A system and method are described for rendering a left rear surround input
signal at a left rear virtual speaker location and rendering a right rear
surround input signal at a right rear virtual speaker location. The
method includes phase shifting the left rear surround input signal by a
first phase shift. The right rear surround input signal is phase shifted
by a second phase shift. The phase shifted left rear surround input
signal is phase shifted using an HRTF selected to render the left rear
surround input signal at the left rear virtual speaker location. The
phase shifted right rear surround input signal is transformed using an
HRTF selected to render the right rear surround input signal at the right
rear virtual speaker location.