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Registered METHOD FOR GENERATING FILTER FOR AUDIO SIGNAL AND PARAMETERIZING DEVICE THEREFOR

One Tap Delay Line을 이용한 고주파수대역 바이노럴 처리방법
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Inventors
Jeongil Seo, Lee Yong Ju, Kang Kyeongok, Beack Seung Kwon, Jin Woong Kim, Jang Dae Young, 오현오, 이태규, 윤대희, 박영철
Application No.
16224820 (2018.12.19)
Publication No.
20190122676 (2019.04.25)
Registration No.
10692508 (2020.06.23)
Country
UNITED STATES
Project Code
13PR3700, Development of Multiview 3D Compatible UHDTV Broadcasting Technology, Jin Woong Kim
Abstract
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 Keywords
Audio signal, Block size, Characteristic information, Computational complexity, FFT filter, Fast Fourier, Filter coefficients, Filter order, Low Computational Complexity, order information
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Status Patent Country KIPRIS
Registered - KOREA
Registered METHOD FOR GENERATING FILTER FOR AUDIO SIGNAL AND PARAMETERIZING DEVICE THEREFOR GERMANY
Registered METHOD FOR GENERATING FILTER FOR AUDIO SIGNAL AND PARAMETERIZING DEVICE THEREFOR UNITED STATES
Registered METHOD FOR GENERATING FILTER FOR AUDIO SIGNAL AND PARAMETERIZING DEVICE THEREFOR UNITED KINGDOM
Registered METHOD FOR GENERATING FILTER FOR AUDIO SIGNAL AND PARAMETERIZING DEVICE THEREFOR CHINA
Registered METHOD FOR GENERATING FILTER FOR AUDIO SIGNAL AND PARAMETERIZING DEVICE THEREFOR CHINA
Registered METHOD FOR GENERATING FILTER FOR AUDIO SIGNAL AND PARAMETERIZING DEVICE THEREFOR FRANCE