现在行业市场上音频部分玩法蛮多，7.1以后就不知道该怎么叫了，各类影院噱头也蛮足，看看DCI规范中怎样定义的。从DCI规范中看，定义了7.1和5.1通道，贴出来供大家参考。

节选自（DCI规范V1.2)

3.3.3   Channel Mapping

          Channel mapping defines where the individual audio channels are assigned and the labeling of channels in a Digital Cinema audio system. This is done to aid in the identification and the location of channels, thus, enabling uniform expression and communication of source audio channels to Digital Cinema playback loudspeakers. The general parameters for 8 and 6 channel mapping are given in Table 5 and Table 6 for reference. Suggested speaker placement for a Digital Cinema auditorium is shown in Figure 4.