Method and apparatus for active latency characterization

Details Method and apparatus for active latency characterization Method and apparatus for active latency characterization

2006-05-16

2006-05-16

Pendleton, Brian T. (Department: 2644)

Telephonic communications

Echo cancellation or suppression

Using digital signal processing

C379S406010, C379S388020, C370S286000

Reexamination Certificate

active

07046795

ABSTRACT:
Briefly, in accordance with one embodiment of the invention, a method for actively characterizing the latency of an audio channel of a computer, such as a personal computer, is provided. At least two signal streams for a waveform are created in the audio channel. The presence of the first signal sample stream for the waveform and the second signal sample stream for the waveform is detected at a point in the audio channel. The time between the detections of the signal sample streams is measured.Briefly, in accordance with another embodiment of the invention, a method of actively characterizing the latency of an audio channel of a computer, such as a personal computer, is provided. At least a first and a second waveform are created in the audio channel. The presence of the first and the second waveform are detected at a point in the audio channel. The time between the detections of the waveforms is measured.

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