摘要
针对传统的矩阵环绕声(Matrix Surround)编解码技术存在的不足,提出了新的多通道环绕声编解码方法。在编码端,先将多通道信号转化成前后两对虚拟立体声信号,然后模拟人头微小转动的动态信息,调制前后两对立体声做出相应的变化,左右通道分别相加进行传输,既不影响下混合后普通立体声的收听效果,同时解码端也可以解出动态信息,区分前后立体声,再分配到多通道系统播放,实现良好的环绕声重放。
Considering the disadvantages of conventional matrix surround system, a new method of multi -channel surround sound coding is proposed. In the encoder, multi -channel signals are converted into two pairs of virtual stereo signals, which are modulated to make corresponding changes by simulating dynamic cue of head＇ s slight rotation. And then the left and right channels of the virtual stereos are added respectively into two -channel stereo for transmission. In the decoder, the front and back stereo is separated by extracting the dynamic cue, and then redistributed to multi - channel system. The new method can realize better surround sound reproduction without affecting sound effects of the downmixed stereo.
出处
《电声技术》
2012年第3期39-42,共4页
Audio Engineering
