首页>
外国专利>
METHOD AND APPARATUS FOR AUDIO OBJECT CODING BASED ON INFORMED SOURCE SEPARATION
METHOD AND APPARATUS FOR AUDIO OBJECT CODING BASED ON INFORMED SOURCE SEPARATION
展开▼
机译:基于信息源分离的音频对象编码方法和装置
展开▼
页面导航
摘要
著录项
相似文献
摘要
To represent and recover the constituent sources present in an audio mixture, informed source separation techniques are used. In particular, a universal spectral model (USM) is used to obtain a sparse time activation matrix for an individual audio source in the audio mixture. The indices of non-zero groups in the time activation matrix are encoded as the side information into a bitstream. The non-zero coefficients of the time activation matrix may also be encoded into the bitstream. At the decoder side, when the coefficients of the time activation matrix are included in the bitstream, the matrix can be decoded from the bitstream. Otherwise, the time activation matrix can be estimated from the audio mixture, the non-zero indices included in the bitstream, and the USM model. Given the time activation matrix, the constituent audio sources can be recovered based on the audio mixture and the USM model.
展开▼