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1. 发明授权

US07392179B2 LPC vector quantization apparatus 有权
标题翻译： LPC矢量量化装置
公开(公告)号：US07392179B2
公开(公告)日：2008-06-24
申请号：US10416532
申请日：2001-11-29
申请人： Kazutoshi Yasunaga , Toshiyuki Morii , Hiroyuki Ehara , Kazunori Mano , Yusuke Hiwasaki
发明人： Kazutoshi Yasunaga , Toshiyuki Morii , Hiroyuki Ehara , Kazunori Mano , Yusuke Hiwasaki
IPC分类号： G10L19/12
CPC分类号： G10L19/07 , G10L2019/0005 , G10L2019/0014 , H03M7/3082
摘要： The present invention carries out pre-selection on many LPC codevectors stored in an LSF codebook 101 using a weighted Euclidean distortion as a measure and carries out a full-code selection on the LPC codevectors left after the pre-selection using an amount of distortion in a spectral space as a measure. This makes it possible to improve the quantization performance of the LPC parameter vector quantizer and improve the quality of synthesized speech of the speech coder/decoder.
摘要翻译：本发明使用加权的欧氏距离失真作为度量对存储在LSF码本101中的许多LPC码矢量进行预选择，并且在预选择之后的LPC码矢量上执行全码选择，使用失真量作为度量的光谱空间。这使得可以提高LPC参数矢量量化器的量化性能并提高语音编码器/解码器的合成语音质量。

2. 发明授权

US07478042B2 Speech decoder that detects stationary noise signal regions 失效
标题翻译：用于检测平稳噪声信号区域的语音解码器
公开(公告)号：US07478042B2
公开(公告)日：2009-01-13
申请号：US10432237
申请日：2001-11-30
申请人： Hiroyuki Ehara , Kazutoshi Yasunaga , Kazunori Mano , Yusuke Hiwasaki
发明人： Hiroyuki Ehara , Kazutoshi Yasunaga , Kazunori Mano , Yusuke Hiwasaki
IPC分类号： G10L11/06 , G10L19/12 , G10L15/00 , G10L21/00
CPC分类号： G10L19/012 , G10L19/04 , G10L25/78 , G10L25/90
摘要： A first determiner 121 tentatively determines whether the current processing unit represents a stationary noise period, based on stationary properties of a decoded signal. Based on the tentative determination result and a determination result of the periodicity of the decoded signal, a second determiner 124 determines whether the current processing unit represents a stationary noise period, thereby distinguishing a decoded signal including a stationary speech signal such as a stationary vowel from stationary noise and correctly identifying the stationary noise period.
摘要翻译：第一确定器121基于解码信号的静止特性暂时确定当前处理单元是否表示静止噪声周期。根据临时确定结果和解码信号的周期性的确定结果，第二确定器124确定当前处理单元是否表示静止噪声周期，从而将包括诸如固定元音的固定语音信号的解码信号与稳定的噪声和正确识别的稳定的噪声周期。

3. 发明授权

US07580834B2 Fixed sound source vector generation method and fixed sound source codebook 失效
标题翻译：固定声源矢量生成方法和固定声源码本
公开(公告)号：US07580834B2
公开(公告)日：2009-08-25
申请号：US10505100
申请日：2003-02-20
申请人： Hiroyuki Ehara , Kazutoshi Yasunaga , Kazunori Mano , Yusuke Hiwasaki
发明人： Hiroyuki Ehara , Kazutoshi Yasunaga , Kazunori Mano , Yusuke Hiwasaki
IPC分类号： G10L19/00
CPC分类号： G10L19/12
摘要： At the speech encoding end, upon generation of an fixed excitation vector, the shape of an excitation vector output from pulse excitation codebook 301 is identified in pulse excitation vector shape identifier 302, a dispersion vector used for excitation vectors of the shape is output from dispersion vector storage 304, and, in dispersion vector convolution processor 303, dispersion vector convolution processing of the excitation vector is performed. In particular, when a pulse excitation vector having a specific shape of high frequency of use is output from pulse excitation codebook 301, pulse excitation vector shape identifier 302 controls dispersion vector storage 304 in such a way that an additional dispersion vector prepared dedicated to the pulse excitation vector is output. By this means, it is possible to provide a technology that improves the quality of decoded speech and that decodes speech more natural and audible to the user.
摘要翻译：在语音编码结束时，在产生固定的激励矢量时，从脉冲激励码本301输出的激励矢量的形状在脉冲激励矢量形状识别符302中被识别，用于形状的激励矢量的色散矢量从色散向量存储器304，并且在色散向量卷积处理器303中，执行激励矢量的色散向量卷积处理。特别地，当从脉冲激励码本301输出具有高频用特定形状的脉冲激励矢量时，脉冲激励矢量形状识别器302以这样一种方式控制色散矢量存储器304，使得专用于脉冲的附加色散矢量输出激励矢量。通过这种方式，可以提供提高解码语音质量的技术，并且使用户更自然和可听地解码语音。

