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1.发明授权Method and apparatus for encoding compressible data for transmission over variable quality communication channel 有权用于编码可压缩数据以在可变质量通信信道上传输的方法和装置公开(公告)号：US07339881B1
公开(公告)日：2008-03-04
申请号：US10437422
申请日：2003-05-12
CPC分类号： H04L27/2608 , H04W52/34
摘要： A multi-carrier communication system (400) groups subchannels (802) into different quality-of-signal (QoS) regions (804). An unconstrained optimization process (1200) is performed independently for the subchannels (802) of the different QoS regions (804) to allocate bit rates and power to the individual subchannels (802) so that the indicated QoS will result. Coders (504, 508, 512, 516, 1700) partition and error-correction encode source information using encoding schemes matched to the different QoS regions (804). A set (1100) of only a few directed QoS partition vectors (1102) direct the unconstrained optimization process (1200) to attempt bit-rate and power allocations on only a few promising groupings of subchannels (802) and QoS regions (804). An iterative process may take place between bit-rate and power allocation on one side and source information coding on the other for different directed QoS partition vectors (1102) to identify the best solution. A coder (1700) may use a dual allocation process (1800) to iteratively combine a rate-allocation process (1724) with a QoS-region-allocation process (1726) to specify codebooks (1720) for use by a codebook quantizer (1718).
摘要翻译： 多载波通信系统（400）将子信道（802）分组成不同的信号质量（QoS）区域（804）。 对不同QoS区域（804）的子信道（802）独立地执行无约束优化处理（1200），以向各个子信道（802）分配比特率和功率，从而导致指示的QoS。 （504,508,512,516,1700）使用与不同QoS区域匹配的编码方案来对源信息进行分区和纠错编码（804）。 只有少数有针对性的QoS分区向量（1102）的集合（1100）引导无约束优化过程（1200）来仅对少量有希望的子信道分组（802）和QoS区域（804）尝试比特率和功率分配。 迭代过程可以在一侧的比特率和功率分配之间进行，另一方面对于不同的定向QoS分区向量（1102）可以进行源信息编码，以识别最佳解决方案。 编码器（1700）可以使用双重分配过程（1800）来迭代地组合速率分配过程（1724）与QoS区域分配过程（1726），以指定码本（1720）供码本量化器（1718）使用 ）。
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2.发明授权公开(公告)号：US07310301B1
公开(公告)日：2007-12-18
申请号：US10417942
申请日：2003-04-18
CPC分类号： H04L27/2608 , H04W52/34
摘要： A multi-carrier communication system (400) groups subchannels (802) into different quality-of-signal (QoS) regions (804). An unconstrained optimization process (1200) is performed independently for the subchannels (802) of the different QoS regions (804) to allocate bit rates and power to the individual subchannels (802) so that the indicated QoS will result. Coders (504, 508, 512, 516) partition and error-correction encode source information using encoding schemes matched to the different QoS regions (804). A set (1100) of only a few directed QoS partition vectors (1102) direct the unconstrained optimization process (1200) to attempt bit-rate and power allocations on only a few promising groupings of subchannels (802) and QoS regions (804). An iterative process may take place between bit-rate and power allocation on one side and source information coding on the other for different directed QoS partition vectors (1102) to identify the best solution.
