US 11,657,325 B2
Apparatus and method for augmenting training data using notch filter
Young Ho Jeong, Daejeon (KR); Soo Young Park, Daejeon (KR); Sang Won Suh, Daejeon (KR); Woo-Taek Lim, Daejeon (KR); Minhan Kim, Daegu (KR); and Seokjin Lee, Daegu (KR)
Assigned to Electronics and Telecommunications Research Institute, Daejeon (KR); and Kyungpook National University Industry-Academic Cooperation Foundation, Daegu (KR)
Filed by Electronics and Telecommunications Research Institute, Daejeon (KR); and Kyungpook National University Industry-Academic Cooperation Foundation, Daegu (KR)
Filed on Jul. 13, 2020, as Appl. No. 16/927,691.
Claims priority of application No. 10-2019-0163701 (KR), filed on Dec. 10, 2019.
Prior Publication US 2021/0174252 A1, Jun. 10, 2021
Int. Cl. G06N 20/00 (2019.01); G06F 17/18 (2006.01)
CPC G06N 20/00 (2019.01) [G06F 17/18 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A method of augmenting training data, the method comprising:
obtaining, via an input interface, original data;
obtaining, via a processor coupled to the input interface, training data having a transformed frequency component from the original data by filtering the original data; and
obtaining training data having transformed frequency and time components based on the original data by deleting a predetermined range of data on a time axis of the training data having the transformed frequency component,
wherein a filter coupled to the processor is configured to remove a component of a predetermined frequency band, and
wherein the obtaining of the training data having the transformed time component comprises obtaining the training data having the transformed frequency and time components by determining two points on the time axis of the training data having the transformed frequency component according to a uniform distribution probability variable and by removing signal energy included in an interval between the determined points.