Data processing: generic control systems or specific application – Specific application – apparatus or process – Digital audio data processing system
Patent
1997-01-22
2000-10-24
Chang, Vivian
Data processing: generic control systems or specific application
Specific application, apparatus or process
Digital audio data processing system
381 58, G06F 1700
Patent
active
061380512
ABSTRACT:
A method and apparatus for creating a plurality of encoded bitstreams that represent selected waveforms in different ways such that when an audio decoder decodes the bitstream, an audible tone or lack thereof, will signify the failure of the audio decoder. The method employs a waveform having a set of baseline parameters but encodes the waveform in different ways by varying the parameter under test. The method monitors the audio decoder's ability to properly decode these alternating waveforms, by listening for an audible tone change or lack thereof. Since the behavior of the selected waveform is predictable, the method provides a set of simple and effective tests for evaluating black box audio decoders which may have no accessible internal nodes.
REFERENCES:
patent: 4016360 (1977-04-01), Cane
patent: 4110571 (1978-08-01), Hills
patent: 4700362 (1987-10-01), Todd et al.
patent: 5155743 (1992-10-01), Jacobs
patent: 5285498 (1994-02-01), Johnston
patent: 5644505 (1997-07-01), Soutar et al.
Copy of International Search Report dated Feb. 19, 1997, from corresponding international application PCT/US97/01573.
Burke William J.
Chang Vivian
Sarnoff Corporation
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