ac3标准文档，杜比数字AC

ac3标准文档，杜比数字AC-3（Dolby Digital AC-3）是杜比公司开发的新一代家庭影院多声道数字音频系统。杜比定向逻辑系统是一个模拟系统。它的四个声道是从编码后的两个声道分解出来的，因此难免有分离度不佳、信噪比不高，对环绕声缺乏立体感，并且环绕声的频带窄等缺点。-ac3 standard documents, Dolby Digital AC-3 (Dolby Digital AC-3) is Dolby has developed a new generation of home theater multi-channel digital audio system. Dolby Pro Logic system is a simulation system. It is from the four-channel encoded by the two-channel decomposition, have poor separation, signal to noise ratio is not high, on three-dimensional sense of a lack of surround sound and surround sound, such as the shortcomings of a narrow band.