{"id":15902,"date":"2014-01-06T11:26:37","date_gmt":"2014-01-06T03:26:37","guid":{"rendered":"https:\/\/case.ntu.edu.tw\/blog\/?p=15902"},"modified":"2017-08-01T09:26:38","modified_gmt":"2017-08-01T01:26:38","slug":"%e3%80%90%e6%8e%a2%e7%b4%a2%e5%8d%81%e3%80%91%e9%86%ab%e5%ad%b8%e5%bd%b1%e5%83%8f%e4%b8%ad%e7%9a%84%e6%95%b8%e5%ad%b8","status":"publish","type":"post","link":"https:\/\/case.ntu.edu.tw\/blog\/?p=15902","title":{"rendered":"\u3010\u63a2\u7d22\u5341\u3011\u91ab\u5b78\u5f71\u50cf\u4e2d\u7684\u6578\u5b78"},"content":{"rendered":"<h3 style=\"text-align: center;\"><span style=\"color: #800000;\"><strong>\u7b2c\u516b\u8b1b\u2027\u7279\u7a3f<\/strong><\/span><\/h3>\n<p><strong><span style=\"color: #008080;\"><br \/>\n<span style=\"color: #000080;\">\u25a0\u300c\u4f60\u4eca\u5929\u597dsec\uff01\u300d\u6210\u529f\u5927\u5b78\u8212\u5b87\u5bb8\u6559\u6388\uff0c\u5728\u300c\u807d\u6578\u5b78\u8207\u751f\u547d\u5c0d\u8a71\u300d\u7684\u6700\u5f8c\u4e00\u8b1b\u300c\u91ab\u5b78\u5f71\u50cf\u4e2d\u7684\u6578\u5b78\u300d\uff0c\u6210\u529f\u5730\u627e\u56de\u300c\u6578\u5b78\u300d\u5728\u81fa\u7063\u7684\u5236\u5f0f\u6559\u80b2\u4e0b\uff0c\u4f5a\u5931\u7684\u8da3\u5473\u6027\u3002\u300c\u751f\u6d3b\u4e2d\u6709\u6578\u5b78\uff0c\u53ea\u662f\u6578\u5b78\u5927\u591a\u88ab\u96b1\u85cf\u8d77\u4f86\uff0c\u4f60\u8981\u628a\u5b83\u627e\u51fa\u4f86\u3002\u300d\u8001\u5e2b\u4ee5\u6642\u5c1a\u4e14\u5e74\u8f15\u7684\u8a9e\u5f59\uff0c\u8b93\u540c\u5b78\u5011\u5b78\u6578\u5b78\u4e0d\u518d\u300csec\u300d\uff08\u56e7\uff09\u3002<\/span><\/span><\/strong><br \/>\n<strong><br \/>\n\u64b0\u6587\u2502<\/strong>\u90ed\u51a0\u5ef7<br \/>\n<img fetchpriority=\"high\" decoding=\"async\" class=\"wp-image-15922 alignright\" src=\"http:\/\/case.ntu.edu.tw\/blog\/wp-content\/uploads\/2014\/01\/\u61f7\u5b55.jpg\" alt=\"Imacon Color Scanner\" width=\"436\" height=\"449\" srcset=\"https:\/\/case.ntu.edu.tw\/blog\/wp-content\/uploads\/2014\/01\/\u61f7\u5b55.jpg 698w, https:\/\/case.ntu.edu.tw\/blog\/wp-content\/uploads\/2014\/01\/\u61f7\u5b55-290x300.jpg 290w, https:\/\/case.ntu.edu.tw\/blog\/wp-content\/uploads\/2014\/01\/\u61f7\u5b55-600x619.jpg 600w\" sizes=\"(max-width: 436px) 100vw, 436px\" \/><br \/>\n<b>\u6578\u5b78\u8207\u751f\u547d\u662f\u6709\u4ea4\u96c6\u7684\uff01<\/b><\/p>\n<p>\u300c\u5982\u679cx\u4e0d\u5c6c\u65bca\uff0c\u90a3\u9ebca\u662f\u7a7a\u96c6\u5408\u3002\u300d\u9019\u662f\u908f\u8f2f\u8ab2\u7a0b\u4e0a\u6703\u51fa\u73fe\u7684\u53e5\u5b50\u3002\u800c\u4e8b\u5be6\u4e0a\uff0c\u5b83\u4e5f\u662f\u6211\u5011\u65e5\u5e38\u751f\u6d3b\u4e2d\u7684\u8a9e\u53e5<span style=\"color: #0000ff;\">[1]<\/span>\u3002\u6240\u4ee5\u5b87\u5bb8\u8001\u5e2b\u8aaa\uff1a\u300c\u751f\u6d3b\u4e2d\u6709\u6578\u5b78\uff0c\u4f46\u662f\u8981\u767c\u63ee\u81ea\u5df1\u7684\u60f3\u50cf\u529b\u3002\u300d\u800c\u6578\u5b78\u8207\u6211\u5011\u7684\u751f\u6d3b\u606f\u606f\u76f8\u95dc\uff0c\u4e0d\u50c5\u50c5\u5177\u6709\u6210\u70ba\u300c\u706b\u661f\u6587\u300d\u8a9e\u5f59\u7684\u6f5b\u80fd\uff0c\u4ea6\u85cf\u533f\u5728\u6211\u5011\u7684\u6bcf\u4e00\u901a\u96fb\u8a71\u7576\u4e2d\u3002\u5728\u77e5\u540d\u52d5\u756b\u300a\u540d\u5075\u63a2\u67ef\u5357\uff1a\u6230\u6144\u7684\u6a02\u8b5c\u300b\u4e2d\uff0c\u5c31\u6709\u4e00\u9f63\u8a87\u5f35\u4e4b\u9918\uff0c\u53c8\u4e0d\u5931\u771f\u5be6\u7684\u4e00\u5e55\uff0c\u63cf\u8ff0\u4e3b\u4eba\u7fc1\u67ef\u5357\u8207\u97f3\u6a02\u5bb6\u7528\u5169\u500b\u4e0d\u540c\u983b\u7387\u7684\u300c\u6b4c\u8072\u300d\u4f86\u64a5\u901a\u300c\u96fb\u8a71\u300d\u7684\u7279\u6280\u8868\u6f14\u3002\u5b87\u5bb8\u8001\u5e2b\u5728\u6f14\u8b1b\u4e2d\u8b93\u5927\u5bb6\u807d\u628a\u5169\u500b\u6b63\u5f26\u51fd\u6578\u52a0\u5728\u4e00\u8d77\u7684\u4e00\u5834\u9b54\u8853\u8868\u6f14\uff0c\u8aaa\u660e\u4e86\u67ef\u5357\u5287\u4e2d\u7684\u795e\u5947\u4e4b\u8655\u3002\u6211\u5011\u5f9e\u570b\u4e2d\u958b\u59cb\u63a5\u89f8\u4e09\u89d2\u51fd\u6578\uff0c\u8a8d\u8b58sin\u3001cos\u3001tan\uff0c\u751a\u81f3\u6bcf\u5929\u5411\u5e2b\u9577\u54c0\u865f\uff1a\u300c\u5b78\u6578\u5b78\u6709\u4ec0\u9ebc\u7528\uff1f\u300d\u5176\u5be6\u6211\u5011\u73fe\u884c\u96fb\u8a71\u6240\u63a1\u53d6\u7684\u300c\u96fb\u8a71\u64a5\u865f\u97f3\uff08DTMF\uff0cDual Tone Multiple Frequency\uff09\u300d\uff0c\u5c31\u662f\u7531\u5169\u7d44\u983b\u7387\u7684sin\u6ce2\u6240\u7d44\u5408\u800c\u6210<span style=\"color: #0000ff;\">[2]<\/span>\u3002\u5957\u53e5\u6642\u4e0b\u6d41\u884c\u7684\u8a71\uff1a\u300c\u5982\u679c\u9019\u4e0d\u662f\u6578\u5b78\uff0c\u90a3\u4ec0\u9ebc\u624d\u662f\u6578\u5b78\uff1f\u300d<\/p>\n<p><b>\u74b0\u74b0\u76f8\u6263\u7684\u6578\u5b78\u77e5\u8b58<\/b><\/p>\n<p>CT\u5f71\u50cf\u900f\u904eRandon Transform\u4f86\u8f49\u63db\u8cc7\u8a0a\uff0c\u800c\u8d85\u97f3\u6ce2\u5f71\u50cf\u662f\u6839\u57fa\u65bcHibert Transform\u3002\u800c\u4e0d\u8ad6\u662fRandon Transform\u6216Hibert Transform\uff0c\u90fd\u8207\u5085\u7acb\u8449\u8f49\u63db\u6709\u8457\u5bc6\u5207\u95dc\u4fc2\u3002\u800c\u9019\u4e9b\u77e5\u8b58\uff0c\u53ef\u4ee5\u8ffd\u6eaf\u5230\u570b\u9ad8\u4e2d\u6240\u5b78\u7684\uff1a\u806f\u7acb\u65b9\u7a0b\u5f0f\u3001\u57fa\u5e95\u3001\u4e09\u89d2\u51fd\u6578\u3001\u548c\u5dee\u5316\u7a4d\u3001\u6b63\u9918\u5f26\u758a\u5408\u7b49\u3002<br \/>\n<!--more--><\/p>\n<p style=\"text-align: center;\"><img decoding=\"async\" class=\"aligncenter wp-image-15904\" style=\"border: 0px;\" src=\"http:\/\/case.ntu.edu.tw\/blog\/wp-content\/uploads\/2014\/01\/\u5716\u72471.png\" alt=\"\u5716\u72471\" width=\"351\" height=\"37\" srcset=\"https:\/\/case.ntu.edu.tw\/blog\/wp-content\/uploads\/2014\/01\/\u5716\u72471.png 439w, https:\/\/case.ntu.edu.tw\/blog\/wp-content\/uploads\/2014\/01\/\u5716\u72471-300x31.png 300w\" sizes=\"(max-width: 351px) 100vw, 351px\" \/><\/p>\n<div>\n<div align=\"center\">\n<table border=\"1\" width=\"291\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td nowrap=\"nowrap\" width=\"58\">\n<p align=\"center\"><b>Hz<\/b><\/p>\n<\/td>\n<td nowrap=\"nowrap\" width=\"58\">\n<p align=\"center\"><b>1209<\/b><\/p>\n<\/td>\n<td nowrap=\"nowrap\" width=\"58\">\n<p