{"id":17864,"date":"2026-06-10T08:55:09","date_gmt":"2026-06-10T00:55:09","guid":{"rendered":"https:\/\/ab123.xyz\/?p=17864"},"modified":"2026-06-10T08:55:09","modified_gmt":"2026-06-10T00:55:09","slug":"%e5%9f%ba%e4%ba%8erisc-v%e7%9a%84fft%e7%ae%97%e6%b3%95%e5%ba%93%e6%80%a7%e8%83%bd%e5%af%b9%e6%af%94%ef%bc%9a%e4%bc%98%e5%8c%96%e5%90%8e%e6%8f%90%e5%8d%875%e5%80%8d","status":"publish","type":"post","link":"https:\/\/ab123.xyz\/?p=17864","title":{"rendered":"\u57fa\u4e8eRISC-V\u7684FFT\u7b97\u6cd5\u5e93\u6027\u80fd\u5bf9\u6bd4\uff1a\u4f18\u5316\u540e\u63d0\u53475\u500d"},"content":{"rendered":"<p>\u5728\u5d4c\u5165\u5f0f\u4e0e\u8fb9\u7f18\u8ba1\u7b97\u9886\u57df\uff0c<strong>\u57fa\u4e8eRISC-V\u7684FFT\u7b97\u6cd5\u5e93<\/strong>\u6b63\u6210\u4e3a\u4fe1\u53f7\u5904\u7406\u6027\u80fd\u7a81\u7834\u7684\u5173\u952e\u3002\u6700\u65b0\u53d1\u5e03\u7684 <a href=\"https:\/\/fft-optimizer.riscv.org\" target=\"_blank\">\u5b98\u65b9\u7f51\u7ad9<\/a> \u5c55\u793a\u4e86\u7ecf\u8fc7\u6df1\u5ea6\u4f18\u5316\u540e\u7684FFT\u5e93\uff0c\u5728\u76f8\u540c\u786c\u4ef6\u6761\u4ef6\u4e0b\u8ba1\u7b97\u901f\u5ea6\u63d0\u5347\u6700\u9ad8\u8fbe5\u500d\uff0c\u4e3a\u7269\u8054\u7f51\u3001\u96f7\u8fbe\u3001\u97f3\u9891\u5904\u7406\u7b49\u573a\u666f\u5e26\u6765\u9769\u547d\u6027\u6539\u53d8\u3002<\/p>\n<h2>\u6838\u5fc3\u529f\u80fd\u4e0e\u4f18\u52bf<\/h2>\n<p>\u8be5\u5de5\u5177\u5e93\u9488\u5bf9RISC-V\u6307\u4ee4\u96c6\u67b6\u6784\u8fdb\u884c\u4e86\u624b\u5de5\u6c47\u7f16\u7ea7\u8c03\u4f18\uff0c\u5145\u5206\u5229\u7528\u4e86\u5411\u91cf\u6269\u5c55\uff08V\u6269\u5c55\uff09\u548c\u4f4d\u64cd\u4f5c\u6307\u4ee4\u3002\u5176\u6838\u5fc3\u4f18\u52bf\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u652f\u6301\u591a\u79cdFFT\u70b9\u6570\uff0816\u81f316384\u70b9\uff09\uff0c\u8986\u76d6\u5927\u90e8\u5206\u5de5\u4e1a\u5e94\u7528<\/li>\n<li>\u5185\u5b58\u8bbf\u95ee\u6a21\u5f0f\u7ecf\u8fc7\u7f13\u5b58\u884c\u5bf9\u9f50\u4f18\u5316\uff0c\u51cf\u5c11\u672a\u547d\u4e2d\u7387<\/li>\n<li>\u63d0\u4f9b\u5355\u7cbe\u5ea6\u6d6e\u70b9\u4e0e\u5b9a\u70b9\u4e24\u79cd\u5b9e\u73b0\uff0c\u9002\u5e94\u4e0d\u540c\u529f\u8017\u7ea6\u675f<\/li>\n<\/ul>\n<h3>\u6027\u80fd\u5bf9\u6bd4\u7ed3\u679c<\/h3>\n<p>\u5728SiFive U74\u548cT-Head C908\u5f00\u53d1\u677f\u4e0a\uff0c\u4f18\u5316\u540e\u7684\u5e93\u6bd4\u57fa\u7840\u7248\u672c\uff08\u6807\u51c6C\u5b9e\u73b0\uff09\u5728256\u70b9FFT\u4e2d\u5feb5.2\u500d\uff0c\u57281024\u70b9FFT\u4e2d\u5feb4.8\u500d\u3002\u66f4\u91cd\u8981\u7684\u662f\uff0c\u4f4d\u7cbe\u786e\u5ea6\u8bef\u5dee\u63a7\u5236\u57280.1%\u4ee5\u5185\uff0c\u6ee1\u8db3\u5b9e\u65f6\u901a\u4fe1\u8981\u6c42\u3002<\/p>\n<h2>\u5e94\u7528\u573a\u666f<\/h2>\n<p>\u8be5\u5e93\u5df2\u6210\u529f\u90e8\u7f72\u4e8e\u4ee5\u4e0b\u9886\u57df\uff1a<\/p>\n<ul>\n<li>\u667a\u80fd\u7535\u7f51\u8c10\u6ce2\u68c0\u6d4b\uff1a\u5b9e\u65f6\u5206\u679050\/60Hz\u6ce2\u5f62\u8d28\u91cf<\/li>\n<li>\u65e0\u4eba\u673a\u907f\u969c\u96f7\u8fbe\uff1a\u5728\u4f4e\u529f\u8017MCU\u4e0a\u5b9e\u73b0&lt;10ms\u7684FFT\u8ba1\u7b97<\/li>\n<li>\u4fbf\u643a\u5f0f\u533b\u7597\u8bbe\u5907\uff1a\u5fc3\u7535\u4fe1\u53f7\uff08ECG\uff09\u9891\u8c31\u5206\u6790<\/li>\n<\/ul>\n<h3>\u8f6f\u4ef6\u751f\u6001\u517c\u5bb9\u6027<\/h3>\n<p>\u5de5\u5177\u5e93\u5b8c\u5168\u517c\u5bb9RISC-V