公开(公告)号：US20140207445A1

公开(公告)日：2014-07-24

申请号：US14219773

申请日：2014-03-19

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yang Gao ,  Herve Marcel Taddei ,  Lei Miao

IPC: G10L19/00

CPC classification number: G10L19/0017 ,  G10L19/005

Abstract: In an embodiment, a method of receiving a digital audio signal, using a processor, includes generating a high band time domain signal; generating low band time domain signal; estimating an energy ratio between the high band and the low band from a last good frame; keeping the energy ratio for following frame-erased frames by applying an energy correction scaling gain to a high band signal segment by segment in the time domain; and combining the low band signal and the high band signal into a final output.

Abstract translation: 在一个实施例中，使用处理器接收数字音频信号的方法包括产生高频带时域信号; 产生低频时域信号; 从最后的良好帧估计高频带和低频带之间的能量比; 通过在时域中逐段对高频带信号进行能量校正缩放增益来保持随后的帧擦除帧的能量比; 并将低频带信号和高频带信号组合成最终输出。

公开(公告)号：US08560329B2

公开(公告)日：2013-10-15

申请号：US13728256

申请日：2012-12-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Fengyan Qi ,  Lei Miao ,  Jianfeng Xu ,  Dejun Zhang ,  Herve Marcel Taddei ,  Qing Zhang

IPC: G10L19/00

CPC classification number: G10L19/008 ,  G10L19/06

Abstract: A signal compression method and apparatus are provided. The signal compression method includes: multiplying an input signal by a window function; calculating original autocorrelation coefficients of a windowed input signal; calculating a white-noise correction factor or a lag-window according to the original autocorrelation coefficients, and calculating modified autocorrelation coefficients according to the original autocorrelation coefficients, the white-noise correction factor and the lag-window; calculating linear prediction coefficients according to the modified autocorrelation coefficients; and outputting a coded bit stream according to the linear prediction coefficients.

Abstract translation: 提供信号压缩方法和装置。 信号压缩方法包括：将输入信号乘以窗口函数; 计算窗口输入信号的原始自相关系数; 根据原始自相关系数计算白噪声校正因子或滞后窗，并根据原始自相关系数，白噪声校正因子和滞后窗计算修正的自相关系数; 根据修正的自相关系数计算线性预测系数; 以及根据线性预测系数输出编码比特流。