Analyse and sound image Iocalization experiment on multi-channel plannar surround sound system

In this paper the method of approximate expansion is used to analyse a Perfect planar surround sound system,resulting in an order of new and upgrade systems.First reproduction signals of the Perfect system and the characteristics of different orders systems are analysed.The independent transmission signals and decoding (reproduction) equation of the systems are given.The compatibility among different orders systems and the problem of simplifying output channals are discussed.The problem of signal picking up,recording,transmitting and the possibility of putting the system into practical use are studied.A sound image localization experiment for the systems is carried out in order to study image localization in relation to the numbers of transmission signals and output channels.The experimental result is consistent with the theoretical result.This work lay down a base for practical use.