公开(公告)号：US09123334B2

公开(公告)日：2015-09-01

申请号：US13515076

申请日：2010-12-13

申请人： Toshiyuki Morii

发明人： Toshiyuki Morii

IPC分类号： G10L19/10 ,  G10L19/107 ,  G10L19/00

CPC分类号： G10L19/038 ,  G10L19/107 ,  G10L2019/0013

摘要： Provided are a vector quantization device, a voice coding device, a vector quantization method, and a voice coding method which enable a reduction in the calculation amount of voice codec without deterioration of voice quality. In the vector quantization device, a first reference vector calculation unit (201) calculates a first reference vector by multiplying a target vector (x) by an auditory weighting LPC synthesis filter (H), and a second reference vector calculation unit (202) calculates a second reference vector by multiplying an element of the first reference vector by a filter having a high pass characteristic. A polarity preliminary selection unit (205) generates a polar vector by disposing a unit pulse having a positive or negative polarity, which is selected on the basis of the polarity of an element of the second reference vector, in the position of said element.

摘要翻译： 提供了能够在不降低语音质量的情况下减少语音编解码器的计算量的矢量量化装置，语音编码装置，矢量量化方法和语音编码方法。 在矢量量化装置中，第一参考矢量计算单元（201）通过将目标矢量（x）乘以听觉加权LPC合成滤波器（H）来计算第一参考矢量，第二参考矢量计算单元（202）计算 通过将第一参考矢量的元素乘以具有高通特性的滤波器的第二参考矢量。 极性预选单元（205）通过将基于第二参考矢量的元素的极性选择的具有正极性或负极性的单位脉冲设置在所述元件的位置来产生极性矢量。

公开(公告)号：US08719011B2

公开(公告)日：2014-05-06

申请号：US12529219

申请日：2008-02-29

申请人： Toshiyuki Morii ,  Masahiro Oshikiri ,  Tomofumi Yamanashi

发明人： Toshiyuki Morii ,  Masahiro Oshikiri ,  Tomofumi Yamanashi

IPC分类号： G10L21/00

CPC分类号： G10L19/038 ,  G10L19/10 ,  G10L25/18

摘要： Provided is an encoding device which can obtain a sound quality preferable for auditory sense even if the number of information bits is small. The encoding device includes a shape quantization unit (111) having: a section search unit (121) which searches for a pulse for each of bands into which a predetermined search section is divided; and a whole search unit (122) which performs search for a pulse over the entire search section. The shape of an input spectrum is quantized by a small number of pulse positions and polarities. A gain quantization unit (112) calculates a gain of the pulse searched by the shape quantization unit (111) and quantizes the gain for each of the bands.

摘要翻译： 提供一种编码装置，即使信息比特数较少，也可以获得听觉优先的声音质量。 编码装置包括形状量化单元（111），具有：搜索单元（121），搜索预定搜索区被分割成的每个频带的脉冲; 以及整个搜索单元（122），其执行搜索整个搜索部分的脉冲。 输入频谱的形状由少量的脉冲位置和极性量化。 增益量化单元（112）计算由形状量化单元（111）搜索的脉冲的增益，并对每个频带的增益进行量化。

公开(公告)号：US20130339009A1

公开(公告)日：2013-12-19

申请号：US13993851

申请日：2011-12-14

申请人： Tomofumi Yamanashi ,  Toshiyuki Morii

发明人： Tomofumi Yamanashi ,  Toshiyuki Morii

IPC分类号： G10L19/12

CPC分类号： G10L19/12 ,  G10L19/00 ,  G10L25/06 ,  G10L25/21

摘要： Provided are a coding device, a communication processing device, and a coding method, whereby processing operation load (computational load) is significantly reduced for a configuration which computes either frame energy or sub-frame energy of an input signal, using auto-correlation operations, without causing a decline in the precision of either the frame energy or the sub-frame energy. In a coding device (101), a sub-frame energy computation unit (201) computes the sub-frame energy by substituting the sum of input signal auto-correlation operations in a first range with the sum of auto-correlation operations in a second range which differs at least partially from the first range.

摘要翻译： 提供了一种编码装置，通信处理装置和编码方法，由此对于使用自相关操作来计算输入信号的帧能量或子帧能量的配置，处理操作负荷（计算负荷）显着降低 ，而不会导致帧能量或子帧能量的精度下降。 在编码装置（101）中，子帧能量计算单元（201）通过将第一范围内的输入信号自相关运算的和与第二范围的自相关运算的总和相乘来计算子帧能量 至少部分地与第一范围不同的范围。

公开(公告)号：US08229749B2

公开(公告)日：2012-07-24

申请号：US11721358

申请日：2005-12-09

申请人： Hiroyuki Ehara ,  Koji Yoshida ,  Toshiyuki Morii

发明人： Hiroyuki Ehara ,  Koji Yoshida ,  Toshiyuki Morii

IPC分类号： G10L13/00 ,  G10L19/00 ,  G10L21/04

CPC分类号： G10L19/24 ,  G10L19/07 ,  G10L21/038

摘要： There is provided a wide-band LSP prediction device and others capable of predicting a wide-band LSP from a narrow-band LSP with a high quantization efficiency and a high accuracy while suppressing the size of a conversion table correlating the narrow-band LSP to the wide-band LSP. In this device, a non-linear prediction unit (102) performs non-linear prediction by using a converted wide-band LSP inputted from a narrow-band/wide-band conversion unit (101) and inputs the non-linear prediction result to an amplifier (103). The converted wide-band LSP is inputted to an amplifier (104). An adder (122) adds multiplication results (vectors) inputted from the amplifiers (103, 104).

