Virtual surround effect

This is a solution enabling 5.1ch multi-channel sound to be appreciated like surround sound even though reproduced with common earphones or stereo speakers.
Even when the original sound source is 5.1ch like movie sound, we are generally restricted to enjoy the down-mixed sound with stereo if reproduction environment is stereo.
eVS provides the sound effect as if virtual 5ch speakers are placed around your head when using 2ch stereo speaker or earphone so as to reproduce effects as if 5.1ch sound is appreciated.