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公开(公告)号：US06757650B2
公开(公告)日：2004-06-29
申请号：US09855708
申请日：2001-05-16
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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公开(公告)号：US20070100613A1
公开(公告)日：2007-05-03
申请号：US11508852
申请日：2006-08-24
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。
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公开(公告)号：US06453288B1
公开(公告)日：2002-09-17
申请号：US09101186
申请日：1998-07-06
IPC分类号： G01L1908
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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公开(公告)号：US06330535B1
公开(公告)日：2001-12-11
申请号：US09440092
申请日：1999-11-15
IPC分类号： G10L1912
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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5.发明授权CELP speech decoder modifying an input vector with a fixed waveform to transform a waveform of the input vector 有权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
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。
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6.发明授权Excitation vector generator and a method for generating an excitation vector including a convolution system 有权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
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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公开(公告)号：US20050203736A1
公开(公告)日：2005-09-15
申请号：US11126171
申请日：2005-05-11
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。
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公开(公告)号：US07392179B2
公开(公告)日：2008-06-24
申请号：US10416532
申请日：2001-11-29
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。
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公开(公告)号：US06910008B1
公开(公告)日：2005-06-21
申请号：US09440093
申请日：1999-11-15
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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公开(公告)号：US06330534B1
公开(公告)日：2001-12-11
申请号：US09440087
申请日：1999-11-15
IPC分类号： G10L1917
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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