{"id":109549,"date":"2026-09-24T12:25:18","date_gmt":"2026-09-24T04:25:18","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/109549.html"},"modified":"2026-09-24T12:25:18","modified_gmt":"2026-09-24T04:25:18","slug":"%e4%b8%80%e6%ae%b5%e8%af%ad%e9%9f%b3%e6%98%af%e5%a6%82%e4%bd%95%e8%bf%9b%e5%85%a5%e4%ba%ba%e5%b7%a5%e7%a5%9e%e7%bb%8f%e7%bd%91%e7%bb%9c%e7%9a%84%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/109549.html","title":{"rendered":"\u4e00\u6bb5\u8bed\u97f3\u662f\u5982\u4f55\u8fdb\u5165\u4eba\u5de5\u795e\u7ecf\u7f51\u7edc\u7684\uff1f"},"content":{"rendered":"<p><span style=\"color:#ff0000\">\u4e00\u6bb5\u8bed\u97f3\u662f\u5982\u4f55\u8fdb\u5165\u4eba\u5de5\u795e\u7ecf\u7f51\u7edc\u7684&#xff1f;<\/span><\/p>\n<p style=\"margin-left:0.00pt;text-align:left\"><span style=\"color:#000000\">\u8bed\u97f3\u4eba\u5de5\u795e\u7ecf\u7f51\u7edc\u7684\u524d\u7aef\u5904\u7406\u662f\u8bed\u97f3\u8bc6\u522b\u3001\u8bed\u97f3\u5408\u6210\u3001\u8bed\u97f3\u589e\u5f3a\u7b49\u4efb\u52a1\u4e2d\u7684\u5173\u952e\u73af\u8282\u3002<\/span><\/p>\n<p style=\"margin-left:0.00pt;text-align:left\"><span style=\"color:#000000\">\u524d\u7aef\u5904\u7406\u5305\u62ec&#xff1a;<\/span><span style=\"color:#ff0000\">\u8bed\u97f3\u9884\u5904\u7406<\/span> <span style=\"color:#ff0000\">\u7279\u5f81\u63d0\u53d6<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"463\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260924042511-6ab4a627d68b0.png\" width=\"630\" \/><\/p>\n<p>\u56fe1\u3001\u8bed\u97f3\u8f93\u5165\u5230Transformer\u4e2d<\/p>\n<p>\u8bed\u97f3\u9884\u5904\u7406\u5927\u81f4\u603b\u6d41\u7a0b\u5982\u56fe&#xff1a;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"604\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260924042512-6ab4a62881f2b.png\" width=\"1020\" \/><\/p>\n<p>\u56fe2\u3001\u8bed\u97f3\u9884\u5904\u7406\u6846\u67b6<\/p>\n<p style=\"margin-left:22.50pt;text-align:left\"><span style=\"color:#000000\">\u4e00&#xff0c;\u8bed\u97f3\u9884\u5904\u7406<\/span><\/p>\n<p style=\"margin-left:22.50pt;text-align:left\"><span style=\"color:#000000\">1\u3001\u9884\u52a0\u91cd<\/span><\/p>\n<p style=\"margin-left:22.50pt;text-align:left\"><span style=\"color:#000000\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u8bed\u97f3\u4fe1\u53f7\u901a\u8fc7\u53d1\u58f0\u8005\u7684\u53e3\u5507\u8f90\u5c04\u4f20\u64ad&#xff0c;\u7a7a\u6c14\u4f5c\u4e3a\u4f20\u64ad\u4ecb\u8d28&#xff0c;\u5728\u4f20\u9012\u58f0\u97f3\u80fd\u91cf\u7684\u540c\u65f6\u4f1a\u5bfc\u81f4\u4e00\u5b9a\u7684\u80fd\u91cf\u635f\u8017\u3002<\/span><span style=\"color:#ff0000\">\u7279\u522b\u662f\u9ad8\u9891\u6210\u5206<\/span><span style=\"color:#000000\">&#xff0c;\u56e0\u4ecb\u8d28\u7684\u8870\u51cf\u6548\u5e94\u635f\u5931\u66f4\u4e3a\u663e\u8457\u3002\u9884\u52a0\u91cd\u6280\u672f\u901a\u8fc7<\/span><span style=\"color:#ff0000\">\u589e\u5f3a\u8bed\u97f3\u4fe1\u53f7\u4e2d\u7684\u9ad8\u9891\u6210\u5206<\/span><span style=\"color:#000000\">&#xff0c;\u6709\u6548\u5f25\u8865\u9ad8\u9891\u635f\u8017&#xff0c;<\/span><span style=\"color:#ff0000\">\u4ece\u800c\u66f4\u597d\u5730\u4fdd\u62a4\u58f0\u9053\u4e2d\u8574\u542b\u7684\u4fe1\u606f\u3002<\/span><\/p>\n<p style=\"margin-left:22.50pt;text-align:left\"><span style=\"color:#000000\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5047\u8bbe\u8f93\u5165\u4fe1\u53f7\u7b2c &#x1d45b;\u4e2a\u91c7\u6837\u70b9\u4e3a &#x1d465;[n]&#xff0c;<\/span><span style=\"color:#000000\">a<\/span><span style=\"color:#000000\">\u4e3a\u9884\u52a0\u91cd\u7cfb\u6570&#xff0c;\u5219\u8f93\u51fa<\/span><span style=\"color:#000000\">y[n]<\/span><span style=\"color:#000000\">\u516c\u5f0f\u5982\u4e0b&#xff1a;<\/span><\/p>\n<p style=\"margin-left:22.50pt;text-align:left\"><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"27\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260924042512-6ab4a628bc156.png\" width=\"249\" \/><\/p>\n<p style=\"margin-left:22.50pt;text-align:left\"><span style=\"color:#000000\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5bf9\u5e94\u7684\u4f20\u9012\u51fd\u6570\u4e3a&#xff1a;<\/span><\/p>\n<p style=\"margin-left:22.50pt;text-align:left\"><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"30\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260924042512-6ab4a628cf485.png\" width=\"122\" \/><\/p>\n<p style=\"margin-left:22.50pt;text-align:left\"><span style=\"color:#000000\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u9891\u7387\u54cd\u5e94\u4e3a&#xff08;f<\/span><span style=\"color:#000000\">\u4e3a\u9891\u7387&#xff0c;<\/span><span style=\"color:#000000\">fs<\/span><span style=\"color:#000000\">\u4e3a\u91c7\u6837\u7387&#xff09;&#xff1a;<\/span><\/p>\n<p style=\"margin-left:22.50pt;text-align:left\"><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"30\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260924042512-6ab4a628e0176.png\" width=\"167\" \/><\/p>\n<p style=\"margin-left:22.50pt;text-align:left\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u4e0b\u56fe<span style=\"color:#000000\">\u662f\u9884\u52a0\u91cd\u6ee4\u6ce2\u5668\u5bf9\u4e0d\u540c\u9891\u7387\u6210\u5206\u7684\u5f71\u54cd\u7a0b\u5ea6\u3002\u589e\u76ca\u53cd\u6620\u4e86\u5728\u7279\u5b9a\u9891\u7387\u4e0b&#xff0c;\u9884\u52a0\u91cd\u6ee4\u6ce2\u5668\u5bf9\u4fe1\u53f7\u7684\u653e\u5927\u6216\u8870\u51cf\u7a0b\u5ea6\u3002\u5b83\u662f\u9891\u7387\u54cd\u5e94\u7684\u5e45\u503c&#xff08;\u5927\u5c0f&#xff09;\u5728\u5bf9\u6570\u5c3a\u5ea6\u4e0a\u7684\u8868\u793a\u3002<\/span><\/p>\n<p style=\"margin-left:22.50pt;text-align:left\">\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"333\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260924042512-6ab4a628f200f.png\" width=\"444\" \/><\/p>\n<p>\u56fe3\u3001\u9884\u52a0\u91cd\u5bf9\u8bed\u97f3\u4fe1\u53f7\u4e0d\u540c\u9891\u7387\u7684\u589e\u76ca<\/p>\n<p