align=\"center\"><b>1336<\/b><\/p>\n<\/td>\n<td nowrap=\"nowrap\" width=\"58\">\n<p align=\"center\"><b>1477<\/b><\/p>\n<\/td>\n<td nowrap=\"nowrap\" width=\"58\">\n<p align=\"center\"><b>1633<\/b><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td nowrap=\"nowrap\" width=\"58\">\n<p align=\"center\"><b>697<\/b><\/p>\n<\/td>\n<td nowrap=\"nowrap\" width=\"58\">\n<p align=\"center\">1<\/p>\n<\/td>\n<td nowrap=\"nowrap\" width=\"58\">\n<p align=\"center\">2<\/p>\n<\/td>\n<td nowrap=\"nowrap\" width=\"58\">\n<p align=\"center\">3<\/p>\n<\/td>\n<td nowrap=\"nowrap\" width=\"58\">\n<p align=\"center\">A<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td nowrap=\"nowrap\" width=\"58\">\n<p align=\"center\"><b>770<\/b><\/p>\n<\/td>\n<td nowrap=\"nowrap\" width=\"58\">\n<p align=\"center\">4<\/p>\n<\/td>\n<td nowrap=\"nowrap\" width=\"58\">\n<p align=\"center\">5<\/p>\n<\/td>\n<td nowrap=\"nowrap\" width=\"58\">\n<p align=\"center\">6<\/p>\n<\/td>\n<td nowrap=\"nowrap\" width=\"58\">\n<p align=\"center\">B<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td nowrap=\"nowrap\" width=\"58\">\n<p align=\"center\"><b>852<\/b><\/p>\n<\/td>\n<td nowrap=\"nowrap\" width=\"58\">\n<p align=\"center\">7<\/p>\n<\/td>\n<td nowrap=\"nowrap\" width=\"58\">\n<p align=\"center\">8<\/p>\n<\/td>\n<td nowrap=\"nowrap\" width=\"58\">\n<p align=\"center\">9<\/p>\n<\/td>\n<td nowrap=\"nowrap\" width=\"58\">\n<p align=\"center\">C<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td nowrap=\"nowrap\" width=\"58\">\n<p align=\"center\"><b>941<\/b><\/p>\n<\/td>\n<td nowrap=\"nowrap\" width=\"58\">\n<p align=\"center\">*<\/p>\n<\/td>\n<td nowrap=\"nowrap\" width=\"58\">\n<p align=\"center\">0<\/p>\n<\/td>\n<td nowrap=\"nowrap\" width=\"58\">\n<p align=\"center\">#<\/p>\n<\/td>\n<td nowrap=\"nowrap\" width=\"58\">\n<p align=\"center\">D<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>&nbsp;<\/p>\n<\/div>\n<p>&nbsp;<\/p>\n<p><b>\u89e3\u806f\u7acb\u65b9\u7a0b\u5f0f<\/b><\/p>\n<p>\u91ab\u7642\u4e0a\u5e38\u7528\u7684\u300cCT\u5f71\u50cf\uff08CT\uff0ccomputed tomography\uff09\uff0c\u8207\u300c\u6578\u5b78\u300d\u95dc\u4fc2\u5bc6\u5207\u662f\u6211\u5011\u5df2\u7d93\u77ad\u89e3\u7684\u4e8b\u60c5\u3002\u4f46\u662f\u9019\u4e9b\u6578\u5b78\u77e5\u8b58\u5728\u9ad8\u4e2d\u6642\u6211\u5011\u5c31\u5df2\u7d93\u901a\u901a\u5b78\u904e\uff0c\u9019\u537b\u662f\u6211\u5011\u524d\u6240\u672a\u805e\u7684\u9a5a\u4eba\u6d88\u606f\u3002\u5b87\u5bb8\u8001\u5e2b\u7528\u300c\u9ad8\u4e2d\u6578\u5b78\u300d\u4e2d\u7684\u300c\u806f\u7acb\u65b9\u7a0b\u5f0f\u300d\u4f86\u89e3\u91cbCT\u5f71\u50cf\u3002<\/p>\n<p>X\u5149\uff0c\u662f\u4e00\u7a2e\u6ce2\u9577\u57280.01nm\u523010nm\u7684\u96fb\u78c1\u8f3b\u5c04\u3002\u5229\u7528\u9ad8\u96fb\u58d3\u7684\u771f\u7a7a\u7ba1\uff0c\u649e\u64ca\u967d\u6975\u7684\u91d1\u5c6c\u800c\u5f97\u3002\u800c\u7576\u4eba\u9ad4\u63a5\u53d7X\u5149\u6642\uff0c\u4e0d\u540c\u7684\u8eab\u9ad4\u7d44\u7e54\u6703\u5438\u6536\u4e0d\u540c\u7a0b\u5ea6\u7684X\u5149\u3002\u56e0\u8457X\u5149\u88