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1. 发明授权

US5794186A Method and apparatus for encoding speech excitation waveforms through analysis of derivative discontinues 失效
标题翻译：通过分析导数中断对语音激励波形进行编码的方法和装置
公开(公告)号：US5794186A
公开(公告)日：1998-08-11
申请号：US713620
申请日：1996-09-13
申请人： Chad Scott Bergstrom , Bruce Alan Fette , Cynthia Ann Jaskie , Clifford Wood , Sean Sungsoo You
发明人： Chad Scott Bergstrom , Bruce Alan Fette , Cynthia Ann Jaskie , Clifford Wood , Sean Sungsoo You
IPC分类号： G10L19/00 , G10L19/02 , G10L19/10 , G10L19/12 , G10L9/00 , G10L3/02
CPC分类号： G10L19/125 , G10L19/10 , G10L19/02
摘要： A vocoder device and corresponding method characterizes and reconstructs speech excitation. An excitation analysis portion performs a cyclic excitation transformation process on a target excitation segment by rotating a peak amplitude to a beginning buffer location. The excitation phase representation is dealiased using multiple dealiasing passes based on the phase slope variance. Both primary and secondary excitation components are characterized, where the secondary excitation is characterized based on a computation of the error between the characterized primary excitation and the original excitation. Alternatively, an excitation pulse compression filter is applied to the target, resulting in a symmetric target. The symmetric target is characterized by normalizing half the symmetric target. The synthesis portion performs reconstruction and synthesis of the characterized excitation based on the characterization method employed by the analysis portion.
摘要翻译：声码器装置和相应的方法表征和重构语音激励。激励分析部通过将峰值振幅旋转到起始缓冲器位置，对目标激励段进行循环激励变换处理。基于相位斜率方差，使用多个去饱和通道来激励相位表示是去混合的。特征在于主激励分量和次励磁分量，其中基于所表征的主激励和原始激励之间的误差的计算来表征二次激励。或者，激励脉冲压缩滤波器被施加到目标，导致对称的目标。对称目标的特征在于将对称目标的一半归一化。合成部分基于分析部分采用的表征方法进行表征激励的重构和合成。

2. 发明授权

US5727125A Method and apparatus for synthesis of speech excitation waveforms 失效
标题翻译：用于合成语音激励波形的方法和装置
公开(公告)号：US5727125A
公开(公告)日：1998-03-10
申请号：US349639
申请日：1994-12-05
申请人： Chad Scott Bergstrom , Bruce Alan Fette , Cynthia Ann Jaskie , Clifford Wood , Sean Sungsoo You
发明人： Chad Scott Bergstrom , Bruce Alan Fette , Cynthia Ann Jaskie , Clifford Wood , Sean Sungsoo You
IPC分类号： G10L19/00 , G10L19/12 , G10L5/02
CPC分类号： G10L19/125 , G10L25/06
摘要： 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.
摘要翻译：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插值（318），对归一化的间隔段进行非归一化（320），并且从非归一化的中间段，源段和目标段重构（322）激励波形。

3. 发明授权

US07433434B2 Communication channel tracking apparatus 有权
标题翻译：通信信道跟踪装置
公开(公告)号：US07433434B2
公开(公告)日：2008-10-07
申请号：US10956658
申请日：2004-10-01
申请人： Carl Steven Gifford , John Eric Kleider , Chad Scott Bergstrom , Jeffery Scott Chuprun , Bruce Alan Fette
发明人： Carl Steven Gifford , John Eric Kleider , Chad Scott Bergstrom , Jeffery Scott Chuprun , Bruce Alan Fette
IPC分类号： H04B1/10
CPC分类号： H04L25/0212 , H04L5/0023 , H04L25/0222 , H04L25/0226 , H04L25/0236 , H04L25/0238 , H04L25/025 , H04L2025/037
摘要： Apparatus are provided for a communication signal processing apparatus having a channel estimator configured to generate a first channel estimation at a first time point, a linear predictor coupled to the channel estimator, and an adaptive filter coupled with the linear predictor. The linear predictor is configured to predict a second channel estimation based on a second time point and a channel frequency. The second time point is concurrent or subsequent to the first time point. The second channel estimation includes a first coefficient. The linear predictor includes a first predictor having a sample time point. The first predictor is configured to generate the first coefficient of the second channel estimation based on the sample time point and the second time point. The sample time point is prior to the second time point. The adaptive filter is configured to recursively determine the second channel estimation.
摘要翻译：提供了一种用于具有信道估计器的通信信号处理装置的装置，其被配置为在第一时间点产生第一信道估计，耦合到信道估计器的线性预测器和与线性预测器耦合的自适应滤波器。线性预测器被配置为基于第二时间点和信道频率来预测第二信道估计。第二个时间点是第一个时间点的同时或之后。第二信道估计包括第一系数。线性预测器包括具有采样时间点的第一预测器。第一预测器被配置为基于采样时间点和第二时间点产生第二信道估计的第一系数。采样时间点在第二个时间点之前。自适应滤波器被配置为递归地确定第二信道估计。

