A parametric loudspeaker system using improved modulators to compensate
for the non-linearity of the parametric process in air when driving the
air at saturation levels and below saturation levels. The parametric
loudspeaker uses a pre-processed single sideband modulator that offers
ideal linearity as characterized by square root pre-processed double
sideband modulators but with a lower carrier frequency and without the
wide bandwidth requirements. By eliminating some or all of the lower
sideband the carrier frequency can be reduced without producing sideband
frequencies in the audible range. Lower operational frequencies result in
greater translation efficiency and greater output capability before
reaching the saturation limit of air. A pre-processor minimizes the
effects of saturation limits for double sideband, truncated double
sideband or single sideband processing to achieve superior output.