| US 7,602,925 B2 | ||
| Audio feedback processing system | ||
| Richard A. Kreifeldt, Sandy, Utah (US); Curtis R. Reed, Salt Lake City, Utah (US); and Aaron M. Hammond, Eagle Mountain, Utah (US) | ||
| Assigned to Harman International Industries, Incorporated, Northridge, Calif. (US) | ||
| Filed on Oct. 31, 2005, as Appl. No. 11/264,628. | ||
| Application 11/264628 is a continuation of application No. 10/387915, filed on Mar. 13, 2003, granted, now 7,203,324. | ||
| Claims priority of provisional application 60/363994, filed on Mar. 13, 2002. | ||
| Prior Publication US 2006/0056644 A1, Mar. 16, 2006 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. H04B 15/00 (2006.01); H04R 27/00 (2006.01) | ||
| U.S. Cl. 381—93 [381/83; 381/96] | 35 Claims |
| 1. A method for identifying feedback in an input signal, comprising executing instructions stored on a computer readable medium
that cause a processor in a signal processing system to:
obtain frequency sample points of a feedback signal in an input signal;
perform an interpolation between the frequency sample points; and
identify, between the frequency sample points, a frequency estimate of the feedback signal based on the interpolation.
|