style=\"margin-left:0.00pt;text-align:left\"><span style=\"color:#000000\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5728 Matlab \u4e2d\u5b9e\u73b0\u8bed\u97f3\u9884\u52a0\u91cd&#xff1a;<\/span><\/p>\n<p>#\u8bfb\u53d6\u97f3\u9891&#xff0c;\u91c7\u6837\u7387<br \/>\n[audioIn, fs] &#061; audioread(&#039;voice_test.wav&#039;);<br \/>\n#\u9884\u52a0\u91cd<br \/>\npre_emphasis &#061; 0.97;<br \/>\ny_preemphasized &#061; filter([1 -pre_emphasis], 1, audioIn);<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"525\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260924042513-6ab4a6291c610.png\" width=\"700\" \/><\/p>\n<p>\u56fe4\u3001\u9884\u52a0\u91cd\u5bf9\u8bed\u97f3\u4fe1\u53f7\u9891\u8c31\u7684\u6539\u53d8<\/p>\n<p style=\"margin-left:22.50pt;text-align:left\">2\u3001\u5206\u5e27<\/p>\n<p style=\"margin-left:22.50pt;text-align:left\"><span style=\"color:#000000\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u7b97\u6cd5\u5728\u5904\u7406\u8bed\u97f3\u4fe1\u53f7\u65f6&#xff0c;\u4e00\u822c\u9996\u5148\u91c7\u7528\u7684\u662f\u5085\u91cc\u53f6\u53d8\u5316&#xff0c;\u5c06<\/span><span style=\"color:#ff0000\">\u8bed\u97f3\u4fe1\u53f7\u7531\u65f6\u57df\u8f6c\u6362\u5230\u9891\u57df\u7a7a\u95f4<\/span><span style=\"color:#000000\">\u3002\u4f46\u662f\u76f4\u63a5\u5904\u7406\u957f\u65f6\u95f4\u7684\u975e\u5e73\u7a33\u4fe1\u53f7\u4f1a\u975e\u5e38\u56f0\u96be&#xff0c;\u4e14\u96be\u4ee5\u63d0\u53d6\u7a33\u5b9a\u7684\u7279\u5f81\u3002<\/span><\/p>\n<p style=\"margin-left:22.50pt;text-align:left\"><span style=\"color:#000000\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u7531\u4e8e<\/span><span style=\"color:#ff0000\">\u77ed\u65f6\u5e73\u7a33\u6027&#xff0c;<\/span><span style=\"color:#000000\">\u5373\u5728\u4e00\u4e2a\u8f83\u5c0f\u7684\u65f6\u95f4\u7a97\u53e3&#xff08;\u901a\u5e38\u662f 20-40 \u6beb\u79d2&#xff09;\u5185&#xff0c;\u4fe1\u53f7\u7684\u7edf\u8ba1\u7279\u6027\u76f8\u5bf9\u7a33\u5b9a\u3002\u56e0\u6b64&#xff0c;\u901a\u8fc7\u5c06\u957f\u8bed\u97f3\u4fe1\u53f7\u5206\u5e27\u5904\u7406&#xff08;\u5373\u5c06\u4fe1\u53f7\u5206\u6210\u77ed\u7684\u65f6\u95f4\u6bb5\u8fdb\u884c\u5206\u6790&#xff09;&#xff0c;\u53ef\u4ee5\u4f7f\u5f97\u6bcf\u4e2a\u5e27\u5185\u7684\u4fe1\u53f7\u8fd1\u4f3c\u5e73\u7a33\u3002<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"252\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260924042513-6ab4a6293c52c.png\" width=\"678\" \/><\/p>\n<p>\u56fe5\u3001\u5206\u5e27\u793a\u610f\u56fe<\/p>\n<p style=\"margin-left:22.50pt;text-align:left\">\n<p style=\"margin-left:0.00pt;text-align:left\"><span style=\"color:#000000\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5206\u5e27\u540e&#xff0c;\u901a\u8fc7\u6ed1\u52a8\u7a97\u53e3\u5bf9\u8bed\u97f3\u4fe1\u53f7\u8fdb\u884c\u5206\u6790&#xff0c;\u53ef\u4ee5\u5b9e\u65f6\u5730\u5bf9\u4fe1\u53f7\u8fdb\u884c\u5904\u7406\u3002<\/span><\/p>\n<p style=\"margin-left:0.00pt;text-align:left\"><span style=\"color:#000000\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u4e3a\u4e86\u4fdd\u8bc1\u5728\u5e27\u4e4b\u95f4\u4e0d\u4f1a\u4e22\u5931\u91cd\u8981\u4fe1\u606f&#xff0c;\u901a\u5e38\u4f1a\u5728\u5206\u5e27\u65f6\u8bbe\u7f6e\u4e00\u5b9a\u7684<\/span><span style=\"color:#ff0000\">\u5e27\u91cd\u53e0&#xff08;\u901a\u5e38\u662f 50% \u5de6\u53f3\u7684\u91cd\u53e0&#xff09;<\/span><span style=\"color:#000000\">\u3002\u8fd9\u610f\u5473\u7740\u76f8\u90bb\u5e27\u4e4b\u95f4\u4f1a\u5171\u4eab\u4e00\u90e8\u5206\u6837\u672c&#xff0c;\u786e\u4fdd\u4fe1\u53f7\u7684\u8fde\u7eed\u6027&#xff0c;\u5c24\u5176\u662f\u5728\u5feb\u901f\u53d8\u5316\u7684\u5730\u65b9\u4e0d\u4f1a\u4e22\u5931\u5173\u952e\u4fe1\u606f\u3002<\/span><\/p>\n<p style=\"margin-left:0.00pt;text-align:left\"><span style=\"color:#000000\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5728Matlab<\/span><span style=\"color:#000000\">\u4e2d\u5b9e\u73b0\u8bed\u97f3\u5206\u5e27\u5904\u7406&#xff1a;<\/span><\/p>\n<p>#\u5b9a\u4e49\u5e27\u957f\u5ea6\u548c\u6b65\u957f<br \/>\nframe_length &#061; round(0.025 * fs); % 25 ms \u7a97\u957f\u5ea6<br \/>\nframe_step &#061; round(0.010 * fs);   % 10 ms \u6b65\u957f<br \/>\n#\u8ba1\u7b97\u5e27\u6570<br \/>\nnum_frames &#061; floor((length(y_preemphasized) &#8211; frame_length) \/ frame_step) &#043; 1;<br \/>\n#\u521d\u59cb\u5316\u5e27\u77e9\u9635<br \/>\nframes &#061; zeros(frame_length, num_frames);<br \/>\n#\u5206\u5e27\u64cd\u4f5c&#xff1a;\u5c06\u4fe1\u53f7\u9010\u5e27\u5212\u5206\u5e76\u5b58\u50a8\u5230\u5e27\u77e9\u9635\u4e2d\u3002<br \/>\nfor i &#061; 1:num_frames<br \/>\n    start_idx &#061; (i-1) * frame_step &#043; 1;<br \/>\n    end_idx &#061; start_idx &#043; frame_length &#8211; 1;<br \/>\n    frames(:, i) &#061; y_preemphasized(start_idx:end_idx);<br \/>\nend<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"525\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260924042513-6ab4a6295911b.png\" width=\"700\" \/><\/p>\n<p>\u56fe6\u3001\u5206\u5e27\u7ed3\u679c<\/p>\n<p style=\"margin-left:22.50pt;text-align:left\">3\u3001\u52a0\u7a97<\/p>\n<p style=\"margin-left:22.50pt;text-align:left\"><span style=\"color:#000000\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u52a0\u7a97\u662f\u4e00\u79cd\u5728\u4fe1\u53f7\u622a\u65ad\u524d\u5bf9\u5176\u8fdb\u884c\u9884\u5904\u7406\u7684\u65b9\u6cd5&#xff0c;\u901a\u8fc7\u5728\u65f6\u57df\u4e0a\u4e58\u4ee5\u4e00\u4e2a\u7a97\u51fd\u6570&#xff0c;\u53ef\u4ee5\u4f7f\u5f97\u4fe1\u53f7\u5728\u622a\u65ad\u5904\u7684\u53d8\u5316\u66f4\u52a0\u5e73\u6ed1&#xff0c;\u51cf\u5c0f\u7531\u52a0\u77e9\u5f62\u7a97\u5f15\u8d77\u7684\u622a\u65ad\u6548\u5e94&#xff0c;\u4ece\u800c\u51cf\u5c11\u7531\u9891\u8c31\u6cc4\u6f0f\u3002<\/span><\/p>\n<p style=\"margin-left:22.50pt;text-align:left\"><span style=\"color:#000000\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5728 Matlab \u4e2d\u5b9e\u73b0\u8bed\u97f3\u52a0\u7a97\u5904\u7406&#xff1a;<\/span><\/p>\n<p>#\u6c49\u660e\u7a97<br \/>\nwindow &#061; hamming(frame_length);<br \/>\nframes_windowed &#061; frames .