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1. 发明授权

US5073940A Method for protecting multi-pulse coders from fading and random pattern bit errors 失效
标题翻译：用于保护多脉冲编码器从渐变和随机图案位错误的方法
公开(公告)号：US5073940A
公开(公告)日：1991-12-17
申请号：US441022
申请日：1989-11-24
申请人： Richard L. Zinser , Steven R. Koch , Raymond L. Toy
发明人： Richard L. Zinser , Steven R. Koch , Raymond L. Toy
IPC分类号： G10L19/00 , G10L19/10 , H03M13/09 , H03M13/23 , H03M13/29 , H03M13/35 , H04B1/66 , H04B14/04 , H04L1/00 , H04L1/20
CPC分类号： H04L1/0054 , G10L19/005 , H03M13/09 , H03M13/23 , H03M13/35 , H04B1/66 , H04L1/0057 , H04L1/0065 , H04L1/20 , H04L1/201 , G10L19/10 , H04L2001/0098
摘要： A low-overhead method of protecting multi-pulse speech coders from the effects of severe random or fading pattern bit errors combines a standard error correcting code (convolutional rate 1/2 coding and Viterbi trellis decoding) for protection in random errors with cyclic redundancy code (CRC) error detection for fading errors. Compensation for detected fading errors takes place within the speech coder. Protection is applied only to the perceptually significant bits in the transmitted frame.
摘要翻译：保护多脉冲语音编码器免受严重随机或衰落模式比特误差影响的低开销方法将采用循环冗余码的随机误差保护标准纠错码（卷积率1/2编码和维特比网格解码）（CRC）错误检测。检测到的衰落误差的补偿发生在语音编码器内。保护仅应用于传输帧中的感知有效位。

2. 发明授权

US5097507A Fading bit error protection for digital cellular multi-pulse speech coder 失效
标题翻译：数字细胞多脉冲语音编码器的渐变位错误保护
公开(公告)号：US5097507A
公开(公告)日：1992-03-17
申请号：US455047
申请日：1989-12-22
申请人： Richard L. Zinser , Steven R. Koch , Raymond L. Toy
发明人： Richard L. Zinser , Steven R. Koch , Raymond L. Toy
IPC分类号： H03M13/00 , G10L19/00 , G10L19/10 , H04B1/66 , H04B7/26 , H04B14/04 , H04L1/00 , H04L1/20
CPC分类号： G10L19/005 , H04B1/66 , H04L1/20 , H04L1/201 , G10L19/10
摘要： Protection of a digital multi-pulse speech coder from fading pattern bit errors common in a digital mobile radio channel is accomplished with error detection techniques which are simple to implement and require no error correcting codes. A synthetic regeneration algorithm is employed which uses only the perceptually significant bits in the transmitted frame. Separate parity checksums for line spectrum pair frequency data, pitch lag data and pulse amplitude data are added to each frame of speech coder bits in the transmitter. The bits are then transmitted through a mobile environment susceptible to fading that induces bursty error patterns in the stream. At the receiving station, the parity checksum bits and speech coder bits are used to determine if an error has occurred in a particular section of the bit stream. Detected errors are flagged and supplied to the speech decoder. The speech decoder uses the error flags to modify its output signal so as to minimize perceptual artifacts in the output speech. Separate checksums are developed for subsets of line spectrum pair (LSP) coefficients and related speech data, whereby a single subset may be error-detected and replaced, rather than an entire frame.
摘要翻译：数字多脉冲语音编码器防止数字移动无线电信道中常见的衰落模式位错误的保护是通过易于实现的错误检测技术实现的，并且不需要纠错码。采用合成再生算法，其仅使用传输帧中的感知有效位。将线谱对频率数据，音调滞后数据和脉冲幅度数据的独立奇偶校验和添加到发送器中的每个语音编码器位。然后，这些位通过易于衰落的移动环境传输，从而在流中引起突发错误模式。在接收站，使用奇偶校验和比特和语音编码器比特来确定比特流的特定部分中是否发生错误。检测到的错误被标记并提供给语音解码器。语音解码器使用错误标志来修改其输出信号，以便最小化输出语音中的感知伪像。针对线谱对（LSP）系数和相关语音数据的子集开发了单独的校验和，由此可以对单个子集进行错误检测和替换，而不是整个帧。

