首页> 外文会议>Audio Engineering Society 122nd Convention >Low Power Stereo Perceptual Audio Coding Based on Adaptive Masking Threshold Reuse
【24h】

Low Power Stereo Perceptual Audio Coding Based on Adaptive Masking Threshold Reuse

机译:基于自适应掩蔽阈值重用的低功率立体声感知音频编码

获取原文
获取原文并翻译 | 示例

摘要

The term perceptual audio coder refers to audio compression schemes that exploit the properties of human auditory perception. The idea is to allocate the quantization noise elegantly below the masking threshold to make it imperceptible to the ear. The process requires considerable computational effort, especially due to the psychoacoustics analysis and bit allocation-quantization process. This paper proposes a new method to simplify the psychoacoustics modelling process by adaptively reusing the computed masking threshold depending on the signal characteristics. The method also device a scheme to patch the potential spectral hole problems that might occur when the quantization parameters are reused. This proposal can be applied to generic stereo perceptual audio encoder where low computational complexity is required.
机译:术语感知音频编码器是指利用人类听觉特性的音频压缩方案。想法是将量化噪声优雅地分配在掩蔽阈值以下,以使耳朵无法察觉。该过程需要大量的计算工作,特别是由于心理声学分析和位分配量化过程。本文提出了一种新方法,可以根据信号特征自适应地重用计算出的掩蔽阈值,从而简化心理声学建模过程。该方法还提供一种解决方案,用于修补在重新使用量化参数时可能发生的潜在频谱空洞问题。该建议可以应用于需要低计算复杂度的通用立体声感知音频编码器。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号