{"id":2422,"date":"2012-04-13T21:32:00","date_gmt":"2012-04-13T13:32:00","guid":{"rendered":"http:\/\/www.liuwenhao.me\/?p=2422"},"modified":"2021-11-26T12:38:04","modified_gmt":"2021-11-26T04:38:04","slug":"%e6%88%91%e7%9a%84%e4%bd%9c%e5%93%81%e7%b3%bb%e5%88%9705%e6%83%b3%e5%94%b1%e5%b0%b1%e5%94%b1-2","status":"publish","type":"post","link":"https:\/\/www.liuwenhao.me\/?p=2422","title":{"rendered":"[\u6211\u7684\u4f5c\u54c1\u7cfb\u521705]\u60f3\u5531\u5c31\u5531"},"content":{"rendered":"<div id=\"toc_container\" class=\"no_bullets\"><p class=\"toc_title\">\u5bfc\u822a\u76ee\u5f55<\/p><ul class=\"toc_list\"><li><a href=\"#i\">\u6458\u8981<\/a><\/li><li><a href=\"#i-2\">\u4e00\u3001\u80cc\u666f\u5206\u6790<\/a><\/li><li><a href=\"#i-3\">\u4e8c\u3001\u7cfb\u7edf\u65b9\u6848<\/a><ul><li><a href=\"#1\">1 \u7cfb\u7edf\u67b6\u6784\u5206\u6790<\/a><\/li><li><a href=\"#2\">2 \u7cfb\u7edf\u7ed3\u6784\u56fe<\/a><\/li><\/ul><\/li><li><a href=\"#i-4\">\u4e09\u3001\u5173\u952e\u6a21\u5757\u5206\u6790<\/a><ul><li><a href=\"#1-2\">1 \u58f0\u97f3\u91c7\u96c6\u4e0e\u5904\u7406\u90e8\u5206<\/a><\/li><li><a href=\"#2-2\">2 \u8f6f\u4ef6\u8bbe\u8ba1<\/a><ul><li><a href=\"#nbsp_21\">&nbsp; 2.1 \u8f6f\u4ef6\u67b6\u6784<\/a><\/li><li><a href=\"#nbsp_22\">&nbsp; 2.2 \u8f6f\u4ef6\u67b6\u6784\u5206\u6790<\/a><\/li><\/ul><\/li><li><a href=\"#3\">3 \u8bed\u97f3\u8bc6\u522b<\/a><ul><li><a href=\"#nbsp_31\">&nbsp; 3.1 \u8bed\u97f3\u8bc6\u522b\u6d41\u7a0b\u56fe<\/a><\/li><li><a href=\"#nbsp_32\">&nbsp; 3.2 \u8bed\u97f3\u8bc6\u522b\u8fc7\u7a0b\u5206\u6790<\/a><\/li><\/ul><\/li><\/ul><\/li><li><a href=\"#i-5\">\u56db\u3001\u8f6f\u4ef6\u6d41\u7a0b\u5206\u6790<\/a><ul><li><a href=\"#1-3\">1 \u8f6f\u4ef6\u6d41\u7a0b\u5206\u6790<\/a><\/li><li><a href=\"#2-3\">2 \u8f6f\u4ef6\u6d41\u7a0b\u56fe<\/a><\/li><\/ul><\/li><li><a href=\"#i-6\">\u4e94\u3001\u6d4b\u8bd5\u65b9\u6cd5\u4e0e\u6d4b\u8bd5\u7ed3\u679c<\/a><ul><li><a href=\"#1-4\">1 \u6d4b\u8bd5\u65b9\u6848\u4e0e\u6d4b\u8bd5\u6761\u4ef6<\/a><\/li><li><a href=\"#2-4\">2 \u6d4b\u8bd5\u7ed3\u679c\u4e0e\u6570\u636e<\/a><ul><li><a href=\"#nbsp_21-2\">&nbsp; 2.1 \u5916\u90e8\u58f0\u97f3\u89e6\u53d1\u6d4b\u8bd5<\/a><\/li><li><a href=\"#nbsp_22_SD\">&nbsp; 2.2 SD\u5361\u8bc6\u522b\u4e0e\u7d22\u5f15\u5efa\u7acb\u65f6\u95f4\u6d4b\u8bd5<\/a><\/li><li><a href=\"#nbsp_23\">&nbsp; 2.3 \u8bed\u8c03\u8bc6\u522b\u6548\u679c\u5206\u6790<\/a><\/li><\/ul><\/li><li><a href=\"#3-2\">3 \u8bef\u5dee\u5206\u6790<\/a><\/li><\/ul><\/li><li><a href=\"#i-7\">\u53c2\u8003\u6587\u732e<\/a><\/li><\/ul><\/div>\n<h1><span id=\"i\"><b>\u6458\u8981<\/b><\/span><\/h1>\n<p>&nbsp;&nbsp;&nbsp; \u968f\u7740\u4eba\u4eec\u751f\u6d3b\u6c34\u5e73\u7684\u63d0\u9ad8\uff0c\u542c\u6b4c\u3001\u5531\u6b4c\u5df2\u7ecf\u6210\u4e3a\u4e00\u4e9b\u4eba\u65e5\u5e38\u751f\u6d3b\u4e2d\u4e0d\u53ef\u7f3a\u5c11\u7684\u4e00\u90e8\u5206\u3002\u7136\u800c\u73b0\u5728\u7684MP3\u64ad\u653e\u5668\u3001KTV\u6b4c\u5385\u91cc\u7684\u70b9\u6b4c\u7cfb\u7edf\u90fd\u5b58\u5728\u627e\u6b4c\u65f6\u9700\u8981\u5728\u6d69\u701a\u7684\u6b4c\u66f2\u5e93\u4e2d\u82e6\u82e6\u641c\u7d22\u3001\u5fd8\u8bb0\u6b4c\u540d\u5b57\u65f6\u5c31\u4e0d\u80fd\u70b9\u6b4c\u3001\u5373\u5174\u6f14\u5531\u65f6\u5c31\u53ea\u80fd\u6e05\u5531\u7b49\u7f3a\u70b9\u3002\u201c\u60f3\u5531\u5c31\u5531\u201d\u5c31\u662f\u4e13\u95e8\u9488\u5bf9\u8fd9\u4e2a\u95ee\u9898\u7684\u4e00\u4e2a\u901a\u8fc7\u7279\u5f81\u7801\u4ee5\u53ca\u6b4c\u8bcd\u5185\u5bb9\u8bc6\u522b\u51fa\u6f14\u5531\u8005\u6f14\u5531\u54ea\u4e00\u9996\u6b4c\u66f2\u7684\u667a\u80fd\u70b9\u6b4c\u7cfb\u7edf\u3002\u5b83\u4ee5\u7c7b\u4f3c\u641c\u7d22\u5f15\u64ce\u5efa\u7acb\u7d22\u5f15\u7684\u65b9\u5f0f\uff0c\u4ee5BF533\u4e3a\u6838\u5fc3\u5904\u7406\u5668\uff0c\u901a\u8fc7\u7279\u5f81\u7801\u63d0\u53d6\u4e0e\u5339\u914d\u3001\u6b4c\u8bcd\u8bc6\u522b\u3001\u6f14\u5531\u8fdb\u5ea6\u8ddf\u8e2a\u7b49\u624b\u6bb5\uff0c\u5b9e\u73b0\u5f53\u6f14\u5531\u8005\u6e05\u5531\u6570\u79d2\u4e4b\u540e\u4f34\u594f\u968f\