公开(公告)号：US20130173275A1

公开(公告)日：2013-07-04

申请号：US13822810

申请日：2011-09-14

申请人： Zongxian Liu ,  Kok Seng Chong ,  Masahiro Oshikiri

发明人： Zongxian Liu ,  Kok Seng Chong ,  Masahiro Oshikiri

IPC分类号： G10L19/06

CPC分类号： G10L19/06 ,  G10L19/0212 ,  G10L19/24

摘要： Provided is an audio encoding device that can suppress degradation of audio quality. Spectral coefficients of synthesized signal from CELP core layer are utilized to fulfill spectral gaps in error signal spectrum coefficients from a transform coding layer. By both spectral coefficients, decoded signal spectral coefficients are generated. The decoded signal spectral coefficients and the input signal spectral coefficients are divided into a plurality of sub bands. In each sub band, the energy of the input signal spectral coefficient corresponding to a zero decoded error signal spectral coefficient is calculated, and the energy of the decoded signal spectral coefficient corresponding to the zero decoding error signal spectral coefficient is calculated, and their energy ratio is calculated and is quantized and transmitted.

摘要翻译： 提供了可以抑制音频质量劣化的音频编码装置。 利用来自CELP核心层的合成信号的频谱系数来实现来自变换编码层的误差信号频谱系数中的频谱间隙。 通过两个频谱系数，生成解码信号频谱系数。 解码信号频谱系数和输入信号频谱系数被分成多个子频带。 在每个子带中，计算与零解码误差信号频谱系数相对应的输入信号频谱系数的能量，并且计算与零解码误差信号频谱系数对应的解码信号频谱系数的能量，并且其能量比 被计算并被量化和传输。

公开(公告)号：US20130103394A1

公开(公告)日：2013-04-25

申请号：US13807129

申请日：2011-07-06

申请人： Zongxian Liu ,  Masahiro Oshikiri

发明人： Zongxian Liu ,  Masahiro Oshikiri

IPC分类号： G10L19/12

CPC分类号： G10L19/12 ,  G10L19/0208 ,  G10L19/038

摘要： This invention introduces apparatus and methods to efficiently encode the quantization parameters of split multi-rate lattice vector quantization. In this invention, by doing spectral analysis on the split multi-rate vector quantized spectrum, the spectrum is split to null vectors region and non-null vectors region. For the null vectors region, instead of transmitting series of indication for null vectors, an indication of null vectors region and the quantized value of index of the ending vector in the null vectors region (or the number of the null vectors in the null vectors region) are transmitted. The indication of null vectors region can be designed in many ways, the only requirement is the indication should be distinguishable in the decoder side. The ending index or the number of null vectors can be quantized by an adaptively designed codebook. By applying of the invented method, some bits can be saved from the codebook indications.

摘要翻译： 本发明引入了对分割多速率格子矢量量化的量化参数进行有效编码的装置和方法。 在本发明中，通过对分割的多速率矢量量化频谱进行频谱分析，将频谱分解为零矢量区域和非空矢量区域。 对于空矢量区域，不是发送空矢量的一系列指示，空向量区域的指示和空向量区域中的结束向量的索引的量化值（或空向量区域中的零向量的数量） ）被传送。 空向量区域的指示可以以多种方式设计，唯一的要求是在解码器侧应该区分指示。 结束索引或空向量的数量可以通过自适应设计的码本进行量化。 通过应用本发明的方法，可以从码本指示中保存一些比特。

公开(公告)号：US09240192B2

公开(公告)日：2016-01-19

申请号：US13807129

申请日：2011-07-06

申请人： Zongxian Liu ,  Masahiro Oshikiri

发明人： Zongxian Liu ,  Masahiro Oshikiri

IPC分类号： G10L19/12 ,  G10L19/02 ,  G10L19/038

CPC分类号： G10L19/12 ,  G10L19/0208 ,  G10L19/038

摘要： This invention introduces apparatus and methods to efficiently encode the quantization parameters of split multi-rate lattice vector quantization. In this invention, by doing spectral analysis on the split multi-rate vector quantized spectrum, the spectrum is split to null vectors region and non-null vectors region. For the null vectors region, instead of transmitting series of indication for null vectors, an indication of null vectors region and the quantized value of index of the ending vector in the null vectors region (or the number of the null vectors in the null vectors region) are transmitted. The indication of null vectors region can be designed in many ways, the only requirement is the indication should be distinguishable in the decoder side. The ending index or the number of null vectors can be quantized by an adaptively designed codebook. By applying of the invented method, some bits can be saved from the codebook indications.

摘要翻译： 本发明引入了对分割多速率格子矢量量化的量化参数进行有效编码的装置和方法。 在本发明中，通过对分割的多速率矢量量化频谱进行频谱分析，将频谱分解为零矢量区域和非空矢量区域。 对于空矢量区域，不是发送空矢量的一系列指示，空向量区域的指示和空向量区域中的结束向量的索引的量化值（或空向量区域中的零向量的数量） ）被传送。 空向量区域的指示可以以多种方式设计，唯一的要求是在解码器侧应该区分指示。 结束索引或空向量的数量可以通过自适应设计的码本进行量化。 通过应用本发明的方法，可以从码本指示中保存一些比特。

公开(公告)号：US20140114651A1

公开(公告)日：2014-04-24

申请号：US14008732

申请日：2012-03-12

申请人： Zongxian Liu ,  Kok Seng Chong ,  Masahiro Oshikiri

发明人： Zongxian Liu ,  Kok Seng Chong ,  Masahiro Oshikiri

IPC分类号： G10L19/032

CPC分类号： G10L19/032 ,  G10L19/0017 ,  G10L19/0208 ,  G10L19/0212

摘要： In this invention, the design of the Huffman table can be done offline with a large input sequence database. The range of the quantization indices (or differential indices) for Huffman coding is identified. For each value of range, all the input signal which have the same range will be gathered and the probability distribution of each value of the quantization indices (or differential indices) within the range is calculated. For each value of range, one Huffman table is designed according to the probability. And in order to improve the bits efficiency of the Huffman coding, apparatus and methods to reduce the range of the quantization indices (or differential indices) are also introduced.

