公开(公告)号：WO2008033608B1

公开(公告)日：2008-12-18

申请号：PCT/US2007074222

申请日：2007-07-24

Applicant: MOTOROLA INC ,  MITTAL UDAR ,  ASHLEY JAMES P ,  CRUZ-ZENO EDGARDO M

Inventor： MITTAL UDAR ,  ASHLEY JAMES P ,  CRUZ-ZENO EDGARDO M

IPC: G06F15/00

CPC classification number: G06F17/17 ,  G10L19/0212 ,  G10L19/035 ,  H03M7/14

Abstract: The invention utilizes low complexity estimates of complex functions to perform combinatorial coding of signal vectors. The invention disregards the accuracy of such functions as long as certain sufficient properties are maintained. The invention in turn may reduce computational complexity of certain coding and decoding operations by two orders of magnitude or more for a given signal vector input.

Abstract translation: 本发明利用复杂函数的低复杂度估计来执行信号矢量的组合编码。 只要保持某些足够的性能，本发明就忽略了这些功能的准确性。 对于给定的信号矢量输入，本发明又可以将某些编码和解码操作的计算复杂度降低两个数量级或更多。

公开(公告)号：CA2542137C

公开(公告)日：2012-06-26

申请号：CA2542137

申请日：2004-10-26

Applicant: MOTOROLA INC

Inventor： MITTAL UDAR ,  ASHLEY JAMES P

IPC: G10L19/00 ,  G10L19/02 ,  G10L21/02 ,  G10L25/90

Abstract: To address the need for choosing values of harmonic noise weighting (HNW) coefficient (.epsilon.p) so that the amount of harmonic noise weighting can be optimizex, a method and apparatus for performing harmonic noise weighting in digital spech coders is provided herein. During operation, received speech is analyzed (503) to determine a pitch period. HNW coefficients are then chosen (505) based on the pitch period, and a perceptual noise weighting filter (C(z)) is determined (507) based on the harmonic-noise weighting (HNW) coefficients (.epsilon.p).

公开(公告)号：DE602006012061D1

公开(公告)日：2010-03-18

申请号：DE602006012061

申请日：2006-06-29

Applicant: MOTOROLA INC

Inventor： ASHLEY JAMES P ,  MITTAL UDAR

IPC: G10L25/90

Abstract: In a speech encoder/decoder a pitch delay contour endpoint modifier is employed to shift the endpoints of a pitch delay interpolation curve up or down. Particularly, the endpoints of the pitch delay interpolation curve are shifted based on a variation and/or a standard deviation in pitch delay.

公开(公告)号：AU2003291397A1

公开(公告)日：2004-06-03

申请号：AU2003291397

申请日：2003-11-06

Applicant: MOTOROLA INC

Inventor： MITTAL UDAR ,  JASIUK MARK A ,  ASHLEY JAMES P

IPC: G10L19/08 ,  G10L19/04

Abstract: A speech coder that performs analysis-by-synthesis coding of a signal determines gain parameters for each constituent component of multiple constituent components of a synthetic excitation signal. The speech coder generates a target vector based on an input signal. The speech coder further generates multiple constituent components associated with the synthetic excitation signal, wherein one constituent component of the multiple constituent components is based on a shifted version of another constituent component of the multiple constituent components. The speech coder further evaluates an error criteria based on the target vector and the multiple constituent components to determine a gain associated with each constituent component of the multiple constituent components.

公开(公告)号：WO2007059437A3

公开(公告)日：2008-04-10

申请号：PCT/US2006060784

申请日：2006-11-10

Applicant: MOTOROLA INC ,  MITTAL UDAR ,  ASHLEY JAMES P

Inventor： MITTAL UDAR ,  ASHLEY JAMES P

IPC: H04L12/16

CPC classification number: G10L21/038

Abstract: A method and apparatus for improving listener differentiation of talkers during a conference call is provided herein. Particularly, during a teleconference a node (101) will extend the bandwidth of received signals (e.g., speech). Each caller within the conference call will then have their voice projected by the node (101) to a particular spot in three-dimensional space.

Abstract translation: 本文提供了一种用于在电话会议期间改善讲话者的听众区分的方法和装置。 特别地，在电话会议期间，节点（101）将扩展接收信号（例如语音）的带宽。 电话会议中的每个呼叫者然后将其节点（101）投射到三维空间中的特定点的声音。

公开(公告)号：WO2008033608A2

公开(公告)日：2008-03-20

申请号：PCT/US2007074222

申请日：2007-07-24

Applicant: MOTOROLA INC ,  MITTAL UDAR ,  ASHLEY JAMES P ,  CRUZ-ZENO EDGARDO M

Inventor： MITTAL UDAR ,  ASHLEY JAMES P ,  CRUZ-ZENO EDGARDO M

IPC: G10L21/00

CPC classification number: G06F17/17 ,  G10L19/0212 ,  G10L19/035 ,  H03M7/14

Abstract: The invention utilizes low complexity estimates of complex functions to perform combinatorial coding of signal vectors. The invention disregards the accuracy of such functions as long as certain sufficient properties are maintained. The invention in turn may reduce computational complexity of certain coding and decoding operations by two orders of magnitude or more for a given signal vector input.

