US 12,334,083 B2
Apparatus and method for audio encoding/decoding robust to transition segment encoding distortion
Seung Kwon Beack, Daejeon (KR); Jongmo Sung, Daejeon (KR); Mi Suk Lee, Daejeon (KR); Tae Jin Lee, Daejeon (KR); Woo-taek Lim, Daejeon (KR); and Inseon Jang, Daejeon (KR)
Assigned to ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Daejeon (KR)
Appl. No. 18/014,924
Filed by ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Daejeon (KR)
PCT Filed Jul. 2, 2021, PCT No. PCT/KR2021/008417
§ 371(c)(1), (2) Date Jan. 6, 2023,
PCT Pub. No. WO2022/010189, PCT Pub. Date Jan. 13, 2022.
Claims priority of application No. 10-2020-0083086 (KR), filed on Jul. 6, 2020; and application No. 10-2020-0186628 (KR), filed on Dec. 29, 2020.
Prior Publication US 2024/0087577 A1, Mar. 14, 2024
Int. Cl. G10L 19/005 (2013.01); G10L 19/16 (2013.01)
CPC G10L 19/005 (2013.01) [G10L 19/167 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An audio decoding method comprising:
outputting a time domain residual signal by dequantizing a received signal;
outputting a frequency domain residual signal by linear prediction coefficient (LPC) analysis of the time domain residual signal;
outputting a frequency domain signal by performing frequency domain noise shaping (FDNS) decoding on the frequency domain residual signal;
outputting a time domain signal by frequency-to-time (F/T) transform of the frequency domain signal; and
restoring an input signal by performing time domain aliasing cancellation (TDAC) on the time domain signal.
 
5. An audio decoding method comprising:
outputting a time domain residual signal by dequantizing a received signal;
outputting a time domain signal by temporal noise shaping (TNS)-2 decoding of the time domain residual signal;
outputting a frequency domain residual signal by time-to-frequency (T/F) transform of the time domain signal;
outputting a frequency domain signal by performing frequency domain noise shaping (FDNS) decoding on the frequency domain residual signal;
outputting a second time domain signal by frequency-to-time (F/T) transform of the frequency domain signal; and
restoring an input signal by performing time domain aliasing cancellation (TDAC) on the second time domain signal.
 
9. An audio decoding method comprising:
outputting a time domain residual signal by dequantizing a received signal;
outputting a time domain signal by temporal noise shaping (TNS)-2 decoding of the time domain residual signal; and
restoring an input signal by synthesizing the time domain signal with linear prediction coefficient (LPC) information received from an audio encoding apparatus.