US Patent No. 9,832,585

AUDIO SIGNAL PROCESSING METHOD AND APPARATUS


Patent No. 9,832,585
Issue Date November 28, 2017
Title Audio Signal Processing Method And Apparatus
Inventorship Hyunoh Oh, Gyeonggi-do (KR)
Taegyu Lee, Gyeonggi-do (KR)
Jinsam Kwak, Gyeonggi-do (KR)
Juhyung Son, Gyeonggi-do (KR)
Assignee Wilus Institute of Standards and Technology Inc., Seoul (KR)

Claim of US Patent No. 9,832,585

6. An apparatus for processing an audio signal for performing binaural rendering for an input audio signal, the apparatus
comprising:
a parameterization unit configured to generate a filter for the input audio signal; and
a binaural rendering unit configured to receive the input audio signal including a multi-channel signal and filter the input
audio signal by using parameters generated by the parameterization unit,

wherein the binaural rendering unit is further configured to:
receive truncated subband filter coefficients for filtering the input audio signal from the parameterization unit, the truncated
subband filter coefficients being at least some of subband filter coefficients obtained from binaural room impulse response
(BRIR) filter coefficients for binaural filtering of the input audio signal and the length of the truncated subband filter
coefficients being determined based on filter order information obtained by at least partially using reverberation time information
extracted from the corresponding subband filter coefficients,

obtain vector information indicating the BRIR filter coefficients corresponding to each channel of the input audio signal,
and

filter each subband signal of the multi-channel signal by using the truncated subband filter coefficients corresponding to
the relevant channel and subband based on the vector information.