Patent Number: 7,046,795

Title: Method and apparatus for active latency characterization

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.

Inventors: Graumann; David L. (Beaverton, OR), Barnes; Thomas J. (Beaverton, OR), Bielaszewski; John J. (Hillsboro, OR)

Assignee: Intel Corporation

International Classification: H04M 9/08 (20060101)

Expiration Date: 5/16/02018