An acoustic correction apparatus processes a pair of left and right input signals
to compensate for spatial distortion as a function of frequency when said input
signals are reproduced through loudspeakers in a sound system. The sound-energy
of the left and right input signals is separated and corrected in a first low-frequency
range and a second high-frequency range. The resultant signals are recombined to
create image-corrected audio signals having a desired sound-pressure response when
reproduced by the loudspeakers in the sound system. The desired sound-pressure
response creates an apparent sound image location with respect to a listener. The
image-corrected signals can also be spatially-enhanced to broaden the apparent
sound image and improve the low frequency characteristics of the sound when played
on small loudspeakers.