{"id":44175,"date":"2023-10-04T00:55:03","date_gmt":"2023-10-03T16:55:03","guid":{"rendered":"https:\/\/www.techphant.cn\/?p=44175"},"modified":"2023-10-04T00:56:36","modified_gmt":"2023-10-03T16:56:36","slug":"ffzhyxz","status":"publish","type":"post","link":"https:\/\/www.techphant.cn\/blog\/44175.html","title":{"rendered":"FFT\u5e45\u503c\u548c\u6709\u6548\u503c"},"content":{"rendered":"

  Fast Fourier Transform (FFT)\u662f\u4e00\u79cd\u6570\u5b57\u4fe1\u53f7\u5904\u7406\u6280\u672f\uff0c\u5b83\u53ef\u4ee5\u5c06\u4fe1\u53f7\u4ece\u65f6\u57df\u8f6c\u6362\u5230\u9891\u57df\uff0c\u4ece\u800c\u66f4\u5bb9\u6613\u68c0\u6d4b\u51fa\u4fe1\u53f7\u4e2d\u7684\u7279\u5f81\u3002FFT\u53ef\u4ee5\u5c06\u4fe1\u53f7\u7684\u9891\u57df\u7279\u5f81\u8868\u793a\u4e3a\u5e45\u503c\u548c\u6709\u6548\u503c\uff0c\u4ece\u800c\u66f4\u5bb9\u6613\u68c0\u6d4b\u51fa\u4fe1\u53f7\u4e2d\u7684\u7279\u5f81\u3002\u672c\u6587\u5c06\u4ecb\u7ecdFFT\u5e45\u503c\u548c\u6709\u6548\u503c\u7684\u57fa\u672c\u6982\u5ff5\uff0c\u4ee5\u53ca\u5b83\u4eec\u5728\u6570\u5b57\u4fe1\u53f7\u5904\u7406\u4e2d\u7684\u5e94\u7528\u3002<\/p>\n

\u4ec0\u4e48\u662fFFT\u5e45\u503c\uff1f<\/h2>\n

  FFT\u5e45\u503c\u662f\u6307FFT\u53d8\u6362\u540e\u4fe1\u53f7\u7684\u5e45\u5ea6\uff0c\u5b83\u662f\u4e00\u4e2a\u8868\u793a\u4fe1\u53f7\u7684\u9891\u7387\u6210\u5206\u5f3a\u5ea6\u7684\u4e00\u4e2a\u6570\u503c\u3002FFT\u5e45\u503c\u53ef\u4ee5\u7528\u6765\u8868\u793a\u4fe1\u53f7\u7684\u80fd\u91cf\u5206\u5e03\uff0c\u5b83\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u66f4\u597d\u5730\u7406\u89e3\u4fe1\u53f7\u7684\u7279\u5f81\u3002<\/p>\n

  FFT\u5e45\u503c\u53ef\u4ee5\u901a\u8fc7\u4e24\u79cd\u65b9\u5f0f\u8ba1\u7b97\uff1a\u7edd\u5bf9\u5e45\u503c\u548c\u76f8\u5bf9\u5e45\u503c\u3002\u7edd\u5bf9\u5e45\u503c\u662f\u6307FFT\u53d8\u6362\u540e\u4fe1\u53f7\u7684\u5e45\u5ea6\uff0c\u5b83\u662f\u4e00\u4e2a\u8868\u793a\u4fe1\u53f7\u7684\u9891\u7387\u6210\u5206\u5f3a\u5ea6\u7684\u4e00\u4e2a\u6570\u503c\uff1b\u800c\u76f8\u5bf9\u5e45\u503c\u5219\u662f\u6307FFT\u53d8\u6362\u540e\u4fe1\u53f7\u7684\u5e45\u5ea6\u4e0e\u4fe1\u53f7\u7684\u603b\u80fd\u91cf\u4e4b\u6bd4\uff0c\u5b83\u53ef\u4ee5\u7528\u6765\u8868\u793a\u67d0\u4e2a\u9891\u7387\u6210\u5206\u5728\u4fe1\u53f7\u4e2d\u6240\u5360\u7684\u6bd4\u4f8b\u3002<\/p>\n

