US Patent No. 9,860,668

AUDIO SIGNAL PROCESSING METHOD AND DEVICE


Patent No. 9,860,668
Issue Date January 02, 2018
Title Audio Signal Processing Method And Device
Inventorship Hyun Oh Oh, Gyeonggi-do (KR)
Taegyu Lee, Gyeonggi-do (KR)
Jeongil Seo, Daejeon (KR)
Assignee Wilus Institute Of Standards And Technology Inc., Seoul (KR) Electronics A...

Claim of US Patent No. 9,860,668

1. A method for processing an audio signal, the method comprising:
receiving an input audio signal including a multi-channel signal;
receiving filter order information variably determined for each subband of a frequency domain;
receiving block length information for each subband based on a fast Fourier transform length for each subband of filter coefficients
for binaural filtering of the input audio signal;

receiving Variable Order Filtering in Frequency-domain (VOFF) coefficients corresponding to each subband and each channel
of the input audio signal per block of the corresponding subband, a total sum of lengths of the VOFF coefficients corresponding
to the same subband and the same channel being determined based on the filter order information of the corresponding subband;
and

filtering each subband signal of the input audio signal by using the received VOFF coefficients to generate a binaural output
signal.