目前以“杜比定向逻辑”为核心的家庭影院有4个声道,可是为了使效果更强烈,有的系统在4个声道中利用分频技术,分出了一个超低音声道。从技术上讲这不能算一个声道。有人把其称之为4.1声道。另外,为了家庭环境好摆放和照顾到更大的区域,环绕声道会并接成两个音箱。所以也有5声道之称,但这是不严谨的,十分勉强,从技术的角度来说,仍然只能叫4声道。那么市面上还有叫5.1声道、7.1声道或更多声道的,又是怎么回事呢?就目前 At present, home theater with “Dolby Pro Logic” as its core has 4 channels, but in order to make the effect more intense, some systems use crossover technology in 4 channels to separate a subwoofer channel. Technically this can not be counted as one channel. Some people call it 4.1 channel. In addition, for good home environment and take care of a larger area, the surround channel will be combined into two speakers. So there are also 5-channel, but it is not rigorous, very reluctantly, from a technical point of view, still can only be called 4-channel. Then there are still on the market called 5.1-channel, 7.1-channel or more channel, what is going on? At present