ab\u5438\u6536\u7a0b\u5ea6\u7684\u5dee\u7570\uff0c\u5728\u5e95\u7247\u4e0a\u5c31\u6703\u5448\u73fe\u51fa\u8eab\u9ad4\u5167\u90e8\u7684\u69cb\u9020\u3002\u800cCT\u5f71\u50cf\uff0c\u5247\u662f\u5f9e\u4e0d\u540c\u7684\u65b9\u5411\u62cd\u651d\u75c5\u60a3\u7684X\u5149\u7247\uff0c\u5229\u7528\u8af8\u591a\u7684X\u5149\u8cc7\u6599\u4f86\u91cd\u5efa\u75c5\u60a3\u8eab\u9ad4\u5167\u90e8\u7684\u7d50\u69cb\u3002<\/p>\n<p>\u5b87\u5bb8\u8001\u5e2b\u70ba\u4e86\u8b93\u6211\u5011\u77ad\u89e3CT\u5f71\u50cf\u7684\u539f\u7406\uff0c\u6e96\u5099\u56db\u5f35\u64b2\u514b\u724cA\u3001B\u3001C\u3001D\u3002\u9019\u56db\u5f35\u724c\u5206\u5225\u4ee3\u8868\u6211\u5011\u8eab\u9ad4\u5167\u90e8\u7684\u67d0\u7a2e\u7d44\u7e54\uff0c\u4f46\u662f\u6211\u5011\u4e0d\u6e05\u695a\u9019\u56db\u500b\u7d44\u7e54\u5c0dX\u5149\u7684\u5438\u6536\u7a0b\u5ea6\u70ba\u4f55\uff1f\u6211\u5011\u53ea\u77e5\u9053\uff0c\u7576X\u5149\u4ee5\u6a6b\u5411\u7167\u5c04\u75c5\u60a3\u6642\uff0c\u6703\u5f97\u5230\u5169\u7d44\u5438\u6536\u7684\u6578\u503c\u300c19\u300d\u3001\u300c13\u300d\uff1b\u800c\u7576X\u5149\u4ee5\u7e31\u5411\u7167\u5411\u60a3\u8005\u6642\uff0c\u6703\u5f97\u5230\u53e6\u5916\u5169\u7d44\u5438\u6536\u7684\u6578\u503c\u300c12\u300d\u3001\u300c20\u300d\u3002\u6211\u5011\u5c31\u7531\u9019\u4e8c\u7d44\u6578\u5b57\uff0c\u53bb\u56de\u63a8A\u3001B\u3001C\u3001D\u56db\u500b\u7d44\u7e54\uff0c\u5c0dX\u5149\u7684\u5438\u6536\u7a0b\u5ea6\u3002<\/p>\n<figure id=\"attachment_15955\" aria-describedby=\"caption-attachment-15955\" style=\"width: 286px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/case.ntu.edu.tw\/blog\/wp-content\/uploads\/2014\/01\/\u5716\u72478.png\"><img decoding=\"async\" class=\" wp-image-15955\" src=\"http:\/\/case.ntu.edu.tw\/blog\/wp-content\/uploads\/2014\/01\/\u5716\u72478.png\" alt=\"\u5716\u72478\" width=\"286\" height=\"140\" srcset=\"https:\/\/case.ntu.edu.tw\/blog\/wp-content\/uploads\/2014\/01\/\u5716\u72478.png 408w, https:\/\/case.ntu.edu.tw\/blog\/wp-content\/uploads\/2014\/01\/\u5716\u72478-300x147.png 300w\" sizes=\"(max-width: 286px) 100vw, 286px\" \/><\/a><figcaption id=\"caption-attachment-15955\" class=\"wp-caption-text\">\uff08\u5716\u4e00\uff09X\u5149\u7167\u5c04\u793a\u610f\u5716\u3002<\/figcaption><\/figure>\n<p>\u56e0\u6b64\uff0c\u8981\u505a\u51faCT\u5f71\u50cf\uff0c\u5c31\u662f\u8981\u6210\u529f\u89e3\u51fa\u9019\u4e9b\u672a\u77e5\u6578\u3002\u800c\u5f9e\u806f\u7acb\u65b9\u7a0b\u5f0f\uff1a<\/p>\n<p style=\"text-align: center;\"><a href=\"http:\/\/case.ntu.edu.tw\/blog\/wp-content\/uploads\/2014\/01\/\u5716\u72472.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-15905\" style=\"border: 0px;\" src=\"http:\/\/case.ntu.edu.tw\/blog\/wp-content\/uploads\/2014\/01\/\u5716\u72472.png\" alt=\"\u5716\u72472\" width=\"183\" height=\"78\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p>\u6211\u5011\u6703\u767c\u73fe\u82e5\u53ea\u6709\u5169\u500b\u65b9\u5411\u7684\u8cc7\u8a0a\uff08\u4e8c\u5207\uff09\u8981\u89e3\u51fa\u56db\u500b\u672a\u77e5\u6578\uff0c\u662f\u4e0d\u6703\u5f97\u5230\u552f\u4e00\u89e3\u7684\u3002\u56e0\u6b64\uff0c\u6211\u5011\u5617\u8a66\u52a0\u4e0a\u7b2c\u4e09\u500b\u65b9\u5411\uff0c\u5f9e45\u5ea6\u89d2\u53d6\u5f97\u5169\u689d\u5f0f\u5b50\uff08\u5f0f\u4e8c\uff09\u3002<\/p>\n<p style=\"text-align: center;\"><a href=\"http:\/\/case.ntu.edu.tw\/blog\/wp-content\/uploads\/2014\/01\/\u5716\u72473.