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欲建立自己“影院”的低收入阶层及大多数农村爱好者,难以承受数千元甚至万元级的“杜比定向逻辑环绕声”式“家庭影院”设备;也有的家庭早期购有录、放象机,18～21英寸彩电,低档CD机和组合音响之类,废弃这些设备而转向投资昂贵器材,经济条件好尚可,经济条件差就不划算。采用日本NEC公司出品的新型四路环绕产专用集成电路μPC1892,就能用较少的费用,组建成效果较好的大众化“家庭影院”。μPC1892集成块能使双声道信号和单声道信号分离出两路主声道信号和一路环绕声道信号及一路中置声道信号。其内部电路是对音源信号频率进行滤波、移相、效果音检波、混合等
To establish their own “theater” low-income class and most rural enthusiasts, it is difficult to withstand thousands of yuan or even million level “Dolby Pro Logic surround sound” type “home theater” equipment; Put the machine, 18 ~ 21 inch color TV, low-end CD player and the combination of audio and the like, to abandon these devices and switch to invest in expensive equipment, good economic conditions are acceptable, poor economic conditions is not cost-effective. The use of the Japanese NEC company produced a new four-way Surrounding Production ASIC μPC1892, will be able to use less cost, formed into a better popular “home theater.” The μPC1892 manifold enables two-channel and one-channel signals to separate two main channel signals, one surround channel signal and one center channel signal. Its internal circuit is the audio signal frequency filtering, phase shift, the effect of sound detection, mixing, etc.