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:
Jun. 30, 2009
Filed:
Mar. 31, 2004
Richard R. Hollowbush, Fleetwood, PA (US);
Kenneth S. Altschuler, Pottstown, PA (US);
David R. Guerrero, Center Valley, PA (US);
Thomas J. Sollenberger, Collegeville, PA (US);
Richard R. Hollowbush, Fleetwood, PA (US);
Kenneth S. Altschuler, Pottstown, PA (US);
David R. Guerrero, Center Valley, PA (US);
Thomas J. Sollenberger, Collegeville, PA (US);
Harris Corporation, Melbourne, FL (US);
Abstract
An audio test device and method provide a visual display of audio parameters for plural audio channels. One audio channel at least temporarily is deemed a reference channel and other channels become relative channel for comparison. Samples from the reference and relative channels produce relative amplitude and relative phase difference values that are plotted on the display. The difference values for pairs of relative channel and reference channel data samples can be plotted as pixels in pie shaped plot segments or other two dimensional plots, one for each relative channel. The relative amplitude and phase differences are presented as positions of pixels along the axes of the plot. This arrangement is particularly useful in showing the current amplitude and phase condition of a multi-channel audio signal. In addition, the amplitude and relative phase data for the channels can be logged over a long time period (a day or more) to show the amplitude and phase conditions as changing over time.