Electrical audio signal processing systems and devices – Monitoring/measuring of audio devices – Loudspeaker operation
Reexamination Certificate
2005-09-27
2005-09-27
Lee, Ping (Department: 2644)
Electrical audio signal processing systems and devices
Monitoring/measuring of audio devices
Loudspeaker operation
C324S503000, C381S086000
Reexamination Certificate
active
06950525
ABSTRACT:
A time-based audio verification system used to verify the correct installation of an audio system in a vehicle is based on the principle that the distances between a pick-up microphone and each speaker within the vehicle are different. Sound travels at a constant rate, and the wave is measured that provides the time it takes the sound emanating from each speaker to travel to the microphone. Once it is determined where in the wave each speaker is located, the presence of each speaker in the vehicle can be determined. Additionally, the level of each speaker in the curve can be analyzed to determine individual speaker output quality.
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Harrell Michael R.
Thompson Glenn M.
Tompkins John D.
General Motors Corporation
Hargitt Laura C.
Lee Ping
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