公开(公告)号：US08724734B2

公开(公告)日：2014-05-13

申请号：US12812549

申请日：2009-01-23

申请人： Shigeaki Sasaki ,  Takeshi Mori ,  Hitoshi Ohmuro ,  Yusuke Hiwasaki ,  Akitoshi Kataoka ,  Kimitaka Tsutsumi

发明人： Shigeaki Sasaki ,  Takeshi Mori ,  Hitoshi Ohmuro ,  Yusuke Hiwasaki ,  Akitoshi Kataoka ,  Kimitaka Tsutsumi

IPC分类号： H04L27/00

CPC分类号： H03M7/3082 ,  G10L19/00 ,  H04N19/194 ,  H04N19/85 ,  H04N19/94

摘要： A coding method with a small error is provided. In the coding method of the present invention, a normalization value obtained from an input signal is corrected for an error calculated from an input and output in vector quantization and is then quantized. The coding method includes a normalization stage of normalizing the input signal in accordance with the normalization value of the input signal, calculated in each frame; a dividing stage of dividing the normalized frame into divided input signal sequences in accordance with a predetermined rule; a vector quantization stage of applying vector quantization to the divided input signal sequences to generate a vector quantization index; and a normalization value correction stage of correcting the normalization value of the input signal for the error obtained from the input and output in the vector quantization stage.

摘要翻译： 提供了一个小错误的编码方法。 在本发明的编码方法中，对于从矢量量化中的输入和输出计算的误差校正从输入信号获得的归一化值，然后对其进行量化。 编码方法包括根据在每帧中计算的输入信号的归一化值对输入信号进行归一化的归一化阶段; 根据预定规则将归一化帧划分成分割输入信号序列的分割级; 将矢量量化应用于分割输入信号序列以生成矢量量化索引的矢量量化级; 以及归一化值校正级，用于校正从矢量量化级中的输入和输出获得的误差的输入信号的归一化值。

公开(公告)号：US20110044405A1

公开(公告)日：2011-02-24

申请号：US12812549

申请日：2009-01-23

申请人： Shigeaki Sasaki ,  Takeshi Mori ,  Hitoshi Ohmuro ,  Yusuke Hiwasaki ,  Akitoshi Kataoka ,  Kimitaka Tsutsumi

发明人： Shigeaki Sasaki ,  Takeshi Mori ,  Hitoshi Ohmuro ,  Yusuke Hiwasaki ,  Akitoshi Kataoka ,  Kimitaka Tsutsumi

IPC分类号： H04L25/49

CPC分类号： H03M7/3082 ,  G10L19/00 ,  H04N19/194 ,  H04N19/85 ,  H04N19/94

摘要： A coding method with a small error is provided. In the coding method of the present invention, a normalization value obtained from an input signal is corrected for an error calculated from an input and output in vector quantization and is then quantized. The coding method includes a normalization stage of normalizing the input signal in accordance with the normalization value of the input signal, calculated in each frame; a dividing stage of dividing the normalized frame into divided input signal sequences in accordance with a predetermined rule; a vector quantization stage of applying vector quantization to the divided input signal sequences to generate a vector quantization index; and a normalization value correction stage of correcting the normalization value of the input signal for the error obtained from the input and output in the vector quantization stage.

摘要翻译： 提供了一个小错误的编码方法。 在本发明的编码方法中，对于从矢量量化中的输入和输出计算的误差校正从输入信号获得的归一化值，然后对其进行量化。 编码方法包括根据在每帧中计算的输入信号的归一化值对输入信号进行归一化的归一化阶段; 根据预定规则将归一化帧划分成分割输入信号序列的分割级; 将矢量量化应用于分割输入信号序列以生成矢量量化索引的矢量量化级; 以及归一化值校正级，用于校正从矢量量化级中的输入和输出获得的误差的输入信号的归一化值。

公开(公告)号：US20090103517A1

公开(公告)日：2009-04-23

申请号：US10584833

申请日：2005-05-10

申请人： Hitoshi Ohmuro ,  Takeshi Mori ,  Yusuke Hiwasaki ,  Akitoshi Kataoka

发明人： Hitoshi Ohmuro ,  Takeshi Mori ,  Yusuke Hiwasaki ,  Akitoshi Kataoka

IPC分类号： H04L12/66

CPC分类号： G10L19/005 ,  G10L19/167 ,  H04L65/602 ,  H04L65/607 ,  H04L65/80

摘要： When acoustic signal packets are communicated over an IP communication network, data corresponding to an acoustic signal (acoustic signal corresponding data) has been included and transmitted in a packet different from a packet containing the acoustic signal. However, conventionally, a packet in which the acoustic signal corresponding data is to be included must be determined beforehand and cannot dynamically be changed.According to the present invention, the amount of delay of acoustic signal corresponding data with respect to an acoustic signal is contained in an acoustic signal packet as delay amount control information. Furthermore, the conditions of a communication network are detected from the number of packets lost in a burst loss or jitters and the number of the packets to be stored and the amount of delay at the receiving end are thereby determined.

