公开(公告)号：US07617110B2

公开(公告)日：2009-11-10

申请号：US11066431

申请日：2005-02-28

申请人： Junghoo Kim ,  Miao Lei ,  Shihwa Lee ,  Sangwook Kim ,  Ennmi Oh ,  Dohyung Kim

发明人： Junghoo Kim ,  Miao Lei ,  Shihwa Lee ,  Sangwook Kim ,  Ennmi Oh ,  Dohyung Kim

IPC分类号： G10L19/00

CPC分类号： G10L19/0017

摘要： A lossless audio encoding/decoding method, medium, and apparatus. The lossless audio encoding method includes converting an audio signal in a time domain into an audio spectral signal with an integer in a frequency domain, mapping the audio spectral signal in the frequency domain to a bit plane signal according to its frequency, and losslessly encoding binary samples of bit planes using a probability model determined according to a predetermined context. The lossless audio decoding method includes extracting a predetermined lossy bitstream and an error bitstream from error data by demultiplexing an audio bitstream, the error data corresponding to a difference between lossy encoded audio data and an audio spectral signal with an integer in a frequency domain, lossy decoding the extracted encoded lossy bitstream, losslessly decoding the extracted error bitstream, and restoring the original audio frequency spectral signal using the decoded lossy bitstream and error bitstream.

摘要翻译： 无损音频编码/解码方法，介质和装置。 无损音频编码方法包括将时域中的音频信号转换为频域中的整数的音频频谱信号，根据频率将频域中的音频频谱信号映射到比特平面信号，并将无损编码二进制 使用根据预定上下文确定的概率模型的位平面样本。 无损音频解码方法包括通过解复用音频比特流从误差数据中提取预定的有损比特流和错误比特流，对应于有损编码的音频数据与频域中的整数的音频频谱信号之间的差异的误差数据， 解码所提取的编码有损比特流，对所提取的错误比特流进行无损解码，以及使用解码的有损比特流和错误比特流恢复原始音频频谱信号。