* window;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"525\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260924042513-6ab4a62979ae9.png\" width=\"700\" \/><\/p>\n<p>\u56fe7\u3001\u5206\u5e27\u52a0\u7a97\u7ed3\u679c<\/p>\n<p style=\"margin-left:22.50pt;text-align:left\">4\u3001\u7aef\u70b9\u68c0\u6d4b<\/p>\n<p style=\"margin-left:22.50pt;text-align:left\"><span style=\"color:#000000\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u8bed\u97f3\u9884\u5904\u7406\u4e2d\u7684<\/span><span style=\"color:#ff0000\">\u7aef\u70b9\u68c0\u6d4b<\/span><span style=\"color:#000000\">&#xff08;Endpoint Detection, EPD&#xff09;\u662f\u6307\u5728\u8bed\u97f3\u4fe1\u53f7\u4e2d\u786e\u5b9a\u8bed\u97f3\u7684<\/span><span style=\"color:#ff0000\">\u6709\u6548\u90e8\u5206<\/span><span style=\"color:#000000\">&#xff08;\u5373\u8bed\u97f3\u6d3b\u52a8\u533a\u57df&#xff09;\u548c<\/span><span style=\"color:#ff0000\">\u65e0\u6548\u90e8\u5206<\/span><span style=\"color:#000000\">&#xff08;\u5982\u9759\u97f3\u6216\u80cc\u666f\u566a\u58f0&#xff09;\u7684\u8fc7\u7a0b\u3002<\/span><\/p>\n<p style=\"margin-left:22.50pt;text-align:left\"><span style=\"color:#ff0000\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u77ed\u65f6\u80fd\u91cf<\/span><span style=\"color:#000000\">&#xff08;<\/span><span style=\"color:#000000\">STE<\/span><span style=\"color:#000000\">&#xff09;<\/span><span style=\"color:#000000\">:\u5373\u4e00\u5e27\u8bed\u97f3\u4fe1\u53f7\u7684\u80fd\u91cf<\/span><span style=\"color:#000000\">&#xff0c;\u8bed\u97f3\u4fe1\u53f7\u7684\u77ed\u65f6\u80fd\u91cf\u901a\u5e38\u6bd4\u9759\u97f3\u6bb5\u6216\u566a\u58f0\u6bb5\u5927&#xff0c;\u53ef\u4ee5\u7528\u80fd\u91cf\u53d8\u5316\u68c0\u6d4b\u8bed\u97f3\u7684\u8d77\u6b62\u70b9\u3002<\/span><\/p>\n<p style=\"margin-left:22.50pt;text-align:left\"><span style=\"color:#000000\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5176\u4e2d x(n) \u4e3a\u7b2c n \u5e27\u7684\u4fe1\u53f7&#xff0c;N \u4e3a\u5e27\u957f\u3002<\/span><\/p>\n<p style=\"margin-left:22.50pt;text-align:left\"><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"39\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260924042513-6ab4a6299a1bd.png\" width=\"190\" \/><\/p>\n<p style=\"margin-left:22.50pt;text-align:left\"><span style=\"color:#ff0000\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u77ed\u65f6\u8fc7\u96f6\u7387<\/span><span style=\"color:#000000\">&#xff08;ZCR&#xff09;&#xff1a;\u8fc7\u96f6\u7387\u8868\u793a\u4fe1\u53f7\u8fc7\u96f6\u70b9\u7684\u6b21\u6570&#xff0c;\u8bed\u97f3\u6bb5\u901a\u5e38\u6bd4\u566a\u58f0\u6bb5\u7684\u8fc7\u96f6\u7387\u4f4e\u3002\u7279\u522b\u662f\u5143\u97f3\u6bb5\u8fc7\u96f6\u7387\u8f83\u4f4e&#xff0c;\u800c\u8f85\u97f3\u6bb5\u8f83\u9ad8\u3002<\/span><\/p>\n<p style=\"margin-left:0.00pt;text-align:left\"><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"52\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260924042513-6ab4a629ac3d3.png\" width=\"367\" \/><\/p>\n<p style=\"margin-left:0.00pt;text-align:left\"><span style=\"color:#000000\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5176\u4e2d sgn \u8868\u793a\u7b26\u53f7\u51fd\u6570\u3002<\/span><\/p>\n<ul>\n<li style=\"margin-left: 0pt;text-align: left\"><span style=\"color:#000000\">\u9ad8\u80fd\u91cf\u4e14\u4f4e\u8fc7\u96f6\u7387&#xff1a;\u8bed\u97f3\u6bb5&#xff08;\u5143\u97f3&#xff09;\u3002<\/span><\/li>\n<li style=\"margin-left: 0pt;text-align: left\"><span style=\"color:#000000\">\u9ad8\u80fd\u91cf\u4e14\u9ad8\u8fc7\u96f6\u7387&#xff1a;\u8bed\u97f3\u6bb5&#xff08;\u8f85\u97f3&#xff09;\u3002<\/span><\/li>\n<li style=\"margin-left: 0pt;text-align: left\"><span style=\"color:#000000\">\u4f4e\u80fd\u91cf\u4e14\u4f4e\u8fc7\u96f6\u7387&#xff1a;\u9759\u97f3\u6bb5\u3002<\/span><\/li>\n<li style=\"margin-left: 0pt;text-align: left\"><span style=\"color:#000000\">\u4f4e\u80fd\u91cf\u4e14\u9ad8\u8fc7\u96f6\u7387&#xff1a;\u566a\u58f0\u6bb5\u3002<\/span><\/li>\n<\/ul>\n<p style=\"margin-left:0.00pt;text-align:left\"><span style=\"color:#000000\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5f53\u7136\u8fd8\u6709\u5f88\u591a\u65b9\u6cd5\u6bd4\u5982&#xff1a;\u4f20\u7edf\u673a\u5668\u5b66\u4e60\u65b9\u6cd5\u91cc\u9762\u7684 SVM \u5206\u7c7b\u5668&#xff0c;\u9ad8\u65af\u6df7\u5408\u6a21\u578b&#xff08;GMM&#xff09;&#xff0c;\u8fd8\u6709\u6df1\u5ea6\u5b66\u4e60\u65b9\u6cd5&#xff0c;\u5229\u7528\u795e\u7ecf\u7f51\u7edc\u5bf9\u4fe1\u53f7\u8fdb\u884c\u5206\u7c7b\u3002<\/span><\/p>\n<p style=\"margin-left:0.00pt;text-align:left\"><span style=\"color:#000000\">5\u3001\u566a\u58f0\u6291\u5236<\/span><\/p>\n<p style=\"margin-left:0.00pt;text-align:left\"><span style=\"color:#000000\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5b9e\u9645\u91c7\u96c6\u5230\u7684\u97f3\u9891\u901a\u5e38\u4f1a\u6709\u4e00\u5b9a\u5f3a\u5ea6\u7684\u80cc\u666f\u97f3&#xff0c;\u8fd9\u4e9b\u80cc\u666f\u97f3\u4e00\u822c\u662f\u80cc\u666f\u566a\u97f3&#xff0c;\u5f53\u80cc\u666f\u566a\u97f3\u5f3a\u5ea6\u8f83\u5927\u65f6&#xff0c;\u4f1a\u5bf9\u8bed\u97f3\u5e94\u7528\u7684\u6548\u679c\u4ea7\u751f\u660e\u663e\u7684\u5f71\u54cd&#xff0c;\u6bd4\u5982\u8bed\u97f3\u8bc6\u522b\u7387\u964d\u4f4e&#xff0c;\u7aef\u70b9\u68c0\u6d4b\u7075\u654f\u5ea6\u4e0b\u964d\u7b49&#xff0c;\u56e0\u6b64&#xff0c;\u5728\u8bed\u97f3\u7684\u524d\u7aef\u5904\u7406\u4e2d&#xff0c;\u8fdb\u884c\u566a\u58f0\u6291\u5236\u4e5f\u662f\u662f\u5f88\u6709\u5fc5\u8981\u7684\u3002<\/span><\/p>\n<p style=\"margin-left:0.00pt;text-align:left\"><span style=\"color:#000000\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u8c31\u51cf\u6cd5&#xff08;Spectral