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-15906\" style=\"border: 0px;\" src=\"http:\/\/case.ntu.edu.tw\/blog\/wp-content\/uploads\/2014\/01\/\u5716\u72473.png\" alt=\"\u5716\u72473\" width=\"269\" height=\"79\" srcset=\"https:\/\/case.ntu.edu.tw\/blog\/wp-content\/uploads\/2014\/01\/\u5716\u72473.png 384w, https:\/\/case.ntu.edu.tw\/blog\/wp-content\/uploads\/2014\/01\/\u5716\u72473-300x88.png 300w\" sizes=\"(max-width: 269px) 100vw, 269px\" \/><\/a><\/p>\n<p>\u4ee5\uff08\u5f0f\u4e00\uff09\u548c\uff08\u5f0f\u4e8c\uff09\u70ba\u57fa\u790e\uff0c\u6211\u5011\u5c31\u53ef\u4ee5\u5f97\u51faA\u3001B\u3001C\u3001D\u7684\u5438\u6536\u7a0b\u5ea6\u5716\uff0c\u4e5f\u5c31\u662f\u300c\u4e09\u5207\u300d\u7684CT\u5f71\u50cf\u3002<\/p>\n<p>&nbsp;<\/p>\n<p><b>\u8d85\u97f3\u6ce2<\/b><\/p>\n<p>\u8d85\u97f3\u6ce2\u4e5f\u662f\u91ab\u7642\u7684\u5bf5\u5152\uff0c\u800c\u672c\u65bc\u300c\u8072\u6ce2\u300d\u7684\u8d85\u97f3\u6ce2\uff0c\u66f4\u662f\u8207\u6578\u5b78\u7dca\u5bc6\u76f8\u9023\u3002\u97f3\u6ce2\u662f\u758f\u5bc6\u6ce2\uff0c\u6211\u5011\u53ef\u4ee5\u5c07\u8072\u6ce2\u4ee5\u6ce2\u52d5\u7684\u5716\u5f62\u8868\u793a\u3002\u800c\u6578\u5b78\u4e2d\u7684\u9031\u671f\u51fd\u6578\uff0c\u66f4\u53ef\u4ee5\u7528\u4f86\u62c6\u89e3\u8072\u6ce2\u7684\u5716\u5f62\uff0c\u800c\u5c07\u8072\u6ce2\u62c6\u6210\u6578\u7d44\u7684\u6578\u5b78\u65b9\u7a0b\u5f0f\u3002\u800c\u548c\u5dee\u5316\u7a4d\uff08\u5f0f\u4e09\uff09\u3001\u96e2\u6563\u7684\u5085\u7acb\u8449\u8f49\u63db\uff08Discrete Fourier transform\uff09\u662f\u6211\u5011\u624b\u4e2d\u7684\u91cd\u8981\u5de5\u5177\u3002<\/p>\n<p style=\"text-align: center;\"><a href=\"http:\/\/case.ntu.edu.tw\/blog\/wp-content\/uploads\/2014\/01\/\u5716\u72474.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-15908\" style=\"border: 0px;\" src=\"http:\/\/case.ntu.edu.tw\/blog\/wp-content\/uploads\/2014\/01\/\u5716\u72474.png\" alt=\"\u5716\u72474\" width=\"404\" height=\"55\" srcset=\"https:\/\/case.ntu.edu.tw\/blog\/wp-content\/uploads\/2014\/01\/\u5716\u72474.png 557w, https:\/\/case.ntu.edu.tw\/blog\/wp-content\/uploads\/2014\/01\/\u5716\u72474-300x40.png 300w\" sizes=\"(max-width: 404px) 100vw, 404px\" \/><\/a><\/p>\n<figure id=\"attachment_15910\" aria-describedby=\"caption-attachment-15910\" style=\"width: 285px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/case.ntu.edu.tw\/blog\/wp-content\/uploads\/2014\/01\/\u5716\u72475.png\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-15910\" src=\"http:\/\/case.ntu.edu.tw\/blog\/wp-content\/uploads\/2014\/01\/\u5716\u72475.png\" alt=\"\u5716\u72475\" width=\"285\" height=\"304\" srcset=\"https:\/\/case.ntu.edu.tw\/blog\/wp-content\/uploads\/2014\/01\/\u5716\u72475.png 