4. 发明授权

US07065338B2 Method, device and program for coding and decoding acoustic parameter, and method, device and program for coding and decoding sound 失效
标题翻译：用于编码和解码声学参数的方法，装置和程序，以及用于编码和解码声音的方法，装置和程序
公开(公告)号：US07065338B2
公开(公告)日：2006-06-20
申请号：US10432722
申请日：2001-11-27
申请人： Kazunori Mano , Yusuke Hiwasaki , Hiroyuki Ehara , Kazutoshi Yasunaga
发明人： Kazunori Mano , Yusuke Hiwasaki , Hiroyuki Ehara , Kazutoshi Yasunaga
IPC分类号： H04B1/26
CPC分类号： G10L19/012 , G10L19/06 , G10L19/12 , G10L2019/0005 , G10L2019/0007
摘要： In coding and decoding an acoustic parameter, a weighted vector is generated by multiplying a code vector output in a past frame and a code vector selected in a present frame by weighting factors respectively selected from a factor code book and adding the products to each other.
摘要翻译：在对声学参数进行编码和解码时，通过将分别从因子码本中选择的加权因子和相加的乘积乘以在过去帧中输出的码矢量和当前帧中选择的码矢量来生成加权矢量。

5. 发明申请

US20050228652A1 Fixed sound source vector generation method and fixed sound source codebook 失效
标题翻译：固定声源矢量生成方法和固定声源码本
公开(公告)号：US20050228652A1
公开(公告)日：2005-10-13
申请号：US10505100
申请日：2003-02-20
申请人： Hiroyuki Ehara , Kazutoshi Yasunaga , Kazunori Mano , Yusuke Hiwasaki
发明人： Hiroyuki Ehara , Kazutoshi Yasunaga , Kazunori Mano , Yusuke Hiwasaki
IPC分类号： G10L19/04 , G10L19/10
CPC分类号： G10L19/12
摘要： At the speech encoding end, upon generation of an fixed excitation vector, the shape of an excitation vector output from pulse excitation codebook 301 is identified in pulse excitation vector shape identifier 302, a dispersion vector used for excitation vectors of the shape is output from dispersion vector storage 304, and, in dispersion vector convolution processor 303, dispersion vector convolution processing of the excitation vector is performed. In particular, when a pulse excitation vector having a specific shape of high frequency of use is output from pulse excitation codebook 301, pulse excitation vector shape identifier 302 controls dispersion vector storage 304 in such a way that an additional dispersion vector prepared dedicated to the pulse excitation vector is output. By this means, it is possible to provide a technology that improves the quality of decoded speech and that decodes speech more natural and audible to the user.
摘要翻译：在语音编码结束时，在产生固定的激励矢量时，从脉冲激励码本301输出的激励矢量的形状在脉冲激励矢量形状识别符302中被识别，用于形状的激励矢量的色散矢量从色散向量存储器304，并且在色散向量卷积处理器303中，执行激励矢量的色散向量卷积处理。特别地，当从脉冲激励码本301输出具有高频用特定形状的脉冲激励矢量时，脉冲激励矢量形状识别器302以这样一种方式控制色散矢量存储器304，使得专用于脉冲的附加色散矢量输出激励矢量。通过这种方式，可以提供提高解码语音质量的技术，并且使用户更自然和可听地解码语音。