u4e4b\u54cd\u8d77\u7684\u6548\u679c\u3002\u8bed\u97f3\u8bc6\u522b\u91c7\u7528\u7a33\u5b9a\u5c0f\u6ce2\u6ee4\u9664\u6765\u53bb\u9664\u73af\u5883\u566a\u97f3\u3001\u57fa\u4e8e\u58f0\u5f3a\u68c0\u6d4b\u7684\u8bed\u97f3\u59cb\u7ec8\u70b9\u68c0\u6d4b\u3001\u6f14\u5531\u7279\u5f81\u503c\u63d0\u53d6\u7b49\u6280\u672f\u6765\u4fdd\u8bc1\u6b4c\u66f2\u7684\u8bc6\u522b\u7684\u51c6\u786e\u9ad8\u6548\u6027\u3002\u540c\u65f6\u6f14\u5531\u8fc7\u7a0b\u4e2d\u7cfb\u7edf\u8fd8\u53ef\u4ee5\u5bf9\u6f14\u5531\u8005\u8fdb\u884c\u667a\u80fd\u8bc4\u5206\u3002\u672c\u7cfb\u7edf\u53ef\u4ee5\u5e7f\u6cdb\u7684\u5e94\u7528\u5728KTV\u6b4c\u5385\u3001\u968f\u8eabMP3\u3001MP4\u64ad\u653e\u5668\u3001\u6b4c\u66f2\u6bd4\u8d5b\u73b0\u573a\u7b49\u573a\u5408\uff0c\u5177\u6709\u5e7f\u6cdb\u7684\u5e94\u7528\u524d\u666f\u3002<\/p>\n<p><b>Abstract<\/b><b>\uff1a<\/b><\/p>\n<p>&nbsp;&nbsp;&nbsp; With the improvement of living standards of people, listening to music and singing has become an indispensable part of some people&#8217;s daily life. The inconvenience of looking for the right song in vast sources does exist in the ordering system of MP3 players or KTV karaoke, not to mention when you forget the song name or the interest of showing something special comes to you in uncertain times. &#8220;To Sing As You Want&#8221; is invented to solve this problem, which identifies the song wanted according to its signature or lyrics. Some like establishing of indexes of searching engines, through the extraction and matching of the signature, identification of the song, tracking of the process, using BF533 as the core processor, the system will provide the accompaniment a few seconds after the singer starts. With the use of stable Band-pass filter to get rid of surrounding noises, the process tracking based on the detection of sound intensity, the technique of extracting singing features, voice recognition can guarantee accuracy and efficiency of identifying the songs. In the process of the performance, the system can give an intelligent score. The system can be widely used in the KTV bars , portable MP3 or MP4 players, scenes of singing competition and so on, which has a promising application prospect.<\/p>\n<p><!--more--><\/p>\n<h1><span id=\"i-2\">\u4e00\u3001\u80cc\u666f\u5206\u6790<\/span><\/h1>\n<p>&nbsp;&nbsp;&nbsp; \u968f\u7740\u7ecf\u6d4e\u7684\u53d1\u5c55\uff0c\u4eba\u4eec\u8d8a\u6765\u8d8a\u6ce8\u91cd\u7cbe\u795e\u6587\u5316\u751f\u6d3b\u4e0a\u7684\u4eab\u53d7\u3002\u6211\u4eec\u770b\u5230\uff0c\u5f88\u591a\u4eba\u5728\u665a\u996d\u540e\u3001\u4e0e\u670b\u53cb\u805a\u9910\u540e\u3001\u4eb2\u4eba\u56e2\u805a\u540e\u5f80\u5f80\u9009\u62e9\u53bbKTV\u5305\u95f4\u91ccK\u6b4c\u7684\u65b9\u5f0f\u6765\u5ea6\u8fc7\u90a3\u4e00\u6bb5\u7f8e\u597d\u65f6\u5149\u3002\u6211\u4eec\u53d1\u73b0\uff0cKTV\u6b4c\u5385\u91cc\u7684\u70b9\u6b4c\u7cfb\u7edf\u5b58\u5728\u5f88\u591a\u7684\u4e0d\u4fbf\u4e4b\u5904\uff0c\u6bd4\u5982\u8bf4\u5531\u6b4c\u4e4b\u524d\u8fd8\u8981\u5148\u5728\u6d69\u5927\u7684\u6b4c\u66f2\u5e93\u4e2d\u8d39\u65f6\u8d39\u529b\u7684\u6d4f\u89c8\u624d\u80fd\u627e\u5230\u81ea\u5df1\u60f3\u8981\u5531\u7684\u6b4c\u66f2\u3001\u5f53\u4e00\u65f6\u5fd8\u8bb0\u6b4c\u66f2\u540d\u79f0\u7684\u65f6\u5019\u5c31\u96be\u4ee5\u627e\u5230\u6b4c\u66f2\u3001\u6b4c\u66f2\u5e93\u867d\u7136\u6d69\u5927\u4f46\u662f\u4ecd\u7136\u6ca1\u6709\u81ea\u5df1\u60f3\u8981\u5531\u7684\u6b4c\u66f2\u3001\u9700\u8981\u5728PC\u673a\u4e0a\u8fd0\u884c\u70b9\u6b4c\u7a0b\u5e8f\u9020\u6210\u6210\u672c\u8fc7\u9ad8\u7b49\u3002\u8fd9\u5c31\u9700\u8981\u4e00\u53f0\u80fd\u5728\u4eba\u4eec\u5f00\u59cb\u54fc\u51e0\u53e5\u4e4b\u540e\u4f34\u594f\u968f\u4e4b\u54cd\u8d77\u7684\u5d4c\u5165\u5f0f\u8bbe\u5907\u3002<\/p>\n<p>&nbsp;&nbsp;&nbsp; 