用MATLAB实现数字信号处理的程序，包括FIR、IIR设计，以及Z变换、FFT变换-Using MATLAB realize digital signal processing procedures, including FIR, IIR design, as well as the Z transform, FFT transform
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.003117s ]
SELECT `a`.`aid`,`a`.`title`,`a`.`create_time`,`m`.`username` FROM `jrk_downrecords` `a` INNER JOIN `jrk_member` `m` ON `a`.`uid`=`m`.`id` WHERE `a`.`status` = 1 GROUP BY `a`.`aid` ORDER BY `a`.`create_time` DESC LIMIT 10 [ RunTime:0.088775s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.000970s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001155s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.000965s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003205s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000892s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003882s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.016006s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001263s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 3296 [ RunTime:0.020128s ]
