One Tap Delay Line을 이용한 고주파수대역 바이노럴 처리방법
서정일, 이용주, 강경옥, 백승권, 김진웅, 장대영, 이태규, 오현오, 박영철, 윤대희
- 10692508 (2020.06.23)
13PR3700, 무안경 다시점 3D지원 UHDTV 방송 기술 개발,
- The present invention relates to a method and an apparatus for processing a signal, which are used to effectively reproduce an audio signal, and more particularly, to a method for generating a filter for an audio signal, which are used for implementing a filtering for input audio signals with a low computational complexity and a parameterization apparatus therefor. To this end, provided are a method for generating a filter of an audio signal, including: receiving at least one proto-type filter coefficient for filtering each subband signal of an input audio signal; converting the proto-type filter coefficient into a plurality of subband filter coefficients; truncating each of the subband filter coefficients based on filter order information obtained by at least partially using characteristic information extracted from the corresponding subband filter coefficients, the length of at least one truncated subband filter coefficients being different from the length of truncated subband filter coefficients of another subband; and generating FFT filter coefficients by fast Fourier transforming (FFT) the truncated subband filter coefficients by a predetermined block size in the corresponding subband and a parameterization unit using the same.
- KSP 제안 키워드
- Audio signal, Block size, Characteristic information, Computational complexity, FFT filter, Fast Fourier, Filter coefficients, Filter order, Low Computational Complexity, order information