5e38\u89c1\u7684\u3001\u5f62\u6210\u6807\u51c6\u3001\u6709\u4fbf\u5b9c\u7684\u5546\u7528\u89e3\u7801\u82af\u7247\u7684\u590d\u5408\u8c03\u5236\u5236\u5f0f\u5c31\u662f\u8c03\u9891\uff08\u53cc\u58f0\u9053\uff09\u7acb\u4f53\u58f0\u3002<\/p>\n\n\n\n<p>\u6b64\u5916\uff0c\u8fd8\u6709\u8bb8\u591a\u5e94\u7528\u8303\u56f4\u8f83\u5c0f\u7684\u4e0d\u540c\u590d\u5408\u8c03\u5236\u5236\u5f0f\u3002\u4ed6\u4eec\u7684\u5171\u540c\u4e4b\u5904\u662f\u57fa\u5e26\u4fe1\u53f7\u5f97\u5230\u4f4e15kHz\u4e00\u5b9a\u4fdd\u7559\u7ed9\u5e7f\u64ad\u97f3\u9891\u4fe1\u53f7\uff0c\u4ee5\u517c\u5bb9\u4f20\u7edf\u7684FM\u6536\u97f3\u673a\uff0c\u7136\u540e\u5728\u57fa\u5e26\u4fe1\u53f719kHz\u4ee5\u4e0a\u7684\u9891\u8c31\u4e0a\u5927\u505a\u6587\u7ae0\uff0c\u4f20\u8f93\u4e0d\u540c\u7684\u6570\u636e\u3002<\/p>\n\n\n\n<p>\u9996\u5148\u6765\u770b\u5e7f\u6cdb\u5e94\u7528\u7684FM\u7acb\u4f53\u58f0\uff0c\u7136\u540e\u518d\u7b80\u8981\u4ecb\u7ecd\u4e00\u4e0b\u4e16\u754c\u5404\u5730\u5404\u5f0f\u5404\u6837\u7684\u590d\u5408\u8c03\u5236\u5236\u5f0f\u3002<\/p>\n\n\n\n<p><strong>\u8c03\u9891\u7acb\u4f53\u58f0<\/strong><\/p>\n\n\n\n<p>1958\u5e74\uff0c\u7f8e\u56fd\u5de5\u7a0b\u5e08\u5170\u7eb3\u5fb7\u00b7\u5eb7\u53d1\u660e\u4e86\u8c03\u9891\u7acb\u4f53\u58f0\u5e7f\u64ad\u3002\u7b2c\u4e8c\u5e74\uff0c\u7f8e\u56fd\u5546\u7528\u7535\u53f0\u5f00\u59cb\u4e86\u7acb\u4f53\u58f0\u5e7f\u64ad\u3002\u6211\u56fd\u7684\u8c03\u9891\u7acb\u4f53\u58f0\u5e7f\u64ad\u8bde\u751f\u4e8e1980\u5e74\u3002\u8c03\u9891\u7acb\u4f53\u58f0\u5728\u6b64\u540e\u5f88\u957f\u4e00\u6bb5\u65f6\u95f4\u4e2d\u90fd\u662f\u5927\u4f17\u80fd\u83b7\u5f97\u7684\u6700\u597d\u7684\u9ad8\u4fdd\u771f\u97f3\u6e90\u3002<\/p>\n\n\n\n<p>\u8c03\u9891\u7acb\u4f53\u58f0\u5e7f\u64ad\u662f\u517c\u5bb9FM\u5355\u58f0\u9053\u5e7f\u64ad\u7684\u590d\u5408\u8c03\u5236\u5236\u5f0f\uff0c\u5355\u58f0\u9053\u6536\u97f3\u673a\u63a5\u6536\u7acb\u4f53\u58f0\u5e7f\u64ad\u4fe1\u53f7\u65f6\uff0c\u89e3\u8c03\u7684\u97f3\u9891\u662f\u5de6\u53f3\u4e24\u58f0\u9053\u7684\u548c\u4fe1\u53f7L+R\u3002\u5f53\u4fe1\u566a\u6bd4\u4e0d\u4f73\u65f6\uff0c\u7acb\u4f53\u58f0\u6536\u97f3\u673a\u4e5f\u53ef\u4ee5\u5173\u95ed\u7acb\u4f53\u58f0\u529f\u80fd\uff0c\u51cf\u5c11\u6742\u97f3\u3002\u4e4b\u6240\u4ee5\u5173\u95ed\u7acb\u4f53\u58f0\u53ef\u51cf\u5c11\u6742\u97f3\uff0c\u548cFM\u566a\u58f0\u8c31\u5bc6\u5ea6\u7684\u5206\u5e03\u6709\u5173\uff0c\u57fa\u5e26\u4fe1\u53f7\u4e2d\u9891\u7387\u8f83\u9ad8\u7684\u90e8\u5206\uff0c\u53d7\u566a\u58f0\u7684\u5f71\u54cd\u66f4\u52a0\u4e25\u91cd\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.ingvs.com\/wp-content\/uploads\/2022\/04\/b20.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.ingvs.com\/wp-content\/uploads\/2022\/04\/b21.