285w, https:\/\/case.ntu.edu.tw\/blog\/wp-content\/uploads\/2014\/01\/\u5716\u72475-281x300.png 281w\" sizes=\"(max-width: 285px) 100vw, 285px\" \/><\/a><figcaption id=\"caption-attachment-15910\" class=\"wp-caption-text\">\uff08\u5716\u4e8c\uff09\u548c\u5dee\u5316\u7a4d\u7121\u5b57\u8b49\u660e\u3002<\/figcaption><\/figure>\n<p>\u96e2\u6563\u7684\u5085\u7acb\u8449\u8b8a\u63db\u662f\u4e00\u7a2e\u7dda\u6027\u7684\u8b8a\u63db\u3002\u800c\u904e\u7a0b\u5c31\u662f\u9ad8\u4e2d\u6240\u8ac7\u7684\u300c\u03a3\uff08Sigma\uff09\u300d\u3002\u56e0\u6b64\uff0c\u5b87\u5bb8\u8001\u5e2b\u5c31\u5f9e\u96e2\u6563\u7684\u5085\u7acb\u8449\u8b8a\u63db\u4f86\u89e3\u91cb\uff0c\u8b93\u6211\u5011\u9a5a\u8a1d\u65bc\u77e5\u8b58\u7d2f\u7a4d\u7684\u904e\u7a0b\u3002\u9ad8\u4e2d\u6240\u5b78\u7684\u77e5\u8b58\uff0c\u78ba\u78ba\u5be6\u5be6\u80fd\u61c9\u7528\u5728\u6211\u5011\u7684\u751f\u6d3b\u7576\u4e2d\u3002\u6211\u5011\u628a\u6a5f\u5668\u5075\u6e2c\u5230\u7684\u8d85\u97f3\u6ce2\u6ce2\u52d5\uff0c\u5927\u81bd\u5047\u8a2d\u5176\u6ce2\u578b\u662fcos\u548csin\u7684\u7d44\u5408\uff0c\u6309\u7167\u67d0\u500b\u4fc2\u6578\u628a\u5b83\u52a0\u8d77\u4f86\uff08\u5f0f\u56db\uff09\u3002<\/p>\n<p style=\"text-align: center;\">\u00a0<a href=\"http:\/\/case.ntu.edu.tw\/blog\/wp-content\/uploads\/2014\/01\/\u5716\u72476.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-15912\" style=\"border: 0px;\" src=\"http:\/\/case.ntu.edu.tw\/blog\/wp-content\/uploads\/2014\/01\/\u5716\u72476.png\" alt=\"\u5716\u72476\" width=\"474\" height=\"136\" srcset=\"https:\/\/case.ntu.edu.tw\/blog\/wp-content\/uploads\/2014\/01\/\u5716\u72476.png 654w, https:\/\/case.ntu.edu.tw\/blog\/wp-content\/uploads\/2014\/01\/\u5716\u72476-300x86.png 300w\" sizes=\"(max-width: 474px) 100vw, 474px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>\u800c\u5728\u8b49\u660e\u9019\u7d44\u731c\u6e2c\u7684\u904e\u7a0b\u7576\u4e2d\uff0c\u6211\u5011\u6703\u9700\u8981\u7528\u5230\u5e7e\u500b\u91cd\u8981\u7684\u7b49\u5f0f\uff1a<\/p>\n<p style=\"text-align: center;\"><a href=\"http:\/\/case.ntu.edu.tw\/blog\/wp-content\/uploads\/2014\/01\/\u5716\u72477.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-15913\" style=\"border: 0px;\" src=\"http:\/\/case.ntu.edu.tw\/blog\/wp-content\/uploads\/2014\/01\/\u5716\u72477.png\" alt=\"\u5716\u72477\" width=\"312\" height=\"182\" srcset=\"https:\/\/case.ntu.edu.tw\/blog\/wp-content\/uploads\/2014\/01\/\u5716\u72477.png 450w, https:\/\/case.ntu.edu.tw\/blog\/wp-content\/uploads\/2014\/01\/\u5716\u72477-300x174.png 300w\" sizes=\"(max-width: 312px) 100vw, 312px\" \/><\/a><\/p>\n<p>\u900f\u904e\u96e2\u6563\u7684\u5085\u7acb\u8449\u8b8a\u63db\uff0c\u6211\u5011\u7372\u5f97\uff08\u5f0f\u4e94\uff09\u4e2d\u7684a<sub>k<\/sub>\u8207<sub><span style=\"font-size: