公开(公告)号：US07200561B2

公开(公告)日：2007-04-03

申请号：US10226138

申请日：2002-08-23

申请人： Takehiro Moriya ,  Akio Jin ,  Takeshi Mori ,  Kazunaga Ikeda

发明人： Takehiro Moriya ,  Akio Jin ,  Takeshi Mori ,  Kazunaga Ikeda

IPC分类号： G10L21/00

CPC分类号： H03M7/30 ,  G10L19/0017 ,  H04N19/895

摘要： At the coder side, bits of samples of each frame of an input digital signal are concatenated every digit common to the samples across each frame to generate equi-order bit sequences, which are output as packets. At the decoding side, the input equi-order sequences are arranged inversely to their arrangement at the coder side to reconstruct sample sequences. When a packet dropout occurs, a missing information compensating part 430 correct the reconstructed sample sequences in a manner to reduce an error between the spectral envelope of the reconstructed sample sequence concerned and a known spectral envelope.

摘要翻译： 在编码器侧，输入数字信号的每一帧的采样位被连接在每个帧上的采样公共的每个数字上，以产生作为分组输出的等位比特序列。 在解码侧，输入的等序序列与编码器侧的排列相反地排列，以重建采样序列。 当发生分组丢失时，丢失信息补偿部分430以减少相关重建样本序列的频谱包络和已知频谱包络之间的误差的方式校正重建的采样序列。

公开(公告)号：US07599835B2

公开(公告)日：2009-10-06

申请号：US10505485

申请日：2003-03-10

申请人： Takehiro Moriya ,  Akio Jin ,  Kazunaga Ikeda ,  Takeshi Mori

发明人： Takehiro Moriya ,  Akio Jin ,  Kazunaga Ikeda ,  Takeshi Mori

IPC分类号： G10L21/02

CPC分类号： G10L19/0017 ,  G10L19/00

摘要： A down sampler 13 down samples a digital signal in the sampling frequency thereof from 96 kHz to 48 kHz on a frame-by-frame basis. The converted signal is compression encoded and output as a main code Im. An up sampler 16 converts a partial signal corresponding to the main code Im to a signal having the original sampling frequency 96 kHz, for example. An error signal between the up sampled signal and an input digital signal is generated. An array converting and encoding unit 18 array converts bits of sample chains of the error signal, thereby outputting an error code Pe. On a decoding side, a high fidelity reproduced signal is obtained based on the main code Im and the error code Pe, or a reproduced signal is obtained based on the main code Im only.

摘要翻译： 下采样器13在逐帧的基础上将其采样频率中的数字信号从96kHz下降到48kHz。 转换的信号被压缩编码并作为主要代码Im输出。 例如，上采样器16将对应于主码Im的部分信号转换为具有原始采样频率96kHz的信号。 产生上采样信号和输入数字信号之间的误差信号。 阵列转换和编码单元18对误差信号的采样链的位进行转换，从而输出错误代码Pe。 在解码侧，基于主码Im和错误代码Pe获得高保真再现信号，或者仅基于主码Im获得再现信号。

公开(公告)号：US08311815B2

公开(公告)日：2012-11-13

申请号：US12502797

申请日：2009-07-14

申请人： Takehiro Moriya ,  Akio Jin ,  Kazunaga Ikeda ,  Takeshi Mori

发明人： Takehiro Moriya ,  Akio Jin ,  Kazunaga Ikeda ,  Takeshi Mori

IPC分类号： G10L21/02

CPC分类号： G10L19/0017 ,  G10L19/00

摘要： A down sampler 13 down samples a digital signal in the sampling frequency thereof from 96 kHz to 48 kHz on a frame-by-frame basis. The converted signal is compression encoded and output as a main code Im. An up sampler 16 converts a partial signal corresponding to the main code Im to a signal having the original sampling frequency 96 kHz, for example. An error signal between the up sampled signal and an input digital signal is generated. An array converting and encoding unit 18 array converts bits of sample chains of the error signal, thereby outputting an error code Pe. On a decoding side, a high fidelity reproduced signal is obtained based on the main code Im and the error code Pe, or a reproduced signal is obtained based on the main code Im only.

