公开(公告)号：JP2010217912A

公开(公告)日：2010-09-30

申请号：JP2010112494

申请日：2010-05-14

Applicant: Motorola Inc ,  モトローラ・インコーポレイテッドMotorola Incorporated

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

IPC: G10L19/08 ,  G10L19/14 ,  H03M7/30

CPC classification number: G10L19/09

Abstract: PROBLEM TO BE SOLVED: To provide a method and apparatus for performing speech coding which improves speech quality. SOLUTION: The method for encoding speech by a speech coding device comprises: a stage for receiving an input signal; a stage for creating an object vector on the basis of the input signal; a stage for creating a plurality of weighted adaptive code book vectors on the basis of a signal sub-sample resolution delay value, an adaptive code book, and a weighted synthesis filter; a stage for creating a weighted fixed code book(FCB) exiting vector on the basis of the object vector and the plurality of weighted adaptive code book vector; a stage for creating a plurality of correlation terms on the basis of the object vector, the plurality of weighted adaptive code book vectors and the weighted FCB exciting vector; and a stage for selecting a gain vector from a table in response to an error minimizing reference. The gain vector comprises at least two adaptive code book gains and one fixed code book gain, and the error minimizing reference is based on the plurality of correlation terms. COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：提供一种提高语音质量的用于执行语音编码的方法和装置。 解决方案：由语音编码装置编码语音的方法包括：用于接收输入信号的级; 基于输入信号创建对象向量的阶段; 基于信号子采样分辨率延迟值，自适应码本和加权合成滤波器创建多个加权自适应码本矢量的阶段; 基于所述对象矢量和所述多个加权自适应编码矢量生成退出向量的加权固定码本（FCB）的阶段; 基于对象矢量，多个加权自适应码本矢量和加权FCB激励矢量创建多个相关项的阶段; 以及用于响应于误差最小化参考从表中选择增益矢量的阶段。 增益矢量包括至少两个自适应码本增益和一个固定码本增益，并且误差最小化参考是基于多个相关项。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2007065636A

公开(公告)日：2007-03-15

申请号：JP2006208368

申请日：2006-07-31

Applicant: Motorola Inc ,  モトローラ・インコーポレイテッドMotorola Incorporated

Inventor： CRUZ-ZENO EDGARDO M ,  ASHLEY JAMES P

IPC: G10L19/00 ,  H04Q7/38

CPC classification number: G10L19/012 ,  G10L19/005

Abstract: PROBLEM TO BE SOLVED: To generate comfort noise in speech communication systems in order to attain higher quality while reducing network bandwidth utilization. SOLUTION: A method that may be used in variety of electronic devices for generating the comfort noise includes; receiving a plurality of information frames indicative of speech plus background noise (705); estimating one or more background noise characteristics based on the plurality of information frames (710); and generating a comfort noise signal based on the one or more background noise characteristics (715). The method may further includes; generating a speech signal from the plurality of information frames (720); and generating an output signal by switching between the comfort noise signal and the speech signal based on a voice activity detection (725). COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：为了在语音通信系统中产生舒适噪声，以便在降低网络带宽利用的同时获得更高的质量。 解决方案：可用于产生舒适噪声的各种电子设备中的方法包括： 接收指示语音加背景噪声的多个信息帧（705）; 基于所述多个信息帧估计一个或多个背景噪声特性（710）; 以及基于所述一个或多个背景噪声特性（715）产生舒适噪声信号。 该方法还可以包括： 从所述多个信息帧生成语音信号（720）; 以及通过基于语音活动检测在所述舒适噪声信号和所述语音信号之间切换来产生输出信号（725）。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：WO2007018815A3

公开(公告)日：2007-10-04

申请号：PCT/US2006025273

申请日：2006-06-29

Applicant: MOTOROLA INC ,  ASHLEY JAMES P ,  MITTAL UDAR

Inventor： ASHLEY JAMES P ,  MITTAL UDAR

IPC: 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：WO2009048735A3

公开(公告)日：2009-07-16

申请号：PCT/US2008077321

申请日：2008-09-23

Applicant: MOTOROLA INC ,  MITTAL UDAR ,  ASHLEY JAMES P

Inventor： MITTAL UDAR ,  ASHLEY JAMES P

IPC: H03M7/30

CPC classification number: H03M7/30 ,  G06F7/49942 ,  G10L19/035 ,  G10L19/20 ,  H03M7/3082

Abstract: During operation of an encoder, a signal vector (x) is received. A first multi-precision operand (?'k ) will be generated based on the signal vector to be encoded. A mantissa operand and an exponent operand are generated. Both the mantissa operand and the exponent operand are representative of a second multi-precision operand that is based on the signal vector to be encoded. A portion of ?'k is selected to be modified based on the exponent operand. A part of ?'k is modified based on the mantissa operand to produce a modified multi-precision operand (?'k+1 ). Finally, a multi-precision codeword is generated for use in a corresponding decoder.

