专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US09009037B2 Encoding device, decoding device, and methods therefor 有权
标题翻译：编码装置，解码装置及其方法
公开(公告)号：US09009037B2
公开(公告)日：2015-04-14
申请号：US13501389
申请日：2010-10-13
申请人： Tomofumi Yamanashi , Toshiyuki Morii
发明人： Tomofumi Yamanashi , Toshiyuki Morii
IPC分类号： G10L19/00 , G10L21/00 , G10L19/24 , G10L19/02
CPC分类号： G10L19/24 , G10L19/0204 , G10L19/0212
摘要： Disclosed is an encoding device that improves the quality of a decoded signal in a hierarchical coding (scalable coding) method, wherein a band to be quantized is selected for every level (layer). The encoding device (101) is equipped with a second layer encoding unit (205) that selects a first band to be quantized of a first input signal from among a plurality of sub-bands, and that generates second layer encoding information containing first band information of said band; a second layer decoding unit (206) that generates a first decoded signal using the second layer encoding information; an addition unit (207) that generates a second input signal using the first input signal and the first decoded signal; and a third layer encoding unit (208) that selects a second band to be quantized of the second input signal using the first decoded signal, and that generates third layer encoding information.
摘要翻译：公开了一种以分级编码（可分级编码）方式提高解码信号的质量的编码装置，其中为每个级别（层）选择要被量化的频带。编码装置（101）配备有从多个子带中选择要量化的第一输入信号的第一频带的第二层编码单元（205），并且生成包含第一频带信息的第二层编码信息的乐队; 第二层解码单元，其使用所述第二层编码信息生成第一解码信号; 加法单元，用于使用第一输入信号和第一解码信号产生第二输入信号; 以及第三层编码单元，其使用第一解码信号来选择要量化的第二输入信号的第二频带，并且生成第三层编码信息。

2. 发明授权

US08620648B2 Audio encoding device and audio encoding method 有权
标题翻译：音频编码装置和音频编码方法
公开(公告)号：US08620648B2
公开(公告)日：2013-12-31
申请号：US12670777
申请日：2008-07-25
申请人： Toshiyuki Morii
发明人： Toshiyuki Morii
IPC分类号： G10L19/00
CPC分类号： G10L19/107 , G10L2019/0013
摘要： An audio encoding device which can improve encoding performance while performing division search on an algebraic codebook in an audio encoding. In a distortion minimizing unit (112) of a CELP encoding device: a maximum correlation value calculation unit (221) calculates a correlation value by using each pulse and a target signal in each candidate position for four pulses constituting the fixed codebook so as to acquire a maximum value of the correlation value for each pulse and calculates a maximum correlation value by using the maximum value of the correlation value; a sorting unit (222) divides the four pulses into two subsets each having two pulses; and a search unit (224) performs a division search on the fixed codebook and acquires a code indicating the positions and polarities of the four pulses where the encoding distortion is minimum.
摘要翻译：一种音频编码装置，其可以在对音频编码中的代数码本执行划分搜索时提高编码性能。在CELP编码装置的失真最小化单元（112）中：最大相关值计算单元（221）通过使用构成固定码本的四个脉冲的每个候选位置中的每个脉冲和目标信号来计算相关值，以便获得每个脉冲的相关值的最大值，并通过使用相关值的最大值来计算最大相关值; 分类单元（222）将四个脉冲分成具有两个脉冲的两个子集; 搜索单元（224）对固定码本执行划分搜索并且获取指示编码失真最小的四个脉冲的位置和极性的代码。

3. 发明授权

US08543392B2 Encoding device, decoding device, and method thereof for specifying a band of a great error 有权
公开(公告)号：US08543392B2
公开(公告)日：2013-09-24
申请号：US12528869
申请日：2008-02-29
申请人： Masahiro Oshikiri , Tomofumi Yamanashi , Toshiyuki Morii
发明人： Masahiro Oshikiri , Tomofumi Yamanashi , Toshiyuki Morii
IPC分类号： G10L19/00
CPC分类号： G10L19/00 , G10L19/005 , G10L19/0204 , G10L19/0208 , G10L19/0212 , G10L19/24
摘要： Disclosed is an encoding device which can accurately specify a band having a large error among all the bands by using a small calculation amount. A first position identifier uses a first layer error conversion coefficient indicating an error of a decoding signal for an input signal so as to search for a band having a large error in a relatively wide bandwidth in all the bands of the input signal and generates first position information indicating the identified band. A second position identifier searches for a target frequency band having a large error in a relatively narrow bandwidth in the band identified by the first position identifier and generates second position information indicating the identified target frequency band. An encoder encodes a first layer decoding error conversion coefficient contained in the target frequency band.

