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:
Feb. 12, 2019
Filed:
May. 30, 2014
Apple Inc., Cupertino, CA (US);
James E. McCartney, San Jose, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
Method for improving audio time stretching starts with processor receiving input media file and rate schedule. Rate schedule includes identification of portions of input media file and playback output rates associated with each of the portions of input media file. Writer thread being executed by processor generates timeline that is linked list including segments that respectively represent portions of input media file and associated playback output rates as desired playback rate curves. Generating timeline include writing each segment in linked list to end of linked list. Processor then performs time scaling of media file based on rate schedule to generate output media file. Performing time scaling of media file includes identifying by reader thread being executed by processor a segment in timeline corresponding to desired output time, and translating by reader thread desired output time to corresponding input time based on identified segment. Other embodiments are described.