small;\">b<\/span>k<\/sub>\uff0c\u5982\u6b64\u5c31\u6210\u529f\u5c07\u6ce2\u5206\u89e3\u6b63\u9918\u5f26\u51fd\u6578\u7684\u7d44\u5408\u3002\u518d\u900f\u904eHilbert\u8f49\u63db\u53ef\u4ee5\u6c42\u5f97\u9019\u500b\u6ce2\u7684\u6ce2\u5305\u3002\u800c\u8d85\u97f3\u6ce2\uff0c\u5c31\u662f\u5229\u7528\u63a2\u982d\u767c\u51fa\u8d85\u97f3\u6ce2\u3002\u85c9\u7531\u8d85\u97f3\u6ce2\u6253\u5230\u7269\u8cea\u5f8c\u53cd\u5f48\u7684\u8a0a\u865f\uff0c\u518d\u7531\u63a5\u6536\u5668\u6536\u96c6\u8a0a\u865f\uff0c\u4e26\u900f\u904e\u6a5f\u5668\uff08amplifier\uff09\u5c07\u5fae\u5f31\u7684\u8a0a\u865f\u653e\u5927\u3002\u7136\u5f8c\u900f\u904e\u904b\u7b97\u53d6\u5f97\u8072\u6ce2\u6ce2\u5305\u7684\u632f\u5e45\uff0c\u4e26\u5c07\u632f\u5e45\u53d6\u300clog\u300d\uff0c\u6309\u7167\u63a2\u982d\u7684\u6b21\u5e8f\u6392\u5217\u6210\u4e00\u500b\u4e8c\u7dad\u5f71\u50cf\uff0c\u9019\u5c31\u662f\u6211\u5011\u5728\u8d85\u97f3\u6ce2\u6a5f\u5668\u87a2\u5e55\u4e0a\u6240\u770b\u5230\u7684B-mode\u5f71\u50cf\u3002<\/p>\n<p><b><br \/>\n\u6578\u5b78\u5bb6\u5f9e\u4e8b\u91ab\u5b78\u7814\u7a76<\/b><\/p>\n<p>\u8a9e\u8a00\u7684\u8f49\u63db\u975e\u5e38\u7684\u91cd\u8981\u3002\u5316\u5b78\u672c\u79d1\u51fa\u751f\u7684\u7af9\u4ead\u8001\u5e2b\u9019\u9ebc\u8aaa\uff1a\u300c\u5316\u5b78\u662f\u63a2\u7a76\u7269\u8cea\uff0c\u548c\u76f8\u95dc\u7684\u79d1\u5b78\u3002\u5f9e\u4e8c\u5341\u4e16\u7d00\u4e2d\u671f\u4ee5\u5f8c\uff0c\u6211\u5011\u5f88\u6e05\u695a\u610f\u8b58\u7684\u77e5\u9053\u3002\u9664\u4e86\u7269\u8cea\u80fd\u91cf\u4ee5\u5916\uff0c\u8cc7\u8a0a\u3002\u7269\u8cea\u548c\u4eba\u4e4b\u9593\u7684\u8cc7\u8a0a\uff0c\u662f\u5f88\u6709\u8da3\u5f88\u6709\u610f\u601d\u7684\u3002\u300d\u4eba\u7684\u8166\uff0c\u53ef\u4ee5\u77ad\u89e3\u9019\u7576\u4e2d\u7684\u8a31\u591a\u8cc7\u8a0a\u662f\u4ec0\u9ebc\u610f\u601d\uff0c\u4e00\u65e6\u77ad\u89e3\u5c31\u53ef\u4ee5\u53bb\u89e3\u8b80\u3002\u9019\u7a2e\u89e3\u8b80\u5f88\u591a\u662f\u9760\u8457\u6578\u5b78\u3002\u300c\u9019\u500b\u4e16\u754c\uff0c\u53bb\u7406\u89e3\u6642\u3002\u6709\u7269\u8cea\uff0c\u6709\u4eba\uff0c\u6709\u8cc7\u8a0a\u3002\u300d<\/p>\n<p>\u7576\u5b87\u5bb8\u8001\u5e2b\u525b\u958b\u59cb\u63a5\u89f8\u91ab\u5b78\u7814\u7a76\u7684\u6642\u5019\uff0c\u4e5f\u78b0\u5230\u8a31\u591a\u7684\u56f0\u64fe\u3002\u842c\u751f\u8001\u5e2b\u88dc\u5145\uff1a\u300c\u6982\u5ff5\u7684\u8f49\u63db\uff08\u8f49\u8b6f\uff09\u7684\u904e\u7a0b\u975e\u5e38\u7684\u91cd\u8981\u3002\u6211\u5011\u6015\u7814\u7a76\u7684\u6771\u897f\uff08\u5728\u8f49\u63db\u904e\u7a0b\u7576\u4e2d\uff09\u6d88\u5931\u3002\u300d\u5b87\u5bb8\u8001\u5e2b\u8aaa\u660e\uff0c\u4ed6\u4e00\u958b\u59cb\u4e5f\u4e0d\u66c9\u5f97\u4ec0\u9ebc\u662f\u809d\u7e96\u7dad\u5316\uff0c\u5408\u4f5c\u7684\u91ab\u5e2b\u5c31\u5f97\u8981\u5411\u4ed6\u5011\u6162\u6162\u89e3\u91cb\u3002\u300c\u6211\u5011\u8981\u53bb\u77ad\u89e3\u4ed6\u5011\uff08\u91ab\u751f\uff09\u7684\u884c\u8a71\u3002\u300d\u7576\u8001\u5e2b\u7406\u89e3\uff0c\u809d\u4e0a\u982d\u6703\u786c\u5316\u3001\u7522\u751f\u4e0d\u5e73\u6ed1\u7684\u9846\u7c92\uff0c\u5c31\u5fc5\u9808\u8981\u5c07\u9019\u500b\u91ab\u5b78\u4e0a\u7684\u73fe\u8c61\uff0c\u8f49\u63db\u6210\u6578\u5b78\u7684\u8a9e\u8a00\uff08homogeneous\uff09\u3002<\/p>\n<p>&nbsp;<\/p>\n<p><b>\u6eaf\u6e90\u81fa\u7063<\/b><\/p>\n<p>\u