Proceedings of the Annual Conference of the Institute of Systems, Control and Information Engineers
The 50th Annual Conference of the Institute of Systems, Control and Information Engineers
Session ID : 6T1-5
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Host: The Institute of Systems, Control and Information Engineers

High Frequency Compensation for Compressed Digital Audio using Sampled-Data Control
*Koji Fujiyama, Naoya Iwasaki, Riku Kaibe, Hiroshi Kano
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Keywords: Sampled-Data Control, Digital Signal Processing, Compressed Digital Audio, MP3, PEAQ
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Abstract
Compressed digital audio technology removes high frequency component data, which causes sound quality degradation. We have applied Sampled-Data Control to high frequency compensation of compressed audio signals. As a result, high frequency components are compensated so that they are close to the frequency spectrum of CDs. PEAQ(Perceived Evaluation of Audio Quality) also shows that the sound is remarkably improved.
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© 2006 The Institute of Systems, Control and Information Engineers
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