4. 发明申请

US20130173263A1 QUANTIZATION DEVICE AND QUANTIZATION METHOD 有权
标题翻译：量化设备和量化方法
公开(公告)号：US20130173263A1
公开(公告)日：2013-07-04
申请号：US13821577
申请日：2011-09-16
申请人： Toshiyuki Morii
发明人： Toshiyuki Morii
IPC分类号： G10L19/00
CPC分类号： G10L19/00 , G10L19/06 , G10L19/07 , G10L2019/0005 , G10L2019/0006 , G10L2019/0013 , G10L2019/0016 , H03M7/3082 , H04N19/94
摘要： Provided are a quantization device and quantization method which reduce coding distortion with a small degree of calculation, and achieve adequate coding performance thereby. A multistage vector quantization unit (102) treats a number of candidates N which are designated prior to operation in the first-stage vector quantization unit (201-1), decrements the number of candidates by one beginning with the second-stage vector quantization unit (201-2-201-J) and continuing with each stage thereafter, and, if the number of candidates is three or less, assesses the quantization distortion at each such stage, treating the number of candidates at the following stage as a predetermined value P if the quantization distortion is greater than a prescribed threshold, and treating the number of candidates at the following stage as a value Q that is less than the predetermined value P if the quantization distortion is less than or equal to the predetermined threshold.
摘要翻译：提供了一种量化装置和量化方法，其以较小的计算度减少编码失真，从而实现适当的编码性能。多级矢量量化单元（102）将在第一级矢量量化单元（201-1）中操作之前指定的候选N的数量对待，将第二级矢量量化单元（201-2-201-J），并且其后继续进行每个阶段，如果候选人数为三个或更少，则评估每个这样的阶段的量化失真，将下一阶段的候选人的数量作为预定值 P，如果量化失真小于或等于预定阈值，则将下一级的候选数量作为小于预定值P的值Q进行处理。

5. 发明授权

US08473288B2 Quantizer, encoder, and the methods thereof 有权
标题翻译：量化器，编码器及其方法
公开(公告)号：US08473288B2
公开(公告)日：2013-06-25
申请号：US12990697
申请日：2009-06-18
申请人： Toshiyuki Morii , Hiroyuki Ehara , Koji Yoshida
发明人： Toshiyuki Morii , Hiroyuki Ehara , Koji Yoshida
IPC分类号： G10L19/00
CPC分类号： G10L19/008 , G10L25/27
摘要： Disclosed are a quantizer, encoder, and the methods thereof, wherein the computational load is reduced when the values related to the transform coefficients of the principal component analysis transform are quantized when a principal component analysis transform is applied to code stereo. A quantizer includes a power correlation calculator which calculates the power of the left channel signal, the power of the right channel signal, and the correlation between the left channel signal and the right channel signal; an intermediate value calculator which calculates the intermediate value which is the difference between left channel signal the power and the right channel signal power; a codebook which holds a plurality of sets of the coefficients related to the transform coefficients of the principal component analysis transform and the code; and a quantizer which calculates the sum of the first multiplication result obtained by multiplying the coefficient by the correlation value and the second multiplication result obtained by multiplying the coefficient by the intermediate value as the cost function E, selects the coefficients where the cost function E becomes the maximum, and fetches the code related to the selected coefficients as the quantized code.
摘要翻译：公开了一种量化器，编码器及其方法，其中当将主分量分析变换应用于代码立体声时，当与主成分分析变换的变换系数相关的值被量化时，计算负荷减小。量化器包括功率相关计算器，其计算左声道信号的功率，右声道信号的功率，以及左声道信号和右声道信号之间的相关性; 中间值计算器，其计算作为左声道信号的功率和右声道信号功率之间的差的中间值; 码本，其保存与主成分分析变换和代码的变换系数相关的多个系数集合; 以及量化器，其计算通过将系数乘以相关值而获得的第一相乘结果与通过将系数乘以中间值而获得的第二乘法结果作为成本函数E的和，选择成本函数E变为最大值，并且将与所选择的系数相关的代码作为量化代码获取。

