In this paper, turnable sound absorption structure is used to makethe reverberation time modulatable so as to meet the requirements of broadcasting.

• 在黑龙江省财政专科学校“电教中心”的改建工程中，我们采用了墙面可翻转吸声结构，从而使房间混响时间可调，能满足多方面演播需要。