4. 发明授权

US07356075B2 Method and apparatus for signal separation 有权
标题翻译：信号分离方法和装置
公开(公告)号：US07356075B2
公开(公告)日：2008-04-08
申请号：US10853376
申请日：2004-05-24
申请人： Chad Scott Bergstrom , Ghassan Chehade Maalouli , Jeffery Scott Chuprun
发明人： Chad Scott Bergstrom , Ghassan Chehade Maalouli , Jeffery Scott Chuprun
IPC分类号： H04B1/00
CPC分类号： H04B1/7075 , H04B1/71 , H04B2201/70715
摘要： An embodiment of a method for parameterizing an input signal includes non-linearly transforming the input signal, removing higher order terms by passing the input signal through a low pass filter to produce a linear combination of data symbols and DC components, solving for the DC components, separating a plurality of mixed baseband signals from the input signal, and coordinate transforming each of the separated signals from polar coordinates to Cartesian coordinates. An embodiment of a receiver includes a non-linear transform operator receiving a digitized input signal and adapted to produce a linear combination of data symbols, DC components, and carrier effects; a low-pass filter for removing higher order terms; a separator unit for separating the plurality of mixed baseband signals; and a coordinate transform for converting the separated signals from polar coordinates to Cartesian coordinates.
摘要翻译：用于参数化输入信号的方法的实施例包括非线性变换输入信号，通过使输入信号通过低通滤波器来消除高阶项，以产生数据符号和DC分量的线性组合，求解DC分量从输入信号中分离出多个混合基带信号，并将每个分离的信号从极坐标变换到笛卡尔坐标。接收机的实施例包括接收数字化输入信号并适于产生数据符号，DC分量和载波效应的线性组合的非线性变换算子; 用于去除高阶项的低通滤波器; 用于分离所述多个混合基带信号的分离器单元; 以及用于将从极坐标分离的信号转换为笛卡尔坐标的坐标变换。

5. 发明授权

US06240282B1 Apparatus for performing non-linear signal classification in a communications system 失效
标题翻译：用于在通信系统中执行非线性信号分类的装置
公开(公告)号：US06240282B1
公开(公告)日：2001-05-29
申请号：US09114321
申请日：1998-07-13
申请人： John Eric Kleider , Chad Scott Bergstrom
发明人： John Eric Kleider , Chad Scott Bergstrom
IPC分类号： H04B1700
CPC分类号： H04L27/0012 , H04B17/20
摘要： A non-linear signal classifier (26) includes a polynomial expansion unit for expanding signal feature vectors determined by a feature extraction unit (25) for a received signal. The expanded signal feature vectors are each combined with a plurality of signal classification models that are stored in a model memory (76). The signal classification models are each associated with a particular signal type that is recognized by the non-linear signal classifier. A scoring unit (72) generates a score for each of the signal classification models based on the result of the combination. The scores are analyzed by a selection unit (74) which determines which of the signal classification models (i.e., which of the signal types) most likely represents the received signal. Training equipment (60) is also provided for training the non-linear signal classifier (26) to recognize new signal types. In one embodiment, the training equipment (60) is capable of adding a new signal classification model to the model memory (76) without modifying other models stored therein.
摘要翻译：非线性信号分类器（26）包括用于扩展由特征提取单元（25）为接收信号确定的信号特征向量的多项式展开单元。扩展的信号特征向量与存储在模型存储器（76）中的多个信号分类模型组合。信号分类模型各自与由非线性信号分类器识别的特定信号类型相关联。评分单元（72）基于组合的结果生成每个信号分类模型的得分。分数由选择单元（74）进行分析，确定信号分类模型中哪一个（即信号类型中的哪一个）最可能代表接收到的信号。培训设备（60）还用于训练非线性信号分类器（26）以识别新的信号类型。在一个实施例中，训练设备（60）能够将新的信号分类模型添加到模型存储器（76），而不修改其中存储的其他模型。