摘要翻译： 下采样器13在逐帧的基础上将其采样频率中的数字信号从96kHz下降到48kHz。 转换的信号被压缩编码并作为主要代码Im输出。 例如，上采样器16将对应于主码Im的部分信号转换为具有原始采样频率96kHz的信号。 产生上采样信号和输入数字信号之间的误差信号。 阵列转换和编码单元18对误差信号的采样链的位进行转换，从而输出错误代码Pe。 在解码侧，基于主码Im和错误代码Pe获得高保真再现信号，或者仅基于主码Im获得再现信号。

公开(公告)号：US20090279598A1

公开(公告)日：2009-11-12

申请号：US12502797

申请日：2009-07-14

申请人： Takehiro Moriya ,  Akio Jin ,  Kazunaga Ikeda ,  Takeshi Mori

发明人： Takehiro Moriya ,  Akio Jin ,  Kazunaga Ikeda ,  Takeshi Mori

IPC分类号： H04B1/66

CPC分类号： G10L19/0017 ,  G10L19/00

摘要： A down sampler 13 down samples a digital signal in the sampling frequency thereof from 96 kHz to 48 kHz on a frame-by-frame basis. The converted signal is compression encoded and output as a main code Im. An up sampler 16 converts a partial signal corresponding to the main code Im to a signal having the original sampling frequency 96 kHz, for example. An error signal between the up sampled signal and an input digital signal is generated. An array converting and encoding unit 18 array converts bits of sample chains of the error signal, thereby outputting an error code Pe. On a decoding side, a high fidelity reproduced signal is obtained based on the main code Im and the error code Pe, or a reproduced signal is obtained based on the main code Im only.

摘要翻译： 下采样器13在逐帧的基础上将其采样频率中的数字信号从96kHz下降到48kHz。 转换的信号被压缩编码并作为主要代码Im输出。 例如，上采样器16将对应于主码Im的部分信号转换为具有原始采样频率96kHz的信号。 产生上采样信号和输入数字信号之间的误差信号。 阵列转换和编码单元18对误差信号的采样链的位进行转换，从而输出错误代码Pe。 在解码侧，基于主码Im和错误代码Pe获得高保真再现信号，或者仅基于主码Im获得再现信号。

公开(公告)号：US07337112B2

公开(公告)日：2008-02-26

申请号：US11610921

申请日：2006-12-14

申请人： Takehiro Moriya ,  Akio Jin ,  Takeshi Mori ,  Kazunaga Ikeda

发明人： Takehiro Moriya ,  Akio Jin ,  Takeshi Mori ,  Kazunaga Ikeda

IPC分类号： G10L21/02 ,  G10L11/04 ,  G10L21/00

CPC分类号： H03M7/30 ,  G10L19/0017 ,  H04N19/895

摘要： At the coder side, bits of samples of each frame of an input digital signal are concatenated every digit common to the samples across each frame to generate equi-order bit sequences, which are output as packets. At the decoding side, the input equi-order sequences are arranged inversely to their arrangement at the coder side to reconstruct sample sequences. When a packet dropout occurs, a missing information compensating part 430 correct the reconstructed sample sequences in a manner to reduce an error between the spectral envelope of the reconstructed sample sequence concerned and a known spectral envelope.