3. 发明授权

US07529662B2 LPC-to-MELP transcoder 失效
标题翻译： LPC-MELP转码器
公开(公告)号：US07529662B2
公开(公告)日：2009-05-05
申请号：US11513729
申请日：2006-08-31
申请人： Richard L. Zinser, Jr. , Steven R. Koch
发明人： Richard L. Zinser, Jr. , Steven R. Koch
IPC分类号： G10L19/00 , G10L19/04 , G10L19/14
CPC分类号： H04W88/181 , G10L19/00 , G10L19/0204 , G10L19/06 , G10L19/173 , G10L25/78
摘要： A method for transcoding a bit stream encoded according to a linear predictive coding (LPC) standard to a bit stream encoded according to a mixed-excitation linear prediction (MELP) standard, including: decoding a bit stream into a first set of vocoder parameters compatible with the LPC standard; transforming the first set of vocoder parameters into a second set of vocoder parameters compatible with the MELP standard without converting the first set of vocoder parameters to an analog or digital waveform representation; and encoding the second set of vocoder parameters into a bit stream compatible with the MELP vocoder standard.
摘要翻译：一种用于将根据线性预测编码（LPC）标准编码的比特流代码转换为根据混合激励线性预测（MELP）标准编码的比特流的方法，包括：将比特流解码为兼容的第一组声码器参数具有LPC标准; 将第一组声码器参数转换成与MELP标准兼容的第二组声码器参数，而不将第一组声码器参数转换为模拟或数字波形表示; 以及将第二组声码器参数编码为与MELP声码器标准兼容的比特流。

4. 发明授权

US06678654B2 TDVC-to-MELP transcoder 失效
标题翻译： TDVC-MELP代码转换器
公开(公告)号：US06678654B2
公开(公告)日：2004-01-13
申请号：US09991695
申请日：2001-11-26
申请人： Richard L. Zinser, Jr. , Steven R. Koch
发明人： Richard L. Zinser, Jr. , Steven R. Koch
IPC分类号： G10L1900
CPC分类号： H04W88/181 , G10L19/00 , G10L19/0204 , G10L19/06 , G10L19/173 , G10L25/78
摘要： The system and method of the present invention comprises a compressed domain universal transcoder that transcodes a bit stream representing frames of data encoded according to a first compression standard (TDVC coding standard) to a bit stream representing frames of data according to a second compression standard (MELP coding standard). The method includes decoding a bit stream into a first set of parameters compatible with a first compression standard. Next, the first set of parameters are transformed into a second set of parameters compatible with a second compression standard without converting the first set of parameters to an analog or digital waveform representation. Lastly, the second set of parameters are encoded into a bit stream compatible with the second compression standard.
摘要翻译：本发明的系统和方法包括压缩域通用代码转换器，其将表示根据第一压缩标准（TDVC编码标准）编码的数据的比特流转码为表示根据第二压缩标准的数据帧的比特流（ MELP编码标准）。该方法包括将比特流解码成与第一压缩标准兼容的第一组参数。接下来，将第一组参数变换为与第二压缩标准兼容的第二组参数，而不将第一组参数转换为模拟或数字波形表示。最后，第二组参数被编码成与第二压缩标准兼容的比特流。