6. 发明申请

US20070100613A1 Excitation vector generator, speech coder and speech decoder 审中-公开
标题翻译：激励矢量发生器，语音编码器和语音解码器
公开(公告)号：US20070100613A1
公开(公告)日：2007-05-03
申请号：US11508852
申请日：2006-08-24
申请人： Kazutoshi Yasunaga , Toshiyuki Morii , Taisuke Watanabe , Hiroyuki Ehara
发明人： Kazutoshi Yasunaga , Toshiyuki Morii , Taisuke Watanabe , Hiroyuki Ehara
IPC分类号： G10L19/12
CPC分类号： G10L19/135 , G10L19/12 , G10L2019/0007 , G10L2019/0013
摘要： An excitation vector generator includes an input vector provider configured to provide an input vector having at least one pulse, each pulse having a pre-determined position and a respective polarity. An arranger is configured to arrange a waveform in accordance with the position and the polarity of the pulse. A shape of the waveform comprises a pulse-like shape and a length of the waveform is shorter than a length of a sub-frame.
摘要翻译：激励矢量发生器包括：输入矢量提供器，被配置为提供具有至少一个脉冲的输入矢量，每个脉冲具有预定位置和相应的极性。编排器被配置为根据脉冲的位置和极性布置波形。波形的形状包括脉冲状形状，并且波形的长度比子帧的长度短。

7. 发明授权

US08036887B2 CELP speech decoder modifying an input vector with a fixed waveform to transform a waveform of the input vector 有权
标题翻译： CELP语音解码器用固定波形修改输入向量，以变换输入矢量的波形
公开(公告)号：US08036887B2
公开(公告)日：2011-10-11
申请号：US12781049
申请日：2010-05-17
申请人： Kazutoshi Yasunaga , Toshiyuki Morii , Hiroyuki Ehara
发明人： Kazutoshi Yasunaga , Toshiyuki Morii , Hiroyuki Ehara
IPC分类号： G10L19/12
CPC分类号： G10L19/135 , G10L19/12 , G10L2019/0007 , G10L2019/0013
摘要： A CELP speech decoder includes an adaptive codebook that generates an adaptive code vector and a random codebook that generates a random code vector. The random codebook includes an input vector provider that provides an input vector including at least one pulse, each pulse having a position and a polarity, a fixed waveform storage that stores at least one fixed waveform, and a selector that selects at least one of a first process and a second process based on a value of an adaptive codebook gain. The random codebook further includes a convolution section that generates the random code vector by convoluting the at least one fixed waveform with the input vector when the first process is selected. A synthesis filter outputs synthesized speech by performing linear prediction coefficient synthesis on a signal based on the adaptive code vector and the random code vector.
摘要翻译： CELP语音解码器包括产生自适应码矢量的自适应码本和产生随机码矢量的随机码本。所述随机码本包括输入向量提供者，所述输入向量提供器提供包括至少一个脉冲，每个具有位置和极性的脉冲，存储至少一个固定波形的固定波形存储器的输入向量，以及选择器，第一处理和基于自适应码本增益的值的第二处理。所述随机码本还包括卷积部分，其通过在选择所述第一处理时将所述至少一个固定波形与所述输入矢量进行卷积来生成所述随机码矢量。合成滤波器通过对基于自适应码矢量和随机码矢量的信号执行线性预测系数合成来输出合成语音。