摘要翻译： 多载波通信系统（400）将子信道（802）分组成不同的信号质量（QoS）区域（804）。 对不同QoS区域（804）的子信道（802）独立地执行无约束优化处理（1200），以向各个子信道（802）分配比特率和功率，从而导致指示的QoS。 （504,508,512,516）使用与不同QoS区域匹配的编码方案对分组和纠错编码源信息（804）。 只有少数有针对性的QoS分区向量（1102）的集合（1100）将无约束优化过程（1200）引导到对子信道（802）和QoS区域（804）的少数有希望的分组上尝试比特率和功率分配。 迭代过程可以在一侧的比特率和功率分配之间进行，另一方面对于不同的定向QoS分区向量（1102）可以进行源信息编码，以识别最佳解决方案。
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3.发明授权公开(公告)号：US07672381B1
公开(公告)日：2010-03-02
申请号：US09690993
申请日：2000-10-17
申请人： John Eric Kleider , Bruce Alan Fette , Jeffrey Scott Chuprun , Carl Steven Gifford , Chad S. Bergstrom
发明人： John Eric Kleider , Bruce Alan Fette , Jeffrey Scott Chuprun , Carl Steven Gifford , Chad S. Bergstrom
CPC分类号： H04L5/0064 , H04L5/0007 , H04L5/0046 , H04L5/006 , H04L5/0094
摘要： A method (20) of orthogonal frequency-division multiplex (OFDM) communication via a plurality of subchannels (30) within a noncontiguous wideband channel (24) is provided. The method (20) determines an SNR for each of the subchannels (30). The method (20) then designates a subchannel (30) as clear (93) when its SNR is greater than a least-SNR threshold (70), as impeded (95) when its SNR is less than the least-SNR threshold and greater than an SNR-evaluation threshold, and as obstructed (111) when its SNR is less than both the least-SNR and the SNR-evaluation thresholds. The method (20) then transmits OFDM data (34) so that each of the clear subchannels receives the OFDM data (34) at a maximum subchannel signal level (40), each of the impeded subchannels receives the OFDM data (34) at an intermediate subchannel signal level (42), and each of the obstructed subchannels receives the OFDM data (34) at zero subchannel signal level (44).
摘要翻译： 提供了一种通过非连续宽带信道（24）内的多个子信道（30）进行正交频分复用（OFDM）通信的方法（20）。 方法（20）确定每个子信道（30）的SNR。 当方法（20）当其SNR大于最小SNR阈值（70）时，将子信道（30）指定为清除（93），当其SNR小于最小SNR阈值且更大时阻碍（95） 并且当SNR小于最小SNR和SNR估计阈值时，被阻塞（111）。 然后，方法（20）发送OFDM数据（34），使得每个清除子信道以最大子信道信号电平（40）接收OFDM数据（34），每个受阻子信道在一个 中间子信道信号电平（42），并且每个被阻塞的子信道在零子信道信号电平（44）处接收OFDM数据（34）。
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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。
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5.发明授权Method and apparatus for implementing vector quantization of speech parameters 失效用于实现语音参数矢量量化的方法和装置
公开(公告)号：US5797121A
公开(公告)日：1998-08-18
申请号：US578818
申请日：1995-12-26
CPC分类号： G10L19/06 , H03M7/3082
摘要： A vocoder (10) includes a digital signal processor (18) and a vector quantizer (28) implemented in hardware external to the digital signal processor (18). The vector quantizer (28) includes an analysis codebook (32) having a multitude of scalar quantized code vectors (60). A frame of digitized speech is translated into speech parameters, which are then scalar quantized to form a source vector. This scalar quantized source vector is then vector quantized in the vector quantizer (28) prior to transmission into a communication channel (22). A separate synthesis codebook (30) is used in decompressing vocoded speech received from the communication channel (22).
摘要翻译： 声码器（10）包括以数字信号处理器（18）外部的硬件实现的数字信号处理器（18）和矢量量化器（28）。 矢量量化器（28）包括具有多个标量量化码矢量（60）的分析码本（32）。 将数字化语音的帧转换成语音参数，然后将其标量化以形成源向量。 然后在传送到通信信道（22）之前，在矢量量化器（28）中对该标量量化源向量进行矢量量化。 单独的合成码本（30）用于解压缩从通信信道（22）接收的声音语音。
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6.发明授权Method and apparatus for encoding speech excitation waveforms through analysis of derivative discontinues 失效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
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。
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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
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。
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公开(公告)号：US06714085B1
公开(公告)日：2004-03-30
申请号：US10280541
申请日：2002-10-24
申请人： Bruce Alan Fette
发明人： Bruce Alan Fette
IPC分类号： H03L7093
摘要： A PLL-type frequency synthesizer (10) in which a loop filter (24) state is recorded during an earlier hop to a given frequency then assigned back to the loop filter (24) during a subsequent hop to the same frequency is disclosed. The state is recorded through an A/D converter (48) and assigned through a D/A converter (60). Offset and linearity error is compensated in a compensation circuit (54) so that the state subsequently assigned to the loop filter (24) accurately matches the state that was previously measured for recording. Reference frequency and output signal dividers (16, 40) are both immediately initialized at a hop boundary (82) so that the signals compared by a phase comparator (20) are forced into a phase-matched condition.