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\u4f5c\u4e3a\u6838\u5fc3\u5904\u7406\u90e8\u4ef6\u7684BF533\u5177\u6709\u826f\u597d\u7684\u9ad8\u901f\u8fd0\u7b97\u6027\u80fd\u3001\u4e30\u5bcc\u7684\u63a5\u53e3\u4e0e\u7cfb\u7edf\u8d44\u6e90\u800c\u4f5c\u4e3a\u672c\u8bbe\u5907\u7684\u6838\u5fc3\u5904\u7406\u90e8\u4ef6\u3002\u6240\u6709\u7684\u8bed\u97f3\u9884\u5904\u7406\u3001\u8f6f\u4ef6\u6ee4\u6ce2\u3001\u73af\u5883\u58f0\u97f3\u6ee4\u9664\u3001FFT\u8fd0\u7b97\u7b49\u90fd\u5728BF533\u4e2d\u8fdb\u884c\u3002<\/p>\n<p>&nbsp;&nbsp;&nbsp; \u5fae\u97f3\u5668\u63a5\u53d7\u5230\u58f0\u97f3\u4e4b\u540e\uff0c\u7ecf\u8fc7\u6a21\u62df\u5f00\u5173\u3001\u8fd0\u653e\uff0c\u4e0e\u6bd4\u8f83\u5668\u7684\u53c2\u8003\u7535\u5e73\u8fdb\u884c\u6bd4\u8f83\u3002\u5f53\u6bd4\u8f83\u7535\u538b\u5927\u4e8e\u53c2\u8003\u7535\u538b\u65f6\u7ed9\u5904\u7406\u5668\u4e00\u4e2a\u4e2d\u65ad\u4fe1\u53f7\u3002\u82e5\u6b64\u65f6DSP\u5904\u4e8e\u7761\u7720\u72b6\u6001\u5219\u9000\u51fa\u7761\u7720\u72b6\u6001\uff0c\u5f00\u59cb\u5de5\u4f5c\u3002\u82e5\u5904\u7406\u5668\u957f\u65f6\u95f4\u63a5\u6536\u4e0d\u5230\u6b64\u4e2d\u65ad\u4fe1\u53f7\u5219\u8fdb\u5165\u7761\u7720\u72b6\u6001\u3002\u7531\u6b64\u505a\u5230\u7cfb\u7edf\u5c3d\u53ef\u80fd\u7684\u6700\u4f4e\u80fd\u8017\u3002<\/p>\n<p>&nbsp;&nbsp;&nbsp; \u5f53\u7cfb\u7edf\u5f00\u59cb\u8fd0\u884c\u540e\uff0c\u5fae\u97f3\u5668\u5f00\u59cb\u5c06\u63a5\u53d7\u7684\u58f0\u97f3\u9001\u5165AD\u8f6c\u6362\u5668\uff0cADC\u5c06\u8f6c\u6362\u4e4b\u540e\u7684\u6570\u636e\u9001\u5165DSP\u8fdb\u884c\u5904\u7406\u3002\u7ecf\u8fc7\u9884\u5904\u7406\u3001\u73af\u5883\u566a\u97f3\u6ee4\u9664\u3001FFT\u8fd0\u7b97\u7b49\u5904\u7406\u4e4b\u540eDSP\u4ece\u4e2d\u63d0\u53d6\u7279\u5f81\u503c\u4e0e\u7d22\u5f15\u6587\u4ef6\u4e2d\u7684\u6570\u636e\u4ee5\u53ca\u7801\u8868\u8fdb\u884c\u6bd4\u8f83\u3002\u5982\u679c\u8fa8\u8ba4\u51fa\u6b4c\u66f2\u4e4b\u540e\u5219\u4ece\u5b58\u50a8\u4ecb\u8d28\u4e2d\u8bfb\u53d6\u6587\u4ef6\uff0c\u7ecf\u8fc7\u97f3\u9891\u89e3\u7801\u4e4b\u540e\u9001\u5165DA\u8f6c\u6362\u5668\u4e2d\uff0c\u7ecf\u8fc7\u8fd0\u653e\u4e4b\u540e\u5373\u53ef\u7531\u626c\u58f0\u5668\u5c06\u4f34\u594f\u64ad\u653e\u51fa\u6765\u3002<\/p>\n<p>&nbsp;&nbsp;&nbsp; \u7531\u4e8eSD\u5361\u91c7\u75283.3V\u4f9b\u7535\uff0c\u4e0eBF533\u6070\u597d\u517c\u5bb9\uff0c\u6545\u4e0d\u9700\u8981\u8f6c\u6362\u7535\u5e73\u3002\u6211\u4eec\u53ef\u4ee5\u91c7\u7528\u5728SD\u5361\u5ea7\u7684CD\u811a\u63a5\u4e0a\u62c9\u7535\u963b\u7684\u65b9\u6cd5\uff0cSD\u5361\u63d2\u5165\u540e\u4ea7\u751f\u4e0b\u964d\u6cbf\u4e2d\u65ad\uff0c\u968f\u5373\u521d\u59cb\u5316SD\u5361\uff0c\u5373\u53ef\u5b9e\u73b0SD\u5361\u7684\u201c\u70ed\u63d2\u201d\u3002\u5f53SD\u5361\u88ab\u62d4\u51fa\u65f6\u4ea7\u751f\u4e0a\u5347\u6cbf\u4e2d\u65ad\uff0c\u968f\u5373\u4fdd\u5b58\u8bfb\u53d6SD\u5361\u7684\u4fe1\u606f\uff0c\u5373\u53ef\u5b9e\u73b0\u201c\u70ed\u62d4\u201d\u3002<\/p>\n<p>&nbsp;&nbsp;&nbsp; \u952e\u76d8\/\u89e6\u6478\u677f\/\u6db2\u6676\u5c4f\u4f5c\u4e3a\u672c\u8bbe\u5907\u7684\u8f93\u5165\u8f93\u51fa\u90e8\u4ef6\u8d77\u5230\u4e86\u9009\u62e9\u5de5\u4f5c\u6a21\u5f0f\u3001\u6539\u53d8\u8bbe\u7f6e\u3001\u81ea\u52a9\u5f55\u5236\u3001\u7f29\u5c0f\u67e5\u627e\u8303\u56f4\u624b\u5de5\u7ba1\u7406\u6587\u4ef6\u7b49\u529f\u80fd\u3002<\/p>\n<p>&nbsp;&nbsp;&nbsp; \u6b64\u5916\uff0c\u56e0\u4e3aBF533\u5f00\u53d1\u5e73\u53f0\u5177\u6709\u4e30\u5bcc\u7684\u63a5\u53e3\uff0c\u53ef\u4ee5\u901a\u8fc7VGA\u63a5\u53e3\u8fde\u63a5\u5230\u7535\u89c6\u673a\u3001\u6295\u5f71\u4eea\u4e0a\uff0c\u5b8c\u5168\u53ef\u4ee5\u53d6\u4ee3\u73b0\u6709\u7684PC\u673a\u7684\u70b9\u6b4c\u7cfb\u7edf\u3002<\/p>\n<h2><span id=\"2\">2 \u7cfb\u7edf\u7ed3\u6784\u56fe<\/span><\/h2>\n<table cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td width=\"119\">&nbsp;<\/td>\n<\/tr>\n<tr>\n<td>&nbsp;<\/td>\n<td><a href=\"http:\/\/img.liuwenhao.ink\/img\/05_C572\/6373e9e64bd8f7ff55a82amp.jpg\"><img loading=\"lazy\" title=\"6373e9e64bd8f7ff55a82&amp;amp\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"6373e9e64bd8f7ff55a82&amp;amp\" src=\"http:\/\/img.liuwenhao.ink\/img\/05_C572\/6373e9e64bd8f7ff55a82amp_thumb.jpg\" width=\"644\" height=\"436\"><\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h1><span