对大多数人而言,音响系统升级最为困难,几乎束手无策的,要数房间的声学改造了。即使是专业电影院,声频频响也还不可能完全达到要求的平坦程度。所以,电影院还音系统中,采用一种叫房间均衡器的设备,把听众席上的频率响应补偿平直。这种设备因为分段要求细,电路多,而且复杂,故价格昂贵。调试时,还必须有一批专业设备。作为民用音响的用户是无法利用房间均衡器这种设备的。如 For most people, the sound system is the most difficult to upgrade, almost acrimonious, to the number of rooms acoustically modified. Even professional cinema, the audio frequency response is not fully meet the required level of flatness. Therefore, the cinema sound system, using a device called room equalizer, the audience’s frequency response compensation flat. This equipment because of the thin segment requirements, more circuits, and complex, it is expensive. Debugging, you must also have a number of professional equipment. As a civilian audio users are unable to use the room equalizer this device. Such as