US 11,670,311 B2
Time domain spectral bandwidth replication
Wenshun Tian, Palatine, IL (US); and Michael Ryan Lester, Colorado Springs, CO (US)
Assigned to Shure Acquisition Holdings, Inc., Niles, IL (US)
Filed by Shure Acquisition Holdings, Inc., Niles, IL (US)
Filed on Apr. 12, 2021, as Appl. No. 17/228,365.
Application 17/228,365 is a continuation of application No. 16/682,984, filed on Nov. 13, 2019, granted, now 10,978,083.
Prior Publication US 2022/0028402 A1, Jan. 27, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G10L 21/00 (2013.01); G10L 19/00 (2013.01); G10L 19/02 (2013.01); G10L 19/12 (2013.01); G10L 19/16 (2013.01)
CPC G10L 19/0204 (2013.01) [G10L 19/12 (2013.01); G10L 19/167 (2013.01)] 20 Claims
OG exemplary drawing
 
10. A method operable by an audio system, the method comprising:
receiving a bit stream; and
decoding the bit stream, wherein decoding the bit stream comprises:
decomposing the bit stream into a received low band codeword and a received high band codeword;
decoding a low band signal from the received low band codeword;
determining a high band signal type, a gain, and a high band signal template from the received high band codeword;
reconstructing a decoded high band signal based on the high band signal type, the gain, and the high band signal template; and
combining the low band signal and the decoded high band signal into a full band signal.