Patent ID: 7551741

Claim:
A method for a 3D sound generation, comprising: filtering a left input using a first lattice filter; filtering an output of the first lattice filter using a second lattice filter; filtering a right input using a third lattice filter; filtering an output of the third lattice filter using a fourth lattice filter; attenuating the output of the first lattice filter and the output of the third lattice filter; combining the output of the first lattice filter and an output of the second lattice filter; subtracting from the combined output of the first lattice filter and the second lattice filter, a quantity of the attenuated output of the third lattice filter combined with an output of the fourth lattice filter, thereby creating a left processed output; combining the output of the third lattice filter and the output of the fourth lattice filter; subtracting from the combined output of the third lattice filter and the fourth lattice filter, a quantity of the attenuated output of the first lattice filter combined with the output of the second lattice filter, thereby creating a right processed output; and generating the 3D sound using a left speaker for sounding the left processed output and a right speaker for sounding the right processed output.