\u4ec0\u4e48\u662f\u6709\u6548\u503c\uff1f<\/h2>\n

  \u6709\u6548\u503c\u662f\u6307\u4fe1\u53f7\u7684\u6709\u6548\u80fd\u91cf\uff0c\u5b83\u662f\u6307\u4fe1\u53f7\u4e2d\u7684\u80fd\u91cf\u5206\u5e03\u60c5\u51b5\u3002\u6709\u6548\u503c\u53ef\u4ee5\u901a\u8fc7FFT\u53d8\u6362\u8ba1\u7b97\u51fa\u6765\uff0c\u5b83\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u66f4\u597d\u5730\u7406\u89e3\u4fe1\u53f7\u7684\u7279\u5f81\u3002<\/p>\n

  \u6709\u6548\u503c\u662f\u6307\u4fe1\u53f7\u7684\u6709\u6548\u80fd\u91cf\uff0c\u5b83\u662f\u6307\u4fe1\u53f7\u4e2d\u7684\u80fd\u91cf\u5206\u5e03\u60c5\u51b5\u3002\u6709\u6548\u503c\u53ef\u4ee5\u901a\u8fc7FFT\u53d8\u6362\u8ba1\u7b97\u51fa\u6765\uff0c\u5b83\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u66f4\u597d\u5730\u7406\u89e3\u4fe1\u53f7\u7684\u7279\u5f81\u3002\u6709\u6548\u503c\u53ef\u4ee5\u7528\u6765\u8861\u91cf\u4fe1\u53f7\u7684\u80fd\u91cf\u5206\u5e03\uff0c\u4ece\u800c\u66f4\u597d\u5730\u5206\u6790\u4fe1\u53f7\u7279\u5f81\u3002<\/p>\n

FFT\u5e45\u503c\u548c\u6709\u6548\u503c\u7684\u5e94\u7528<\/h2>\n

  FFT\u5e45\u503c\u548c\u6709\u6548\u503c\u5728\u6570\u5b57\u4fe1\u53f7\u5904\u7406\u4e2d\u6709\u7740\u5e7f\u6cdb\u7684\u5e94\u7528\uff0c\u5b83\u4eec\u53ef\u4ee5\u7528\u6765\u8861\u91cf\u4fe1\u53f7\u7684\u80fd\u91cf\u5206\u5e03\uff0c\u4ece\u800c\u66f4\u597d\u5730\u5206\u6790\u4fe1\u53f7\u7279\u5f81\u3002\u6b64\u5916\uff0cFFT\u5e45\u503c\u548c\u6709\u6548\u503c\u8fd8\u53ef\u4ee5\u7528\u6765\u5206\u6790\u4fe1\u53f7\u7684\u9891\u7387\u6210\u5206\uff0c\u4ece\u800c\u66f4\u597d\u5730\u63d0\u53d6\u4fe1\u53f7\u7684\u7279\u5f81\u3002<\/p>\n

