Method and apparatus for checking audio signals
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United States of America Patent
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May 23, 2006
Grant Date -
Aug 29, 2002
app pub date -
Dec 18, 2001
filing date -
Dec 18, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
A test signal generator adapted to generate a test signal for an audio program having at least a left and right program track, the test signal generator including a memory means holding digital data descriptive of a unique image; and converter adapted to convert the digital data into a pseudo audio test signal having a left test track and right test track. The pseudo audio test signal is attached or mixed with the respective audio program and the resulting composite signal is recorded on a respective media and/or transmitted by other means to a remote location. At the remote location, the test signal is separated and displayed using the left track and right tracks as two orthogonal components to generate a reproduction of the image. The relative orientation, spatial and geometric characteristics of the reproduced image is indicative of various parameters of the received audio program.
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