Subtraction&#xff09;&#xff1a;\u5728\u9891\u8c31\u57df\u4e2d\u51cf\u53bb\u566a\u58f0\u9891\u8c31\u6765\u6291\u5236\u566a\u58f0&#xff0c;\u4fdd\u7559\u8bed\u97f3\u4fe1\u53f7\u3002<\/span><\/p>\n<li style=\"margin-left:0pt;text-align:left\"><span style=\"color:#000000\">\u00a0\u9996\u5148\u5c06\u65f6\u95f4\u57df\u7684\u6df7\u5408\u4fe1\u53f7 x(t) \u8f6c\u6362\u5230\u9891\u8c31\u57df&#xff1b;<\/span><\/li>\n<li style=\"margin-left:0pt;text-align:left\"><span style=\"color:#000000\">\u901a\u8fc7<\/span><span style=\"color:#ff0000\">\u7aef\u70b9\u68c0\u6d4b<\/span><span style=\"color:#000000\">\u786e\u5b9a\u7684\u9759\u97f3\u6bb5\u63d0\u53d6\u566a\u58f0\u4fe1\u53f7\u5e76\u8ba1\u7b97\u9759\u97f3\u6bb5\u7684\u5e73\u5747\u529f\u7387\u8c31&#xff1b;<\/span><\/li>\n<li style=\"margin-left:0pt;text-align:left\"><span style=\"color:#000000\">\u5728\u539f\u59cb\u4fe1\u53f7\u9891\u8c31\u4e2d<\/span><span style=\"color:#ff0000\">\u51cf\u53bb<\/span><span style=\"color:#000000\">\u566a\u58f0\u5e73\u5747\u8c31\u5e76\u5e73\u6ed1\u5904\u7406\u4ee5\u51cf\u5c11\u97f3\u4e50\u566a\u58f0&#xff1b;<\/span><\/li>\n<li style=\"margin-left:0pt;text-align:left\"><span style=\"color:#000000\">\u9006\u77ed\u65f6\u5085\u91cc\u53f6\u53d8\u6362&#xff08;iSTFT&#xff09;\u5c06\u9891\u57df\u8f6c\u4e3a\u65f6\u57df\u3002<\/span>\n<li style=\"margin-left:0pt;text-align:left\">\n<img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"1287\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260924042513-6ab4a629c14fe.png\" width=\"2560\" \/><\/p>\n<p>\u56fe8\u3001\u8c31\u51cf\u6cd5\u566a\u58f0\u6291\u5236\u5168\u6d41\u7a0b<\/p>\n<\/li>\n<\/li>\n<p style=\"margin-left:0.00pt;text-align:left\"><span style=\"color:#000000\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5176\u4ed6\u7684\u65b9\u6cd5\u8fd8\u6709&#xff1a;\u6ee4\u6ce2\u7684\u65b9\u6cd5&#xff0c;\u6df1\u5ea6\u5b66\u4e60\u65f6\u9891\u63a9\u853d\u7684\u65b9\u6cd5&#xff0c;\u8fd8\u6709\u7279\u5f81\u7a7a\u95f4\u901a\u8fc7\u7279\u5f81\u7ea7\u964d\u566a&#xff0c;<\/span><\/p>\n<p style=\"margin-left:0.00pt;text-align:left\">\u4e8c\u3001\u7279\u5f81\u63d0\u53d6<\/p>\n<p style=\"margin-left:0.00pt;text-align:left\">1\u3001\u8bed\u8c31\u56fe\u3001<\/p>\n<p style=\"margin-left:0.00pt;text-align:left\"><span style=\"color:#000000\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u58f0\u97f3\u4fe1\u53f7\u672c\u662f<\/span><span style=\"color:#ff0000\">\u4e00\u7ef4\u7684\u65f6\u57df\u4fe1\u53f7<\/span><span style=\"color:#000000\">&#xff0c;\u76f4\u89c2\u4e0a\u5f88\u96be\u770b\u51fa\u9891\u7387\u53d8\u5316\u89c4\u5f8b\u3002\u5085\u91cc\u53f6\u53d8\u6362\u53ef\u628a\u5b83\u53d8\u5230\u9891\u57df\u4e0a&#xff0c;\u867d\u7136\u53ef\u770b\u51fa\u4fe1\u53f7\u7684\u9891\u7387\u5206\u5e03&#xff0c;\u4f46\u662f\u4e22\u5931\u4e86\u65f6\u57df\u4fe1\u606f&#xff0c;\u65e0\u6cd5\u770b\u51fa\u9891\u7387\u5206\u5e03\u968f\u65f6\u95f4\u7684\u53d8\u5316\u3002\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898&#xff0c;\u5f88\u591a<\/span><span style=\"color:#ff0000\">\u65f6\u9891\u5206\u6790<\/span><span style=\"color:#000000\">\u624b\u6bb5\u5e94\u8fd0\u800c\u751f&#xff0c;\u5982\u77ed\u65f6\u5085\u91cc\u53f6&#xff0c;\u5c0f\u6ce2&#xff0c;Wigner\u5206\u5e03\u7b49\u90fd\u662f\u5e38\u7528\u7684\u65f6\u9891\u57df\u5206\u6790\u65b9\u6cd5\u3002<\/span><\/p>\n<p style=\"margin-left:0.00pt;text-align:left\"><span style=\"color:#ff0000\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u8bed\u8c31\u56fe<\/span><span style=\"color:#000000\">&#xff1a;\u8868\u793a<\/span><span style=\"color:#ff0000\">\u8bed\u97f3\u9891\u8c31\u968f\u65f6\u95f4\u53d8\u5316<\/span><span style=\"color:#000000\">\u7684\u56fe\u5f62&#xff0c;\u5176\u7eb5\u8f74\u4e3a\u9891\u7387&#xff0c;\u6a2a\u8f74\u4e3a\u65f6\u95f4&#xff0c;\u989c\u8272\u7684\u6df1\u6d45\u8868\u793a\u80fd\u91cf\u7684\u5927\u5c0f\u3002<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"221\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260924042515-6ab4a62b1d537.png\" width=\"1118\" \/><\/p>\n<p>\u56fe9\u3001\u8bed\u8c31\u56fe<\/p>\n<p style=\"margin-left:22.50pt;text-align:left\"><span style=\"color:#000000\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u628a\u4e00\u6bb5\u957f\u4fe1\u53f7<\/span><span style=\"color:#ff0000\">\u5206\u5e27\u3001\u52a0\u7a97<\/span><span style=\"color:#000000\">&#xff0c;\u518d\u5bf9<\/span><span style=\"color:#ff0000\">\u6bcf\u4e00\u5e27\u505a\u5085\u91cc\u53f6\u53d8\u6362&#xff08;FFT&#xff09;<\/span><span style=\"color:#000000\">&#xff0c;\u6700\u540e\u628a<\/span><span style=\"color:#ff0000\">\u6bcf\u4e00\u5e27\u7684\u7ed3\u679c\u6cbf\u53e6\u4e00\u4e2a\u7ef4\u5ea6&#xff08;\u9891\u57df&#xff09;\u5806\u53e0\u8d77\u6765<\/span><span style=\"color:#000000\">&#xff08;\u65cb\u8f6c90\u5ea6&#xff09;&#xff0c;\u5f97\u5230\u7c7b\u4f3c\u4e8e\u4e00\u5e45\u56fe\u7684\u4e8c\u7ef4\u4fe1\u53f7\u5f62\u5f0f\u3002\u7136\u540e\u628a\u8fd9\u4e9b\u5e45\u5ea6\u6620\u5c04\u5230\u4e00\u4e2a\u7070\u5ea6\u7ea7\u8868\u793a<\/span><\/p>\n<p style=\"margin-left:22.50pt;text-align:left\"><span style=\"color:#000000\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u6ce8\u610f&#xff1a;\u5e27\u957f&#xff1a;\u4f7f\u7528<\/span><span style=\"color:#40b0ff\">\u8f83\u77ed\u7684\u5e27<\/span><span style=\"color:#000000\">&#xff0c;\u5176\u5177\u6709<\/span><span style=\"color:#40b0ff\">\u8f83\u5bbd\u7684\u9891\u5e26<\/span><span style=\"color:#000000\">&#xff08;\u5bbd\u5e26\u8bed\u8c31\u56fe&#xff09;&#xff0c;<\/span><span style=\"color:#40b0ff\">\u8f83\u9ad8\u7684\u65f6\u95f4\u5206\u8fa8\u7387\u548c\u8f83\u4f4e\u7684\u9891\u7387\u5206\u8fa8\u7387<\/span><span style=\"color:#000000\">&#xff0c;\u800c\u5bf9\u4e8e<\/span><span style=\"color:#498659\">\u8f83\u957f\u7684\u5e27<\/span><span style=\"color:#000000\">&#xff0c;\u5219\u5177\u6709<\/span><span style=\"color:#498659\">\u8f83\u7a84\u7684\u9891\u5e26<\/span><span style=\"color:#000000\">&#xff08;\u7a84\u5e26\u8bed\u8c31\u56fe&#xff09;&#xff0c;<\/span><span style=\"color:#498659\">\u8f83\u4f4e\u7684\u65f6\u95f4\u5206\u8fa8\u7387\u548c\u8f83\u9ad8\u7684\u9891\u7387\u5206\u8fa8\u7387<\/span><\/p>\n<p style=\"margin-left:22.50pt;text-align:left\"><span style=\"color:#000000\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Matlab\u5b9e\u73b0\u753b\u8bed\u8c31\u56fe&#xff1a;<\/span><\/p>\n<p>#\u77ed\u65f6\u5085\u91cc\u53f6\u53d8\u6362 (STFT)<br \/>\nn_fft &#061; max(512, frame_length); # \u786e\u4fdd n_fft &gt;&#061; frame_length<br \/>\nstft_frames &#061; fft(frames_windowed, n_fft);<br \/>\n#\u8ba1\u7b97\u529f\u7387\u8c31<br \/>\npower_spectrum &#061; abs(stft_frames(1:n_fft\/2&#043;1, :)).