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

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.