Unified speech/audio codec (USAC) processing windows sequence based mode switching
Seungkwon Beack, Daejeong (KR); Tae Jin Lee, Daejeon (KR); Min Je Kim, Daejeon (KR); Kyeongok Kang, Daejeon (KR); Dae Young Jang, Daejeon (KR); Jeongil Seo, Daejeon (KR); Jin Woo Hong, Daejeon (KR); Chieteuk Ahn, Daejeon (KR); Ho Chong Park, Seoul (KR); and Young-cheol Park, Wonju-si (KR)
Assigned to ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Daejeon (KR); and KWANGWOON UNIVERSITY INDUSTRY-ACADEMIC COLLABORATION FOUNDATION, Seoul (KR)
Filed by ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Daejeon (KR); and KWANGWOON UNIVERSITY INDUSTRY-ACADEMIC COLLABORATION FOUNDATION, Seoul (KR)
Filed on Aug. 25, 2022, as Appl. No. 17/895,256.
Application 17/895,256 is a continuation of application No. 16/835,728, filed on Mar. 31, 2020, granted, now 11,430,458.
Application 16/835,728 is a continuation of application No. 15/980,012, filed on May 15, 2018, granted, now 10,622,001, issued on Apr. 14, 2020.
Application 15/980,012 is a continuation of application No. 15/200,404, filed on Jul. 1, 2016, granted, now 10,002,619, issued on Jun. 19, 2018.
Application 15/200,404 is a continuation of application No. 14/588,638, filed on Jan. 2, 2015, granted, now 9,384,748, issued on Jul. 5, 2016.
Application 14/588,638 is a continuation of application No. 13/131,424, granted, now 8,954,321, issued on Feb. 10, 2015, previously published as PCT/KR2009/007011, filed on Nov. 26, 2009.
Claims priority of application No. 10-2008-0118230 (KR), filed on Nov. 26, 2008; application No. 10-2008-0133007 (KR), filed on Dec. 24, 2008; application No. 10-2009-0004243 (KR), filed on Jan. 19, 2009; application No. 10-2009-0008590 (KR), filed on Feb. 3, 2009; and application No. 10-2009-0114783 (KR), filed on Nov. 25, 2009.
Prior Publication US 2022/0406321 A1, Dec. 22, 2022
1. A signal processing method processed by a processor, comprising:
identifying a first window for a previous frame of an input signal;
identifying a second window for a current frame of the input signal;
modifying a slope of a left portion of the second window based on the first window; and
processing the current frame using a modified second window having a modified left portion by performing overlap-add operation between the previous frame applied to the first window and the current frame applied to the modified second window,
wherein the slope of the left portion of the second window corresponds to a region for performing overlap-add operation with the first window.
