A VLSI implementation of filterbank for MPEG2/4 AAC encoder

Tsung Han Tsai, Yu Jie Sha

研究成果: 書貢獻/報告類型會議論文篇章同行評審

摘要

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.

原文???core.languages.en_GB???
主出版物標題Applied Materials and Electronics Engineering, AMEE 2012
頁面569-572
頁數4
DOIs
出版狀態已出版 - 2012
事件2012 International Conference on Applied Materials and Electronics Engineering, AMEE 2012 - HongKong, Hong Kong
持續時間: 18 1月 201219 1月 2012

出版系列

名字Advanced Materials Research
378-379
ISSN(列印)1022-6680

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???event.eventtypes.event.conference???2012 International Conference on Applied Materials and Electronics Engineering, AMEE 2012
國家/地區Hong Kong
城市HongKong
期間18/01/1219/01/12

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