A circuit for processing multichannel audio signals, comprises a frequency characteristics correction device and an output device. The frequency characteristics correction device corrects frequency characteristics of an audio signal of a channel including an audio signal component having a predetermined...http://www.google.de/patents/US20090060210?utm_source=gb-gplus-sharePatent US20090060210 - CIRCUIT AND PROGRAM FOR PROCESSING MULTICHANNEL AUDIO SIGNALS AND APPARATUS FOR REPRODUCING SAME
