公开(公告)号：US20130304460A1

公开(公告)日：2013-11-14

申请号：US13943812

申请日：2013-07-17

Applicant: Huawei Technologies Co., Ltd.

Inventor： Dejun Zhang ,  Lei Miao ,  Jianfeng Xu ,  Fengyan Qi ,  Qing Zhang ,  Lixiong Li ,  Fuwei Ma ,  Yang Gao

IPC: G10L19/09

CPC classification number: G10L19/09 ,  G10L19/0017 ,  H04N19/50

Abstract: The present disclosure relates to a method, apparatus, and system for encoding and decoding signals. The encoding method includes: converting a first-domain signal into a second-domain signal; performing Linear Prediction (LP) processing and Long-Term Prediction (LTP) processing for the second-domain signal; obtaining a long-term flag value according to a decision criterion; obtaining a second-domain predictive signal according to the LP processing result and the LTP processing result when the long-term flag value is a first value; obtaining a second-domain predictive signal according to the LP processing result when the long-term flag value is a second value; converting the second-domain predictive signal into a first-domain predictive signal, and calculating a first-domain predictive residual signal; and outputting a bit stream that includes the first-domain predictive residual signal.

Abstract translation: 本公开涉及用于对信号进行编码和解码的方法，装置和系统。 编码方法包括：将第一域信号转换为第二域信号; 对第二域信号执行线性预测（LP）处理和长期预测（LTP）处理; 根据决策标准获得长期标志值; 当长期标志值为第一值时，根据LP处理结果和LTP处理结果获得第二域预测信号; 当长期标志值是第二值时，根据LP处理结果获得第二域预测信号; 将所述第二域预测信号转换为第一域预测信号，以及计算第一域预测残差信号; 并输出包括第一域预测残差信号的比特流。

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。

公开(公告)号：US20130117030A1

公开(公告)日：2013-05-09

申请号：US13728256

申请日：2012-12-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: G10L19/008

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。