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:
Mar. 23, 2021
Filed:
Jan. 29, 2020
Applicant:
Apple Inc., Cupertino, CA (US);
Inventors:
Frank Baumgarte, Sunnyvale, CA (US);
Eric A. Allamanche, Sunnyvale, CA (US);
Stefan K. O. Strommer, Mountain View, CA (US);
Assignee:
APPLE INC., Cupertino, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03G 3/20 (2006.01); G10L 21/0316 (2013.01); G10L 19/008 (2013.01); H03G 7/00 (2006.01);
U.S. Cl.
CPC ...
H03G 3/20 (2013.01); G10L 19/008 (2013.01); G10L 21/0316 (2013.01); H03G 7/007 (2013.01);
Abstract
An audio normalization gain value is applied to an audio signal to produce a normalized signal. The normalized signal is processed to compute dynamic range control (DRC) gain values in accordance with a selected one of several pre-defined DRC characteristics. The audio signal is encoded, and the DRC gain values are provided as metadata associated with the encoded audio signal. Several other embodiments are also described and claimed.