PCM的A律U律实现代码：16位线性量化的数据转换成8位非线性的PCM数据（13折线法）-U of A law PCM realize Legal Code: 16-bit linear quantization of the data into eight non-linear PCM data (13 line method)
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002661s ]
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:0.142173s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002856s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002551s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002584s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.005709s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.005479s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003496s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015036s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002609s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 198453 [ RunTime:0.001238s ]