5. 发明授权

US07430507B2 Frequency domain format enhancement 有权
标题翻译：频域格式增强
公开(公告)号：US07430507B2
公开(公告)日：2008-09-30
申请号：US11513804
申请日：2006-08-31
申请人： Richard L. Zinser, Jr. , Steven R. Koch
发明人： Richard L. Zinser, Jr. , Steven R. Koch
IPC分类号： G10L21/00
CPC分类号： H04W88/181 , G10L19/00 , G10L19/0204 , G10L19/06 , G10L19/173 , G10L25/78
摘要： A method for enhancing speech prediction coefficient signals, including: a) receiving a set of prediction coefficient signals; b) calculating a set of amplitude spectrum coefficient signals based on the prediction coefficient signals; c) calculating a set of enhancement coefficient signals based on the amplitude spectrum coefficient signals; d) calculating a set of enhanced autocorrelation coefficient signals based on the enhancement coefficient signals; e) converting at least some of the enhanced autocorrelation coefficient signals into reflection coefficient signals; f) testing the range of values of the reflection coefficient signals; and g) converting at least some of the tested reflection coefficient signals into prediction coefficient signals.
摘要翻译：一种用于增强语音预测系数信号的方法，包括：a）接收一组预测系数信号; b）基于预测系数信号计算一组振幅谱系数信号; c）基于幅度谱系数信号计算一组增强系数信号; d）基于增强系数信号计算一组增强自相关系数信号; e）将所述增强自相关系数信号中的至少一些转换为反射系数信号; f）测试反射系数信号的值的范围; 以及g）将所测试的反射系数信号中的至少一些转换为预测系数信号。

6. 发明授权

US07165035B2 Compressed domain conference bridge 有权
标题翻译：压缩域会议桥
公开(公告)号：US07165035B2
公开(公告)日：2007-01-16
申请号：US11007922
申请日：2004-12-09
申请人： Richard L. Zinser , Steven R. Koch , Philip T. Choong
发明人： Richard L. Zinser , Steven R. Koch , Philip T. Choong
IPC分类号： G10L19/00
CPC分类号： H04W88/181 , G10L19/00 , G10L19/0204 , G10L19/06 , G10L19/173 , G10L25/78
摘要： The system and method of the present invention comprises a compressed domain conference bridge. The method includes maintaining full intelligibility for all users even when there are multiple simultaneous talkers. The bridge also allows a user to hear a plurality of talkers over a single channel.
摘要翻译：本发明的系统和方法包括压缩域会议桥。该方法包括为所有用户保持完整的清晰度，即使有多个同时发言者也可以。桥接器还允许用户通过单个信道听到多个说话者。

7. 发明授权

US07062434B2 Compressed domain voice activity detector 有权
公开(公告)号：US07062434B2
公开(公告)日：2006-06-13
申请号：US10242465
申请日：2002-09-13
申请人： Richard L. Zinser, Jr. , Steven R. Koch
发明人： Richard L. Zinser, Jr. , Steven R. Koch
IPC分类号： G10L19/00
CPC分类号： H04W88/181 , G10L19/00 , G10L19/0204 , G10L19/06 , G10L19/173 , G10L25/78
摘要： The system and method of the present invention comprises a compressed domain voice activity detector that detects the presence or absence of voice activity in a digital input signal. The method includes converting a digital input signal into parametric data. The parametric data is subsequently analyzed, and then compared against a background noise threshold to determine if voice activity is present.

8. 发明授权

US07668713B2 MELP-to-LPC transcoder 失效
标题翻译： MELP到LPC转码器
公开(公告)号：US07668713B2
公开(公告)日：2010-02-23
申请号：US11514574
申请日：2006-09-01
申请人： Richard L. Zinser, Jr. , Steven R. Koch
发明人： Richard L. Zinser, Jr. , Steven R. Koch
IPC分类号： G10L19/00 , G10L19/04 , G10L19/14
CPC分类号： H04W88/181 , G10L19/00 , G10L19/0204 , G10L19/06 , G10L19/173 , G10L25/78
摘要： A method for transcoding a bit stream encoded according to a mixed-excitation linear prediction (MELP) standard to a bit stream encoded according to a linear predictive coding (LPC) standard, including: decoding a bit stream into a first set of vocoder parameters compatible with the MELP standard; transforming the first set of vocoder parameters into a second set of vocoder parameters compatible with the LPC standard without converting the first set of vocoder parameters to an analog or digital waveform representation; and encoding the second set of vocoder parameters into a bit stream compatible with the LPC vocoder standard.
摘要翻译：一种用于将根据混合激励线性预测（MELP）标准编码的比特流代码转换为根据线性预测编码（LPC）标准编码的比特流的方法，包括：将比特流解码为兼容的第一组声码器参数具有MELP标准; 将第一组声码器参数转换成与LPC标准兼容的第二组声码器参数，而不将第一组声码器参数转换为模拟或数字波形表示; 以及将所述第二组声码器参数编码为与所述LPC声码器标准兼容的比特流。