id=\"i-4\">\u4e09\u3001\u5173\u952e\u6a21\u5757\u5206\u6790<\/span><\/h1>\n<h2><span id=\"1-2\">1 \u58f0\u97f3\u91c7\u96c6\u4e0e\u5904\u7406\u90e8\u5206<\/span><\/h2>\n<p>&nbsp;&nbsp;&nbsp; \u58f0\u97f3\u91c7\u96c6\u90e8\u5206\u7531\u9a7b\u6781\u4f53\u8bdd\u7b52\u4e0e\u653e\u5927\u5668D2822\u3001\u6ee4\u6ce2\u7535\u8def\u7b49\u7ec4\u6210\u3002\u5176\u4e2d\u6ee4\u6ce2\u7535\u8def\u91c7\u7528\u57fa\u4e8e\u53cc\u4e8c\u6b21\u51fd\u6570\u76842\u9636\u6ee4\u6ce2\u7535\u8def\u4e13\u7528\u82af\u7247UAF42\u5b9e\u73b0\u3002\u5229\u7528UAF42\u63d0\u4f9b\u7684\u4e13\u7528\u8bbe\u8ba1\u8f6f\u4ef6\u53ea\u9700\u5728\u5916\u56f4\u7535\u8def\u4e2d\u6dfb\u52a0\u4e09\u4e2a\u7535\u963b\u5373\u53ef\u53ef\u4ee5\u5f88\u5bb9\u6613\u5b9e\u73b0-3dB\u5e26\u5bbd\u4e3a25kHz\u7684\u4e8c\u9636\u5df4\u7279\u6c83\u65af\u4f4e\u901a\u6ee4\u6ce2\u5668\u3002<\/p>\n<p>&nbsp;&nbsp;&nbsp; \u901a\u8fc7\u9a7b\u6781\u4f53\u8bdd\u7b52\u91c7\u96c6\u58f0\u97f3\u901a\u8fc7D2822\u653e\u5927\u58f0\u97f3\u4fe1\u53f7\uff0c\u8f93\u51fa\u5230\u6bd4\u8f83\u5668LM311\u7684\u53cd\u5411\u8f93\u5165\u7aef\uff0c\u6b64\u65f6D2822\u7684\u8f93\u51fa\u4fe1\u53f7\u7684\u5747\u503c\u4e3a2.16V\u3002\u5728LM311\u7684\u540c\u5411\u8f93\u5165\u7aef\u8f93\u5165\u53ef\u8c03\u7535\u963b\u548c\u56fa\u5b9a\u7535\u963b\u5206\u538b\u6240\u5f97\u95e8\u9650\u7535\u538b\u3002<\/p>\n<p><a href=\"http:\/\/img.liuwenhao.ink\/img\/05_C572\/6373e9e64bd8f805ad28camp.jpg\"><img loading=\"lazy\" title=\"6373e9e64bd8f805ad28c&amp;amp\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; float: none; padding-top: 0px; padding-left: 0px; margin-left: auto; display: block; padding-right: 0px; border-top-width: 0px; margin-right: auto\" border=\"0\" alt=\"6373e9e64bd8f805ad28c&amp;amp\" src=\"http:\/\/img.liuwenhao.ink\/img\/05_C572\/6373e9e64bd8f805ad28camp_thumb.jpg\" width=\"422\" height=\"231\"><\/a><\/p>\n<p align=\"center\"><b>\u56fe<\/b> <b>2<\/b><\/p>\n<h2><span id=\"2-2\">2 \u8f6f\u4ef6\u8bbe\u8ba1<\/span><\/h2>\n<h3><span id=\"nbsp_21\">&nbsp; 2.1 \u8f6f\u4ef6\u67b6\u6784<\/span><\/h3>\n<p>&nbsp;<\/p>\n<p><a href=\"http:\/\/img.liuwenhao.ink\/img\/05_C572\/6373e9e64bd8f8068a65famp.jpg\"><img loading=\"lazy\" title=\"6373e9e64bd8f8068a65f&amp;amp\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; float: none; padding-top: 0px; padding-left: 0px; margin-left: auto; display: block; padding-right: 0px; border-top-width: 0px; margin-right: auto\" border=\"0\" alt=\"6373e9e64bd8f8068a65f&amp;amp\" src=\"http:\/\/img.liuwenhao.ink\/img\/05_C572\/6373e9e64bd8f8068a65famp_thumb.jpg\" width=\"573\" height=\"300\"><\/a><\/p>\n<p align=\"center\"><b>\u56fe<\/b> <b>3<\/b><\/p>\n<h3><span id=\"nbsp_22\">&nbsp; 2.2 \u8f6f\u4ef6\u67b6\u6784\u5206\u6790<\/span><\/h3>\n<p>&nbsp;&nbsp;&nbsp; \u4e3b\u7a0b\u5e8f\u7531\u4ee5\u4e0a8\u5927\u90e8\u5206\u6784\u6210\uff1a\u7f16\u7801\u3001\u8bd1\u7801\u7a0b\u5e8f\uff0cFAT32\u6587\u4ef6\u7ba1\u7406\u7a0b\u5e8f\uff0c\u7d22\u5f15\u6587\u4ef6\u751f\u6210\u7a0b\u5e8f\uff0c\u8f6f\u4ef6\u6ee4\u6ce2\u7a0b\u5e8f\uff0cAD\u3001DA\u9a71\u52a8\uff0cIDE\u786c\u76d8\u9a71\u52a8\u7a0b\u5e8f\uff0c\u6db2\u6676\u3001\u952e\u76d8\u9a71\u52a8\u7a0b\u5e8f\uff0c\u8bed\u97f3\u8bc6\u522b\u7a0b\u5e8f\u7b49\u3002<\/p>\n<p>&nbsp;&nbsp;&nbsp; \u53f3\u4fa7\u7684\u7a0b\u5e8f\u5927\u90e8\u5206\u5c5e\u4e8e\u5e95\u5c42\u9a71\u52a8\uff0c\u5de6\u4fa7\u7684\u7a0b\u5e8f\u5927\u90e8\u5206\u5c5e\u4e8e\u4e0a\u5c42\u5e94\u7528\u3002\u901a\u8fc7\u6a21\u5f0f\u7684\u9009\u62e9\u4ee5\u53ca\u6b4c\u66f2\u8bc6\u522b\u7684\u60c5\u51b5\u5206\u522b\u5728\u4e0d\u540c\u60c5\u51b5\u4e0b\u6267\u884c\u4e0d\u540c\u7684\u7a0b\u5e8f\uff0c\u5b9e\u73b0\u5904\u7406\u5668\u8d44\u6e90\u7684\u5408\u7406\u8c03\u5ea6\u3002<\/p>\n<h2><span id=\"3\">3 \u8bed\u97f3\u8bc6\u522b<\/span><\/h2>\n<h3><span id=\"nbsp_31\">&nbsp; 3.1 \u8bed\u97f3\u8bc6\u522b\u6d41\u7a0b\u56fe<\/span><\/h3>\n<p align=\"center\">&nbsp;<\/p>\n<p align=\"center\"><b><a