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u7acb\u4f53\u58f0\u4fe1\u53f7\u7684\u4e24\u4e2a\u58f0\u9053\uff0c\u76f8\u52a0\u5f97\u5230\u548c\u4fe1\u9053L+R\uff0c\u76f8\u51cf\u5f97\u5230\u5dee\u4fe1\u9053L-R\u3002<\/p>\n\n\n\n<p>\u5176\u4e2dL+R\u4fe1\u53f7\u5360\u636e\u57fa\u5e26\u4fe1\u53f7\u76840~15kHz\u7684\u5e26\u5bbd\u3002\u5728\u57fa\u5e26\u4fe1\u53f719kHz\u5904\u63d2\u5165\u4e00\u4e2a\u6b63\u5f26\u5bfc\u9891\uff0c\u4ee5\u4fbf\u63a5\u6536\u673a\u500d\u9891\u6062\u590d38kHz\u7684\u526f\u8f7d\u6ce2\u3002L-R\u4fe1\u53f7\u901a\u8fc7\u6291\u5236\u8f7d\u6ce2\u8c03\u5e45\u8c03\u5236\u572838kHz\u7684\u526f\u8f7d\u6ce2\u4e0a\uff0c\u5360\u636e23~53kHz\u7684\u5e26\u5bbd\u3002\u6700\u540e\uff0cL+R\u3001\u5bfc\u9891\u3001L-R\u4fe1\u53f7\u5171\u540c\u4f5c\u4e3a53kHz\u5e26\u5bbd\u7684\u57fa\u5e26\u4fe1\u53f7\uff0c\u901a\u8fc7FM\u8c03\u5236\u53d1\u9001\u51fa\u53bb\u3002\u5176\u4e2d\u9884\u52a0\u91cd\u548c\u53bb\u52a0\u91cd\u6280\u672f\u7528\u4e8e\u51cf\u5c0f\u566a\u58f0\u7684\u5f71\u54cd\uff0c\u539f\u7406\u53e6\u6587\u8ba8\u8bba\u3002<\/p>\n\n\n\n<p>\u5728RF\u4fe1\u53f7\u7684\u9891\u9891\u8c31\u7011\u5e03\u56fe\u4e0a\uff0c\u7acb\u4f53\u58f0FM\u4fe1\u53f7\u7684\u8f7d\u6ce2\u4e24\u8fb9\u53ef\u4ee5\u770b\u5230\u8fde\u7eed\u768419kHz\u5bfc\u9891\u7684\u8c31\u7ebf\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.ingvs.com\/wp-content\/uploads\/2022\/04\/b22.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u9664\u4e86\u5e38\u89c1\u7684\u53cc\u58f0\u9053\u7acb\u4f53\u58f0\u8c03\u9891\u5e7f\u64ad\uff0c\u8fd8\u6709\u5f88\u591a\u4e0d\u5e38\u89c1\u7684FM\u590d\u5408\u8c03\u5236\u5236\u5f0f\u3002\u53ef\u80fd\u4ec5\u5728\u67d0\u4e9b\u56fd\u5bb6\u6216\u67d0\u4e9b\u5e7f\u64ad\u516c\u53f8\u4f7f\u7528\u3002\u4ee5\u4e0b\u5185\u5bb9\u591a\u6765\u81ea\u7f51\u7edc\uff0c\u6211\u65e0\u6cd5\u9a8c\u8bc1\u5176\u4e2d\u6280\u672f\u4fe1\u606f\u7684\u51c6\u786e\u6027\u3002<\/p>\n\n\n\n<p><strong>\u56db\u58f0\u9053\u8c03\u9891(\u73af\u7ed5)\u7acb\u4f53\u58f0<\/strong><\/p>\n\n\n\n<p>1970\u5e74\u4ee3\uff0c\u7f8e\u56fd\u97f3\u9891\u5de5\u7a0b\u5e08\u8def\u6613\u65af\u00b7\u9053\u6587(Louis Dorren, 1948~2014 ?)\u5c1d\u8bd5\u4e86\u56db\u58f0\u9053FM\u5e7f\u64ad\u3002\u9053\u6587\u53d1\u660e\u7684\u56db\u58f0\u9053\u590d\u7528\u6280\u672f\u81f3\u4eca\u4ecd\u5728\u5f71\u54cd\u97f3\u54cd\u8bbe\u5907\u7cfb\u7edf\uff0c\u4f46\u56db\u58f0\u9053\u7acb\u4f53\u58f0FM\u5e7f\u64ad\u5e76\u6ca1\u6709\u6ca1\u6709\u5f88\u597d\u5730\u5546\u7528\u3002<\/p>\n\n\n\n<p>\u56db\u58f0\u9053\u7cfb\u7edf\u4e2d\uff0c\u7528\u5de6\u524d\u3001\u5de6\u540e\u3001\u53f3\u524d\u3001\u53f3\u540e\u63cf\u8ff0\u56db\u4e2a\u58f0\u9053\uff0c\u8bb0\u4f5cLF\u3001LR\u3001RF\u548cRR\u3002\u73b0\u5728\u66f4\u5e38\u89c1\u76845.1\u58f0\u9053\u7cfb\u7