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。

公开(公告)号：US20130124216A1

公开(公告)日：2013-05-16

申请号：US13738786

申请日：2013-01-10

Applicant: Huawei Technologies Co., Ltd.

Inventor： Chen Hu ,  Zexin Liu ,  Lei Miao ,  Longyin Chen ,  Qing Zhang ,  Wei Xiao ,  Marcel Taddei Herve

IPC: G10L21/00

CPC classification number: G10L21/00 ,  G10L19/24

Abstract: A method, device, and system for signal encoding and decoding are disclosed. The method includes: encoding a core layer signal to obtain a core layer signal code; selecting an enhancement sample point that requires enhancement layer signal encoding according to the core layer signal code and the number of bits that can be used by an enhancement layer; obtaining an enhancement layer signal code of the enhancement sample point; and outputting a bit stream, where the bit stream includes the core layer signal code and the enhancement layer signal code. According to the number of bits that can be used by the enhancement layer, the enhancement sample point that requires enhancement layer signal encoding is selected; the enhancement layer signal of the selected enhancement sample point is encoded and decoded; when no sufficient bits are available for the enhancement layer, the enhancement quality of the core layer can be improved.

Abstract translation: 公开了用于信号编码和解码的方法，装置和系统。 该方法包括：编码核心层信号以获得核心层信号码; 选择需要根据核心层信号码的增强层信号编码和增强层可以使用的位数的增强采样点; 获得增强采样点的增强层信号码; 并输出比特流，其中比特流包括核心层信号码和增强层信号码。 根据增强层可以使用的比特数，选择需要增强层信号编码的增强采样点; 所选择的增强采样点的增强层信号被编码和解码; 当没有足够的比特可用于增强层时，可以提高核心层的增强质量。