href=\"http:\/\/img.liuwenhao.ink\/img\/05_C572\/6373e9e64bd8f80ca6c60amp.jpg\"><img loading=\"lazy\" title=\"6373e9e64bd8f80ca6c60&amp;amp\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"6373e9e64bd8f80ca6c60&amp;amp\" src=\"http:\/\/img.liuwenhao.ink\/img\/05_C572\/6373e9e64bd8f80ca6c60amp_thumb.jpg\" width=\"491\" height=\"488\"><\/a><\/b><\/p>\n<p align=\"center\"><b>\u56fe<\/b> <b>4<\/b><\/p>\n<h3><span id=\"nbsp_32\">&nbsp; 3.2 \u8bed\u97f3\u8bc6\u522b\u8fc7\u7a0b\u5206\u6790<\/span><\/h3>\n<p>&nbsp;&nbsp;&nbsp; \u5f53\u6536\u5230ADC\u4f20\u8f93\u8fc7\u6765\u7684\u6570\u636e\u4e4b\u540e\uff0c\u7ecf\u8fc7\u5916\u754c\u7684\u6ee4\u6ce2\u4e0e\u9884\u5904\u7406\uff0c\u9001\u5165DSP\u5185\u3002\u9996\u5148DSP\u9700\u8981\u5bf9\u5176\u8fdb\u884c\u73af\u5883\u566a\u97f3\u7684\u53bb\u9664\u5de5\u4f5c\u3002\u56e0\u4e3a\u5916\u754c\u7684\u566a\u97f3\u632f\u5e45\u8f83\u5c0f\u800c\u4e14\u6301\u7eed\u65f6\u95f4\u5f88\u957f\uff0c\u6240\u4ee5\u6211\u4eec\u53ef\u4ee5\u4ece\u65f6\u57df\u5c06\u6301\u7eed\u4e0d\u65ad\u7684\u76f8\u540c\u7684\u5c0f\u6ce2\u6ee4\u9664\u3002\u8bed\u97f3\u8d77\u59cb\u70b9\u4e0e\u7ec8\u6b62\u70b9\u68c0\u6d4b\u91c7\u7528\u58f0\u5f3a\u9608\u503c\u68c0\u6d4b\u7684\u65b9\u6cd5\u3002\u5f53\u58f0\u5f3a\u5927\u4e8e\u4e00\u5b9a\u7684\u503c\u7684\u65f6\u5019\u7cfb\u7edf\u5c31\u4f1a\u8ba4\u4e3a\u662f\u58f0\u97f3\u7684\u5f00\u59cb\u3002<\/p>\n<p>&nbsp;&nbsp;&nbsp; \u9884\u5904\u7406\u7ed3\u675f\u4e4b\u540e\u5219\u5f00\u59cb\u5bf9\u58f0\u97f3\u8fdb\u884c\u5b9e\u65f6\u5206\u6790\u3002\u4e00\u65b9\u9762\u901a\u8fc7\u6b4c\u8bcd\u7684\u8fde\u7eed\u8bed\u97f3\u8bc6\u522b\u8fa8\u8ba4\u51fa\u6f14\u5531\u8005\u6b63\u5728\u5531\u54ea\u9996\u6b4c\u66f2\uff0c\u53e6\u4e00\u65b9\u9762\u901a\u8fc7\u7279\u5f81\u503c\u63d0\u53d6\u6765\u8fa8\u8ba4\u51fa\u6f14\u5531\u8005\u5531\u7684\u6b4c\u7684\u5185\u5bb9\u3002\u7279\u5f81\u503c\u8bc6\u522b\u662f\u6211\u4eec\u7cfb\u7edf\u7684\u521b\u65b0\u4e4b\u5904\uff0c\u76f8\u6bd4\u4f20\u7edf\u7684\u8bed\u97f3\u8bc6\u522b\u6280\u672f\u5177\u6709\u5360\u7528\u5b58\u50a8\u8d44\u6e90\u5c11\uff0c\u6d88\u8017\u7cfb\u7edf\u8d44\u6e90\u5c11\uff0c\u8bc6\u522b\u5feb\u901f\u51c6\u786e\u7b49\u4f18\u70b9\u3002\u5177\u4f53\u5b9e\u65bd\u6b65\u9aa4\u5982\u4e0b\uff1a\u5c06\u97f3\u4e50\u8fdb\u884c\u65f6\u57df\u4e0e\u9891\u57df\u7684\u5206\u6790\uff0c\u5f97\u51fa\u97f3\u4e50\u7684\u8282\u594f\u662f\u5feb\u662f\u6162\u3001\u58f0\u8c03\u4f4e\u6c89\u8fd8\u662f\u9ad8\u4ea2\u3001\u6f14\u5531\u8005\u662f\u7537\u58eb\u8fd8\u662f\u5973\u58eb\u3001\u6ce2\u5f62\u5177\u6709\u4ec0\u4e48\u6837\u7684\u7279\u5f81\u7b49\u4fe1\u606f\uff0c\u5e76\u5c06\u8fd9\u4e9b\u4fe1\u606f\u901a\u8fc7\u6587\u4ef6\u7ba1\u7406\u7a0b\u5e8f\u5b58\u653e\u5728\u7d22\u5f15\u6587\u4ef6\u4e2d\u3002\u7136\u540e\u901a\u8fc7\u5339\u914d\u65f6\u7684\u6210\u529f\u7387\u8ba1\u7b97\u76f8\u5173\u5ea6\u3002\u5982\u679c\u6b4c\u8bcd\u8bc6\u522b\u4e0e\u66f2\u8c03\u8bc6\u522b\u76f8\u5173\u5ea6\u90fd\u5f88\u9ad8\u5219\u8ba4\u4e3a\u8bc6\u522b\u6210\u529f\uff0c\u6b4c\u66f2\u4ece\u6f14\u5531\u8005\u5f53\u524d\u5531\u7684\u5730\u65b9\u5f00\u59cb\u64ad\u653e\u3002\u5982\u679c\u76f8\u5173\u5ea6\u76f8\u5dee\u8f83\u5927\u5219\u8ba4\u4e3a\u6b64\u6b21\u8bc6\u522b\u5931\u8d25\uff0c\u91cd\u65b0\u63a5\u53d7ADC\u9001\u6765\u7684\u63d0\u53d6\u66f4\u591a\u7684\u6570\u636e\u8fdb\u884c\u8fdb\u4e00\u6b65\u7684\u5206\u6790\uff0c\u76f4\u81f3\u8bc6\u522b\u6210\u529f\u3002<\/p>\n<h1><span id=\"i-5\">\u56db\u3001\u8f6f\u4ef6\u6d41\u7a0b\u5206\u6790<\/span><\/h1>\n<h2><span id=\"1-3\">1 \u8f6f\u4ef6\u6d41\u7a0b\u5206\u6790<\/span><\/h2>\n<p>&nbsp;&nbsp;&nbsp; \u7531\u4e8e\u5531\u6b4c\u65f6\u4eba\u53d1\u97f3\u7684\u7279\u6b8a\u6027\uff0c\u91c7\u7528\u901a\u5e38\u7684\u5355\u5b57\u8bc6\u522b\u7b97\u6cd5\u5f88\u96be\u80dc\u4efb\u6b4c\u66f2\u8fa8\u522b\u7684\u5de5\u4f5c\uff0c\u56e0\u6b64\u6211\u4eec\u91c7\u7528\u4e86\u6b4c\u8bcd\u4e0e\u66f2\u8c03\u540c\u65f6\u8bc6\u522b\u7684\u65b9\u5f0f\u6765\u589e\u52a0\u8bc6\u522b\u7684\u6210\u529f\u7387\u3002\u5f53\u8bc6\u522b\u51fa\u6b4c\u66f2\u6765\u4e4b\u540e\u7cfb\u7edf\u4f1a\u4ece\u6f14\u5531\u8005\u5f53\u524d\u6240\u5531\u533a\u57df\u5185\u5f00\u59cb\u64ad\u653e\u4f34\u594f\u3002\u5f53\u5916\u754c\u957f\u65f6\u95f4\u6ca1\u6709\u6bd4\u8f83\u5927\u7684\u58f0\u97f3\u65f6\u7cfb\u7edf\u81ea\u52a8\u8fdb\u5165\u7761\u7720\u6a21\u5f0f\uff0c\u4ee5\u8fbe\u5230\u4f4e\u529f\u8017\u7684\u76ee\u7684\uff0c\u76f4\u5230\u9ad8\u4e8e\u8bbe\u5b9a\u503c\u7684\u58f0\u97f3\u54cd\u8d77\u3002<\/p>\n<h2><span id=\"2-3\">2 \u8f6f\u4ef6\u6d41\u7a0b\u56fe<\/span><\/h2>\n<p>&nbsp;<\/p>\n<h4><a href=\"http:\/\/img.liuwenhao.ink\/img\/05_C572\/6373e9e64bd8f810c6856amp.jpg\"><img loading=\"lazy\" title=\"6373e9e64bd8f810c6856&amp;amp\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; float: none; padding-top: 0px; padding-left: 0px; margin-left: auto; display: block; padding-right: 0px; border-top-width: 0px; margin-right: auto\" border=\"0\" alt=\"6373e9e64bd8f810c6856&amp;amp\" src=\"http:\/\/img.liuwenhao.ink\/img\/05_C572\/6373e9e64bd8f810c6856amp_thumb.jpg\" width=\"397\" height=\"488\"><\/a><\/h4>\n<p align=\"center\"><b>\u56fe<\/b> <b>5<\/b><\/p>\n<h1><span id=\"i-6\">\u4e94\u3001\u6d4b\u8bd5\u65b9\u6cd5\u4e0e\u6d4b\u8bd5\u7ed3\u679c<\/span><\/h1>\n<h2><span id=\"1-4\">1 \u6d4b\u8bd5\u65b9\u6848\u4e0e\u6d4b\u8bd5\u6761\u4ef6<\/span><\/h2>\n<p>&nbsp;&nbsp;&nbsp; \u6d4b\u8bd5\u4eea\u5668\uff1aEE1643C\u51fd\u6570\u4fe1\u53f7\u53d1\u751f\u5668\uff0cDF1731SL1ATA\u76f4\u6d41\u7a33\u538b\u7535\u6e90\uff0cTektronix TDS1002B\u53cc\u901a\u9053\u6570\u5b57\u5b58\u50a8\u793a\u6ce2\u5668\uff0c SA1030\u6570\u5b57\u9891\u7387\u7279\u6027\u6d4b\u8bd5\u4eea\uff0cFLUKE 15B\u6570\u5b57\u4e07\u7528\u8868\u3002<\/p>\n<p>\u4e00\u822c\u5b9e\u9a8c\u5ba4\u6761\u4ef6\uff0c\u5ba4\u6e2925\u6444\u6c0f\u5ea6\uff0c\u91c7\u7528\u666e\u901a50Hz 220V\u5e02\u7535\u4f9b\u7535\u3002<\/p>\n<h2><span id=\"2-4\">2 \u6d4b\u8bd5\u7ed3\u679c\u4e0e\u6570\u636e<\/span><\/h2>\n<h3><span id=\"nbsp_21-2\">&nbsp; 2.1 \u5916\u90e8\u58f0\u97f3\u89e6\u53d1\u6d4b\u8bd5<\/span><\/h3>\n<p>&nbsp;&nbsp;&nbsp; \u5f53\u8bdd\u7b52\u91c7\u96c6\u7684\u58f0\u97f3\u4fe1\u53f7\u7ecf\u653e\u5927\u540e\u7684\u5f3a\u7684\u8d85\u8fc7\u95e8\u9650\u7535\u538b\u65f6\u6bd4\u8f83\u5668\u5c31\u4f1a\u8f93\u51fa\u4f4e\u7535\u5e73\u3002\u7ed951\u4e00\u4e2a\u4e0b\u964d\u6cbf\u3002\u89e6\u53d1\u5916\u90e8\u4e2d\u65ad\u3002\u6d4b\u8bd5\u6570\u636e\u5982\u4e0b\uff1a<\/p>\n<p align=\"center\"><b>\u8868<\/b> <b>1<\/b> <b>\u5916\u90e8\u58f0\u97f3\u89e6\u53d1\u6d4b\u8bd5\u8868<\/b><\/p>\n<p align=\"center\">&nbsp;<\/p>\n<table cellspacing=\"0\" cellpadding=\"0\" border=\"1\">\n<tbody>\n<tr>\n<td width=\"93\">\n<p>\u6d4b\u8bd5\u7ec4\u53f7<\/p>\n<\/td>\n<td width=\"171\">\n<p>\u540c\u76f8\u8f93\u5165\u95e8\u9650\u7535\u538b\u503c<\/p>\n<\/td>\n<td width=\"326\">\n<p>\u662f\u5426\u89e6\u53d1<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td width=\"93\">\n<p>1<\/p>\n<\/td>\n<td width=\"171\">\n<p>2.56V<\/p>\n<\/td>\n<td width=\"326\">\n<p>\u73af\u5883\u566a\u97f3\u5373\u53ef\u89e6\u53d1<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td width=\"93\">\n<p>2<\/p>\n<\/td>\n<td width=\"171\">\n<p>2.81V<\/p>\n<\/td>\n<td width=\"326\">\n<p>3\u7c73\u5916\u666e\u901a\u8bb2\u8bdd\u58f0\u97f3\u5373\u53ef\u89e6\u53d1<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td width=\"93\">\n<p>3<\/p>\n<\/td>\n<td width=\"171\">\n<p>2.95V<\/p>\n<\/td>\n<td width=\"326\">\n<p>\u5927\u58f0\u8bb2\u8bdd\u5373\u53ef\u89e6\u53d1<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td width=\"93\">\n<p>4<\/p>\n<\/td>\n<td width=\"171\">\n<p>3.19V<\/p>\n<\/td>\n<td width=\"326\">\n<p>\u9700\u5bf9\u9ea6\u514b\u98ce\u5439\u6c14\u65b9\u53ef\u89e6\u53d1<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;&nbsp;&nbsp; \u56e0\u6b64\u6211\u4eec\u9488\u5bf9KTV\u6b4c\u5385\u7684\u73af\u5883\uff0c\u5c06\u540c\u76f8\u8f93\u5165\u7aef\u7684\u53c2\u8003\u7535\u538b\u8bbe\u7f6e\u4e3a2.95V\uff0c\u5b8c\u5168\u53ef\u4ee5\u6ee1\u8db3\u8981\u6c42\u3002<\/p>\n<h3><span