摘要翻译： 当通过IP通信网络传送声信号分组时，已经包含与声信号（声信号对应数据）对应的数据，并且在与包含声信号的分组不同的分组中发送。 然而，传统上，必须预先确定其中要包括声信号对应数据的分组，并且不能动态地改变。 根据本发明，相对于声信号的声信号对应数据的延迟量被包含在声信号分组中作为延迟量控制信息。 此外，从突发丢失或抖动中丢失的分组的数量和要存储的分组的数量和接收端的延迟量来确定通信网络的条件。

公开(公告)号：US20070177620A1

公开(公告)日：2007-08-02

申请号：US10591183

申请日：2005-05-25

申请人： Hitoshi Ohmuro ,  Takeshi Mori ,  Yusuke Hiwasaki ,  Akitoshi Kataoka

发明人： Hitoshi Ohmuro ,  Takeshi Mori ,  Yusuke Hiwasaki ,  Akitoshi Kataoka

IPC分类号： H04L12/56 ,  H04J3/06

CPC分类号： G10L19/005 ,  G10L21/04 ,  H04J3/0632

摘要： The present invention prevents a receiving buffer from becoming empty by: storing received packets in the receiving buffer; detecting the largest arrival delay jitter of the packets and the buffer level of the receiving buffer by a state detecting part; obtaining an optimum buffer level for the largest delay jitter using a predetermined table by a control part; determining, based on the detected buffer level and the optimum buffer level, the level of urgency about the need to adjust the buffer level; expanding or reducing the waveform of a decoded audio data stream of the current frame decoded from a packet read out of the receiving buffer by a consumption adjusting part to adjust the consumption of reproduction frames on the basis of the urgency level, the detected buffer level, and the optimum buffer level.

摘要翻译： 本发明通过以下操作来防止接收缓冲器变空：将接收到的分组存储在接收缓冲器中; 通过状态检测部分检测分组的最大到达延迟抖动和接收缓冲器的缓冲器电平; 通过控制部分使用预定表获得用于最大延迟抖动的最佳缓冲器电平; 基于检测到的缓冲器级别和最佳缓冲器级别确定关于需要调整缓冲器级别的紧急程度; 扩展或减少由消耗调整部分从接收缓冲器读出的分组中解码的当前帧解码音频数据流的波形，以根据紧急程度调整再现帧的消耗，检测缓冲器电平， 和最佳缓冲区级别。

公开(公告)号：US07711554B2

公开(公告)日：2010-05-04

申请号：US10580195

申请日：2005-05-10

申请人： Takeshi Mori ,  Hitoshi Ohmuro ,  Yusuke Hiwasaki ,  Akitoshi Kataoka

发明人： Takeshi Mori ,  Hitoshi Ohmuro ,  Yusuke Hiwasaki ,  Akitoshi Kataoka

IPC分类号： G10L19/14 ,  G10L21/02 ,  G10L21/04

CPC分类号： G10L19/005 ,  G10L19/167 ,  G10L25/69

摘要： Input speech is coded in an encoder (11), the coded speech is decoded in a decoder (12), compensatory speech which compensates the speech of the current frame is generated in a compensatory speech generating part (20) by using past decoded speech, the quality of the compensatory speech is evaluated by using the input speech and the compensatory speech and a duplication level is generated the value of which increases incrementally with decreasing speech quality evaluation value in a speech quality evaluating part (40), and as many identical packets as the number specified by the duplication level is generated for the coded speech in a packet generating part (15), and the packets are transmitted, thereby reducing the possibility that packet loss will occur at the receiving end.

