公开(公告)号：WO2007018815A2

公开(公告)日：2007-02-15

申请号：PCT/US2006/025273

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，使用音调延迟轮廓端点修改器（208）来向上或向下移动音调延迟内插曲线的端点。 特别地，音调延迟插值曲线的端点基于音调延迟的变化和/或标准偏差而移位。

公开(公告)号：WO2004044890A1

公开(公告)日：2004-05-27

申请号：PCT/US2003/035677

申请日：2003-11-06

Applicant: MOTOROLA, INC.

Inventor： MITTAL, Udar, ,  ASHLEY, James, P. ,  CRUZ, Edgardo, M.

IPC: G10L19/00

CPC classification number: G10L19/12 ,  G10L2019/0013

Abstract: A CELP encoder is provided that optimizes excitation vector-related parameters in a more efficient manner than the encoders of the prior art. In one embodiment, a CELP encoder (400) optimizes excitation vector-related parameters ( τ , β , κ , and γ ) based on a computed correlation matrix (Φ'), which matrix is in turn based on a filtered first excitation vector ( yτ ( n )). The encoder then evaluates error minimization criteria based on at least in part on a target signal ( xw ( n )), which target signal is based on an input signal ( s(n) ), and the correlation matrix and generates a excitation vector-related index in response to the error minimization criteria. In another embodiment, a CELP encoder (600) is provided that is capable of jointly optimizing and/or sequentially optimizing multiple excitation vector-related parameters by reference to a joint search weighting factor ( λ ), thereby invoking an optimal error minimization process.

Abstract translation: 提供了一种CELP编码器，其以比现有技术的编码器更有效的方式优化激励矢量相关参数。 在一个实施例中，CELP编码器（400）基于所计算的相关矩阵（PHI'）来优化激励矢量相关参数（tau，β，κ和γ），所述相关矩阵依次基于滤波的第一激励矢量 y tau（n））。 然后，编码器至少部分地基于目标信号（xw（n）），基于输入信号（s（n））和相关矩阵来产生误差最小化准则，并产生激励矢量 - 相关索引响应错误最小化标准。 在另一个实施例中，提供了一种CELP编码器（600），其能够通过参考联合搜索加权因子（lambda）联合优化和/或顺序优化多个与激励矢量相关的参数，由此调用最佳误差最小化处理。 >

公开(公告)号：WO2010059342A1

公开(公告)日：2010-05-27

申请号：PCT/US2009/062008

申请日：2009-10-26

Applicant: MOTOROLA, INC. ,  GIBBS, Jonathan, A. ,  ASHLEY, James, P. ,  FRANCOIS, Holly, L. ,  MITTAL, Udar

Inventor： GIBBS, Jonathan, A. ,  ASHLEY, James, P. ,  FRANCOIS, Holly, L. ,  MITTAL, Udar

IPC: G10L19/14

CPC classification number: G10L19/167

Abstract: Apparatus for encoding at least one parameter associated with a signal source for transmission over k frames to a decoder comprises a processor which is configured in operation to assign a predetermined bit pattern to n bits associated with the at least one parameter of a first frame of k frames and set the n bits associated with the at least one parameter of each of k-1 subsequent frames to values, such that the values of the n bits of the k-1 subsequent frames represent the at least one parameter. The predetermined bit pattern indicates a start of the at least one parameter.

Abstract translation: 用于编码与信号源相关联的至少一个参数以用于在k个帧上传输到解码器的装置包括处理器，其被配置用于将预定位模式分配给与k的第一帧的至少一个参数相关联的n位 并且将与k-1个后续帧中的每一个的至少一个参数相关联的n位设置为值，使得k-1个后续帧的n位的值表示至少一个参数。 预定位模式指示至少一个参数的开始。

公开(公告)号：WO2009126759A1

公开(公告)日：2009-10-15

申请号：PCT/US2009/039984

申请日：2009-04-09

Applicant: MOTOROLA, INC. ,  ASHLEY, James, P. ,  GIBBS, Jonathan, A. ,  MITTAL, Udar

Inventor： ASHLEY, James, P. ,  GIBBS, Jonathan, A. ,  MITTAL, Udar

IPC: G10L19/04

CPC classification number: G10L19/24 ,  G10L19/22

Abstract: In a selective signal encoder, an input signal is first encoded (1004) using a core layer encoder to produce a core layer encoded signal. The core layer encoded signal is decoded (1006) to produce a reconstructed signal and an error signal is generated (1008) as the difference between the reconstructed signal and the input signal. The reconstructed signal is compared (1010) to the input signal. One of two or more enhancement layer encoders selected (1014, 1016) dependent upon the comparison and used to encode the error signal. The core layer encoded signal, the enhancement layer encoded signal and the selection indicator are output (1018) to the channel (for transmission or storage, for example).

Abstract translation: 在选择信号编码器中，首先使用核心层编码器对输入信号进行编码（1004）以产生核心层编码信号。 核心层编码信号被解码（1006）以产生重构信号，并且产生（1008）误差信号作为重构信号和输入信号之间的差。 将重建信号与输入信号进行比较（1010）。 所选择的两个或更多个增强层编码器中的一个（1014,1016）取决于比较并用于对误差信号进行编码。 将核心层编码信号，增强层编码信号和选择指示符输出（1018）到信道（例如用于传输或存储）。

公开(公告)号：WO2007018882A3

公开(公告)日：2007-02-15

申请号：PCT/US2006/026617

申请日：2006-07-07

Applicant: MOTOROLA, INC. ,  MIRANDA-KNAPP, Carlos, A. ,  ASHLEY, James, P.

