提供时域波形显示窗，检验滤波效果。显示叠加前信号波形、滤波前信号波形、滤波后信号波形
-provide time-domain waveform display window, checking the filtering effect. Before the show superimposed signal waveform, before the signal waveform filter, filter signal waveform
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001649s ]
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:0.060105s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001101s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.000901s ]
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SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000832s ]
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SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001804s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 151957 [ RunTime:0.014557s ]