8. 发明授权

US06947889B2 Excitation vector generator and a method for generating an excitation vector including a convolution system 有权
标题翻译：励磁矢量发生器和用于产生包括卷积系统的激励矢量的方法
公开(公告)号：US06947889B2
公开(公告)日：2005-09-20
申请号：US09843939
申请日：2001-04-30
申请人： Kazutoshi Yasunaga , Toshiyuki Morii , Hiroyuki Ehara
发明人： Kazutoshi Yasunaga , Toshiyuki Morii , Hiroyuki Ehara
IPC分类号： G10L19/00 , G10L19/08 , G10L19/12 , G10L19/135 , G10L19/14 , G10L21/00 , G10I19/14
CPC分类号： G10L19/135 , G10L19/12 , G10L2019/0007 , G10L2019/0013
摘要： A random code vector reading section and a random codebook of a conventional CELP type speech coder/decoder are respectively replaced with an oscillator for outputting different vector streams in accordance with values of input seeds, and a seed storage section for storing a plurality of seeds. This makes it unnecessary to store fixed vectors as they are in a fixed codebook (ROM), thereby considerably reducing the memory capacity.
摘要翻译：传统CELP型语音编码器/解码器的随机码矢量读取部分和随机码本分别被替换为根据输入种子的值输出不同矢量流的振荡器和用于存储多个种子的种子存储部分。这使得不必像固定码本（ROM）一样存储固定向量，从而显着地降低了存储器容量。

9. 发明申请

US20050203736A1 Excitation vector generator, speech coder and speech decoder 有权
标题翻译：激励矢量发生器，语音编码器和语音解码器
公开(公告)号：US20050203736A1
公开(公告)日：2005-09-15
申请号：US11126171
申请日：2005-05-11
申请人： Kazutoshi Yasunaga , Toshiyuki Morii , Hiroyuki Ehara
发明人： Kazutoshi Yasunaga , Toshiyuki Morii , Hiroyuki Ehara
IPC分类号： G10L19/00 , G10L19/08 , G10L19/12 , G10L19/135 , G10L19/14 , G10L21/00
CPC分类号： G10L19/135 , G10L19/12 , G10L2019/0007 , G10L2019/0013
摘要： A noise canceller removes a noise component from an input speech signal. The noise canceller includes a noise cancellation coefficient adjuster that adjusts a noise cancellation coefficient to determine an amount of noise cancellation. A noise spectrum storage device stores an estimated noise spectrum. A noise estimator estimates a noise spectrum by comparing an input spectrum with a noise spectrum stored in the noise spectrum storage device. A noise canceling/spectrum compensator subtracts the noise spectrum stored in the noise spectrum storage device from the input spectrum based on a coefficient acquired by the noise cancellation coefficient adjuster.
摘要翻译：噪声消除器从输入语音信号中去除噪声分量。噪声消除器包括噪声消除系数调节器，其调整噪声消除系数以确定噪声消除量。噪声频谱存储装置存储估计的噪声谱。噪声估计器通过将输入频谱与存储在噪声频谱存储装置中的噪声谱进行比较来估计噪声谱。噪声消除/频谱补偿器基于由噪声消除系数调整器获取的系数从输入频谱中减去存储在噪声频谱存储装置中的噪声谱。

10. 发明授权

US06757650B2 Excitation vector generator, speech coder and speech decoder 有权
标题翻译：激励矢量发生器，语音编码器和语音解码器
公开(公告)号：US06757650B2
公开(公告)日：2004-06-29
申请号：US09855708
申请日：2001-05-16
申请人： Kazutoshi Yasunaga , Toshiyuki Morii , Taisuke Watanabe , Hiroyuki Ehara
发明人： Kazutoshi Yasunaga , Toshiyuki Morii , Taisuke Watanabe , Hiroyuki Ehara
IPC分类号： G10L1904
CPC分类号： G10L19/135 , G10L19/12 , G10L2019/0007 , G10L2019/0013
摘要： A random code vector reading section and a random codebook of a conventional CELP type speech coder/decoder are respectively replaced with an oscillator for outputting different vector streams in accordance with values of input seeds, and a seed storage section for storing a plurality of seeds. This makes it unnecessary to store fixed vectors as they are in a fixed codebook (ROM), thereby considerably reducing the memory capacity.
摘要翻译：传统CELP型语音编码器/解码器的随机码矢量读取部分和随机码本分别被替换为根据输入种子的值输出不同矢量流的振荡器和用于存储多个种子的种子存储部分。这使得不必像固定码本（ROM）一样存储固定向量，从而显着地降低了存储器容量。

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