id=\"nbsp_22_SD\">&nbsp; 2.2 SD\u5361\u8bc6\u522b\u4e0e\u7d22\u5f15\u5efa\u7acb\u65f6\u95f4\u6d4b\u8bd5<\/span><\/h3>\n<p>&nbsp;&nbsp;&nbsp; \u5c06\u5177\u6709\u6570\u4e2a\u6587\u4ef6\u5939\u4e0e\u97f3\u4e50\u6587\u4ef6\u7684512MB\u7684SD\u5361\u63d2\u5165\u5361\u69fd\uff0c\u8bb0\u5f55\u4ece\u63d2\u5165\u7684\u77ac\u95f4\u81f3\u8bc6\u522b\u5e76\u904d\u5386\u6240\u6709\u6587\u4ef6\u7ed3\u675f\u7684\u65f6\u95f4\u3002<\/p>\n<p align=\"center\"><b>\u8868<\/b> <b>2<\/b> <b>SD<\/b><b>\u5361\u8bc6\u522b\u4e0e\u7d22\u5f15\u5efa\u7acb\u65f6\u95f4\u6d4b\u8bd5\u8868<\/b><\/p>\n<p align=\"center\">&nbsp;<\/p>\n<table cellspacing=\"0\" cellpadding=\"0\" border=\"1\">\n<tbody>\n<tr>\n<td width=\"148\">\n<p>\u6d4b\u8bd5\u7ec4\u53f7<\/p>\n<\/td>\n<td width=\"148\">\n<p>\u6587\u4ef6\u5939\u6570\u91cf<\/p>\n<\/td>\n<td width=\"148\">\n<p>\u6587\u4ef6\u6570\u91cf<\/p>\n<\/td>\n<td width=\"148\">\n<p>\u6240\u9700\u65f6\u95f4<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td width=\"148\">\n<p>1<\/p>\n<\/td>\n<td width=\"148\">\n<p>1<\/p>\n<\/td>\n<td width=\"148\">\n<p>12<\/p>\n<\/td>\n<td width=\"148\">\n<p>\u77ac\u95f4<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td width=\"148\">\n<p>2<\/p>\n<\/td>\n<td width=\"148\">\n<p>0<\/p>\n<\/td>\n<td width=\"148\">\n<p>23<\/p>\n<\/td>\n<td width=\"148\">\n<p>\u77ac\u95f4<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td width=\"148\">\n<p>3<\/p>\n<\/td>\n<td width=\"148\">\n<p>4<\/p>\n<\/td>\n<td width=\"148\">\n<p>54<\/p>\n<\/td>\n<td width=\"148\">\n<p>0.7\u79d2<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td width=\"148\">\n<p>4<\/p>\n<\/td>\n<td width=\"148\">\n<p>12<\/p>\n<\/td>\n<td width=\"148\">\n<p>229<\/p>\n<\/td>\n<td width=\"148\">\n<p>1.9\u79d2<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td width=\"148\">\n<p>5<\/p>\n<\/td>\n<td width=\"148\">\n<p>32<\/p>\n<\/td>\n<td width=\"148\">\n<p>301<\/p>\n<\/td>\n<td width=\"148\">\n<p>3.2\u79d2<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;&nbsp;&nbsp; \u7ecf\u8fc7\u6d4b\u8bd5\uff0c\u6587\u4ef6\u7cfb\u7edf\u5b8c\u5168\u53ef\u4ee5\u6ee1\u8db3\u4e00\u822c\u9700\u8981\u3002<\/p>\n<h3><span id=\"nbsp_23\">&nbsp; 2.3 \u8bed\u8c03\u8bc6\u522b\u6548\u679c\u5206\u6790<\/span><\/h3>\n<p>&nbsp;&nbsp;&nbsp; \u7531FPGA\u63a7\u5236\u8702\u9e23\u5668\u53d1\u51fa\u58f0\u97f3\uff0c\u7531\u7cfb\u7edf\u7684\u9a7b\u6781\u4f53\u8bdd\u7b52\u63a5\u53d7\uff0c\u6d4b\u8bd5\u97f3\u8c03\u8bc6\u522b\u7684\u51c6\u786e\u5ea6\u3002<\/p>\n<p align=\"center\"><b>\u8868<\/b> <b>3<\/b> <b>\u8bed\u8c03\u6548\u679c\u5206\u6790\u6d4b\u8bd5\u8868<\/b><\/p>\n<p align=\"center\">&nbsp;<\/p>\n<table cellspacing=\"0\" cellpadding=\"0\" border=\"1\">\n<tbody>\n<tr>\n<td width=\"197\">\n<p>\u6d4b\u8bd5\u7ec4\u53f7<\/p>\n<\/td>\n<td width=\"171\">\n<p>\u53d1\u58f0\u9891\u7387\uff08Hz\uff09<\/p>\n<\/td>\n<td width=\"223\">\n<p>FFT\u8fd0\u7b97\u6240\u5f97\u7684\u57fa\u9891\uff08Hz\uff09<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td width=\"197\">\n<p>1<\/p>\n<\/td>\n<td width=\"171\">\n<p>50<\/p>\n<\/td>\n<td width=\"223\">\n<p>50<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td width=\"197\">\n<p>2<\/p>\n<\/td>\n<td width=\"171\">\n<p>200<\/p>\n<\/td>\n<td width=\"223\">\n<p>150<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td width=\"197\">\n<p>3<\/p>\n<\/td>\n<td width=\"171\">\n<p>600<\/p>\n<\/td>\n<td width=\"223\">\n<p>550<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td width=\"197\">\n<p>4<\/p>\n<\/td>\n<td width=\"171\">\n<p>1K<\/p>\n<\/td>\n<td width=\"223\">\n<p>900<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td width=\"197\">\n<p>5<\/p>\n<\/td>\n<td width=\"171\">\n<p>1.5K<\/p>\n<\/td>\n<td width=\"223\">\n<p>1450<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td width=\"197\">\n<p>6<\/p>\n<\/td>\n<td width=\"171\">\n<p>5K<\/p>\n<\/td>\n<td