Patent ID: 7564982

Claim:
A surround sound circuit comprising: only a first non-integrating amplifier and a second non-integrating amplifier and no additional amplifiers; a first pull-up divider being connected to said positive terminal of said first amplifier, a second pull-up divider being connected to said positive terminal of said second amplifier; a first polarized input capacitor and a second polarized input capacitor; a first input line being coupled to a negative terminal of said first amplifier through said first polarized input capacitor and a second input line being connected to a positive terminal of said first amplifier through said second polarized input capacitor; said second input line being coupled to a negative terminal of said second amplifier through said second polarized input capacitor and said first input line being connected to a positive terminal of said second amplifier through said first polarized input capacitor; and a first polarized output capacitor being connected to an output of said first amplifier and a second polarized output capacitor being connected to an output of said second amplifier; in which the positive terminals of the first and second non-integrating amplifiers are not connected commonly together, nor are the negative terminals of the first and second non-integrating amplifiers connected commonly together.