^2; #\u53ea\u53d6\u6b63\u9891\u7387\u90e8\u5206<br \/>\n#\u8f6c\u6362\u4e3a\u5bf9\u6570\u5e45\u5ea6\u8c31 (dB)<br \/>\nlog_power_spectrum &#061; 10 * log10(power_spectrum &#043; eps); #\u52a0 eps \u907f\u514d\u5bf9\u6570\u96f6\u503c<br \/>\n# \u7ed8\u5236\u8bed\u8c31\u56fe<br \/>\ntime_axis &#061; (0:num_frames-1) * frame_step \/ fs; #\u65f6\u95f4\u8f74 (\u79d2)<br \/>\nfreq_axis &#061; (0:n_fft\/2) * fs \/ n_fft; #\u9891\u7387\u8f74 (Hz)<\/p>\n<p style=\"margin-left:0.00pt;text-align:left\"><span style=\"color:#ff0000\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u529f\u7387\u8c31<\/span><span style=\"color:#000000\">:\u5e45\u5ea6\u8c31 \u53ea\u53cd\u6620\u4e86\u4fe1\u53f7\u7684\u5e45\u5ea6\u4fe1\u606f&#xff0c;\u800c \u529f\u7387\u8c31&#xff08;\u5e45\u5ea6\u8c31\u7684\u5e73\u65b9&#xff09;\u53cd\u6620\u4e86\u4fe1\u53f7\u7684<\/span><span style=\"color:#ff0000\">\u80fd\u91cf\u5206\u5e03<\/span><span style=\"color:#000000\">\u3002<\/span><span style=\"color:#ff0000\">\u5bf9\u6570\u5e45\u5ea6\u8c31<\/span><span style=\"color:#000000\"> :\u4eba\u7c7b\u8033\u6735\u5bf9\u58f0\u97f3\u7684\u611f\u77e5\u662f <\/span><span style=\"color:#ff0000\">\u5bf9\u6570\u611f\u77e5<\/span><span style=\"color:#000000\"> \u7684&#xff0c;\u610f\u601d\u662f\u6211\u4eec\u542c\u5230\u7684\u58f0\u97f3\u5f3a\u5ea6\u53d8\u5316\u5e76\u4e0d\u4e0e\u58f0\u97f3\u5f3a\u5ea6\u7684\u7edd\u5bf9\u503c\u5448\u7ebf\u6027\u5173\u7cfb&#xff0c;\u800c\u662f\u4e0e\u58f0\u97f3\u5f3a\u5ea6\u7684\u5bf9\u6570\u6210\u6bd4\u4f8b\u3002\u4f4e\u5f3a\u5ea6\u7684\u58f0\u97f3\u548c\u9ad8\u5f3a\u5ea6\u7684\u58f0\u97f3\u4f1a\u66f4\u52a0\u63a5\u8fd1\u4eba\u8033\u7684\u611f\u77e5&#xff0c;\u4ece\u800c\u4f7f\u5f97<\/span><span style=\"color:#ff0000\">\u7279\u5f81\u63d0\u53d6\u548c\u6a21\u578b\u8bad\u7ec3\u66f4\u52a0\u6709\u6548<\/span><span style=\"color:#000000\">\u3002<\/span><\/p>\n<p style=\"margin-left:0.00pt;text-align:left\">\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"525\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260924042515-6ab4a62b517ca.png\" width=\"700\" \/><\/p>\n<p>\u56fe10\u3001\u771f\u5b9e\u8bed\u97f3\u7684\u8bed\u8c31\u56fe<\/p>\n<p style=\"margin-left:0.00pt;text-align:left\"><span style=\"color:#000000\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u8bed\u8c31\u56fe\u7684\u672c\u8d28\u5c31\u662f\u786e\u5b9a\u4e0d\u540c\u8bf4\u8bdd\u4eba\u58f0\u97f3\u7684\u672c\u6027\u3002\u6a2a\u5750\u6807\u4e3a\u65f6\u95f4&#xff0c;\u7eb5\u5750\u6807\u4e3a\u9891\u7387\u3002\u56fe\u4e2d\u7684\u6761\u7eb9\u79f0\u4e4b\u4e3a\u201c<\/span><span style=\"color:#ff0000\">\u58f0\u7eb9<\/span><span style=\"color:#000000\">\u201d&#xff0c;\u5b83\u56e0\u4eba\u800c\u5f02&#xff0c;\u5373\u53ef\u5229\u7528\u58f0\u7eb9\u9274\u522b\u4e0d\u540c\u7684\u8bf4\u8bdd\u4eba\u3002<\/span><\/p>\n<p style=\"margin-left:0.00pt;text-align:left\">\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"525\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260924042515-6ab4a62b74057.png\" width=\"700\" \/><\/p>\n<p>\u56fe11\u3001\u4e00\u5bbd\u4e00\u7a84\u8bed\u8c31\u56fe<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5206\u522b\u5c55\u793a\u4e86\u4e00\u6761\u8bed\u97f3\u53e5\u5b50\u7684\u7a84\u5e26\u8bed\u8c31\u56fe\u548c\u5bbd\u5e26\u8bed\u8c31\u56fe\u3002\u77ed\u65f6\u7a97\u957f\u5ea6\u5206\u522b\u662f50ms\u548c2ms\u3002<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5bbd\u5e26&#xff1a;\u90fd\u662f\u7ad6\u7eb9&#xff0c;\u65f6\u95f4\u5206\u8fa8\u7387\u9ad8\u3002<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u7a84\u5e26&#xff1a;\u90fd\u662f\u6a2a\u7eb9&#xff0c;\u9891\u7387\u5206\u8fa8\u7387\u9ad8\u3002<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u6a2a\u7eb9\u662f\u4e0e\u65f6\u95f4\u8f74\u5e73\u884c\u7684\u51e0\u6761\u6df1\u8272\u5e26\u7eb9&#xff0c;\u5b83\u4eec\u76f8\u5e94\u4e8e\u77ed\u65f6\u8c31\u4e2d\u7684\u51e0\u4e2a\u51f8\u70b9&#xff0c;\u4e5f\u5c31\u662f\u5171\u632f\u5cf0<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u7ad6\u7eb9&#xff0c;\u662f\u4e0e\u65f6\u95f4\u8f74\u5782\u76f4\u7684\u4e00\u6761\u6761&#xff0c;\u6bcf\u4e2a\u7ad6\u76f4\u6761\u76f8\u5f53\u4e8e\u4e00\u4e2a\u57fa\u97f3&#xff0c;\u6761\u7eb9\u7684\u8d77\u70b9\u76f8\u5f53\u4e8e\u58f0\u95e8\u8109\u51b2\u7684\u8d77\u70b9&#xff0c;\u6761\u7eb9\u4e4b\u95f4\u7684\u8ddd\u79bb\u4ee3\u8868\u57fa\u97f3\u5468\u671f&#xff0c;\u6761\u7eb9\u8d8a\u5bc6\u8bf4\u660e\u57fa\u97f3\u9891\u7387\u8d8a\u9ad8\u3002<\/p>\n<p>2\u3001\u6885\u5c14\u5012\u8c31<\/p>\n<p><span style=\"color:#000000\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u4eba\u8033\u5bf9\u9891\u7387\u7684\u611f\u77e5\u662f\u975e\u7ebf\u6027\u7684\u3002\u4f4e\u9891\u90e8\u5206&#xff08;\u4f8b\u598220 Hz \u5230 1000 Hz&#xff09;\u6211\u4eec\u80fd\u591f\u66f4\u52a0\u654f\u611f\u5730\u611f\u77e5\u9891\u7387\u5dee\u5f02&#xff0c;\u800c\u5728\u9ad8\u9891\u90e8\u5206&#xff08;\u59821000 Hz \u5230 10000 Hz&#xff09;\u6211\u4eec\u5bf9\u9891\u7387\u53d8\u5316\u7684\u654f\u611f\u5ea6\u5219\u4f1a\u9010\u6e10\u4e0b\u964d\u3002<\/span><\/p>\n<p