width=\"223\">\n<p>4600<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;&nbsp;&nbsp; \u6d4b\u8bd5\u6570\u636e\u4e0e\u5b9e\u9645\u503c\u7565\u6709\u504f\u5dee\uff0c\u6709\u5f85\u6539\u8fdb\u3002<\/p>\n<h2><span id=\"3-2\">3 \u8bef\u5dee\u5206\u6790<\/span><\/h2>\n<p>&nbsp;&nbsp;&nbsp; \u8bed\u8c03\u8bc6\u522b\u7684\u8bef\u5dee\u4e3b\u8981\u56e0\u4e3a\u73af\u5883\u566a\u58f0\u7684\u5e72\u6270\u3002\u867d\u7136\u7ecf\u8fc7\u7ecf\u8fc7\u4e8c\u9636\u6709\u6e90\u6ee4\u6ce2\u4e4b\u540e30kHz\u4ee5\u4e0a\u7684\u9891\u7387\u5206\u91cf\u8870\u51cf20dB\u4ee5\u4e0a\uff0c\u4f46\u662f\u56e0\u4e3a\u56e0\u4e3a\u73af\u5883\u4e2d\u8fd8\u5b58\u5728\u5927\u91cf\u4f4e\u9891\u566a\u58f0\uff0c\u67d0\u4e9b\u65f6\u5019\u5176\u529f\u7387\u503c\u751a\u81f3\u6bd4\u8702\u9e23\u5668\u53d1\u58f0\u7684\u9891\u7387\u7684\u529f\u7387\u503c\u8fd8\u8981\u5927\u3002<\/p>\n<h1><span id=\"i-7\"><b>\u53c2\u8003\u6587\u732e<\/b><\/span><\/h1>\n<p>[1] \u5eb7\u534e\u5149\uff0e\u7535\u5b50\u6280\u672f\u57fa\u7840&#8211;\u6a21\u62df\u90e8\u5206\uff08\u7b2c\u4e94\u7248\uff09\uff0e\u5317\u4eac\uff1a\u9ad8\u7b49\u6559\u80b2\u51fa\u7248\u793e\uff0c2006<\/p>\n<p>[2]\u674e\u7ef4\u504d\uff0c\u90ed\u5f3a\uff0e\u6db2\u6676\u663e\u793a\u5e94\u7528\u6280\u672f\uff0e\u5317\u4eac\uff1a\u7535\u5b50\u5de5\u4e1a\u51fa\u7248\u793e\uff0c2000\uff0e<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p align=\"center\"><a href=\"http:\/\/img.liuwenhao.ink\/img\/05_C572\/6373e9e64bd8f81538289amp.jpg\"><img loading=\"lazy\" title=\"6373e9e64bd8f81538289&amp;amp\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"6373e9e64bd8f81538289&amp;amp\" src=\"http:\/\/img.liuwenhao.ink\/img\/05_C572\/6373e9e64bd8f81538289amp_thumb.jpg\" width=\"584\" height=\"440\"><\/a><\/p>\n<p align=\"center\">\u4f5c\u54c1\u5b9e\u7269\u56fe.\u6444\u4e8e2009.11.9<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6458\u8981 &nbsp;&nbsp;&nbsp; \u968f\u7740\u4eba\u4eec\u751f\u6d3b\u6c34\u5e73\u7684\u63d0\u9ad8\uff0c\u542c\u6b4c\u3001\u5531\u6b4c\u5df2\u7ecf\u6210\u4e3a\u4e00\u4e9b\u4eba\u65e5\u5e38\u751f\u6d3b\u4e2d\u4e0d\u53ef\u7f3a\u5c11\u7684\u4e00\u90e8\u5206\u3002\u7136\u800c\u73b0\u5728\u7684MP3\u64ad\u653e\u5668\u3001KTV\u6b4c\u5385\u91cc\u7684\u70b9\u6b4c\u7cfb\u7edf\u90fd\u5b58\u5728\u627e\u6b4c\u65f6\u9700\u8981\u5728\u6d69\u701a\u7684\u6b4c\u66f2\u5e93\u4e2d\u82e6\u82e6\u641c\u7d22\u3001\u5fd8\u8bb0\u6b4c\u540d\u5b57\u65f6\u5c31\u4e0d\u80fd\u70b9\u6b4c\u3001\u5373\u5174\u6f14\u5531\u65f6\u5c31\u53ea\u80fd\u6e05\u5531\u7b49\u7f3a\u70b9\u3002\u201c\u60f3\u5531\u5c31\u5531\u201d\u5c31\u662f\u4e13\u95e8\u9488\u5bf9\u8fd9\u4e2a\u95ee\u9898\u7684\u4e00\u4e2a\u901a&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":-2422,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[2],"tags":[37],"views":840,"_links":{"self":[{"href":"https:\/\/www.liuwenhao.me\/index.php?rest_route=\/wp\/v2\/posts\/2422"}],"collection":[{"href":"https:\/\/www.liuwenhao.me\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.liuwenhao.me\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.liuwenhao.me\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.liuwenhao.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2422"}],"version-history":[{"count":2,"href":"https:\/\/www.liuwenhao.me\/index.php?rest_route=\/wp\/v2\/posts\/2422\/revisions"}],"predecessor-version":[{"id":5380,"href":"https:\/\/www.liuwenhao.me\/index.php?rest_route=\/wp\/v2\/posts\/2422\/revisions\/5380"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.liuwenhao.me\/index.php?rest_route=\/"}],"wp:attachment":[{"href":"https:\/\/www.liuwenhao.me\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2422"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.liuwenhao.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2422"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.liuwenhao.me\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2422"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}