摘要翻译： 输入语音在编码器（11）中编码，编码语音在解码器（12）中解码，补偿语音通过使用过去的解码语音在补偿语音产生部分（20）中产生当前帧的语音， 通过使用输入语音和补偿语音来评估补偿语音的质量，并且产生其语音质量评估部分（40）中随着语音质量评估值的降低逐渐增加的复制度，以及许多相同的分组 由于在分组生成部（15）中为编码语音生成由复制级别指定的数字，并且发送分组，从而降低了在接收端发生分组丢失的可能性。

公开(公告)号：US08320391B2

公开(公告)日：2012-11-27

申请号：US10584833

申请日：2005-05-10

申请人： Hitoshi Ohmuro ,  Takeshi Mori ,  Yusuke Hiwasaki ,  Akitoshi Kataoka

发明人： Hitoshi Ohmuro ,  Takeshi Mori ,  Yusuke Hiwasaki ,  Akitoshi Kataoka

IPC分类号： H04L12/56 ,  G10L19/12 ,  G10L19/00

CPC分类号： G10L19/005 ,  G10L19/167 ,  H04L65/602 ,  H04L65/607 ,  H04L65/80

摘要： When acoustic signal packets are communicated over an IP communication network, data corresponding to an acoustic signal (acoustic signal corresponding data) has been included and transmitted in a packet different from a packet containing the acoustic signal. However, conventionally, a packet in which the acoustic signal corresponding data is to be included must be determined beforehand and cannot dynamically be changed.According to the present invention, the amount of delay of acoustic signal corresponding data with respect to an acoustic signal is contained in an acoustic signal packet as delay amount control information. Furthermore, the conditions of a communication network are detected from the number of packets lost in a burst loss or jitters and the number of the packets to be stored and the amount of delay at the receiving end are thereby determined.

摘要翻译： 当通过IP通信网络传送声信号分组时，已经包含与声信号（声信号对应数据）对应的数据，并且在与包含声信号的分组不同的分组中发送。 然而，传统上，必须预先确定其中要包括声信号对应数据的分组，并且不能动态地改变。 根据本发明，相对于声信号的声信号对应数据的延迟量被包含在声信号分组中作为延迟量控制信息。 此外，从突发丢失或抖动中丢失的分组的数量和要存储的分组的数量和接收端的延迟量来确定通信网络的条件。

公开(公告)号：US07710982B2

公开(公告)日：2010-05-04

申请号：US10591183

申请日：2005-05-25

申请人： Hitoshi Ohmuro ,  Takeshi Mori ,  Yusuke Hiwasaki ,  Akitoshi Kataoka

发明人： Hitoshi Ohmuro ,  Takeshi Mori ,  Yusuke Hiwasaki ,  Akitoshi Kataoka

IPC分类号： H04L12/28

CPC分类号： G10L19/005 ,  G10L21/04 ,  H04J3/0632

摘要： The present invention prevents a receiving buffer from becoming empty by: storing received packets in the receiving buffer; detecting the largest arrival delay jitter of the packets and the buffer level of the receiving buffer by a state detecting part; obtaining an optimum buffer level for the largest delay jitter using a predetermined table by a control part; determining, based on the detected buffer level and the optimum buffer level, the level of urgency about the need to adjust the buffer level; expanding or reducing the waveform of a decoded audio data stream of the current frame decoded from a packet read out of the receiving buffer by a consumption adjusting part to adjust the consumption of reproduction frames on the basis of the urgency level, the detected buffer level, and the optimum buffer level.

摘要翻译： 本发明通过以下方法防止接收缓冲器变空：将接收到的数据包存储在接收缓冲器中; 通过状态检测部分检测分组的最大到达延迟抖动和接收缓冲器的缓冲器电平; 通过控制部分使用预定表获得用于最大延迟抖动的最佳缓冲器电平; 基于检测到的缓冲器级别和最佳缓冲器级别确定关于需要调整缓冲器级别的紧急程度; 扩展或减少由消耗调整部分从接收缓冲器读出的分组中解码的当前帧解码音频数据流的波形，以根据紧急程度调整再现帧的消耗，检测缓冲器电平， 和最佳缓冲区级别。

公开(公告)号：US20070150262A1

公开(公告)日：2007-06-28

申请号：US10580195

申请日：2005-05-10

申请人： Takeshi Mori ,  Hitoshi Ohmuro ,  Yusuke Hiwasaki ,  Akitoshi Kataoka

发明人： Takeshi Mori ,  Hitoshi Ohmuro ,  Yusuke Hiwasaki ,  Akitoshi Kataoka

IPC分类号： G10L19/00

CPC分类号： G10L19/005 ,  G10L19/167 ,  G10L25/69

摘要： Input speech is coded in an encoder (11), the coded speech is decoded in a decoder (12), compensatory speech which compensates the speech of the current frame is generated in a compensatory speech generating part (20) by using past decoded speech, the quality of the compensatory speech is evaluated by using the input speech and the compensatory speech and a duplication level is generated the value of which increases incrementally with decreasing speech quality evaluation value in a speech quality evaluating part (40), and as many identical packets as the number specified by the duplication level is generated for the coded speech in a packet generating part (15), and the packets are transmitted, thereby reducing the possibility that packet loss will occur at the receiving end.