edf\u5c31\u662f\u5728\u56db\u58f0\u9053\u57fa\u7840\u4e0a\u589e\u52a0\u4e86\u4e2d\u592e\u58f0\u9053M\uff0c\u800c\u591a\u51fa\u6765\u76840.1\u8868\u793a\u7684\u91cd\u4f4e\u97f3\u3002\u9053\u6587\u7684\u4e13\u5229\u4e2d\u8fd9\u6837\u63cf\u8ff0\u4e86\u56db\u58f0\u9053\u7acb\u4f53\u58f0FM\u5e7f\u64ad\uff0c\u4f7f\u7528\u4e8638kHz\u548c76kHz\u4e24\u4e2a\u5b50\u8f7d\u6ce2\uff0c\u8fd9\u79cd\u56db\u58f0\u9053\u4fe1\u53f7\u4f53\u5236\u53ef\u4ee5\u517c\u5bb9\u5355\u58f0\u9053\u63a5\u6536\u673a\u548c\u666e\u901a\u53cc\u58f0\u9053\u7acb\u4f53\u58f0\u63a5\u6536\u673a\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.ingvs.com\/wp-content\/uploads\/2022\/04\/b23.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p><strong>\u57fa\u5e26\u526f\u8f7d\u6ce2\u6570\u636e\u4f20\u8f93<\/strong><\/p>\n\n\n\n<p>\u5728\u6bd4L-R\u4fe1\u53f7\u66f4\u9ad8\u7684\u9891\u6bb5\uff0c\u5de5\u7a0b\u5e08\u5f00\u53d1\u4e86\u591a\u79cd\u5229\u7528\u5b50\u8f7d\u6ce2\/\u526f\u8f7d\u6ce2\u7684\u6570\u636e\u4f20\u8f93\u6a21\u5f0f\u3002\u5317\u7f8e\u7684RDS(Radio Data System)\u548cRBDS(Radio Broadcase Data System)\u572857kHz\u7684\u526f\u8f7d\u6ce2\u4e0a\u4f7f\u75282PSK\u8c03\u52361187.5bps\u7684\u6570\u636e\uff0c\u5360\u636e\u5927\u7ea64kHz\u7684\u5e26\u5bbd\u3002\u6b64\u5916\u5728DARC\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u752867kHz\u548c92kHz\u7684\u526f\u8f7d\u6ce2\u3002\u6700\u9ad8\u57fa\u5e26\u4fe1\u53f7\u7684\u9891\u7387\u4e3a99kHz\uff0cFCC\u8981\u6c42\u6b64\u65f6FM\u6700\u5927\u9891\u504f\u589e\u52a0\u523082.5kHz(75kHz\u6807\u51c6\u9891\u504f\u7684110%)\u3002<\/p>\n\n\n\n<p>\u4f20\u8f93\u7684\u6570\u636e\u5185\u5bb9\u5305\u62ec\u7535\u53f0\u4fe1\u606f\u3001\u8282\u76ee\u4fe1\u606f\u3001\u8282\u76ee\u8868\u3001\u4ea4\u901a\u4fe1\u606f\u3001\u7d27\u6025\u5e7f\u64ad\u7b49\u7b49\uff0c\u5728\u6b27\u7f8e\u5730\u533a\uff0c\u6709\u51e0\u79cd\u4e0d\u540c\u7684\u6570\u636e\u5e7f\u64ad\u5e27\u683c\u5f0f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.ingvs.com\/wp-content\/uploads\/2022\/04\/b24.png\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.ingvs.com\/wp-content\/uploads\/2022\/04\/b25.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u9891\u8c31\u7011\u5e03\u56fe\u5c55\u793a\u4e86\u4e00\u4e2aFM\u5e7f\u64ad\u7684\u590d\u5408\u57fa\u5e26\u4fe1\u53f7\uff1a\u4ece\u5de6\u5230\u53f3\u5206\u522b\u5c55\u793a\u4e86 