VQR operates analyzing the sound transmitted through a cellular phone or a telephone line. It searches into the reduced frequency band transmitted, for the residual information of the low frequencies eliminated by the telephone transmission. Although the ear does not listen to it, the engineers of Solidyne have found the way to detect this weak residual signal. Also, the high frequency components are found. From these weak information, it is possible to reconstruct at 80% the original sound between 50-12,000 Hertz.
Somehow is a method similar to which is used in Astronomy to know the chemical components of a star, analyzing its light. The VQR is not an audio equalizer, because it is known that it is impossible to improve the telephone sound by means of the equalization.