摘要翻译： 在编码器侧，输入数字信号的每一帧的采样位被连接在每个帧上的采样公共的每个数字上，以产生作为分组输出的等位比特序列。 在解码侧，输入的等序序列与编码器侧的排列相反地排列，以重建采样序列。 当发生分组丢失时，丢失信息补偿部分430以减少相关重建样本序列的频谱包络和已知频谱包络之间的误差的方式校正重建的采样序列。

公开(公告)号：US20070083362A1

公开(公告)日：2007-04-12

申请号：US11610921

申请日：2006-12-14

申请人： Takehiro MORIYA ,  Akio Jin ,  Takeshi Mori ,  Kazunaga Ikeda

发明人： Takehiro MORIYA ,  Akio Jin ,  Takeshi Mori ,  Kazunaga Ikeda

IPC分类号： G10L19/00

CPC分类号： H03M7/30 ,  G10L19/0017 ,  H04N19/895

摘要： At the coder side, bits of samples of each frame of an input digital signal are concatenated every digit common to the samples across each frame to generate equi-order bit sequences, which are output as packets. At the decoding side, the input equi-order sequences are arranged inversely to their arrangement at the coder side to reconstruct sample sequences. When a packet dropout occurs, a missing information compensating part 430 correct the reconstructed sample sequences in a manner to reduce an error between the spectral envelope of the reconstructed sample sequence concerned and a known spectral envelope.

摘要翻译： 在编码器侧，输入数字信号的每一帧的采样位被连接在每个帧上的采样公共的每个数字上，以产生作为分组输出的等位比特序列。 在解码侧，输入的等序序列与编码器侧的排列相反地排列，以重建采样序列。 当发生分组丢失时，丢失信息补偿部分430以减少相关重建样本序列的频谱包络和已知频谱包络之间的误差的方式校正重建的采样序列。

公开(公告)号：US20050091051A1

公开(公告)日：2005-04-28

申请号：US10505485

申请日：2003-03-10

申请人： Takehiro Moriya ,  Akio Jin ,  Kazunaga Ikeda ,  Takeshi Mori

发明人： Takehiro Moriya ,  Akio Jin ,  Kazunaga Ikeda ,  Takeshi Mori

IPC分类号： G10L19/00 ,  G10L19/02

CPC分类号： G10L19/0017 ,  G10L19/00

摘要： A down sampler 13 down samples a digital signal in the sampling frequency thereof from 96 kHz to 48 kHz on a frame-by-frame basis. The converted signal is compression encoded and output as a main code Im. An up sampler 16 converts a partial signal corresponding to the main code Im to a signal having the original sampling frequency 96 kHz, for example. An error signal between the up sampled signal and an input digital signal is generated. An array converting and encoding unit 18 array converts bits of sample chains of the error signal, thereby outputting an error code Pe. On a decoding side, a high fidelity reproduced signal is obtained based on the main code Im and the error code Pe, or a reproduced signal is obtained based on the main code Im only.

摘要翻译： 下采样器13在逐帧的基础上将其采样频率中的数字信号从96kHz下降到48kHz。 转换的信号被压缩编码并作为主要代码Im输出。 例如，上采样器16将对应于主码Im的部分信号转换为具有原始采样频率96kHz的信号。 产生上采样信号和输入数字信号之间的误差信号。 阵列转换和编码单元18对误差信号的采样链的位进行转换，从而输出错误代码Pe。 在解码侧，基于主码Im和错误代码Pe获得高保真再现信号，或者仅基于主码Im获得再现信号。

公开(公告)号：US06345246B1

公开(公告)日：2002-02-05

申请号：US09018042

申请日：1998-02-03

申请人： Takehiro Moriya ,  Takeshi Mori ,  Kazunaga Ikeda ,  Naoki Iwakami

发明人： Takehiro Moriya ,  Takeshi Mori ,  Kazunaga Ikeda ,  Naoki Iwakami

IPC分类号： G10L1904

CPC分类号： G10L19/008

摘要： In multichannel acoustic signal coding and decoding, left- and right-channel signals are alternately interleaved for each sample to generate a one-dimensional signal sample sequence. The one-dimensional signal sample sequence is subjected to coding based on correlation. In coding, the left- and right-channel signals may preferably be interleaved after reducing an imbalance in power between input channels. In such an instance, a power imbalance is introduced between the decoded left- and right-channel signal sample sequences

