公开(公告)号：US20100106269A1

公开(公告)日：2010-04-29

申请号：US12428336

申请日：2009-04-22

申请人： Harinath Garudadri ,  Yen-Liang Shue ,  Somdeb Majumdar

发明人： Harinath Garudadri ,  Yen-Liang Shue ,  Somdeb Majumdar

IPC分类号： G06F17/00 ,  H04R1/10 ,  H04B1/034 ,  H03M7/00 ,  G04B47/00 ,  G10L19/00

CPC分类号： H03M7/50 ,  G10L19/0204 ,  G10L19/0212 ,  G10L19/032

摘要： A method and apparatus for audio signal processing by applying log companding on spectral domain or time domain representations of the audio signals to provide an encoded audio signal, which is decoded upon receipt. A frequency domain representation or time domain representation of the audio signal is computed by separating the audio signal into specific frequency bands, each having a coefficient. Log companding with different compression ratios is performed on each coefficient to provide an encoded signal. Upon receipt of the encoded signal, inverse log companding and time frequency or time scale reconstruction are performed to provide the audio signal.

摘要翻译： 一种用于音频信号处理的方法和装置，其通过在音频信号的频域或时域表示上应用对数压缩，以提供编码的音频信号，其在接收时被解码。 通过将音频信号分离成各自具有系数的特定频带来计算音频信号的频域表示或时域表示。 对每个系数执行具有不同压缩比的对数压扩比以提供编码信号。 在接收到编码信号时，执行逆对数压缩和时间频率或时标重建以提供音频信号。