Title :
Architecture of dual mode audio filter for AC-3 and MPEG
Author :
Jhung, Y. ; Park, S.
Author_Institution :
Div. of Syst. LSI, Samsung Electron., South Korea
fDate :
8/1/1997 12:00:00 AM
Abstract :
This paper presents the architecture of dual mode audio reconstruction filter which can be used for AC-3 and MPEG. The structure consists of the real FFT (fast Fourier transform), the efficient MPEG windowing, and a polyphase filter for rate conversion. The theoretical analysis and implementation are also covered. The proposed dual mode filter and windowing algorithms reduce the computational complexity and hardware requirements as a result
Keywords :
audio coding; band-pass filters; code standards; computational complexity; discrete cosine transforms; fast Fourier transforms; filtering theory; inverse problems; telecommunication standards; transform coding; AC-3; MPEG audio coding standard; MPEG windowing; computational complexity reduction; dual mode audio filter architecture; dual mode audio reconstruction filter; fast Fourier transform; filter banks; modified discrete cosine transform; polyphase filter; rate conversion; real FFT; windowing algorithms; Bit rate; Computational complexity; Decoding; Filter bank; Hardware; Large scale integration; Signal to noise ratio; Streaming media; Testing; Transform coding;
Journal_Title :
Consumer Electronics, IEEE Transactions on
