A stereophonic device for headphones to which a monophonic signal or a stereophonic signal is inputted comprises an uncorrelating processing unit for reducing the correlation between two signals obtained by dividing the inputted monophonic signal into two channels or two signals constituting the inputted...http://www.google.de/patents/US7706555?utm_source=gb-gplus-sharePatent US7706555 - Stereophonic device for headphones and audio signal processing program
