首页> 外国专利> linear prediction-based audio encoder and decoder, methods for encoding and decoding linear prediction-based audio, and computer program

linear prediction-based audio encoder and decoder, methods for encoding and decoding linear prediction-based audio, and computer program

机译:基于线性预测的音频编码器和解码器,用于对基于线性预测的音频进行编码和解码的方法以及计算机程序

摘要

“Linear prediction based audio encoder and decoder, methods for encoding and decoding linear prediction based audio and computer program” summary linear prediction based audio encoding is enhanced by encoding a spectrum composed of a plurality of spectral components using a probability distribution estimation determined for each of the plurality of spectral components from linear prediction coefficient information. in particular, linear prediction coefficient information is available anyway. therefore, it can be used to determine the probability distribution estimation on both coding and decoding sides. The latter determination can be implemented in a computationally simple manner using, for example, appropriate parameterization for estimating the probability distribution in the plurality of spectral components. All in all, the coding efficiency as provided by entropy coding is compatible with probability distribution estimates as achieved using context selection, but its derivation is less complex. for example, the derivation may be purely analytically and / or does not require any information about neighborhood spectral line attributes such as previously encoded / decoded spectral values of neighborhood spectral lines as is the case in spatial context selection. 1/1
机译:“基于线性预测的音频编码器和解码器,用于对基于线性预测的音频进行编码和解码的方法以及计算机程序”概述基于线性预测的音频编码通过使用针对每个像素确定的概率分布估计对由多个频谱分量组成的频谱进行编码来增强来自线性预测系数信息的多个频谱分量。特别地,线性预测系数信息始终可用。因此,它可以用于确定编码和解码双方的概率分布估计。可以使用例如适当的参数化以计算简单的方式来实现后一种确定,该适当的参数化用于估计多个频谱分量中的概率分布。总而言之,由熵编码提供的编码效率与使用上下文选择实现的概率分布估计兼容,但是其推导不那么复杂。例如,推导可以纯粹是分析性的和/或不需要关于邻域谱线属性的任何信息,例如空间上下文选择中的情况,例如邻域谱线的先前编码/解码谱值。 1/1

著录项

相似文献

  • 专利
  • 外文文献
  • 中文文献
获取专利

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