9. 发明授权

US5710781A Enhanced fading and random pattern error protection for dynamic bit allocation sub-band coding 失效
标题翻译：用于动态位分配子带编码的增强衰落和随机模式错误保护
公开(公告)号：US5710781A
公开(公告)日：1998-01-20
申请号：US460000
申请日：1995-06-02
申请人： Richard L. Zinser , Steven R. Koch
发明人： Richard L. Zinser , Steven R. Koch
IPC分类号： G10L19/00 , H04B1/66 , H04L1/00
CPC分类号： H04B1/667 , G10L19/005
摘要： A method for correcting random errors, and detecting and replacing fading errors in radio frequency (RF) digital transmissions, such as voice transmission. In a Dynamic Bit Allocation Sub-Band Coder (DBASBC), bits corresponding to sub-band energy levels are protected before transmission. If the bit error rate detected for a current speech frame is sufficiently high for a sufficient period of time, the band energies for the speech frame are zeroed thereby effectively muting the speech coder output for that frame. If muting is not required but there still exists a bit error condition detected as a fade, the speech frame is deemed corrupted. As a result, the energies for the bands in the current speech frame are selectively replaced with the band energies from the previous frame (assuming the previous frame band energies are reasonable values). Otherwise, the individual band energies are examined one by one. If the individual band energy requires correction, the band energies are replaced individually. In addition, the energy replacement values are checked for reasonableness.
摘要翻译：一种用于校正随机误差以及检测和替换诸如语音传输的射频（RF）数字传输中的衰落误差的方法。在动态位分配子带编码器（DBASBC）中，对应于子带能级的位在传输之前被保护。如果对于当前语音帧检测到的误码率在足够的时间段内足够高，则将语音帧的频带能量归零，从而有效地使该帧的语音编码器输出静音。如果不需要静音，但仍然存在检测为淡入淡出的位错误状况，则认为该语音帧已损坏。结果，当前语音帧中的频带的能量被有选择地取代了来自前一帧的频带能量（假设前一帧频带能量是合理的值）。否则，逐个检查单个频带能量。如果单个频带能量需要校正，则频带能量被单独替换。另外，检查能量替换值是否合理。

10. 发明授权

US5138661A Linear predictive codeword excited speech synthesizer 失效
标题翻译：线性预测码字激励语音合成器
公开(公告)号：US5138661A
公开(公告)日：1992-08-11
申请号：US612056
申请日：1990-11-13
申请人： Richard L. Zinser , Steven R. Koch
发明人： Richard L. Zinser , Steven R. Koch
IPC分类号： G10L13/02 , G10L19/04
CPC分类号： G10L13/02
摘要： A linear predictive codeword excited speech synthesizer performs a voiced/unvoiced decision to determine the type of excitation to be supplied to a synthesis filter. The synthesizer selects the excitation for voiced speech from a codebook, using an analysis-by-synthesis technique in which the transfer function of a linear predictive coefficient synthesis filter closely resembles the gross spectral shape of the input speech signal. By pitch-periodic repetition of the selected codebook vector, a high quality synthetic speech output is generated.
摘要翻译：线性预测码字激励语音合成器执行有声/无声决定以确定要提供给合成滤波器的激励的类型。合成器使用其中线性预测系数合成滤波器的传递函数与输入语音信号的总频谱形状非常相似的分解合成技术来选择来自码本的有声语音的激励。通过所选码本向量的间距周期性重复，产生高质量的合成语音输出。

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