6. 发明授权

US08352253B2 Speech coder and speech decoder 有权
标题翻译：语音编码器和语音解码器
公开(公告)号：US08352253B2
公开(公告)日：2013-01-08
申请号：US12783974
申请日：2010-05-20
申请人： Kazutoshi Yasunaga , Toshiyuki Morii
发明人： Kazutoshi Yasunaga , Toshiyuki Morii
IPC分类号： G10L19/12 , G10L19/00
CPC分类号： G10L19/10 , G10L19/107 , G10L19/12
摘要： A vector quantization apparatus performs coding of a linear predictive coding coefficient by multi-stage vector quantization. A first codebook and a second codebook store code vectors, and a storing section stores scalars. A first quantizing section extracts a first code vector stored in the first codebook and performs first stage quantization for quantizing a target vector using the first code vector. A second quantizing section extracts a second code vector stored in the second codebook, calculates a third code vector by multiplying the second code vector and one of the scalars stored in the storing section, performs distance calculation using the target vector, the first code vector and the third code vector, and performs second stage quantization for quantizing the target vector using a result of the distance calculation. Each scalar stored in the storing section is associated with at least one of the vectors stored in the first codebook.
摘要翻译：矢量量化装置通过多级矢量量化来执行线性预测编码系数的编码。第一码本和第二码本存储码矢量，存储部分存储标量。第一量化部分提取存储在第一码本中的第一码矢量，并使用第一码矢量进行用于量化目标矢量的第一级量化。第二量化部分提取存储在第二码本中的第二码矢量，通过将第二码矢量与存储在存储部分中的标量之一相乘来计算第三码矢量，使用目标矢量进行距离计算，第一码矢量和第三码矢量，并且使用距离计算的结果来执行用于量化目标矢量的第二级量化。存储在存储部分中的每个标量与存储在第一码本中的至少一个矢量相关联。

7. 发明授权

US08239191B2 Speech encoding apparatus and speech encoding method 有权
标题翻译：语音编码装置和语音编码方法
公开(公告)号：US08239191B2
公开(公告)日：2012-08-07
申请号：US12440661
申请日：2007-09-14
申请人： Hiroyuki Ehara , Toshiyuki Morii , Koji Yoshida
发明人： Hiroyuki Ehara , Toshiyuki Morii , Koji Yoshida
IPC分类号： G10L19/00 , G10L21/02
CPC分类号： G10L19/265 , G10L19/08
摘要： Disclosed is an audio encoding device capable of adjusting a spectrum inclination of a quantized noise without changing the Formant weight. The device includes: an HPF (131) which extracts a high-frequency component of the frequency region from an input audio signal; a high-frequency energy level calculation unit (132) which calculates an energy level of the high-frequency component in a frame unit; an LPF (133) which extracts a low-frequency component of the frequency region from the input audio signal; a low-energy level calculation unit (134) which calculates an energy level of a low-frequency component in a frame unit; an inclination correction coefficient calculation unit (141) multiplies the difference between SNR of the high-frequency component and SNR of the low-frequency component inputted from an adder (140) by a constant and adds a bias component to the product so as to calculate an inclination correction coefficient ?3. The inclination correction coefficient is used for adjusting the spectrum inclination of a quantized noise.
摘要翻译：公开了能够在不改变共振峰重量的情况下调整量化噪声的频谱倾斜度的音频编码装置。该装置包括：HPF（131），其从输入音频信号中提取频率区域的高频分量; 高频能量计算单元，其计算帧单位中的高频分量的能级; LPF（133），其从所述输入音频信号中提取所述频率区域的低频分量; 低能量计算单元（134），其计算帧单位中的低频分量的能级; 倾斜校正系数计算单元（141）将从加法器（140）输入的低频分量的SNR与高频成分的SNR之差乘以常数，并将偏置分量加到乘积上，以计算倾斜校正系数α3。倾斜校正系数用于调整量化噪声的频谱倾斜度。

8. 发明授权

US08200483B2 Adaptive sound source vector quantization device, adaptive sound source vector inverse quantization device, and method thereof 有权
标题翻译：自适应声源矢量量化装置，自适应声源矢量逆量化装置及其方法
公开(公告)号：US08200483B2
公开(公告)日：2012-06-12
申请号：US12518944
申请日：2007-12-14
申请人： Kaoru Sato , Toshiyuki Morii
发明人： Kaoru Sato , Toshiyuki Morii
IPC分类号： G10L19/12
CPC分类号： G10L19/12 , G10L19/038
摘要： Disclosed is an adaptive excitation vector quantization device capable of improving quantization accuracy of adaptive excitation vector quantization while suppressing increase of the calculation amount in CELP encoding which performs encoding in sub-frame units. An adaptive excitation vector generator cuts out an adaptive excitation vector of a frame length (n) from an adaptive excitation codebook. An impulse response matrix former forms a n×n impulse response matrix using impulse response matrixes of sub-frames inputted from a synthesis filter. A target vector generator adds a linear prediction residual vector of each sub-frame to form a target vector of frame length (n). An evaluation measure calculator calculates an evaluation measure of the adaptive excitation vector quantization by using the adaptive excitation vector, the impulse response matrix, and the target vector.
摘要翻译：公开了一种能够提高自适应激励矢量量化的量化精度的自适应激励矢量量化装置，同时抑制以子帧为单位执行编码的CELP编码中的计算量的增加。自适应激励矢量发生器从自适应激励码本切出帧长度（n）的自适应激励矢量。脉冲响应矩阵形成器使用从合成滤波器输入的子帧的脉冲响应矩阵形成n×n脉冲响应矩阵。目标矢量生成器将每个子帧的线性预测残差矢量相加，形成帧长度（n）的目标矢量。评估测量计算器通过使用自适应激励矢量，脉冲响应矩阵和目标矢量来计算自适应激励矢量量化的评估量度。

