A VLSI Implementation of Filterbank for MPEG2/4 AAC Encoder

Tsung Han Tsai; Yu Jie Sha

doi:10.4028/www.scientific.net/AMR.378-379.569

Paper Titles

Electric Motor Fault Analysis Based on Windowed-Zeropadded FFT
p.553

Application of Signal Processing for Motor Condition Monitoring Based on Filtered-Signals and Eliminated-Signals
p.557

A New Method of Electric Motor Fault Detection Based on Bi-Spectrum of Eliminated Signals
p.561

Study of Fraunhofer Diffraction Pattern from a Circular Aperture Using an Optical Fiber Microprobe
p.565

A VLSI Implementation of Filterbank for MPEG2/4 AAC Encoder
p.569

Inverse Hall-Petch Effect of Hardness in Nanocrystalline Ta Films
p.575

Comparison of Mechanical Properties between Thai Orthodontic Elastics with Different Ammonia Contents and Commercial Orthodontic Elastics
p.580

Design and Experimental Evaluation of a Novel 2 DOF Haptic Master Device Featuring Magneto-Rheological Fluid
p.585

Magnetic Phase Transitions in Ultrathin Films of Different Crystal Structures
p.589

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 378-379A VLSI Implementation of Filterbank for MPEG2/4...

A VLSI Implementation of Filterbank for MPEG2/4 AAC Encoder

Abstract:

In this paper, we proposed a VLSI architecture of the modified discrete cosine transform (MDCT) for MPEG 2/4 AAC encoders. The MDCT transforms the time domain input signals to the frequency domain spectrums. It is considered one of the most computational intensive part in implementing the AAC encoder. The AAC encoder allows four types of audio blocks while encoding the audio files. With our algorithm, the proposed design can share the coefficients needed in the MDCT. Moreover, we used a 2-dimensional folding technique to reduce the hardware cost while maintaining the audio quality. The proposed design is realized in TSMC 0.18-um 1P6M technology and is operated at 50 MHz. With these techniques on special hardware design, the result shows some advantages on low complexity.

You might also be interested in these eBooks

Applied Materials and Electronics Engineering

View Preview

Info:

Periodical:

Advanced Materials Research (Volumes 378-379)

Pages:

569-572

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.378-379.569

Citation:

Cite this paper

Online since:

October 2011

Authors:

Tsung Han Tsai, Yu Jie Sha

Keywords:

Digital Audio Coding, Filterbank, MDCT, MPEG-2/4 AAC Encoder

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] ISO/IEC JTC1/SC29 WG11 No.1650, "IS 13818-7 (MPEG-2 Advanced Audio Coding, AAC), " April 1997.

Google Scholar

[2] Marina Bosi, Karlheinz Brandenburg, Schuyler Quackenbush, Louis Fielder, Kenzo Akagiri, Hendrik Fuchs, Martin Dietz, Jurgen Herre, Grant Davidson, Yoshiaki Oikawa, "ISO/IEC MPEG-2 Advanced Audio Coding, " J. Audio Eng. Soc., Vol. 45, No. 10, 1997 October.

Google Scholar

[3] Y. Wang, L. Yaroslavsky, M. Vilermo, "On the relationship between MDCT, SDPT and DFT, " in International Conference on Signal Processing Proceedings, 2000. WCCC-ICSP 2000. 5th , Vol. 1, Page(s): 44-47.

DOI: 10.1109/icosp.2000.894440

Google Scholar

[4] P. Duhamel, Y. Mahieux, and J.-P. Petit, "A fast algorithm for the implementation of filter banks based on 'time domain aliasing cancellation', " in Proc. IEEE ICASSP. vol.3 pp.2009-2212 Apr. 1991.

DOI: 10.1109/icassp.1991.150853

Google Scholar

[5] D. J. Zhou, P. Li Liu, J. Kong, Y.F. Zhang, B. He, and N. Deng, "An SoC based HW/SW co-design architecture for multi-standard audio decoding, " in Conf. IEEE ASSCC, pp.200-203, Nov. 2007.

DOI: 10.1109/asscc.2007.4425765

Google Scholar

[6] C.H Chen, B.D Liu, and J.F Yang, "Recursive architectures for realizing modified discrete cosine transform and its inverse, " IEEE Trans. Circuit and System II Analog and Digital Signal Processing, vo1.50 pp.38-45 Jan. 2003.

DOI: 10.1109/tcsii.2003.808895

Google Scholar