6. 发明授权

US6131013A Method and apparatus for performing targeted interference suppression 失效
标题翻译：用于执行目标干扰抑制的方法和装置
公开(公告)号：US6131013A
公开(公告)日：2000-10-10
申请号：US016030
申请日：1998-01-30
申请人： Chad Scott Bergstrom , Jeffrey Scott Chuprun , John Eric Kleider
发明人： Chad Scott Bergstrom , Jeffrey Scott Chuprun , John Eric Kleider
IPC分类号： H04B1/12 , H04L1/00 , H04L1/20 , H04L27/00 , H04Q7/20
CPC分类号： H04B1/123 , H04L1/0001 , H04L1/20 , H04L27/0012 , H04L1/0026
摘要： The invention relates to a communication system (300) having a receiver (304) that is capable of performing targeted interference suppression. An interference classifier (314) within the receiver (304) analyzes a signal received from a channel (306) and identifies and classifies interference components within the signal. An interference suppressor (316) then suppresses the interference components in the signal based on interference type. In one embodiment, the interference suppressor (316) includes a plurality of interference suppression modules that are each optimal for suppressing certain interference types. The interference suppressor (316) selects one of the interference suppression modules based on the type of interference present in the received signal. In another embodiment, a hybrid interference mitigation system (10) is provided by combining targeted interference suppression, frequency hopping adaptation, and processing gain adaptation.
摘要翻译：本发明涉及具有能够执行目标干扰抑制的接收机（304）的通信系统（300）。接收器（304）内的干扰分类器（314）分析从信道（306）接收的信号，并识别和分类信号内的干扰分量。干扰抑制器（316）然后基于干扰类型抑制信号中的干扰分量。在一个实施例中，干扰抑制器（316）包括多个干扰抑制模块，每个干扰抑制模块最适合于抑制某些干扰类型。干扰抑制器（316）基于接收信号中存在的干扰类型来选择一个干扰抑制模块。在另一个实施例中，通过组合目标干扰抑制，跳频自适应和处理增益适配来提供混合干扰减轻系统（10）。

7. 发明授权

US5809459A Method and apparatus for speech excitation waveform coding using multiple error waveforms 失效
标题翻译：用于使用多个误差波形的语音激励波形编码的方法和装置
公开(公告)号：US5809459A
公开(公告)日：1998-09-15
申请号：US651172
申请日：1996-05-21
申请人： Chad Scott Bergstrom , Carl Steven Gifford , Richard James Pattison , Glen Patrick Abousleman
发明人： Chad Scott Bergstrom , Carl Steven Gifford , Richard James Pattison , Glen Patrick Abousleman
IPC分类号： G10L19/12 , G10L9/00 , G10L9/14
CPC分类号： G10L19/125 , G10L19/24
摘要： A method and apparatus (100) for pitch-epoch-synchronous source-filter speech encoding by means of error component modeling methods (310) which capture fundamental orthogonal (uncorrelated) basis elements of an excitation source waveform. A periodic waveform model (318) along with four orthogonal error waveforms, desirably including phase error (319), ensemble error (321), standard deviation error (323), and mean error (324) waveforms, are incorporated together to form a complete description of the excitation. These error waveforms (319,321, 323, 324) represent those portions of the excitation that are not represented by the purely periodic model. By thus orthogonalizing the error components, the perceptual effect of each element is isolated from the composite set, and can thus be encoded separately. In addition to high-quality, fixed-rate operation, the identity-system capability and low complexity of the speech encoding method and apparatus make them applicable to variable-rate applications without changing underlying modeling methods.
摘要翻译：一种利用捕获激励源波形的基本正交（不相关）基元的误差分量建模方法（310）来进行音调同步源滤波语音编码的方法和装置（100）。周期性波形模型（318）连同四个正交误差波形，包括相位误差（319），综合误差（321），标准偏差误差（323）和平均误差（324）波形，并入一起形成一个完整的激励的描述。这些误差波形（319,321,323,324）表示不由纯周期模型表示的激发部分。通过这样正交化误差分量，每个元素的感知效果从复合集合中分离出来，因此可以分开编码。除了高质量，固定速率的操作之外，语音编码方法和设备的身份识别系统能力和低复杂度使得它们适用于可变速率应用而不改变基础建模方法。