摘要翻译： 输入语音在编码器（11）中编码，编码语音在解码器（12）中解码，补偿语音通过使用过去的解码语音在补偿语音产生部分（20）中产生当前帧的语音， 通过使用输入语音和补偿语音来评估补偿语音的质量，并且产生其语音质量评估部分（40）中随着语音质量评估值的降低逐渐增加的复制度，以及许多相同的分组 由于在分组生成部（15）中为编码语音生成由复制级别指定的数字，并且发送分组，从而降低了在接收端发生分组丢失的可能性。

公开(公告)号：US10269363B2

公开(公告)日：2019-04-23

申请号：US13583427

申请日：2011-02-07

申请人： Masahiro Fukui ,  Shigeaki Sasaki ,  Yusuke Hiwasaki ,  Shoichi Koyama ,  Kimitaka Tsutsumi

发明人： Masahiro Fukui ,  Shigeaki Sasaki ,  Yusuke Hiwasaki ,  Shoichi Koyama ,  Kimitaka Tsutsumi

IPC分类号： G10L19/038

摘要： A normalization value calculator 12 calculates a normalization value that is representative of a predetermined number of input samples. A normalization value quantizer 13 quantizes the normalization value to obtain a quantized normalization value and a normalization-value quantization index corresponding to the quantized normalization value. An quantization-candidate calculator 14 subtracts a value corresponding to the quantized normalization value from a value corresponding to the magnitude of each of the samples to obtain a difference value and, when the difference value is positive and the value of each of the samples is positive, sets the difference value as an quantization candidate corresponding to the sample. When the difference value is positive and the value of each of the samples is negative, the quantization-candidate calculator 14 reverses the sign of the difference value and setting the sign-reversed value as an quantization candidate corresponding to the sample. When the difference value is not positive, the quantization-candidate calculator 14 sets 0 as an quantization candidate corresponding to the sample. A vector quantizer 15 jointly vector-quantizes a plurality of quantization candidates corresponding to a plurality of samples to obtain a vector quantization index.

公开(公告)号：US20130034168A1

公开(公告)日：2013-02-07

申请号：US13583427

申请日：2011-02-07

申请人： Masahiro Fukui ,  Shigeaki Sasaki ,  Yusuke Hiwasaki ,  Shoichi Koyama ,  Kimitaka Tsutsumi

发明人： Masahiro Fukui ,  Shigeaki Sasaki ,  Yusuke Hiwasaki ,  Shoichi Koyama ,  Kimitaka Tsutsumi

IPC分类号： H04N7/28

CPC分类号： G10L19/038

摘要： A normalization value calculator 12 calculates a normalization value that is representative of a predetermined number of input samples. A normalization value quantizer 13 quantizes the normalization value to obtain a quantized normalization value and a normalization-value quantization index corresponding to the quantized normalization value. An quantization-candidate calculator 14 subtracts a value corresponding to the quantized normalization value from a value corresponding to the magnitude of each of the samples to obtain a difference value and, when the difference value is positive and the value of each of the samples is positive, sets the difference value as an quantization candidate corresponding to the sample. When the difference value is positive and the value of each of the samples is negative, the quantization-candidate calculator 14 reverses the sign of the difference value and setting the sign-reversed value as an quantization candidate corresponding to the sample. When the difference value is not positive, the quantization-candidate calculator 14 sets 0 as an quantization candidate corresponding to the sample. A vector quantizer 15 jointly vector-quantizes a plurality of quantization candidates corresponding to a plurality of samples to obtain a vector quantization index.

摘要翻译： 归一化值计算器12计算表示预定数量的输入样本的归一化值。 归一化值量化器13对归一化值进行量化以获得对应于量化标准化值的量化标准化值和归一化值量化指标。 量化候选计算器14从对应于每个样本的幅度的值中减去与量化归一化值相对应的值，以获得差值，并且当差值为正时，每个样本的值为正 将差值设置为与样本相对应的量化候选。 当差值为正，并且每个样本的值为负时，量化候选计算器14反转差值的符号，并将符号反转值设置为与样本相对应的量化候选。 当差值不为正时，量化候选计算器14将0设置为与样本相对应的量化候选。 向量量化器15对与多个样本相对应的多个量化候选进行联合矢量量化，以获得矢量量化索引。