The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 07, 2009
Filed:
Apr. 27, 2006
Thomas D. Kite, Beaverton, OR (US);
Thomas D. Kite, Beaverton, OR (US);
Audio Precision, Inc., Beaverton, OR (US);
Abstract
A method and apparatus for measuring channel characteristics of a multi-channel system. In accordance with the method and the apparatus, a first chirp is applied as an input to one channel of a multi-channel system at a first time, and a second chirp is applied as an input to another channel of the multi-channel system at a second time, the second time being separated from the first time by a predetermined first time interval. An output signal is acquired from a selected one of the channels. At least one crosstalk component is separated from non-crosstalk components in the output signal to characterize the selected channel based on non-crosstalk components. Preferably, the chirp is an exponential chirp that enables harmonic distortion components to be distinguished and measured in one channel in the presence of crosstalk from one or more other channels.