8. 发明授权

US5794185A Method and apparatus for speech coding using ensemble statistics 失效
标题翻译：使用集合统计语音编码的方法和装置
公开(公告)号：US5794185A
公开(公告)日：1998-08-11
申请号：US665178
申请日：1996-06-14
申请人： Chad Scott Bergstrom , Richard James Pattison , Carl Steven Gifford
发明人： Chad Scott Bergstrom , Richard James Pattison , Carl Steven Gifford
IPC分类号： G10L19/06 , G10L19/08 , G10L5/00
CPC分类号： G10L19/08 , G10L19/06 , G10L25/30
摘要： A speech coder (100) computes scalar statistics (180), ensemble statistics (190), spectral parameters (150), and a normalized excitation waveform (270) which describe a frame of speech samples. The coder (100) encodes the statistics (220, 230), spectral parameters (155), and the normalized waveform (290) for later decoding and synthesis. A speech synthesizer (900) decodes the encoded scalar statistics (570), encoded ensemble statistics (560), encoded spectral parameters (490), and encoded normalized excitation waveform (550). The synthesizer (900) then denormalizes (670) the normalized excitation waveform using the scalar statistics and the ensemble statistics, resulting in a decoded excitation waveform. Speech is synthesized (710) from the decoded excitation waveform and the decoded spectral parameters.
摘要翻译：语音编码器（100）计算标量统计（180），综合统计（190），频谱参数（150）和描述语音样本的归一化激励波形（270）。编码器（100）对统计信息（220,230），频谱参数（155）和归一化波形（290）进行编码，用于随后的解码和合成。语音合成器（900）解码编码标量统计（570），编码集合统计（560），编码频谱参数（490）和编码归一化激励波形（550）。然后，合成器（900）使用标量统计和整体统计量化（670）归一化激励波形，导致解码的激励波形。从解码的激励波形和解码的频谱参数合成语音（710）。

9. 发明授权

US5737716A Method and apparatus for encoding speech using neural network technology for speech classification 失效
标题翻译：用于语音分类的神经网络技术对语音进行编码的方法和装置
公开(公告)号：US5737716A
公开(公告)日：1998-04-07
申请号：US578730
申请日：1995-12-26
申请人： Chad Scott Bergstrom , Sidney Clarence Garrison, III, deceased
发明人： Chad Scott Bergstrom , Sidney Clarence Garrison, III, deceased
IPC分类号： G10L19/02 , G10L5/00
CPC分类号： G10L19/02 , G10L25/30
摘要： A low-rate voice coding method and apparatus uses vocoder-embedded neural network techniques. A neural network controlled speech analysis processor includes a neural network which manages speech characterization, encoding , decoding, and reconstruction methodologies. The voice coding method and apparatus uses multi-layer perceptron (MLP) based neural network structures in single or multi-stage arrangements.
摘要翻译：低速率语音编码方法和装置使用声码器嵌入神经网络技术。神经网络控制语音分析处理器包括管理语音表征，编码，解码和重建方法的神经网络。语音编码方法和装置使用基于多层感知器（MLP）的神经网络结构在单级或多级布置。

10. 发明授权

US07327777B2 Method and apparatus for distributed polyphase spread spectrum communications 有权
标题翻译：分布式多相扩频通信的方法和装置
公开(公告)号：US07327777B2
公开(公告)日：2008-02-05
申请号：US10871442
申请日：2004-06-17
申请人： Chad Scott Bergstrom , Jeffery Scott Chuprun , Steve Arneson , Hugh Robert Malone
发明人： Chad Scott Bergstrom , Jeffery Scott Chuprun , Steve Arneson , Hugh Robert Malone
IPC分类号： H04B1/00
CPC分类号： H04B1/7102
摘要： Methods and apparatus are provided for distributed polyphase spread spectrum communication and non-contiguous spectrum underlay. The method includes polyphase channelizing a direct sequence spread spectrum (DSSS) signal, determining available spectrum in an observed frequency range having a noise floor based on detection of polyphase users below the noise floor, distributing the polyphase channelized signal among the available spectrum, and interference mitigation using a combination of standard signal detection and cyclostationary feature detection methods. The apparatus includes: a first processor adapted to polyphase channelize a code division multiple access (CDMA) spectrum and a digitized RF bandwidth containing a discontiguous polyphase waveform distribution; a second processor adapted to detect occupied bands, interferers and polyphase users in a spectrum and determine discontiguous frequency opportunities based on the detected interferers and polyphase users; and a third processor adapted to allocate the polyphase channelized CDMA spectrum among available spectrum based on the discontiguous frequency opportunities.
摘要翻译：提供了分布式多相扩频通信和非连续频谱图的方法和装置。该方法包括多相通道化直接序列扩展频谱（DSSS）信号，基于在本底噪声以下的多相用户的检测，在可用频谱内分布多相信道化信号和干扰信号，确定具有噪声基底的观测频率范围内的可用频谱使用标准信号检测和循环平稳特征检测方法的组合进行缓解。该装置包括：第一处理器，其适于多路信道化码分多址（CDMA）频谱和包含不连续多相波形分布的数字化RF带宽; 适于检测频谱中的占用频带，干扰源和多相用户的第二处理器，并且基于检测到的干扰信号和多相用户来确定不连续的频率机会; 以及第三处理器，其适于基于所述不连续的频率机会在可用频谱内分配所述多相信道化CDMA频谱。

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