  FFT\u5e45\u503c\u548c\u6709\u6548\u503c\u5728\u4fe1\u53f7\u5904\u7406\u4e2d\u7684\u5e94\u7528\u975e\u5e38\u5e7f\u6cdb\uff0c\u5b83\u4eec\u53ef\u4ee5\u7528\u6765\u8861\u91cf\u4fe1\u53f7\u7684\u80fd\u91cf\u5206\u5e03\uff0c\u4ece\u800c\u66f4\u597d\u5730\u5206\u6790\u4fe1\u53f7\u7279\u5f81\u3002\u6b64\u5916\uff0cFFT\u5e45\u503c\u548c\u6709\u6548\u503c\u8fd8\u53ef\u4ee5\u7528\u6765\u5206\u6790\u4fe1\u53f7\u7684\u9891\u7387\u6210\u5206\uff0c\u4ece\u800c\u66f4\u597d\u5730\u63d0\u53d6\u4fe1\u53f7\u7684\u7279\u5f81\u3002\u5728\u4fe1\u53f7\u5904\u7406\u9886\u57df\uff0cFFT\u5e45\u503c\u548c\u6709\u6548\u503c\u662f\u4e00\u79cd\u91cd\u8981\u7684\u5de5\u5177\uff0c\u5b83\u4eec\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u66f4\u597d\u5730\u7406\u89e3\u4fe1\u53f7\u7684\u7279\u5f81\uff0c\u4ece\u800c\u66f4\u597d\u5730\u5904\u7406\u4fe1\u53f7\u3002<\/p>\n

\u603b\u7ed3<\/h2>\n

  \u672c\u6587\u4ecb\u7ecd\u4e86FFT\u5e45\u503c\u548c\u6709\u6548\u503c\u7684\u57fa\u672c\u6982\u5ff5\uff0c\u4ee5\u53ca\u5b83\u4eec\u5728\u6570\u5b57\u4fe1\u53f7\u5904\u7406\u4e2d\u7684\u5e94\u7528\u3002<\/strong>FFT\u5e45\u503c\u662f\u6307FFT\u53d8\u6362\u540e\u4fe1\u53f7\u7684\u5e45\u5ea6\uff0c\u5b83\u53ef\u4ee5\u7528\u6765\u8868\u793a\u4fe1\u53f7\u7684\u80fd\u91cf\u5206\u5e03\uff1b\u800c\u6709\u6548\u503c\u5219\u662f\u6307\u4fe1\u53f7\u7684\u6709\u6548\u80fd\u91cf\uff0c\u5b83\u53ef\u4ee5\u7528\u6765\u8861\u91cf\u4fe1\u53f7\u7684\u80fd\u91cf\u5206\u5e03\u3002FFT\u5e45\u503c\u548c\u6709\u6548\u503c\u5728\u6570\u5b57\u4fe1\u53f7\u5904\u7406\u4e2d\u6709\u7740\u5e7f\u6cdb\u7684\u5e94\u7528\uff0c\u5b83\u4eec\u53ef\u4ee5\u7528\u6765\u8861\u91cf\u4fe1\u53f7\u7684\u80fd\u91cf\u5206\u5e03\uff0c\u4ece\u800c\u66f4\u597d\u5730\u5206\u6790\u4fe1\u53f7\u7279\u5f81\uff0c\u4ece\u800c\u66f4\u597d\u5730\u5904\u7406\u4fe1\u53f7\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

FastFourierTransform(FFT)\u662f\u4e00\u79cd\u6570\u5b57\u4fe1\u53f7\u5904\u7406\u6280\u672f\uff0c\u5b83\u53ef\u4ee5\u5c06\u4fe1\u53f7\u4ece\u65f6\u57df\u8f6c\u6362\u5230\u9891\u57df\uff0c\u4ece\u800c\u66f4\u5bb9\u6613\u68c0\u6d4b\u51fa\u4fe1\u53f7\u4e2d\u7684\u7279\u5f81\u3002FFT\u53ef\u4ee5\u5c06\u4fe1\u53f7\u7684\u9891\u57df\u7279\u5f81\u8868\u793a<\/p>\n","protected":false},"author":1,"featured_media":4132,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-global-header-display":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","footnotes":""},"categories":[36],"tags":[305],"class_list":["post-44175","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-dzjs"],"_links":{"self":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/posts\/44175","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/comments?post=44175"}],"version-history":[{"count":0,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/posts\/44175\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/media\/4132"}],"wp:attachment":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/media?parent=44175"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/categories?post=44175"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/tags?post=44175"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}