Abstract translation: 在编码器的操作期间，接收到信号矢量（x）。 基于待编码的信号矢量将生成第一多精度操作数（？'k）。 产生一个尾数操作数和一个指数操作数。 尾数操作数和指数操作数均代表基于待编码的信号向量的第二多精度操作数。 选择'k'的一部分以基于指数操作数进行修改。 根据尾数操作数修改'k'的一部分，以产生修改后的多精度操作数（？'k + 1）。 最后，生成一个多精度码字用于相应的解码器。

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：MX2010004479A

公开(公告)日：2010-05-03

申请号：MX2010004479

申请日：2008-09-25

Applicant: MOTOROLA INC

Inventor： MITTAL UDAR ,  ASHLEY JAMES P ,  GIBBS JONATHAN A

IPC: G10L19/14

Abstract: Durante la operación, una señal de entrada que va a ser codificada es recibida y codificada para producir una señal de audio codificada; la señal de audio codificada entonces es escalada con una pluralidad de valores de ganancia para producir una pluralidad de señales de audio codificadas escaladas, cada una tiene un valor de ganancia asociado y se determina que una pluralidad de valores de error existe entre la señal de entrada y cada una de la pluralidad de señales de audio codificadas escaladas; entonces se elige un valor de ganancia el cual está asociado con una señal de audio codificada escalada que tiene como resultado un valor de error bajo existente entre la señal de entrada y la señal de audio codificada escalada; por último, el valor de error bajo es transmitido junto con el valor de ganancia como parte de una capa de mejoramiento a la señal de audio codificada.

公开(公告)号：FR2741217B1

公开(公告)日：2004-08-20

申请号：FR9612357

申请日：1996-10-10

Applicant: MOTOROLA INC

Inventor： ASHLEY JAMES P

IPC: H04B1/10 ,  G10L21/02 ,  H04B15/00 ,  H04Q7/20 ,  H04Q7/06

Abstract: A noise suppression system implemented in communication system provides an improved update decision during instances of sudden increase in background noise level. The noise suppression system, inter alia, generates an update by continually monitoring the deviation of spectral energy and forcing an update based on a predetermined threshold criterion. The spectral energy deviation is determined by utilizing an element which has the past values of the power spectral components exponentially weighted. The exponential weighting is a function of the current input energy, which means the higher the input signal energy the longer the exponential window. Conversely, the lower the signal energy the shorter the exponential window. The noise suppression system also inhibits a forced update during periods of continuous, non-stationary input signals (such as "music-on-hold").

公开(公告)号：SE521679C2

公开(公告)日：2003-11-25

申请号：SE9701659

申请日：1997-05-02

Applicant: MOTOROLA INC

Inventor： ASHLEY JAMES P

IPC: G10L21/02 ,  H04B1/10 ,  H04B15/00 ,  H04Q7/20

Abstract: A noise suppression system implemented in communication system provides an improved update decision during instances of sudden increase in background noise level. The noise suppression system, inter alia, generates an update by continually monitoring the deviation of spectral energy and forcing an update based on a predetermined threshold criterion. The spectral energy deviation is determined by utilizing an element which has the past values of the power spectral components exponentially weighted. The exponential weighting is a function of the current input energy, which means the higher the input signal energy the longer the exponential window. Conversely, the lower the signal energy the shorter the exponential window. The noise suppression system also inhibits a forced update during periods of continuous, non-stationary input signals (such as "music-on-hold").

公开(公告)号：CA2286179C

公开(公告)日：2002-05-07

申请号：CA2286179

申请日：1998-02-18

Applicant: MOTOROLA INC

Inventor： ASHLEY JAMES P ,  DECLERCK DANIEL J

IPC: H04W28/06 ,  H04W36/08 ,  H04B7/216 ,  H04Q7/00

Abstract: A mobile station (106) in a code division multiple access (CDMA) communicati on system (100) implements scanning of pilot channels on a different frequency by reserving a periodic frame on the forward channel to allow the mobile statio n (106) to change frequencies and scan for other pilot channels. To preserve some aspects of voice quality, both the base station (102) and mobile statio n (106) voice encode speech at a maximum of half rate and transmit the information as secondary traffic prior to the frame where the mobile station (106) scans the alternate frequency. To maximize the trade-off between voice quality and frequency of the scan, the base station (102) indicates to the mobile station (106) the period between other frequency scans via messaging. To ensure compatibility, this method can be negotiated via known service configuration negotiation techniques.

公开(公告)号：HU219255B

公开(公告)日：2001-03-28

申请号：HU9800843

申请日：1996-09-04

Applicant: MOTOROLA INC

Inventor： ASHLEY JAMES P

IPC: G10L21/02 ,  H04B1/10 ,  H04B15/00 ,  H04Q7/20

Abstract: A noise suppression system implemented in communication system provides an improved update decision during instances of sudden increase in background noise level. The noise suppression system, inter alia, generates an update by continually monitoring the deviation of spectral energy and forcing an update based on a predetermined threshold criterion. The spectral energy deviation is determined by utilizing an element which has the past values of the power spectral components exponentially weighted. The exponential weighting is a function of the current input energy, which means the higher the input signal energy the longer the exponential window. Conversely, the lower the signal energy the shorter the exponential window. The noise suppression system also inhibits a forced update during periods of continuous, non-stationary input signals (such as "music-on-hold").