{"id":1769,"date":"2022-05-13T12:04:24","date_gmt":"2022-05-13T04:04:24","guid":{"rendered":"https:\/\/ykyi.net\/?p=1769"},"modified":"2022-05-13T12:04:24","modified_gmt":"2022-05-13T04:04:24","slug":"%e8%b0%83%e7%a0%94%e5%8f%b7%e7%a7%b0%e6%9c%80%e5%bf%ab%e7%9a%84%e5%bf%ab%e9%80%9f%e5%82%85%e9%87%8c%e5%8f%b6%e5%8f%98%e6%8d%a2%e5%ba%93fftw","status":"publish","type":"post","link":"https:\/\/ykyi.net\/?p=1769","title":{"rendered":"\u8c03\u7814\u53f7\u79f0\u6700\u5feb\u7684\u5feb\u901f\u5085\u91cc\u53f6\u53d8\u6362\u5e93fftw"},"content":{"rendered":"

\u8c03\u7814\u4e3b\u6d41\u5f00\u6e90fft c\/c++\u5e93\uff0c\u6700\u540e\u9009\u62e9\u4e86\u6700\u4e3a\u77e5\u540d\u7684fftw\u9879\u76ee\u3002 \u8bfb\u5b8c\u4e86\u5b98\u65b9\u6700\u65b0\u7248\u624b\u518c\u7684\u5927\u90e8\u5206\u5185\u5bb9\u3002\u548c\u5f53\u524d\u9879\u76ee\u4f7f\u7528\u7684\u7b80\u5355\u5b9e\u73b0\u505abechmarking\uff0cfftw\u7684\u901f\u5ea6\u5728\u6211\u7684\u6d4b\u8bd5\u73af\u5883\u4e2d\u6bd4\u7b80\u5355\u5b9e\u73b0\u5feb30~40\u500d\u3002 \u6d4b\u8bd5\u73af\u5883: AMD 4G\u4e3b\u9891<\/p>\n\n\n\n\n\n\n\n
<\/th>\n44.1K\u91c7\u683710\u5206\u949f<\/th>\n44.1K\u91c7\u68371\u5206\u949f<\/th>\n44.1K\u91c7\u683710\u79d2<\/th>\n<\/tr>\n<\/thead>\n
\u7b80\u5355\u5b9e\u73b0<\/td>\n2.01017\u79d2<\/td>\n0.203767\u79d2<\/td>\n0.037936\u79d2<\/td>\n<\/tr>\n
fftw<\/td>\n0.047039\u79d2<\/td>\n0.00466\u79d2<\/td>\n0.001126\u79d2<\/td>\n<\/tr>\n
summary<\/td>\n42.3\u500d<\/td>\n43.7\u500d<\/td>\n33.7\u500d<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u5e27\u957f\u90fd\u662f1024, \u5e27\u8df3512\u3002<\/p>\n

\u867d\u7136fftw\u7684\u6027\u80fd\u9886\u5148\u5f97\u975e\u5e38\u5730\u660e\u663e\uff0c\u4f46\u5982\u679c\u6bcf\u4e00\u5206\u949f\u5de6\u53f3\uff0c\u751a\u81f3\u66f4\u77ed\u7684\u65f6\u95f4\u5c31\u8ba1\u7b97\u4e00\u6b21\uff0c\u7b80\u5355fft\u4e5f\u80fd\u5728\u4e00\u79d2\u949f\u5185\u5b8c\u6210\u3002\u770b\u6765fft\u5e76\u975e\u4e3b\u8981\u8017\u65f6\u90e8\u5206\u3002\u8fd9\u6b21\u8c03\u7814fft\u7b97\u6cd5\u66f4\u65b0\u4e86\u6211\u5bf9fft\u7684\u770b\u6cd5\u3002\u6211\u5370\u8c61\u4e2dFFT\u4ec5\u7ba1\u662f\u5feb\u901f\u7b97\u6cd5\uff0c\u4ecd\u7136\u975e\u5e38\u8017\u65f6\uff0c\u6240\u4ee5\u624d\u9700\u8981DSP\u82af\u7247\u3002\u770b\u6765\u73b0\u5728\u7684\u901a\u7528CPU\u4ea6\u80fd\u5e94\u4ed8\u5927\u90e8\u5206\u573a\u666f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u8c03\u7814\u4e3b\u6d41\u5f00\u6e90fft c\/c++\u5e93\uff0c\u6700\u540e\u9009\u62e9\u4e86\u6700\u4e3a\u77e5\u540d\u7684fftw\u9879\u76ee\u3002 \u8bfb\u5b8c\u4e86\u5b98\u65b9\u6700\u65b0\u7248\u624b\u518c\u7684\u5927\u90e8\u5206\u5185\u5bb9\u3002\u548c\u5f53\u524d\u9879\u76ee\u4f7f\u7528\u7684\u7b80\u5355\u5b9e\u73b0\u505abechmarking\uff0cfftw\u7684\u901f\u5ea6\u5728\u6211\u7684\u6d4b\u8bd5\u73af\u5883\u4e2d\u6bd4\u7b80\u5355\u5b9e\u73b0\u5feb30~40\u500d\u3002 \u6d4b\u8bd5\u73af\u5883: AMD 4G\u4e3b\u9891 44.1K\u91c7\u683710\u5206\u949f 44.1K\u91c7\u68371\u5206\u949f 44.1K\u91c7\u683710\u79d2 \u7b80\u5355\u5b9e\u73b0 2.01017\u79d2 0.203767\u79d2 0.037936\u79d2 fftw 0.047039\u79d2 0.00466\u79d2 0.001126\u79d2 summary 42.3\u500d 43.7\u500d 33.7\u500d \u5e27\u957f\u90fd\u662f1024, \u5e27\u8df3512\u3002 \u867d\u7136fftw\u7684\u6027\u80fd\u9886\u5148\u5f97\u975e\u5e38\u5730\u660e\u663e\uff0c\u4f46\u5982\u679c\u6bcf\u4e00\u5206\u949f\u5de6\u53f3\uff0c\u751a\u81f3\u66f4\u77ed\u7684\u65f6\u95f4\u5c31\u8ba1\u7b97\u4e00\u6b21\uff0c\u7b80\u5355fft\u4e5f\u80fd\u5728\u4e00\u79d2\u949f\u5185\u5b8c\u6210\u3002\u770b\u6765fft\u5e76\u975e\u4e3b\u8981\u8017\u65f6\u90e8\u5206\u3002\u8fd9\u6b21\u8c03\u7814fft\u7b97\u6cd5\u66f4\u65b0\u4e86\u6211\u5bf9fft\u7684\u770b\u6cd5\u3002\u6211\u5370\u8c61\u4e2dFFT\u4ec5\u7ba1\u662f\u5feb\u901f\u7b97\u6cd5\uff0c\u4ecd\u7136\u975e\u5e38\u8017\u65f6\uff0c\u6240\u4ee5\u624d\u9700\u8981DSP\u82af\u7247\u3002\u770b\u6765\u73b0\u5728\u7684\u901a\u7528CPU\u4ea6\u80fd\u5e94\u4ed8\u5927\u90e8\u5206\u573a\u666f\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-1769","post","type-post","status-publish","format-standard","hentry","category-tech_articles"],"_links":{"self":[{"href":"https:\/\/ykyi.net\/index.php?rest_route=\/wp\/v2\/posts\/1769","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ykyi.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ykyi.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ykyi.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ykyi.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1769"}],"version-history":[{"count":0,"href":"https:\/\/ykyi.net\/index.php?rest_route=\/wp\/v2\/posts\/1769\/revisions"}],"wp:attachment":[{"href":"https:\/\/ykyi.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1769"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ykyi.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1769"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ykyi.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1769"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}