Automated noise reduction circuit

Abstract

An automated noise reduction circuit is configured to find an audio output with the lowest voltage level associated with undesirable noise. The circuit may include a plurality of audio input ports, ground isolation devices, electronic switches and a microprocessor. The microprocessor may be configured to toggle the ground isolation devices on and off, sample voltage at an output of the ground loop isolation transformers when the ground isolation devices are on and off, and switch the ground isolation devices to a position that produces a lowest voltage output based on a comparison of sampled voltage that is analyzed by a set of algorithms programmed into the microprocessor and that has been sampled from the output of the ground isolation devices for each of the multiple input ports.

Dependencies are inferred from the claim text.