L+R\u300119kHz\u5bfc\u9891\u3001\u4e2d\u5fc3\u4f4d\u4e8e38kHz\u7684\u6291\u5236\u8f7d\u6ce2\u53cc\u8fb9\u5e26\u8c03\u5e45\u7684L-R\u3001\u4e2d\u5fc3\u4f4d\u4e8e57kHz\u7684RBDS\u7684PSK\u4fe1\u53f7\u3001\u4ee5\u53ca67kHz\u5904\u7684\u526f\u8f7d\u6ce2\uff08\u9891\u8c31\u770b\u8d77\u6765\u50cf\u4e00\u4e2a\u4fdd\u7559\u8f7d\u6ce2\u7684\u5355\u8fb9\u5e26\u4fe1\u53f7\uff09\u3002<\/p>\n\n\n\n<p><strong>\u6570\u5b57\u5316\u7684\u8fc7\u6e21\u65b9\u6848<\/strong><\/p>\n\n\n\n<p>\u76ee\u524d\u5e7f\u64ad\u5728\u671d\u7740\u6570\u5b57\u5316\u65b9\u5411\u53d1\u5c55\u3002\u5546\u7528\u7684\u6570\u5b57\u5316\u5e7f\u64ad\u51e0\u4e4e\u90fd\u91c7\u7528\u5177\u6709\u77e9\u5f62\u9891\u8c31\u5f62\u72b6\u7684OFDM\u8c03\u5236\uff0c\u5982DRM\u6280\u672f\uff08\u6ce8\u610f\u4e0d\u662f\u6570\u5b57\u5bf9\u8bb2\u673a\u4f7f\u7528\u7684DMR\uff09\u3002HD-Radio\u662f\u4e00\u79cd\u6a21\u62df\u5230\u6570\u5b57\u7684\u8fc7\u6e21\u65b9\u6848\uff0c\u5728FM\u6a21\u62df\u4fe1\u53f7\u9891\u8c31\u7684\u4e24\u7aef\uff0c\u5229\u7528OFDM\u540c\u6b65\u4f20\u8f93\u6570\u5b57\u5e7f\u64ad\u4fe1\u53f7\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.ingvs.com\/wp-content\/uploads\/2022\/04\/b26.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p>HD-Radio \u6a21\u62dfFM\u9891\u8c31\u4e24\u4fa7\u7684OFDM\u6570\u5b57\u4fe1\u53f7\u3002\u8fd9\u79cd\u4fe1\u53f7\u517c\u5bb9\u6a21\u62dfFM\u63a5\u6536\u673a\uff0c\u540c\u65f6\u4e5f\u4f20\u8f93\u6570\u5b57\u5e7f\u64ad\u4fe1\u53f7\uff0c\u53ef\u7528\u4e8e\u5411\u6570\u5b57\u5e7f\u64ad\u8fc7\u6e21\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.ingvs.com\/wp-content\/uploads\/2022\/04\/b27.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u5728\u4e2d\u56fd\uff0c\u4e5f\u5df2\u7ecf\u6709\u62a5\u9053\u8bf4\u6536\u5230\u4e86\u7c7b\u4f3c\u7684\u4fe1\u53f7\u3002\u7ecf\u786e\u8ba4\u662f\u4e2d\u592e\u5e7f\u64ad\u7535\u89c6\u8986\u76d6\u6570\u5b57\u5316\u5de5\u7a0b\u5efa\u8bbe\u5f00\u64ad\u7684CDR (China Digital Radio) 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class=\"home-blog-btn\">\u9605\u8bfb\u66f4\u591a<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-246","post","type-post","status-publish","format-standard","hentry","category-electronics"],"_links":{"self":[{"href":"https:\/\/www.ingvs.com\/index.php\/wp-json\/wp\/v2\/posts\/246","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ingvs.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ingvs.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ingvs.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ingvs.com\/index.php\/wp-json\/wp\/v2\/comments?post=246"}],"version-history":[{"count":0,"href":"https:\/\/www.ingvs.com\/index.php\/wp-json\/wp\/v2\/posts\/246\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.ingvs.com\/index.php\/wp-json\/wp\/v2\/media?parent=246"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ingvs.com\/index.php\/wp-json\/wp\/v2\/categories?post=246"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ingvs.com\/index.php\/wp-json\/wp\/v2\/tags?post=246"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}