Proceedings of the Acoustical Society of Korea Conference (한국음향학회:학술대회논문집)
- 1998.06e
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- Pages.23-26
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- 1998
A Study on the Dynamic Window Switching MDCT for Enhanced AC-3 Audio Filterbank
다이나믹 윈도우 스위칭기법을 적용한 AC-3 오디오 필터뱅크의 성능향상에 관한 연구
Abstract
This paper presents a technique to enhance TDAC in the AC-3 algorithm. To reduce block boundary noise without decreasing the performance of transform coding, new special window adopted. They improves the defect of the AC-3 algorithm that could not properly cancel aliasing in the tansient period. In addition, a fast MDCT calculation algorithm based on a fast Fourier Transform, is adopted.
Keywords