摘要翻译： 公开了一种PLL型频率合成器（10），其中环路滤波器（24）状态在较早的跳频期间被记录到给定频率，然后在随后的跳频期间被分配回环路滤波器（24）至相同的频率。 该状态通过A / D转换器（48）记录并通过D / A转换器（60）分配。 在补偿电路（54）中补偿偏移和线性误差，使得随后分配给环路滤波器（24）的状态与先前测量用于记录的状态精确匹配。 参考频率和输出信号分配器（16,40）都在跳跃边界（82）处立即被初始化，使得由相位比较器（20）比较的信号被强制进入相位匹配条件。
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公开(公告)号：US06301265B1
公开(公告)日：2001-10-09
申请号：US09134782
申请日：1998-08-14
IPC分类号： H04J316
CPC分类号： H04L1/0009 , G10L19/002 , G10L19/005 , H04L1/0014 , H04L69/40
摘要： A system and method for determining operating parameters to control a communication rate for an adaptive rate communication system includes a transmitter (101) to transmit a signal (135) through a network (142) to a receiver (103). The receiver (103) determines operating parameters based on, among other things, packet information from a received signal (e.g., packet). The receiver conveys the operating parameters to the transmitter for use in subsequent communications from the transmitter (101) to the receiver (103).
摘要翻译： 用于确定用于自适应速率通信系统的通信速率的操作参数的系统和方法包括：通过网络（142）向接收机（103）发送信号（135）的发射机（101）。 接收器（103）基于来自接收信号（例如，分组）的分组信息来确定操作参数。 所述接收机将所述操作参数传送到所述发射机，以用于从所述发射机（101）到所述接收机（103）的后续通信。
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10.发明授权System and method for communicating a perceptually encoded speech spectrum signal 失效用于传达感知编码的语音频谱信号的系统和方法公开(公告)号：US06199040B1
公开(公告)日：2001-03-06
申请号：US09122610
申请日：1998-07-27
IPC分类号： G10L1900
CPC分类号： G10L19/00 , G10L2019/0005 , G10L2019/0007
摘要： System efficiently communicates a perceptually encoded speech spectrum signal from a transmitter to a receiver. The transmitter includes a speech analyzer which accepts a speech signal input and generates a parameterized speech signal. The transmitter also includes a vector quantizer for generating the perceptually encoded speech spectrum signal from the parameterized speech signal. The receiver decodes the perceptually encoded speech spectrum signal to produce decoded spectral parameters to further produce a synthetic speech output. The vector quantizer performs a method for partitioning a vector quantizer (VQ) codebook to produce perceptually organized sub-codebooks. The vector quantizer performs a second method for quantizing a vector based on the perceptually organized sub-codebooks. The second method identifies a vector, from one of the perceptually organized sub-codebooks, to perceptually model the speech signal input.
摘要翻译： 系统有效地将感知编码的语音频谱信号从发射机传送到接收机。 发射机包括接收语音信号输入并生成参数化语音信号的语音分析器。 发射机还包括用于从参数化语音信号产生感知编码语音频谱信号的矢量量化器。 接收机对感知编码的语音频谱信号进行解码以产生解码的频谱参数，以进一步产生合成语音输出。 矢量量化器执行用于分割矢量量化器（VQ）码本以产生感知组织的子码本的方法。 矢量量化器基于感知组织的子码本执行用于量化矢量的第二种方法。 第二种方法从感知组织的子码本之一中识别出一种矢量，以感知地对语音信号输入进行建模。
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