Earticle

초록

영어

In this paper, we address issues associated with the real-time implementation of upmixing stereo audio into 5.1 channel audio in order to improve audio realism. First, we review four different upmixing methods, including a passive surround decoding method, a least-meansquare based upmixing method, a principal component analysis based upmixing method, and an adaptive panning method. After that, we implement a simulator that includes the upmixing methods and audio controls to play both stereo and upmixed 5.1 channel audio signals. Finally, we carry out a MUSHRA test to compare the quality of the upmixed 5.1 channel audio signals to that of the original stereo audio signal. It is shown from the test that the upmixed 5.1 channel audio signals generated by the four different upmixing methods are preferred to the original stereo audio signals.

목차

Abstract
 1. Introduction
 2. Audio Upmixing Algorithm from Stereo to 5.1 Channel Audio
  2.1. Passive Surround Decoding Method
  2.2. LMS-based Upmixing Method
  2.3. PCA-based Upmixing Method
  2.4. Adaptive Panning Method
  2.5. Low-pass Filters
  2.6. Time Delay and ±90° Phase Shifter
 3. Design and Implementation of an Audio Upmixing Simulator
 4. Performance Evaluation
 5. Conclusion
 References

키워드

저자

• Chan Jun Chun [ Department of Information and Communications Gwangju Institute of Science and Technology ]
• Yong Guk Kim [ Department of Information and Communications Gwangju Institute of Science and Technology ]
• Jong Yeol Yang [ Department of Information and Communications Gwangju Institute of Science and Technology ]
• Hong Kook Kim [ Department of Information and Communications Gwangju Institute of Science and Technology ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Signal Processing, Image Processing and Pattern Recognition

• 간기

  격월간

• pISSN

  2005-4254

• 수록기간

  2008~2016

• 십진분류

  KDC 505 DDC 605