style=\"margin-left:0.00pt;text-align:left\"><span style=\"color:#000000\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u6885\u5c14\u5c3a\u5ea6\u901a\u8fc7\u5bf9\u6570\u53d8\u6362\u6765\u6a21\u62df\u8fd9\u79cd\u611f\u77e5\u7279\u6027&#xff0c;\u5b83\u80fd<\/span><span style=\"color:#7030a0\">\u66f4\u597d\u5730\u6a21\u62df\u4eba\u8033\u5bf9\u9891\u7387\u7684\u611f\u77e5\u65b9\u5f0f&#xff0c;<\/span><span style=\"color:#000000\">\u5c06\u9891\u7387\u8f6c\u6362\u5230\u4e00\u4e2a\u5bf9\u4eba\u8033\u6765\u8bf4\u66f4\u81ea\u7136\u7684\u5c3a\u5ea6\u3002<\/span><span style=\"color:#000000\">\u4ece\u800c\u63d0\u9ad8\u8bed\u97f3\u8bc6\u522b\u548c\u8bed\u97f3\u5206\u6790\u7684\u6548\u679c\u3002<\/span><\/p>\n<p style=\"margin-left:0.00pt;text-align:left\"><span style=\"color:#000000\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u6885\u5c14\u5c3a\u5ea6\u7684\u8ba1\u7b97\u516c\u5f0f\u4e3a&#xff1a;<\/span><\/p>\n<p style=\"margin-left:0.00pt;text-align:left\"><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"52\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260924042515-6ab4a62b9804b.png\" width=\"234\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"1287\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260924042515-6ab4a62bad684.png\" width=\"2560\" \/><\/p>\n<p>\u56fe12\u3001\u7b49\u9ad8\u6885\u5c14\u9891\u8c31\u56fe\u548c\u7b49\u9762\u79ef\u6885\u5c14\u9891\u8c31\u56fe<\/p>\n<p style=\"margin-left:0.00pt;text-align:left\"><span style=\"color:#000000\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u4e0a\u56fe\u662f<\/span><span style=\"color:#7030a0\">HZ\u5230Mel\u7684\u6620\u5c04\u5173\u7cfb\u56fe<\/span><span style=\"color:#000000\">&#xff0c;\u53ef\u4ee5\u770b\u5230\u4e8c\u8005\u4e3alog\u5173\u7cfb&#xff0c;\u5728\u9891\u7387\u8f83\u4f4e\u65f6&#xff0c;Mel\u968fHZ\u53d8\u5316\u8f83\u5feb&#xff1b;\u5f53\u9891\u7387\u8f83\u9ad8\u65f6&#xff0c;\u66f2\u7ebf\u659c\u7387\u5c0f&#xff0c;\u53d8\u5316\u7f13\u6162\u3002<\/span><\/p>\n<p style=\"margin-left:0.00pt;text-align:left\"><span style=\"color:#000000\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u6885\u5c14\u6ee4\u6ce2\u5668\u7ec4\u5c31\u662f\u5c06\u7ebf\u6027\u9891\u8c31\u8f6c\u6362\u5230\u6885\u5c14\u5c3a\u5ea6\u7684\u5de5\u5177&#xff0c;\u5982\u4e0a\u53f3\u56fe&#xff0c;\u5206\u4e3a<\/span><span style=\"color:#ff0000\">\u7b49\u9ad8\u6885\u5c14\u9891\u8c31\u56fe&#xff08;\u9002\u7528\u4e8e\u975e\u4eba\u58f0\u9886\u57df&#xff09;<\/span><span style=\"color:#000000\">\u548c<\/span><span style=\"color:#ff0000\">\u7b49\u9762\u79ef\u6885\u5c14\u9891\u8c31\u56fe&#xff08;\u9002\u7528\u4e8e\u4eba\u58f0\u9886\u57df&#xff09;\u3002<\/span><\/p>\n<p style=\"margin-left:0.00pt;text-align:left\"><span style=\"color:#000000\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5c06\u521a\u624d\u5f97\u5230\u9891\u8c31\u901a\u8fc7\u6885\u5c14\u6807\u5ea6\u6ee4\u6ce2\u5668\u7ec4&#xff08;mel-scale filter banks&#xff09;&#xff0c;\u5c31\u53ef\u4ee5\u53d8\u6362\u4e3a\u6885\u5c14\u9891\u8c31\u3002<\/span><\/p>\n<p>#\u8ba1\u7b97\u529f\u7387\u8c31\u56fe<br \/>\nS &#061; abs(spectrogram(y_preemphasized, window, frame_length &#8211; hop_length, n_fft, fs)).^2;<br \/>\n#\u751f\u6210\u6885\u5c14\u6ee4\u6ce2\u5668\u7ec4<br \/>\nmel_filter_bank &#061; melFilterBank(n_mels, n_fft, fs);<br \/>\n#\u5e94\u7528\u6885\u5c14\u6ee4\u6ce2\u5668\u5230\u529f\u7387\u8c31\u56fe<br \/>\nmel_spec &#061; mel_filter_bank * S;<br \/>\n#\u8f6c\u6362\u4e3adB<br \/>\nmel_spec_db &#061; 10 * log10(mel_spec &#043; eps);<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"525\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260924042517-6ab4a62d16f98.png\" width=\"700\" \/><\/p>\n<p>\u56fe13\u3001\u539f\u59cb\u8bed\u97f3\u548c\u8bed\u8c31\u56fe\u5bf9\u5e94\u7684\u6885\u5c14\u9891\u8c31\u56fe<\/p>\n<p style=\"margin-left:0.00pt;text-align:left\"><span style=\"color:#000000\">3\u3001\u6885\u5c14\u5012\u8c31\u7cfb\u6570<\/span><\/p>\n<p style=\"margin-left:0.00pt;text-align:left\"><span style=\"color:#000000\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u6885\u5c14\u5012\u8c31\u7cfb\u6570&#xff08;Mel-scale Frequency Cepstral Coefficients&#xff0c;\u7b80\u79f0MFCC&#xff09;\u662f\u5728Mel\u6807\u5ea6\u9891\u7387\u57df\u63d0\u53d6\u51fa\u6765\u7684\u5012\u8c31\u53c2\u6570\u3002<\/span><\/p>\n<p style=\"margin-left:0.00pt;text-align:left\"><span style=\"color:#000000\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5012\u8c31&#xff08;cepsrum)&#xff1a;<\/span><span style=\"color:#000000\">\u5012\u8c31\u4e00\u8bcd\u662f\u9891\u8c31spectrum\u82f1\u6587\u7684\u524d\u56db\u4e2a\u5355\u8bcd\u5012\u8fc7\u6765\u5199\u800c\u6784\u6210\u7684\u3002\u5c31\u662f\u4e00\u79cd\u4fe1\u53f7\u7684\u5085\u91cc\u53f6\u53d8\u6362\u7ecf\u5bf9\u6570\u8fd0\u7b97\u540e\u518d\u8fdb\u884c\u5085\u91cc\u53f6\u53cd\u53d8\u6362\u5f97\u5230\u7684\u8c31\u3002<\/span><\/p>\n<p style=\"margin-left:0.00pt;text-align:left\"><span style=\"color:#000000\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u8ba1\u7b97\u8fc7\u7a0b&#xff1a;<\/span><\/p>\n<p style=\"margin-left:0.00pt;text-align:left\"><span style=\"color:#000000\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5c06\u539f\u8bed\u97f3\u4fe1\u53f7\u7ecf\u8fc7<\/span><span style=\"color:#ff0000\">\u5085\u91cc\u53f6\u53d8\u6362<\/span><span style=\"color:#000000\">\u5f97\u5230\u9891\u8c31&#xff0c;\u8bed\u97f3\u770b\u4f5c\u662f\u58f0\u6e90\u6fc0\u52b1 e[<\/span><span style=\"color:#000000\">k<\/span><span style=\"color:#000000\">] \u548c\u58f0\u9053\u7cfb\u7edf h[<\/span><span style=\"color:#000000\">k<\/span><span style=\"color:#000000\">] \u7684\u5377\u79ef\u7ed3\u679c<\/span><\/p>\n<p style=\"margin-left:0.00pt;text-align:left\"><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"27\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260924042517-6ab4a62d41907.png\" width=\"144\" \/><\/p>\n<p