公开(公告)号：WO1996018185A1

公开(公告)日：1996-06-13

申请号：PCT/US1995011916

申请日：1995-09-19

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  BERGSTROM, Chad, Scott ,  FETTE, Bruce, Alan ,  JASKIE, Cynthia, Ann ,  WOOD, Clifford ,  YOU, Sean, Sungsoo

IPC: G10L03/02

CPC classification number: G10L19/125 ,  G10L19/02 ,  G10L19/10 ,  G10L2019/0011

Abstract: A vocoder device and corresponding method characterizes and reconstructs speech excitation. An excitation analysis portion preforms a cyclic excitation transformation (52) process on a target excitation segment by rotating a peak amplitude to a beginning buffer location. The excitation phase representation is dealiased (54) using multiple dealiasing passes based on the phase slope variance. Both primary and secondary excitation components are characterized (56), where the secondary excitation is characterized based on a computation of the error (178) between the characterized primary excitation and the original excitation. Alternatively, an excitation pulse compression filter (50) is applied to the target, resulting in a symmetric target. The symmetric target is characterized (58) by normalizing half the symmetric target. The synthesis portion performs reconstruction (216, 218) and synthesis (220) of the characterized excitation based on the characterization method employed by the analysis portion.

Abstract translation: 声码器装置和相应的方法表征和重建语音激励。 励磁分析部分通过将峰值振幅旋转到起始缓冲器位置来对目标激励段进行循环激励变换（52）处理。 激励相位表示是基于相位斜率方差，使用多个去混合通路去除（54）。 特征在于主激励分量和次励磁分量（56），其中基于特征的初级激励和原始激励之间的误差计算（178）来表征二次激励。 或者，将激发脉冲压缩滤波器（50）施加到目标，产生对称的目标。 通过对称目标的一半归一化来表征对称目标（58）。 合成部分基于分析部分使用的表征方法进行表征激励的重建（216,218）和合成（220）。

公开(公告)号：WO1996018187A1

公开(公告)日：1996-06-13

申请号：PCT/US1995012174

申请日：1995-09-25

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  BERGSTROM, Chad, Scott ,  FETTE, Bruce, ALan ,  JASKIE, Cynthia, Ann ,  WOOD, Clifford ,  YOU, Sean, Sungsoo

IPC: G10L09/14

CPC classification number: G10L19/10 ,  G10L2019/0002 ,  G10L2019/0012

Abstract: A speech vocoder device and corresponding method parameterizes speech excitation waveforms. An analysis portion performs an excitation pulse compression process (46) which filters (64, 66, 68) an excitation template to produce compressed excitation from which excitation parameters are estimated (74). An optimal excitation target is selected using a closed-loop process (48) that selects the target based on a minimum error (158) between the original waveform and waveforms created by interpolating (156) between candidate targets. An adaptive excitation weighting function is created (178) based on the excitation target's features and a preselected characterization methodology, and the function is applied (180) to the excitation target. The excitation is characterized (52) and encoded (54) for digital transmission.

Abstract translation: 语音声码器装置及对应方法参数化语音激励波形。 分析部分执行激励脉冲压缩处理（46），其过滤（64,66,68）激励模板以产生从其估计激励参数的压缩激励（74）。 使用闭环过程（48）来选择最佳激励目标，所述闭环过程基于通过在候选目标之间内插（156）而创建的原始波形和波形之间的最小误差（158）来选择目标。 基于激发目标的特征和预选的表征方法，创建自适应激励加权函数（178），并且将该函数应用于激励目标（180）。 激励被表征（52）和编码（54）用于数字传输。

公开(公告)号：WO1996018186A1

公开(公告)日：1996-06-13

申请号：PCT/US1995011946

申请日：1995-09-19

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  BERGSTROM, Chad, Scott ,  FETTE, Bruce, Alan ,  JASKIE, Cynthia, Ann ,  WOOD, Clifford ,  YOU, Sean, Sungsoo

IPC: G10L05/02

CPC classification number: G10L19/125 ,  G10L25/06 ,  G10L2019/0012

Abstract: A speech vocoder device and corresponding method synthesizes speech excitation waveforms. The method entails reconstructing (216) an excitation target from decoded speech data, creating (220) aligned excitation segments by normalizing (296), correlating (298), and aligning (300) a source segment and a target segment, reconstructing normalized intervening segments by ensemble interpolating (318) between the source segment and the target segment, denormalizing (320) the normalized intervening segments, and reconstructing (322) an excitation waveform from the denormalized intervening segments, the source segment, and the target segment.

Abstract translation: 语音声码器装置和相应的方法合成语音激励波形。 该方法需要从解码的语音数据重建（216）激励目标，通过归一化（296），相关（298）和对准（300）源段和目标段来创建（220）对准的激励段，重建标准化的间隔段 通过在源段和目标段之间进行整体内插（318），对标准化的间隔段进行非归一化（320），并且从非归一化的中间段，源段和目标段重建（322）激发波形。