The 3D recording system is necessary for the real 3D sound post-production, by which the precise position and space of the sound element could be localized and recorded. During recording, the array-installed-microphones are used to record the location of sound source and sound field. In this way, the lively feeling could be restored in the process of post-production. The speaker engineers of SWD Group, to meet the different needs of the clients, can provide live recording by using microphones pointing to different positions and create simulate 3D sound in post-production.