style=\"margin-left:0.00pt;text-align:left\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u4e24\u8fb9\u53d6\u5bf9\u6570<\/p>\n<p style=\"margin-left:0.00pt;text-align:left\"><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"34\" src=\"2026-09-2450okaverktp.png\" width=\"397\" \/><\/p>\n<p style=\"margin-left:0.00pt;text-align:left\"><span style=\"color:#000000\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u518d\u6c42<\/span><span style=\"color:#ff0000\">\u9006\u5085\u91cc\u53f6\u53d8\u6362<\/span><\/p>\n<p style=\"margin-left:0.00pt;text-align:left\"><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"27\" src=\"2026-09-24exuxdvxc1ce.png\" width=\"142\" \/><\/p>\n<p style=\"margin-left:0.00pt;text-align:left\"><span style=\"color:#000000\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u6b64\u65f6\u7684x[k]\u5b9e\u9645\u4e0a\u5c31\u662f\u5012\u8c31Cepstrum&#xff0c;<\/span><span style=\"color:#ff0000\">h[k] \u662f\u4f4e\u9636\u5012\u8c31\u7cfb\u6570<\/span><span style=\"color:#000000\">&#xff0c;\u4ee3\u8868\u8bed\u97f3\u4fe1\u53f7\u7684\u9891\u8c31\u5305\u7edc\u3002\u5b83\u4e0e\u8bed\u97f3\u4fe1\u53f7\u7684\u58f0\u9053\u7279\u6027&#xff08;\u5982\u5171\u632f\u5cf0\u6216\u58f0\u9053\u7684\u6ee4\u6ce2\u4f5c\u7528&#xff09;\u76f8\u5173\u3002<\/span><span style=\"color:#ff0000\">e[k] \u662f\u9ad8\u9636\u5012\u8c31\u7cfb\u6570<\/span><span style=\"color:#000000\">&#xff0c;\u4ee3\u8868\u8bed\u97f3\u4fe1\u53f7\u7684\u6fc0\u52b1\u6210\u5206\u3002\u5b83\u4e0e\u58f0\u5e26\u632f\u52a8\u6216\u6fc0\u52b1\u4fe1\u53f7\u7279\u6027\u76f8\u5173\u3002\u6700\u540e\u9006\u53d8\u6362\u5f97\u5230\u7684\u5012\u8c31\u56fe&#xff0c;\u6a2a\u5750\u6807\u4e3a\u5012\u9891\u7387&#xff08;\u9891\u7387\u7684\u5012\u6570&#xff0c;\u5355\u4f4d\u662f\u79d2&#xff09;&#xff0c;\u7eb5\u5750\u6807\u662f\u632f\u5e45\u3002<\/span><\/p>\n<p style=\"margin-left:0.00pt;text-align:left\"><span style=\"color:#ff0000\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5bf9\u6885\u5c14\u8c31\u505alog\u5904\u7406\u5e76\u505a<\/span><span style=\"color:#7030a0\">DCT\u79bb\u6563\u4f59\u5f26\u53d8\u6362<\/span><span style=\"color:#ff0000\">&#xff0c;\u4fdd\u7559\u7684\u4f59\u5f26\u7cfb\u6570\u5c31\u662f\u6885\u5c14\u5012\u8c31\u7cfb\u6570<\/span><span style=\"color:#ff0000\">(MFCC)<\/span><\/p>\n<p># \u5bf9\u6570\u5904\u7406<br \/>\nmel_spec_db &#061; 10 * log10(mel_spec &#043; eps);<br \/>\n#  \u8ba1\u7b97\u6885\u5c14\u5012\u8c31\u7cfb\u6570 (MFCC)<br \/>\nnum_mfcc &#061; 13; #  \u901a\u5e38\u53d6\u524d13\u4e2a\u5012\u8c31\u7cfb\u6570<br \/>\nmfcc &#061; dct(mel_spec_db);  #  \u5bf9\u6885\u5c14\u8c31\u8fdb\u884c\u79bb\u6563\u4f59\u5f26\u53d8\u6362(DCT)<br \/>\n#  \u53d6\u524d13\u4e2a\u4f59\u5f26\u7cfb\u6570<br \/>\nmfcc &#061; mfcc(1:num_mfcc, :);<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"750\" src=\"2026-09-24xymixtcwuq4.png\" width=\"1033\" \/><\/p>\n<p>\u56fe14\u3001\u6885\u5c14\u9891\u8c31\u56fe\u53ca\u5176\u5bf9\u5e94\u7684\u6885\u5c14\u5012\u8c31\u7cfb\u6570<\/p>\n<p style=\"margin-left:22.50pt;text-align:left\">\n<p style=\"margin-left:0.00pt;text-align:left\"><span style=\"color:#000000\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u6885\u5c14\u5012\u8c31\u7cfb\u6570\u7684\u4e3b\u8981\u4f5c\u7528\u662f&#xff1a;<\/span><span style=\"color:#ff0000\">\u7279\u5f81\u8868\u793a<\/span><span style=\"color:#000000\">&#xff1a;\u5b83\u4eec\u662f\u97f3\u9891\u4fe1\u53f7\u7684\u7279\u5f81\u8868\u793a&#xff0c;\u53ef\u4ee5\u7528\u4e8e\u540e\u7eed\u7684\u8bed\u97f3\u8bc6\u522b\u3001\u97f3\u9891\u5206\u7c7b\u3001\u60c5\u611f\u5206\u6790\u7b49\u4efb\u52a1\u3002<\/span><span style=\"color:#ff0000\">\u6570\u636e\u538b\u7f29<\/span><span style=\"color:#000000\">&#xff1a;\u901a\u8fc7\u4f7f\u7528\u8f83\u5c11\u7684\u4f4e\u9891\u5012\u8c31\u7cfb\u6570&#xff08;\u901a\u5e38\u53ea\u53d6\u524d12-13\u4e2a\u7cfb\u6570&#xff09;&#xff0c;\u6211\u4eec\u53ef\u4ee5\u6709\u6548\u5730\u8868\u793a\u5927\u90e8\u5206\u97f3\u9891\u4fe1\u606f&#xff0c;\u51cf\u5c11\u6570\u636e\u7684\u7ef4\u5ea6\u3002<\/span><span style=\"color:#ff0000\">\u53bb\u566a\u548c\u589e\u5f3a\u8bc6\u522b\u6027\u80fd<\/span><span style=\"color:#000000\">&#xff1a;\u9ad8\u9891\u7684\u6885\u5c14\u5012\u8c31\u7cfb\u6570\u901a\u5e38\u5305\u542b\u4e86\u566a\u58f0\u6216\u7ec6\u8282&#xff0c;\u901a\u8fc7\u53bb\u9664\u8fd9\u4e9b\u9ad8\u9891\u7cfb\u6570&#xff0c;\u53ef\u4ee5\u5e2e\u52a9\u63d0\u9ad8\u8bc6\u522b\u7cfb\u7edf\u7684\u9c81\u68d2\u6027\u548c\u6027\u80fd\u3002<\/span><\/p>\n<p style=\"margin-left:0.00pt;text-align:left\"><span style=\"color:#000000\">\u4e09\u3001\u5b9e\u9a8c\u7ed3\u679c<\/span><\/p>\n<p style=\"margin-left:0.00pt;text-align:left\"><span style=\"color:#000000\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0python\u5b9e\u73b0\u8bed\u97f3\u7684\u9884\u5904\u7406\u548c\u7279\u5f81\u63d0\u53d6&#xff1a;\u8bed\u8c31\u56fe&#xff0c;\u6885\u5c14\u8bed\u8c31\u56fe&#xff0c;<\/span><span style=\"color:#000000\">MFCC<\/span><span style=\"color:#000000\">&#xff0c;<\/span><span style=\"color:#000000\">MFCC<\/span><span style=\"color:#000000\">\u7279\u5f81\u77e9\u9635<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"400\" src=\"2026-09-24w2bz3kdutez.png\" width=\"1000\" \/><\/p>\n<p>\u56fe15\u3001python\u5f97\u5230\u7684\u8bed\u8c31\u56fe<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"400\" src=\"2026-09-24en3w5dr4shc.png\" width=\"1000\" \/><\/p>\n<p>\u56fe16\u3001python\u5f97\u5230\u7684\u6885\u5c14\u8bed\u8c31\u56fe<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"400\" src=\"2026-09-24ljdjrgugmjz.png\" width=\"1000\" \/><\/p>\n<p>\u56fe17\u3001mfcc<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"225\" src=\"2026-09-245hhfv3qqcml.png\" width=\"386\" \/><\/p>\n<p>\u56fe18\u3001MFCC\u7279\u5f81\u77e9\u9635<\/p>\n<p