Electrical audio signal processing systems and devices – Monitoring/measuring of audio devices
Patent
1998-04-23
1999-06-22
Isen, Forester W.
Electrical audio signal processing systems and devices
Monitoring/measuring of audio devices
381 56, 381 98, 379 1, 379 6, H04R 2900
Patent
active
059150297
ABSTRACT:
An apparatus for testing an audio component, such as a compact disc player, automatically runs tests iteratively and suppresses spurious errors generated between test cycles. The player is configured to play a prerecorded test disc encoding a test tone for a certain period of time. The test tone is monitored and changes in frequency or amplitude of the generated signal cause a latch to be set and an interrupt signal to be sent to a controller. The controller increments an error count in response to the interrupt and resets the latch. At the end of the test cycle an end-of-test tone is mixed with the test tone. When the end-of-test tone is detected the latch is disabled for a period of time to prevent signals generated as the player resets to result in spurious errors.
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Redner Lawrence
Russo Paul G.
Yazurlo Donato
Isen Forester W.
Maioli Jay H.
Mei Xu
Sony Corporation
Sony Electronics
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