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请教TI工程师:OMAP-L138的Codec引起声音数据变化



请教各位:

我使用DVSDK里的codec-engine_2_26_02_11目录下的all.x674 codec(内存分配做了改动,其它没动)后,在只执行Engine_open函数后,声音采集的数据波形就发生了变化,出现了脏数据,在重启后,不执行Engine_open函数的情况下,声音采集的数据波形就不会出现脏数据,请问下,大概是什么原因引起这种情况?谢谢