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:
Oct. 07, 2014
Filed:
Aug. 09, 2011
Sang-uk Ryu, San Diego, CA (US);
Jongwon Shin, San Diego, CA (US);
Roy Silverstein, San Diego, CA (US);
Andre Gustavo P. Schevciw, San Diego, CA (US);
Pei Xiang, San Diego, CA (US);
Sang-Uk Ryu, San Diego, CA (US);
Jongwon Shin, San Diego, CA (US);
Roy Silverstein, San Diego, CA (US);
Andre Gustavo P. Schevciw, San Diego, CA (US);
Pei Xiang, San Diego, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
An original loudness level of an audio signal is maintained for a mobile device while maintaining sound quality as good as possible and protecting the loudspeaker used in the mobile device. The loudness of an audio (e.g., speech) signal may be maximized while controlling the excursion of the diaphragm of the loudspeaker (in a mobile device) to stay within the allowed range. In an implementation, the peak excursion is predicted (e.g., estimated) using the input signal and an excursion transfer function. The signal may then be modified to limit the excursion and to maximize loudness.