US Patent No. 10,455,346

METHOD AND DEVICE FOR AUDIO SIGNAL PROCESSING


Patent No. 10,455,346
Issue Date October 22, 2019
Title Method And Device For Audio Signal Processing
Inventorship Taegyu Lee, Seongnam-si (KR)
Hyunoh Oh, Gwacheon-si (KR)
Assignee WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., Seongnam-si (KR)

Claim of US Patent No. 10,455,346

1. A method for processing an audio signal, the method comprising:receiving an input audio signal including a plurality of subband signals, wherein the plurality of subband signals include a first subband group containing only low-frequency subband signals determined based on a predetermined frequency band and a second subband group containing only high-frequency subband signals determined based on the predetermined frequency band;
performing a first filtering on each subband signal of the first subband group; and
performing a second filtering on each subband signal of the second subband group, wherein the second filtering is distinct from the first filtering,
wherein the first filtering is performed by using a first parameter set including one or more parameters for a corresponding subband and the second filtering is performed by using a second parameter set including one or more parameters for a corresponding subband,
wherein characteristics of the first parameter set is different from characteristics of the second parameter set,
wherein the second parameter set includes a set of gain and delay for the corresponding subband, and
wherein the second filtering comprises performing one-tap-delay line filtering on each subband signal of the second subband group by using the set of gain and delay for the corresponding subband.