Inventor： MIRANDA-KNAPP, Carlos, A. ,  ASHLEY, James, P.

IPC: G10L21/00

Abstract: A communication device (10) can include a transceiver (12), a transducer or microphone (14) coupled to the transceiver for receiving voice input from a user, and a processor (16) coupled to the transceiver. The processor can be programmed to receive (32) a predetermined type of phone call or an indication of a caller indication from a calling party and warp (38) a voice input from the user of the communication device based on the caller indication. How the predetermined type of phone call is determined can be done in a number of ways including using an optional caller identification module (18). The caller ID module can provide information on whether the caller is recognized or whether the caller ID information is unavailable.

公开(公告)号：EP1112625B1

公开(公告)日：2006-05-31

申请号：EP99943854.2

申请日：1999-08-24

Applicant: MOTOROLA, INC.

Inventor： ASHLEY, James, P. ,  PENG, Weimin

IPC: H04B7/216 ,  G10L19/10

CPC classification number: G10L19/12 ,  H03M7/30

Abstract: To achieve high quality speech reconstruction at low bit rates, constraints on position combinations among two or more pulses (403) are implemented. By placing constraints on position combinations, certain combinations of pulses are prohibited which allows the most significant pulses to always be coded, thereby improving speech quality. After all valid combinations are considered, a list of pulse pairs (codebook) which can be indexed using a single, predetermined bit length codeword is produced. The codeword is transmitted to a destination where it is used by a decoder to reconstruct the original information signal.

公开(公告)号：EP0974206B1

公开(公告)日：2004-05-06

申请号：EP98906535.4

申请日：1998-02-18

Applicant: MOTOROLA, INC.

Inventor： DECLERK, Daniel, J. ,  ASHLEY, James, P.

IPC: H04B7/216 ,  H04Q7/38

CPC classification number: H04W36/0094

Abstract: A mobile station (106) in a code division multiple access (CDMA) communication system (100) implements scanning of pilot channels on a different frequency by reserving a periodic frame on the forward channel to allow the mobile station (106) to change frequencies and scan for other pilot channels. To preserve some aspects of voice quality, both the base station (102) and mobile station (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：WO2010077557A1

公开(公告)日：2010-07-08

申请号：PCT/US2009/066627

申请日：2009-12-03

Applicant: MOTOROLA, INC. ,  ASHLEY, James, P. ,  MITTAL, Udar

Inventor： ASHLEY, James, P. ,  MITTAL, Udar

IPC: G10L19/14

CPC classification number: G10L19/24

Abstract: A set of peaks in a reconstructed audio vector Ŝ of a received audio signal is detected and a scaling mask Ψ (Ŝ) based on the detected set of peaks is generated. A gain vector g* is generated based on at least the scaling mask and an index j representative of the gain vector. The reconstructed audio signal is scaled with the gain vector to produce a scaled reconstructed audio signal. A distortion is generated based on the audio signal and the scaled reconstructed audio signal. The index of the gain vector based on the generated distortion is output.

Abstract translation: 检测接收到的音频信号的重构音频向量S中的一组峰值，并且生成基于检测到的峰值集合的缩放掩模λ（S）。 基于至少缩放掩码和表示增益矢量的索引j生成增益向量g *。 重建音频信号用增益矢量进行缩放以产生缩放的重构音频信号。 基于音频信号和缩放的重构音频信号产生失真。 输出基于生成的失真的增益矢量的索引。

公开(公告)号：WO1997018647A1

公开(公告)日：1997-05-22

申请号：PCT/US1996014270

申请日：1996-09-04

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  ASHLEY, James, P.

IPC: H04B15/00

CPC classification number: G10L21/0208

Abstract: A noise suppression system (109) implemented in communication system (700) provides an improved update decision during instances of sudden increase in background noise level. The noise suppression system (109), 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 (109) also inhibits a forced update during periods of continuous, non-stationary input signals (such as "music-on-hold").

Abstract translation: 在通信系统（700）中实现的噪声抑制系统（109）在背景噪声水平突然增加的情况下提供改进的更新决定。 噪声抑制系统（109）尤其通过连续地监视频谱能量的偏差并基于预定的阈值准则来迫使更新来产生更新。 通过利用具有指数加权的功率谱分量的过去值的元素来确定光谱能量偏差。 指数加权是当前输入能量的函数，这意味着输入信号能量越高，指数窗口越长。 相反，信号能量越低，指数窗口越短。 噪声抑制系统（109）还在连续的，不稳定的输入信号（诸如“保持音乐”）期间抑制强制更新。

公开(公告)号：EP1913590A2

公开(公告)日：2008-04-23

申请号：EP06786686.3

申请日：2006-07-07

Applicant: Motorola, Inc.

Inventor： MIRANDA-KNAPP, Carlos, A. ,  ASHLEY, James, P.

IPC: G10L21/00

CPC classification number: H04M1/573 ,  G10L21/00 ,  G10L2021/0135 ,  H04M1/6008 ,  H04M1/72544 ,  H04M15/06

Abstract: A communication device (10) can include a transceiver (12), a transducer or microphone (14) coupled to the transceiver for receiving voice input from a user, and a processor (16) coupled to the transceiver. The processor can be programmed to receive (32) a predetermined type of phone call or an indication of a caller indication from a calling party and warp (38) a voice input from the user of the communication device based on the caller indication. How the predetermined type of phone call is determined can be done in a number of ways including using an optional caller identification module (18). The caller ID module can provide information on whether the caller is recognized or whether the caller ID information is unavailable.