公开(公告)号：US11651778B2

公开(公告)日：2023-05-16

申请号：US17520895

申请日：2021-11-08

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Woo-taek Lim ,  Seung Kwon Beack ,  Jongmo Sung ,  Tae Jin Lee ,  Inseon Jang ,  Jong-Won Seok ,  Yunsu Kim

IPC: G10L19/16 ,  G10L19/02 ,  G10L25/30 ,  G10L19/038

CPC classification number: G10L19/038 ,  G10L19/02 ,  G10L19/167 ,  G10L25/30

Abstract: Disclosed are methods of encoding and decoding an audio signal, and an encoder and a decoder for performing the methods. The method of encoding an audio signal includes identifying an input signal corresponding to a low frequency band of the audio signal, windowing the input signal, generating a first latent vector by inputting the windowed input signal to a first encoding model, transforming the windowed input signal into a frequency domain, generating a second latent vector by inputting the transformed input signal to a second encoding model, generating a final latent vector by combining the first latent vector and the second latent vector, and generating a bitstream corresponding to the final latent vector.