Efficient Windowing Scheme for MDCT-Based TCX in AMR-WB+

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概要

• 論文の詳細を見る

• Although the AMR-WB+ coder provides excellent quality for speech signal, its coding model for music signals is not as optimal as the HE-AAC v2. The main causes of the poor quality of the AMR-WB+ TCX are the non-critical sampling and block artifacts. The new TCX windowing scheme proposed in this paper uses an MDCT with a 50% frame overlap, so that the problems of non-critical sampling and blocking artifacts are significantly mitigated. Due to long overlaps, the proposed scheme involves an additional codec delay. It is, however, moderate for audio services. The results of objective and subjective tests indicate that the proposed scheme achieves noticeable quality improvements for music signals over the previous TCX schemes.

• 2011-06-01

著者

• Park Young-cheol

  Division Of Information Technology Yonsei University

• Youn Dae‐hee

  Yonsei Univ. Seoul Kor

• Youn Dae-hee

  Yonsei University

• LEE Jae-Seong

  Yonsei University

• PARK Young-Cheol

  Yonsei University

• YOUN Dae-Hee

  Dept. of Electrical and Computer Eng. Yonsei Univ.

• Kang Kyung-ok

  Electronics And Telecommunications Research Institute

• LEE Jae-seong

  Dept. of Electrical & Electronic Eng. Yonsei University

• PARK Young-cheol

  Dept. of Computer & Telecommunications Eng. Yonsei University

• YOUN Dae-Hee

  Dept. of Electrical & Electronic Eng. Yonsei University

関連論文

• Efficient FFT Algorithm for Psychoacoustic Model of the MPEG-4 AAC
• A GMM-Based Feature Selection Algorithm for Multi-Class Classification
• Design of Time-Varying Reverberators for Low Memory Applications
• A Robust Room Inverse Filtering Algorithm for Speech Dereverberation Based on a Kurtosis Maximization
• Speaker Adaptation Based on a Maximum Observation Probability Criterion
• Efficient Windowing Scheme for MDCT-Based TCX in AMR-WB+

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