9. 发明授权

US08112271B2 Audio encoding device and audio encoding method 有权
标题翻译：音频编码装置和音频编码方法
公开(公告)号：US08112271B2
公开(公告)日：2012-02-07
申请号：US12376640
申请日：2007-08-07
申请人： Toshiyuki Morii
发明人： Toshiyuki Morii
IPC分类号： G10L19/12
CPC分类号： G10L19/12 , G10L19/09 , G10L19/26
摘要： Provided is an audio encoding device capable of improving performance of an adaptive codebook and improving quality of a decoded audio. In this audio encoding device, an adaptive codebook cuts out a vector specified by a comparator from adaptive code vectors stored in an internal buffer and outputs it to a filter and a switch. The filter performs a predetermined filtering process on the adaptive sound source signal and outputs the obtained adaptive code vector to the switch. According to an instruction from the comparator, the switch outputs the adaptive code vector directly output from the adaptive codebook to a adjuster when the adaptive codebook is searched and outputs the adaptive code vector output from the filter after being subjected to the filtering process to the gain adjuster when a fixed sound source is searched after the adaptive sound source search.
摘要翻译：提供一种能够改善自适应码本的性能并提高解码音频的质量的音频编码装置。在该音频编码装置中，自适应码本从存储在内部缓冲器中的自适应码矢量中切出由比较器指定的向量，并将其输出到滤波器和开关。滤波器对自适应声源信号执行预定的滤波处理，并将获得的自适应码矢量输出到开关。根据比较器的指令，当搜索自适应码本时，开关输出自适应码本直接输出的自适应码矢量到调节器，并且在经过滤波处理之后输出从滤波器输出的自适应码矢量到增益在自适应声源搜索后搜索固定声源时调节器。

10. 发明申请

US20110316732A1 VECTOR QUANTIZATION DEVICE, VECTOR INVERSE-QUANTIZATION DEVICE, AND METHODS OF SAME 有权
标题翻译：矢量量化装置，矢量反相量化装置及其方法
公开(公告)号：US20110316732A1
公开(公告)日：2011-12-29
申请号：US13148892
申请日：2010-02-12
申请人： Kaoru Satoh , Toshiyuki Morii
发明人： Kaoru Satoh , Toshiyuki Morii
IPC分类号： H04N7/26
CPC分类号： G10L19/038 , G10L19/07 , G10L19/12 , G10L19/18 , G10L2019/0005 , H03M7/3082
摘要： An LSP vector quantization device able to improve the precision of quantization in vector quantization where a codebook for first stage vector quantization is switched according to the type of a feature that has a correlation with the quantization target vector. In this device, a classifier (101) selects, from a plurality of code vectors for classifying, the code vector for classifying that indicates the type of the feature that has a correlation with the quantization target vector; a switch (102) selects, from among a plurality of first codebooks, the first codebook corresponding to the abovementioned type; an error minimizing unit (105) selects, from the plurality of first code vectors constituting the selected first codebook, the first code vector closest to the quantization target vector; a matrix determining unit (106) selects, from a plurality of matrices, the matrix corresponding to the abovementioned type; and the error minimizing unit (105) uses the selected matrix to select, from a plurality of second code vectors, the one that is closest to the residual vector between the selected first code vector and the quantization target vector.
摘要翻译： LSP向量量化装置能够根据与量化对象矢量具有相关性的特征的类型来切换用于第一级矢量量化的码本的矢量量化中的量化精度。在该装置中，分类器（101）从用于分类的多个代码矢量中选择用于分类的代码矢量，其指示与量化目标矢量具有相关性的特征的类型; 开关（102）从多个第一码本中选择与上述类型对应的第一码本; 误差最小化单元（105）从构成所选择的第一码本的多个第一码矢量中选择最接近量化目标矢量的第一码矢量; 矩阵确定单元（106）从多个矩阵中选择与上述类型对应的矩阵; 并且所述误差最小化单元（105）使用所选择的矩阵从多个第二码矢量中选择最接近所选择的第一码矢量和量化目标矢量之间的残差矢量的矩阵。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式