Abstract translation: 本发明利用复杂函数的低复杂度估计来执行信号向量的组合编码。 本发明忽略了这些功能的准确性，只要保持某些足够的性能即可。 对于给定的信号向量输入，本发明可以将特定编码和解码操作的计算复杂度降低两个数量级或更多。

公开(公告)号：EP1697925A4

公开(公告)日：2009-07-08

申请号：EP04814785

申请日：2004-12-17

Applicant: MOTOROLA INC

Inventor： JASIUK MARK A ,  RAMABADRAN TENKASI V ,  MITTAL UDAR ,  ASHLEY JAMES P ,  MCLAUGHLIN MICHAEL J

IPC: G10L11/04 ,  G10L19/00 ,  G10L19/04 ,  G10L19/08 ,  G10L19/10 ,  G10L19/12

CPC classification number: G10L19/09

Abstract: A method (Fig. 9) and apparatus (500, 600) for prediction in a speech-coding system extends a 1st order long-term predictor (LTP) filter, using a sub-sample resolution delay, to a multi-tap LTP filter (504, 604). From another perspective, a conventional integer-sample resolution multi-tap LTP filter is extended to use sub-sample resolution delay. Such a multi-tap LTP filter offers a number of advantages over the prior-art. Particularly, defining the lag with sub-sample resolution makes it possible to explicitly model the delay values that have a fractional component, within the limits of resolution of the over-sampling factor used by the interpolation filter. The coefficients (ßi's) of the multi-tap LTP filter are thus largely freed from modeling the effect of delays that have a fractional component. Consequently their main function is to maximize the prediction gain of the LTP filter via modeling the degree of periodicity that is present and by imposing spectral shaping.

公开(公告)号：EP1922718A4

公开(公告)日：2008-09-03

申请号：EP06785795

申请日：2006-06-29

Applicant: MOTOROLA INC

Inventor： ASHLEY JAMES P ,  MITTAL UDAR

IPC: G10L19/08 ,  G10L11/04

CPC classification number: G10L19/09 ,  G10L21/00 ,  G10L21/06

Abstract: In a speech encoder/decoder (200/300) a pitch delay contour endpoint modifier (208) is employed to shift the endpoints of a pitch delay interpolation curve up or down. Particularly, the endpoints of the pitch delay interpolation curve are shifted based on a variation and/or a standard deviation in pitch delay.

Abstract translation: 在语音编码器/解码器（200/300）中，采用音调延迟轮廓端点修改器（208）来将音高延迟插值曲线的端点向上或向下移位。 特别地，音调延迟插值曲线的端点基于音调延迟的变化和/或标准偏差而被移位。

公开(公告)号：EP1563489A4

公开(公告)日：2007-06-13

申请号：EP03768792

申请日：2003-11-06

Applicant: MOTOROLA INC

Inventor： JASIUK MARK A ,  ASHLEY JAMES P ,  MITTAL UDAR

IPC: G10L19/08

CPC classification number: G10L19/083

Abstract: A speech coder (300) that performs analysis-by-synthesis coding of a signal determines gain parameters for each constituent component of multiple constituent components of a synthetic excitation signal (ex(n)). The speech coder generates a target vector (p(n)) based on an input signal (s(n)). The speech coder further generates multiple constituent components associated with the synthetic excitation signal, wherein one constituent component of the multiple constituent components is based on a shifted version of another constituent component of the multiple constituent components. The speech coder further evaluates an error criteria based on the target vector and the multiple constituent components to determine a gain associated with each constituent component of the multiple constituent components.

Abstract translation: 甲语音编码器那样进行分析边合成bestimmt用于合成激励信号的多个构成部件的各构成部件的参数的增益的信号的编码。 语音编码器基因利率在输入信号基于目标矢量。 语音编码器与合成激励信号相关联的进一步的基因速率的多个构成部件，worin所述多个构成部件中的一个构成成分是基于所述多个构成部件的另一组成部件的一个移位版本。 编码器进一步评估语音错误基于目标向量和标准的多个构成部件确定性矿与多个构成组件的每个组成部件相关联的增益。

公开(公告)号：BRPI0716773A2

公开(公告)日：2013-09-17

申请号：BRPI0716773

申请日：2007-07-24

Applicant: MOTOROLA INC

Inventor： MITTAL UDAR ,  CRUZ-ZENO EDGARDO M ,  ASHLEY JAMES P

IPC: G06F15/00