Is it audio or video?

来源: 于 2008-03-23 13:26:42 [旧帖] [给我悄悄话] 本文已被阅读：次

For audio, Audacity is a free editor,
http://audacity.sourceforge.net/

I did not use all its functionalities. There might be a filter can help you; or you can slow down the plan.