Thorpe North & Western LLP
Audio distortion correction for a parametric reproduction system
A system and methods for distortion reduction in a non-linear audio system are disclosed. A method includes the operation of defining a non-linear system transfer function which relates a system electronic input signal with a system acoustic output over a range in which the system acoustic output is in a transition between non-saturated and saturated conditions in a medium in which the system acoustic output of the non-linear audio system is broadcast. A preprocessing transfer function is created that is the inverse of the non-linear system transfer function. The preprocessing transfer function is applied to the system electronic input signal to reduce the level of harmonic distortion at the system acoustic output.
Parametric Sound Corporation
H H H H H
H04R H03G H03C H04R H04R
additional inventional inventional additional inventional
James J. Norbert P. Wensen
Croft, III Daberko Liu