US Patent No. 9,578,437

METHOD AND APPARATUS FOR PROCESSING AUDIO SIGNALS


Patent No. 9,578,437
Issue Date February 21, 2017
Title Method And Apparatus For Processing Audio Signals
Inventorship Hyunoh Oh, Gwacheon-si (KR)
Taegyu Lee, Seongnam-si (KR)
Assignee WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., Seoul (KR)

Claim of US Patent No. 9,578,437

1. A method for processing an audio signal, the method comprising:
receiving multi-audio signals including multi-channel or multi-object signals, each multi-audio signal including a plurality
of subband signals;

receiving truncated subband filter coefficients for filtering the multi-audio signals, the truncated subband filter coefficients
being at least a portion of subband filter coefficients obtained from binaural room impulse response (BRIR) filter coefficients
for binaural filtering of the multi-audio signals, lengths of the truncated subband filter coefficients being determined based
on filter order information obtained by at least partially using characteristic information extracted from the corresponding
subband filter coefficients, and a length of truncated subband filter coefficients of at least one subband being different
from a length of truncated subband filter coefficients of another subband; and

filtering each subband signal of the multi-audio signals by using truncated subband filter coefficients corresponding to each
subband signal.