Journal of Broadcast Engineering (방송공학회논문지)

The Korean Institute of Broadcast and Media Engineers (한국방송∙미디어공학회)
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A 3D Audio Codec Employing a Revised Noise Filling Method

수정된 잡음 채움 기법을 적용한 3D 오디오 부호기

  • 김인철 (서울시립대학교 전자전기컴퓨터공학부)
  • Received : 2021.03.05
  • Accepted : 2021.04.09
  • Published : 2021.05.30
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Abstract

In this paper, a new noise filling method is proposed for improving the performance of the 3D audio codec. In the new method, the core band is limited up to MAX_SFB, not up to the IGF start frequency. And the noise filling is applied to all frequency range of the IGF source patches. We conduct the MUSHRA test and find that the proposed noise filling method demonstrates better performance than the conventional method.

본 논문에서는 3D 오디오 부호기의 성능 향상을 위해 새로운 잡음 채움 기법을 제안한다. 제안한 잡음 채움 기법에서는 핵심 대역을 IGF 시작 주파수까지가 아니라 MAX_SFB로 설정되는 영역까지로 제한한다. 그리고, IGF 입력 패치의 모든 주파수 영역에 잡음 채움이 수행되도록 한다. 본 논문에서 수정된 잡음 채움 기법의 성능은 MUSHRA 테스트를 통해 평가되었고, 그 결과 기존의 방법보다 우수한 성능을 보임을 입증한다.

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Acknowledgement

This work was supported by the 2018 sabbatical year research grant of the University of Seoul.

References

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