摘要翻译： 在多声道声信号编码和解码中，左和右声道信号被交替地交替地用于每个采样以产生一维信号采样序列。 一维信号采样序列经过相关的编码。 在编码中，在减少输入通道之间的功率不平衡的情况下，左通道信号和右声道信号可优选地交错。 在这种情况下，在解码的左声道和右声道信号样本序列之间引入功率不平衡

公开(公告)号：US06658382B1

公开(公告)日：2003-12-02

申请号：US09534297

申请日：2000-03-23

申请人： Naoki Iwakami ,  Takehiro Moriya ,  Akio Jin ,  Kazuaki Chikira ,  Takeshi Mori

发明人： Naoki Iwakami ,  Takehiro Moriya ,  Akio Jin ,  Kazuaki Chikira ,  Takeshi Mori

IPC分类号： G10L1902

CPC分类号： G10L19/0212

摘要： An input signal is time-frequency transformed, then the frequency-domain coefficients are divided into coefficient segments of about 100 Hz width to generate a sequence of coefficient segments, and the sequence of coefficient segments is split into subbands each consisting of plural coefficient segments. A threshold value is determined based on the intensity of each coefficient segment in each subband. The intensity of each coefficient segment is compared with the threshold value, and the coefficient segments are classified into low- and high-intensity groups. The coefficient segments are quantized for each group, or they are flattened respectively and then quantized through recombination.

摘要翻译： 输入信号被时间频率变换，频域系数被划分为大约100Hz宽度的系数段，以产生一系列系数段，并将系数段序列分成各个由多个系数段组成的子带。 基于每个子带中的每个系数段的强度来确定阈值。 将每个系数段的强度与阈值进行比较，将系数段分为低强度组和高强度组。 每个组对系数段进行量化，或者分别对其进行平坦化，然后通过重组进行量化。

公开(公告)号：US06549147B1

公开(公告)日：2003-04-15

申请号：US09572789

申请日：2000-05-17

申请人： Takehiro Moriya ,  Naoki Iwakami ,  Akio Jin ,  Takeshi Mori ,  Kazuaki Chikira

发明人： Takehiro Moriya ,  Naoki Iwakami ,  Akio Jin ,  Takeshi Mori ,  Kazuaki Chikira

IPC分类号： H03M700

CPC分类号： H04N19/00 ,  H03M7/30 ,  H04N19/90

摘要： An object of the invention is to provide a method for compressing digital input signals at high compression efficiency and reproducing the input data perfectly. The method includes the steps of: converting a digital input signal in each frame to bitstreams according to a sign-magnitude format; deblocking the bitstreams into individual bits; joining each bit in a time sequence while retaining an identical chronological order of bits in all the frames; and reversibly encoding each bitstream obtained by joining the bits. And, the reversible decoding method includes the steps of: reversibly decoding a reversible code sequence in each frame; deblocking the bitstreams obtained by reversible decoding into individual bits; joining each bit in a time sequence while retaining an identical chronological order of bits in all the frames; and joining successive frames obtained by joining the bits.

摘要翻译： 本发明的目的是提供一种以高压缩效率压缩数字输入信号并且完美地再现输入数据的方法。 该方法包括以下步骤：根据符号幅度格式将每帧中的数字输入信号转换为比特流; 将比特流解块为单独的比特; 以时间顺序连接每个比特，同时保留所有帧中相同的时间顺序的比特; 并且可逆地编码通过连接比特获得的每个比特流。 并且，可逆解码方法包括以下步骤：对每帧中的可逆码序列进行可逆解码; 将通过可逆解码获得的比特流解块为单独的比特; 以时间顺序连接每个比特，同时保留所有帧中相同的时间顺序的比特; 并连接通过连接比特获得的连续帧。