style=\"margin-left:22.50pt;text-align:left\">\u56db\u3001\u603b\u7ed3<\/p>\n<p style=\"margin-left:0.00pt;text-align:left\"><span style=\"color:#000000\">\u8bed\u97f3\u9884\u5904\u7406\u662f\u4e00\u7cfb\u5217\u64cd\u4f5c&#xff0c;\u7528\u4e8e\u5c06\u539f\u59cb\u8bed\u97f3\u4fe1\u53f7\u8f6c\u5316\u4e3a\u9002\u5408\u540e\u7eed\u5904\u7406\u7684\u7279\u5f81\u5f62\u5f0f\u3002\u8fd9\u4e9b\u64cd\u4f5c\u5e2e\u52a9\u63d0\u5347\u4fe1\u53f7\u8d28\u91cf&#xff0c;\u964d\u4f4e\u566a\u58f0\u5e72\u6270&#xff0c;\u589e\u5f3a\u8bed\u97f3\u4fe1\u53f7\u7684\u663e\u8457\u7279\u5f81&#xff0c;\u4ece\u800c\u63d0\u9ad8\u8bed\u97f3\u5904\u7406\u7cfb\u7edf&#xff08;\u5982\u8bc6\u522b\u6216\u5408\u6210&#xff09;\u7684\u6027\u80fd\u3002<\/span><\/p>\n<p style=\"margin-left:0.00pt;text-align:left\"><span style=\"color:#fb8748\">\u9884\u52a0\u91cd<\/span><span style=\"color:#000000\">&#xff1a;\u8bed\u97f3\u4fe1\u53f7\u4e2d\u9ad8\u9891\u5206\u91cf\u8f83\u5f31&#xff0c;\u4e14\u4f4e\u9891\u5206\u91cf\u53ef\u80fd\u5305\u542b\u66f4\u591a\u73af\u5883\u566a\u58f0\u3002\u901a\u8fc7\u9ad8\u901a\u6ee4\u6ce2\u5668<\/span><span style=\"color:#ff0000\">\u589e\u5f3a\u9ad8\u9891\u5206\u91cf<\/span><span style=\"color:#000000\">&#xff0c;\u5e73\u8861\u9891\u8c31\u5206\u5e03&#xff0c;\u4f7f\u9ad8\u9891\u7279\u5f81\u66f4\u52a0\u7a81\u51fa&#xff0c;\u6709\u5229\u4e8e\u540e\u7eed\u7684\u9891\u57df\u5206\u6790\u3002<\/span><\/p>\n<p style=\"margin-left:0.00pt;text-align:left\"><span style=\"color:#fb8748\">\u5206\u5e27<\/span><span style=\"color:#000000\">&#xff1a;\u8bed\u97f3\u4fe1\u53f7\u662f\u4e00\u79cd\u975e\u5e73\u7a33\u4fe1\u53f7&#xff0c;\u4f46\u5728\u77ed\u65f6\u95f4\u5185\u53ef\u8ba4\u4e3a\u662f\u5e73\u7a33\u7684&#xff08;\u901a\u5e38\u4e3a 20-40ms&#xff09;\u3002\u5c06<\/span><span style=\"color:#ff0000\">\u8fde\u7eed\u8bed\u97f3\u4fe1\u53f7\u5206\u6210\u591a\u4e2a\u77ed\u65f6\u5e27<\/span><span style=\"color:#000000\">&#xff0c;\u4fbf\u4e8e\u540e\u7eed\u5206\u6790\u8bed\u97f3\u4fe1\u53f7\u7684\u77ed\u65f6\u7279\u6027&#xff0c;\u5982\u529f\u7387\u3001\u9891\u8c31\u7b49\u3002<\/span><\/p>\n<p style=\"margin-left:0.00pt;text-align:left\"><span style=\"color:#fb8748\">\u52a0\u7a97<\/span><span style=\"color:#000000\">&#xff1a;\u5206\u5e27\u8fc7\u7a0b\u4e2d&#xff0c;\u4fe1\u53f7\u5728\u8fb9\u754c\u5904\u4f1a\u51fa\u73b0\u9891\u8c31\u6cc4\u6f0f\u73b0\u8c61\u3002\u901a\u8fc7\u52a0\u7a97\u6291\u5236\u8fb9\u754c\u6548\u5e94&#xff0c;\u7a81\u51fa\u5e27\u4e2d\u5fc3\u7684\u91cd\u8981\u6027\u3002<\/span><\/p>\n<p style=\"margin-left:0.00pt;text-align:left\"><span style=\"color:#fb8748\">\u7aef\u70b9\u68c0\u6d4b<\/span><span style=\"color:#000000\">&#xff1a;\u8bed\u97f3\u4fe1\u53f7\u4e2d\u53ef\u80fd\u5305\u542b\u5927\u91cf\u975e\u8bed\u97f3\u6bb5&#xff08;\u5982\u9759\u97f3\u6216\u80cc\u666f\u566a\u58f0&#xff09;&#xff0c;\u8fd9\u4e9b\u90e8\u5206\u5bf9\u5904\u7406\u65e0\u610f\u4e49\u6216\u6709\u5bb3\u3002\u901a\u8fc7\u80fd\u91cf\u3001\u8fc7\u96f6\u7387\u7b49\u7279\u5f81<\/span><span style=\"color:#ff0000\">\u63d0\u53d6\u8bed\u97f3\u7684\u6709\u6548\u90e8\u5206<\/span><span style=\"color:#000000\">&#xff0c;\u53bb\u9664\u975e\u8bed\u97f3\u6bb5&#xff0c;\u63d0\u9ad8\u8ba1\u7b97\u6548\u7387\u3002<\/span><\/p>\n<p style=\"margin-left:0.00pt;text-align:left\"><span style=\"color:#fb8748\">\u8bed\u8c31\u56fe<\/span><span style=\"color:#000000\">&#xff1a;<\/span><span style=\"color:#ff0000\">\u76f4\u63a5\u5206\u6790\u8bed\u97f3\u7684\u9891\u57df\u7279\u6027<\/span><span style=\"color:#000000\">&#xff0c;\u53ef\u4ee5\u6355\u83b7\u5176\u968f\u65f6\u95f4\u53d8\u5316\u7684\u9891\u8c31\u4fe1\u606f\u3002\u5c55\u793a\u8bed\u97f3\u4fe1\u53f7\u5728\u65f6\u95f4\u548c\u9891\u7387\u57df\u7684\u5206\u5e03&#xff0c;\u76f4\u89c2\u5730\u5448\u73b0\u9891\u7387\u7279\u5f81\u3002<\/span><\/p>\n<p style=\"margin-left:0.00pt;text-align:left\"><span style=\"color:#fb8748\">\u6885\u5c14\u8bed\u8c31\u56fe<\/span><span style=\"color:#000000\">&#xff1a;\u4eba\u8033\u5bf9\u4e0d\u540c\u9891\u7387\u7684\u611f\u77e5\u662f\u975e\u7ebf\u6027\u7684&#xff0c;\u9ad8\u9891\u5206\u8fa8\u7387\u8f83\u4f4e&#xff0c;\u4f4e\u9891\u5206\u8fa8\u7387\u8f83\u9ad8\u3002\u5c06<\/span><span style=\"color:#ff0000\">\u9891\u7387\u8f74\u8f6c\u6362\u4e3a Mel \u8f74<\/span><span style=\"color:#000000\">&#xff0c;\u6a21\u62df\u4eba\u8033\u542c\u89c9\u7279\u6027&#xff0c;\u4f7f\u7279\u5f81\u66f4\u7b26\u5408\u611f\u77e5\u89c4\u5f8b\u3002<\/span><\/p>\n<p style=\"margin-left:0.00pt;text-align:left\"><span style=\"color:#fb8748\">\u6885\u5c14\u9891\u7387\u5012\u8c31\u7cfb\u6570<\/span><span style=\"color:#000000\">&#xff1a;\u8bed\u8c31\u56fe\u6216\u6885\u5c14\u8bed\u8c31\u56fe\u4e2d\u7684\u4fe1\u606f\u53ef\u80fd\u5197\u4f59&#xff0c;\u4e0d\u5229\u4e8e\u673a\u5668\u5b66\u4e60\u6a21\u578b\u5904\u7406\u3002\u901a\u8fc7\u79bb\u6563\u4f59\u5f26\u53d8\u6362&#xff08;DCT&#xff09;\u5c06\u6885\u5c14\u8bed\u8c31\u56fe\u538b\u7f29\u4e3a<\/span><span style=\"color:#ff0000\">\u4f4e\u7ef4\u5012\u8c31\u7279\u5f81<\/span><span style=\"color:#000000\">&#xff0c;\u4fdd\u7559\u4e3b\u8981\u4fe1\u606f&#xff0c;\u53bb\u9664\u9ad8\u9891\u53d8\u5316\u3002 <\/span><\/p>\n<p style=\"margin-left:0.00pt;text-align:left\"><span style=\"color:#fb8748\">\u7279\u5f81\u77e9\u9635<\/span><span style=\"color:#000000\">&#xff1a;\u8bed\u97f3\u7279\u5f81\u9700\u4ee5\u77e9\u9635\u5f62\u5f0f\u8f93\u5165\u5230\u540e\u7eed\u6a21\u578b\u4e2d\u3002\u5c06\u4e0d\u540c\u7279\u5f81&#xff08;\u5982\u80fd\u91cf\u3001MFCC \u7b49&#xff09;\u6309\u65f6\u95f4\u5e27\u7ec4\u7ec7\u6210\u4e8c\u7ef4\u77e9\u9635&#xff0c;\u4fbf\u4e8e\u5904\u7406\u3002<\/span><\/p>\n<p style=\"margin-left:0.00pt;text-align:left\">\n<p style=\"margin-left:22.50pt;text-align:left\">\n<p 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