Patent Document ID: 5438625
Application ID: 07867314
Patent Flag: 1

Claim One:
1. A network for the correction of linear and nonlinear transfer characteristics of electro-acoustic transducers over the complete dynamic range of small and large input signal amplitudes comprising: an electro-acoustic transducer having an input; a distortion reduction system with nonlinear transfer characteristics that are inverse to the same nonlinear transfer characteristics of the transducer and being connected to the input of said transducer; said distortion reduction system consisting of at least two two-port distortion reduction circuits connected in series with each other containing predetermined elements to correct predetermined types of distortion, said system having an input for receiving said input signal amplitudes and generating an output to the input of said transducer; each of said two-port distortion reduction circuits containing at least one three-port circuit as said predetermined elements, each of said three-port circuits having first and second inputs and an output; said distortion reduction system containing adjustable control elements coupled to each of said two-port distortion reduction circuits to correct distortion using said nonlinear transfer characteristics that are inverse to those same characteristics of the transducer; and wherein the transfer characteristics of each of said two-port distortion reduction circuits adjusts said input signals such that the output of said distortion reduction system provides an input to the transducer to compensate for the nonlinear behavior of the electro-acoustic transducer.