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:
Jan. 27, 2015
Filed:
Apr. 12, 2011
Arthur Salvetti, Colorado Springs, CO (US);
Harikrishna P. Natarajan, Shakopee, MN (US);
Arthur Salvetti, Colorado Springs, CO (US);
Harikrishna P. Natarajan, Shakopee, MN (US);
Starkey Laboratories, Inc., Eden Prairie, MN (US);
Abstract
Disclosed herein, among other things, are methods and apparatus for improved feedback cancellation for hearing assistance devices. In various embodiments the present acoustic feedback cancellation system is configured to identify the onset of acoustic feedback. This early detection is accomplished in a variety of ways, including detection of an exponential rise in a periodic signal which is associated with early acoustic feedback. The present system is very rapid and so it can operate when the conditions surrounding the hearing aid change quickly. It also is useful to not impose feedback cancellation to longer notes that will 'fool' less sophisticated acoustic feedback cancellers into thinking the sound is feedback.