GNU\u5de5\u5177\u94fe\uff0c\u5e76\u63d0\u4f9bCMake\u96c6\u6210\u811a\u672c\u3002\u5f00\u53d1\u8005\u53ea\u9700\u5728\u9879\u76ee\u4e2d\u6dfb\u52a0\u4ee5\u4e0b\u914d\u7f6e\u5373\u53ef\u542f\u7528\u4f18\u5316\uff1a<code>find_package(FFTOptimizer) target_link_libraries(... ffoptimizer)<\/code><\/p>\n<h2>\u5982\u4f55\u4f7f\u7528\u4e0e\u5feb\u901f\u5165\u95e8<\/h2>\n<p>\u8bbf\u95ee\u5b98\u65b9\u7f51\u7ad9\u5373\u53ef\u4e0b\u8f7d\u9884\u7f16\u8bd1\u9759\u6001\u5e93\u548c\u5934\u6587\u4ef6\u3002\u63a8\u8350\u6d41\u7a0b\uff1a<\/p>\n<ol>\n<li>\u9009\u62e9\u76ee\u6807RISC-V\u6838\u5fc3\uff0832\u4f4d\u621664\u4f4d\uff09<\/li>\n<li>\u8c03\u7528<code>fft_init()<\/code>\u5b8c\u6210\u7cfb\u6570\u9884\u8ba1\u7b97<\/li>\n<li>\u4f7f\u7528<code>fft_execute()<\/code>\u8fdb\u884c\u6b63\u5411\/\u9006\u53d8\u6362<\/li>\n<\/ol>\n<p>\u5b98\u65b9\u8fd8\u63d0\u4f9b\u4e86\u8be6\u7ec6\u7684\u57fa\u51c6\u6d4b\u8bd5\u811a\u672c\uff0c\u652f\u6301\u4e00\u952e\u751f\u6210\u6027\u80fd\u62a5\u544a\u3002\u65e0\u8bba\u60a8\u662fFPGA\u539f\u578b\u9a8c\u8bc1\u8fd8\u662f\u91cf\u4ea7\u82af\u7247\u5f00\u53d1\uff0c\u8be5\u5e93\u90fd\u80fd\u663e\u8457\u7f29\u77ed\u4ea7\u54c1\u4e0a\u5e02\u65f6\u95f4\u3002<\/p>\n<p>\u7acb\u5373\u8bbf\u95ee <a href=\"https:\/\/fft-optimizer.riscv.org\" target=\"_blank\">\u5b98\u65b9\u7f51\u7ad9<\/a> \u83b7\u53d6\u5b8c\u6574\u6280\u672f\u767d\u76ae\u4e66\u4e0e\u793a\u4f8b\u4ee3\u7801\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u5d4c\u5165\u5f0f\u4e0e\u8fb9\u7f18\u8ba1\u7b97\u9886\u57df\uff0c\u57fa\u4e8eRISC-V\u7684FFT\u7b97\u6cd5\u5e93\u6b63\u6210\u4e3a\u4fe1\u53f7\u5904\u7406\u6027\u80fd\u7a81\u7834\u7684\u5173\u952e\u3002\u6700\u65b0\u53d1\u5e03\u7684 \u5b98\u65b9\u7f51\u7ad9 \u5c55\u793a [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[21220,20932,20953,242,21231],"class_list":["post-17864","post","type-post","status-publish","format-standard","hentry","category-4","tag-fft","tag-risc-v","tag-20953","tag-242","tag-21231"],"_links":{"self":[{"href":"https:\/\/ab123.xyz\/index.php?rest_route=\/wp\/v2\/posts\/17864","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ab123.xyz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ab123.xyz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ab123.xyz\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ab123.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=17864"}],"version-history":[{"count":1,"href":"https:\/\/ab123.xyz\/index.php?rest_route=\/wp\/v2\/posts\/17864\/revisions"}],"predecessor-version":[{"id":17865,"href":"https:\/\/ab123.xyz\/index.php?rest_route=\/wp\/v2\/posts\/17864\/revisions\/17865"}],"wp:attachment":[{"href":"https:\/\/ab123.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=17864"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ab123.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=17864"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ab123.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=17864"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}