Patent ID: 7050590
Filing Date: 2006-05-23
Classification: H04S

Abstract:
1. A method of testing an audio program including at least a first audio and a second audio channel, said audio channels having polarity and phase, said method comprising: generating a pseudo audio test signal formed of a first test and a second test channel said test channels defining respective first and second spatial coordinates of an unique asymmetrical image; attaching said pseudo audio test signal to said audio program to form a combined audio program, said combined audio program having a combined first channel including said first audio channel and said first test channel and a combined second channel including said second audio channel and said second test channel; recording said composite audio program on an audio media; reading said composite audio program from said audio media; detecting said pseudo audio test signal from said composite audio program; and displaying a reproduced image corresponding to said unique image, wherein said reproduced image has geometric and spatial characteristics that are indicative of one of said phase and polarity.