摘要翻译： 在本发明中，霍夫曼表的设计可以用大的输入序列数据库离线完成。 识别霍夫曼编码的量化指标（或差分指数）的范围。 对于每个范围值，将收集具有相同范围的所有输入信号，并计算该范围内的量化索引（或差分索引）的每个值的概率分布。 对于每个范围值，根据概率设计一个霍夫曼表。 并且为了提高霍夫曼编码的比特效率，还引入了缩小量化指标（或差分索引）的范围的装置和方法。

公开(公告)号：USD871640S1

公开(公告)日：2019-12-31

申请号：US29703013

申请日：2019-08-23

申请人： Luffy Zongxian Liu

设计人： Luffy Zongxian Liu

公开(公告)号：US09881625B2

公开(公告)日：2018-01-30

申请号：US14008732

申请日：2012-03-12

申请人： Zongxian Liu ,  Kok Seng Chong ,  Masahiro Oshikiri

发明人： Zongxian Liu ,  Kok Seng Chong ,  Masahiro Oshikiri

IPC分类号： G10L19/032 ,  G10L19/02 ,  G10L19/00

CPC分类号： G10L19/032 ,  G10L19/0017 ,  G10L19/0208 ,  G10L19/0212

摘要： In this invention, the design of the Huffman table can be done offline with a large input sequence database. The range of the quantization indices (or differential indices) for Huffman coding is identified. For each value of range, all the input signal which have the same range will be gathered and the probability distribution of each value of the quantization indices (or differential indices) within the range is calculated. For each value of range, one Huffman table is designed according to the probability. And in order to improve the bits efficiency of the Huffman coding, apparatus and methods to reduce the range of the quantization indices (or differential indices) are also introduced.

公开(公告)号：US20130030796A1

公开(公告)日：2013-01-31

申请号：US13521590

申请日：2011-01-13

申请人： Zongxian Liu

发明人： Zongxian Liu

IPC分类号： G10L21/00

CPC分类号： G10L19/0212 ,  G10L19/12 ,  G10L19/24

摘要： An audio encoding apparatus that allows a decoded signal exhibiting an excellent sound quality to be obtained on a decoding side. In the audio encoding apparatus (1000A), a time-frequency transform unit (1001) uses a time-frequency transform, such as a discrete Fourier transform (DFT) or a modified discrete cosine transform (MDCT), to transform a time domain signal (S(n)) to a frequency domain signal (spectrum factor) (S(f)). A psychoacoustic model analyzing unit (1002) performs a psychoacoustic model analysis of the frequency domain signal (S(f)), thereby obtaining a masking curve. An acoustic sense weighting unit (1003) estimates, based on the masking curve, an importance degree of acoustic sense, and determines and applies the weighting factors of respective spectrum factors to the respective spectrum factors. An encoding unit (1004) encodes the frequency domain signal (S(f)) as weighted in terms of the acoustic sense. A multiplexing unit (1005) multiplexes and transmits the encoded parameters.

摘要翻译： 一种能够在解码侧获得表现出优良音质的解码信号的音频编码装置。 在音频编码装置（1000A）中，时间 - 频率变换单元（1001）使用诸如离散傅立叶变换（DFT）或修正离散余弦变换（MDCT）的时间 - 频率变换来变换时域信号 （S（n））到频域信号（频谱因子）（S（f））。 心理声学模型分析单元（1002）对频域信号（S（f））进行心理声学模型分析，得到掩蔽曲线。 声学感测加权单元（1003）基于掩蔽曲线估计声学感测的重要程度，并且确定并将各个频谱因子的加权因子应用于各个频谱因子。 编码单元（1004）根据声学感觉对加权的频域信号（S（f））进行编码。 复用单元（1005）复用并发送编码参数。

公开(公告)号：USD966165S1

公开(公告)日：2022-10-11

申请号：US29841532

申请日：2022-06-07

申请人： Luffy Zongxian Liu

设计人： Luffy Zongxian Liu

公开(公告)号：USD880024S1

公开(公告)日：2020-03-31

申请号：US29628385

申请日：2017-12-04

申请人： Zongxian Liu

设计人： Zongxian Liu

公开(公告)号：US20120215526A1

公开(公告)日：2012-08-23

申请号：US13504272

申请日：2010-10-29

申请人： Zongxian Liu ,  Kok Seng Chong

发明人： Zongxian Liu ,  Kok Seng Chong

IPC分类号： G10L19/02

CPC分类号： G10L19/0212 ,  G10L19/10

摘要： An encoder whereby the bit efficiency of encoding can be improved, thereby improving the qualities of signals as decoded. In the encoder: a time-frequency converting unit (101) converts signals, which are to be encoded, to frequency domain signals; an adaptive spectrum formation encoding unit (102) determines an effective range in the frequency band of the frequency domain signals; and a pulse vector encoding unit (103) pulse vector encodes only the signal components within the effective range.

摘要翻译： 可以提高编码器的比特效率的编码器，从而提高被解码的信号的质量。 在编码器中：时间 - 频率转换单元（101）将要编码的信号转换为频域信号; 自适应频谱形成编码单元（102）确定频域信号的频带中的有效范围; 和脉冲矢量编码单元（103），脉冲矢量仅对有效范围内的信号分量进行编码。