5b87\u5bb8\u8001\u5e2b\u4e5f\u71b1\u60c5\u5730\u5206\u4eab\u4e00\u90e8\u81fa\u5357\u7684\u89c0\u5149\u5f71\u7247\u7d66\u89c0\u773e\u6b23\u8cde\uff0c\u800c\u9019\u5145\u6eff\u81fa\u7063\u5473\u7684\u5728\u5730\u4ecb\u7d39\uff0c\u4e5f\u6b63\u5de7\u929c\u63a5\u8d77\u6211\u5011\u79d1\u6559\u4e2d\u5fc3\u5c0d\u8a8d\u8b58\u81fa\u7063\u7684\u95dc\u5fc3\u3002\u6211\u5011\u5c07\u5728\u4e0b\u4e00\u671f\u7684\u63a2\u7d22\u8b1b\u5ea7\uff0c\u898f\u5283\u4e00\u7cfb\u5217\u6eaf\u6e90\u81fa\u7063\u7684\u8b1b\u5ea7\u3002\u660e\u5e74\u6625\u5929\uff0c\u7b2c\u5341\u4e00\u671f\u7684\u63a2\u7d22\u8b1b\u5ea7\uff0c\u5c07\u7531\u4e2d\u7814\u9662\u7684\u53f2\u8a9e\u6240\u7684\u5289\u76ca\u660c\u5289\u535a\u58eb\u7b56\u756b\u3002\u4f86\u8ac7\u81fa\u7063\u81ea\u7136\u3001\u5730\u5f62\u3001\u751f\u614b\u3001\u5730\u8cea\u3001\u4eba\u6587\u7684\u6eaf\u6e90\u3002\u662f\u79d1\u6559\u4e2d\u5fc3\u5c0d\u65bc\u8de8\u9818\u57df\u5b78\u7fd2\u7684\u5168\u65b0\u5617\u8a66\u3002\u9019\u4e00\u671f\u8b1b\u5ea7\u7684\u5c3e\u8072\uff0c\u9673\u7af9\u4ead\u4e3b\u4efb\u52c9\u52f5\u5927\u5bb6\uff1a\u300cLife is for learning.\u300d\u6b61\u8fce\u60a8\u7684\u849e\u81e8\u3002<\/p>\n<hr align=\"left\" size=\"1\" width=\"33%\" \/>\n<div>\n<p><a title=\"\" href=\"file:\/\/\/C:\/Users\/ntucase\/Downloads\/%E3%80%90%E7%89%B9%E7%A8%BF%E3%80%91%E9%86%AB%E5%AD%B8%E5%BD%B1%E5%83%8F%E4%B8%AD%E7%9A%84%E6%95%B8%E5%AD%B8%20(1)1020102%E5%AE%87%E5%AE%B8%E8%80%81%E5%B8%AB%E7%B2%BE%E4%BF%AE%E7%89%88.docx#_ftnref1\">[1]<\/a>\u00a0\u4f8b\u5982\uff1a\u5982\u679c\u9019\u4e0d\u662f\u95dc\u8aaa\uff0c\u90a3\u4ec0\u9ebc\u624d\u662f\u95dc\u8aaa\uff1f<\/p>\n<\/div>\n<div>\n<p><a title=\"\" href=\"file:\/\/\/C:\/Users\/ntucase\/Downloads\/%E3%80%90%E7%89%B9%E7%A8%BF%E3%80%91%E9%86%AB%E5%AD%B8%E5%BD%B1%E5%83%8F%E4%B8%AD%E7%9A%84%E6%95%B8%E5%AD%B8%20(1)1020102%E5%AE%87%E5%AE%B8%E8%80%81%E5%B8%AB%E7%B2%BE%E4%BF%AE%E7%89%88.docx#_ftnref2\">[2]<\/a>\u00a0\u8209\u4f8b\u800c\u8a00\uff0c\u96fb\u8a71\u6309\u9375\u300c1\u300d\u5c31\u662f\u7531697Hz\u548c1209Hz\u7684sin\u6ce2\u6240\u5408\u6210\u7684\u8072\u6ce2\u3002<\/p>\n<p>&nbsp;<\/p>\n<\/div>\n<p>&nbsp;<\/p>\n<pre>---\r\n \u672c\u6587\u6574\u7406\u81ea\uff1a102\/12\/21\u4e0b\u5348\u7531\u8212\u5b87\u5bb8\u8001\u5e2b\u5728\u81fa\u5927\u61c9\u529b\u6240\u570b\u969b\u6f14\u8b1b\u5ef3\u6240\u4e3b\u8b1b\u4e4b\u300c\u91ab\u5b78\u5f71\u50cf\u4e2d\u7684\u6578\u5b78\u300d\u7684\u6f14\u8b1b\u5167\u5bb9<\/pre>\n<pre> \u5ef6\u4f38\u95b1\u8b80\uff1a\u81fa\u5927\u79d1\u5b78\u6559\u80b2\u767c\u5c55\u4e2d\u5fc3\u63a2\u7d22\u57fa\u790e\u79d1\u5b78\u8b1b\u5ea72013\u5e7412\u670821\u65e5\u7b2c\u516b\u8b1b\u3008\u91ab\u5b78\u5f71\u50cf\u4e2d\u7684\u6578\u5b78\u3009<a href=\"https:\/\/case.ntu.edu.tw\/CASTUDIO\/course.php?speech_ID=3485\" target=\"_blank\" rel=\"noopener noreferrer\">\u5168\u7a0b\u5f71\u97f3<\/a><\/pre>\n<p><strong>\u8cac\u4efb\u7de8\u8f2f\uff1aVita Chen<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7b2c\u516b\u8b1b\u2027\u7279\u7a3f 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