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公开(公告)号：US06772115B2
公开(公告)日：2004-08-03
申请号：US09843938
申请日：2001-04-30
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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公开(公告)号：US06345247B1
公开(公告)日：2002-02-05
申请号：US09440199
申请日：1999-11-15
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，以及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：US08086450B2
公开(公告)日：2011-12-27
申请号：US12870122
申请日：2010-08-27
IPC分类号： G10L19/00
CPC分类号： G10L19/135 , G10L19/12 , G10L2019/0007 , G10L2019/0013
摘要： A code excited linear prediction type speech coder, which includes a seed storage that stores seeds used as an initial state of oscillation, and an oscillator that generates different vector sequences in accordance with values of the seeds stored in the seed storage and outputs the vector sequences as excitation vectors. The speech coder also includes a linear predictive coding synthesis filter that receives, as input, the excitation vectors, which are the vector sequences generated in accordance with the values of the seeds, that synthesizes the excitation vectors, and that outputs a synthesized speech.
摘要翻译： 代码激励线性预测型语音编码器，其包括存储用作振荡的初始状态的种子的种子存储器，以及根据存储在种子存储器中的种子的值生成不同矢量序列的振荡器，并输出矢量序列 作为激励矢量。 语音编码器还包括线性预测编码合成滤波器，其接收作为合成激励矢量并且输出合成语音的根据种子的值生成的矢量序列作为输入的激励矢量。
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公开(公告)号：US07398205B2
公开(公告)日：2008-07-08
申请号：US11421932
申请日：2006-06-02
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 providing system that is capable of providing an input vector having at least one pulse, each pulse having a predetermined position and a respective polarity. A fixed waveform storage system is capable of storing at least one fixed waveform. An arranging system is capable of arranging the at least one fixed waveform in accordance with the position and the polarity of the at least one pulse.
摘要翻译： 激励矢量发生器包括输入矢量提供系统，其能够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。 固定波形存储系统能够存储至少一个固定波形。 排列系统能够根据至少一个脉冲的位置和极性排列至少一个固定波形。
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公开(公告)号：US07289952B2
公开(公告)日：2007-10-30
申请号：US09849398
申请日：2001-05-07
IPC分类号： G10L11/06
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：US06799160B2
公开(公告)日：2004-09-28
申请号：US09843877
申请日：2001-04-30
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：US06421639B1
公开(公告)日：2002-07-16
申请号：US09440083
申请日：1999-11-15
IPC分类号： G10L1908
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 pluralitty 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： 分别用常规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替换为根据输入种子的值输出不同矢量流的振荡器，以及用于存储多个种子的种子存储部分 使得不需要将固定向量存储在固定码本（ROM）中，从而显着降低存储器容量。
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18.发明授权Pitch cycle search range setting apparatus and pitch cycle search apparatus 有权间距周期搜索范围设定装置和音调周期搜索装置公开(公告)号：US07542898B2
公开(公告)日：2009-06-02
申请号：US11619667
申请日：2007-01-04
申请人： Kaoru Sato , Kazutoshi Yasunaga , Toshiyuki Morii
发明人： Kaoru Sato , Kazutoshi Yasunaga , Toshiyuki Morii
IPC分类号： G10L19/00
CPC分类号： G10L19/09 , G10L19/125 , G10L25/90 , G10L2019/0002
摘要： An apparatus sets a pitch cycle search object in pitch cycle search processing for searching for a pitch cycle included in a linear predictive residual on a per subframe basis. A pitch cycle indicator of the apparatus sequentially output spitch cycle candidates within a predetermined pitch cycle search range at integral accuracy. A memory stores an integral component of a pitch cycle selected in pitch cycle search processing of a previous subframe. An adaptive sound source vector generator sets, as the pitch cycle search object in pitch cycle search processing in a processing subframe section, a group of candidates comprising a group of integral-accuracy pitch cycle candidates output from the pitch cycle indicator and a group of fractional-accuracy pitch cycle search candidates that cover a pitch cycle near an integral component of the pitch cycle read from the previous subframe integral pitch cycle memory using fractional accuracy.
摘要翻译： 一种装置在音调周期搜索处理中设置音调周期搜索对象，用于在每个子帧的基础上搜索包括在线性预测残差中的音调周期。 设备的音调周期指示器以整体精度依次输出预定音调周期搜索范围内的音调周期候选。 存储器存储在先前子帧的音调周期搜索处理中选择的音调周期的积分分量。 自适应声源矢量发生器将处理子帧部分中的音调周期搜索处理中的音调周期搜索对象设置为包括从音调周期指示符输出的一组积分精度音调周期候选组和一组分数 - 精确的音调周期搜索候选，其使用分数精度覆盖从前一个子帧积分音调周期存储器读取的音调周期的整数分量附近的音调周期。
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公开(公告)号：US07110943B1
公开(公告)日：2006-09-19
申请号：US09462493
申请日：1999-06-08
IPC分类号： G10L19/12
CPC分类号： G10L19/12 , G10L2019/0005 , G10L2019/0014
摘要： First codebook 61 and second codebook 62 respectively have two subcodebooks, and in respective codebooks, addition sections 66 and 67 obtain respective excitation vectors by adding sub-excitation vectors fetched from respective two subcodebooks. Addition section 68 obtains an excitation sample by adding those excitation vectors. According to the aforementioned constitution, it is possible to store sub-excitation vectors with different characteristics in respective sub-codebooks. Therefore, it is possible to correspond to input signals with various characteristics, and achieve excellent sound qualities at the time of decoding.
摘要翻译： 第一码本61和第二码本62分别具有两个子码本，并且在相应码本中，相加部分66和67通过添加从相应的两个子码本中提取的子激励矢量来获得相应的激励矢量。 加法部分68通过加上这些激励矢量来获得激发样本。 根据上述结构，可以在各子码本中存储具有不同特性的子激励矢量。 因此，可以对应于具有各种特性的输入信号，并且在解码时获得优良的声音质量。
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公开(公告)号：US20060080091A1
公开(公告)日：2006-04-13
申请号：US11281386
申请日：2005-11-18
IPC分类号： G10L19/12
CPC分类号： G10L19/10 , G10L19/107 , G10L19/12
摘要： A code excited linear prediction speech decoder is provided. An adaptive codebook generates an adaptive code vector. A random codebook generates a random code vector. A synthesis filter receives a signal based on the adaptive code vector and the random code vector, and performs linear prediction coefficient synthesis on the signal. The random codebook includes a pulse vector provider that provides a pulse vector having a signed unit pulse, a comparator that compares a value of adaptive codebook gain with a preset threshold value, a selector that selects a dispersion pattern from a plurality of dispersion patterns stored in a memory in accordance with a result of the comparison, and a generator that generates the dispersed vector by convoluting the pulse vector and the selected dispersion pattern.
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