摘要翻译： 提供了一种宽带LSP预测装置和其他能够在抑制与窄带LSP相关联的转换表的大小的同时以高量化效率和高精度预测来自窄带LSP的宽带LSP的方法 宽带LSP。 在该装置中，非线性预测单元（102）通过使用从窄带/宽带转换单元（101）输入的转换宽带LSP进行非线性预测，并将非线性预测结果输入到 放大器（103）。 转换的宽带LSP被输入到放大器（104）。 加法器（122）将从放大器（103,104）输入的相乘结果相加。

公开(公告)号：US08121850B2

公开(公告)日：2012-02-21

申请号：US12299976

申请日：2007-05-09

申请人： Tomofumi Yamanashi ,  Kaoru Sato ,  Toshiyuki Morii

发明人： Tomofumi Yamanashi ,  Kaoru Sato ,  Toshiyuki Morii

IPC分类号： G10L19/00

CPC分类号： G10L19/0208 ,  G10L21/038

摘要： An encoding device and an encoding method are provided for encoding by reducing the number of samples to be processed when encoding higher-band spectrum data according to lower-band spectrum data in a wide-band signal. The device and the method can obtain a high-quality decoded signal even if a large quantization distortion is caused in the lower-band spectrum data. When encoding higher-band spectrum data in a signal to be encoded, according to lower-band spectrum data in the signal, only for a part (a head portion) of the higher-band spectrum data, the lower-band spectrum data after being quantized is subjected to approximate partial search and higher-band spectrum data is generated according to the search result.

摘要翻译： 提供一种编码装置和编码方法，用于通过在宽带信号中根据较低频带频谱数据对较高频带频谱数据进行编码时减少要处理的采样数量进行编码。 即使在较低频带频谱数据中引起较大的量化失真，该装置和方法也可以获得高质量的解码信号。 在要编码的信号中编码较高频带频谱数据时，根据信号中的较低频带频谱数据，仅对于较高频带频谱数据的一部分（头部），则存在较低频带频谱数据 对量化进行近似部分搜索，并根据搜索结果生成更高频谱的频谱数据。

公开(公告)号：US08036887B2

公开(公告)日：2011-10-11

申请号：US12781049

申请日：2010-05-17

申请人： Kazutoshi Yasunaga ,  Toshiyuki Morii ,  Hiroyuki Ehara

发明人： Kazutoshi Yasunaga ,  Toshiyuki Morii ,  Hiroyuki Ehara

IPC分类号： G10L19/12

CPC分类号： G10L19/135 ,  G10L19/12 ,  G10L2019/0007 ,  G10L2019/0013

摘要： A CELP speech decoder includes an adaptive codebook that generates an adaptive code vector and a random codebook that generates a random code vector. The random codebook includes an input vector provider that provides an input vector including at least one pulse, each pulse having a position and a polarity, a fixed waveform storage that stores at least one fixed waveform, and a selector that selects at least one of a first process and a second process based on a value of an adaptive codebook gain. The random codebook further includes a convolution section that generates the random code vector by convoluting the at least one fixed waveform with the input vector when the first process is selected. A synthesis filter outputs synthesized speech by performing linear prediction coefficient synthesis on a signal based on the adaptive code vector and the random code vector.

摘要翻译： CELP语音解码器包括产生自适应码矢量的自适应码本和产生随机码矢量的随机码本。 所述随机码本包括输入向量提供者，所述输入向量提供器提供包括至少一个脉冲，每个具有位置和极性的脉冲，存储至少一个固定波形的固定波形存储器的输入向量，以及选择器， 第一处理和基于自适应码本增益的值的第二处理。 所述随机码本还包括卷积部分，其通过在选择所述第一处理时将所述至少一个固定波形与所述输入矢量进行卷积来生成所述随机码矢量。 合成滤波器通过对基于自适应码矢量和随机码矢量的信号执行线性预测系数合成来输出合成语音。

公开(公告)号：US07978771B2

公开(公告)日：2011-07-12

申请号：US11913966

申请日：2006-04-28

申请人： Kaoru Sato ,  Toshiyuki Morii ,  Tomofumi Yamanashi

发明人： Kaoru Sato ,  Toshiyuki Morii ,  Tomofumi Yamanashi

IPC分类号： H04L27/00

CPC分类号： G10L19/24

摘要： An encoder generating a decoded signal with an improved quality by scalable encoding by canceling the characteristic inherent to the encoder and causing degradation of quality of the decoded signal. In the encoder, a first encoding section (102) encodes the input signal after down sampling, a first decoding section (103) decodes first encoded information outputted from the first encoding section (102), an adjusting section (105) adjusts the first decoded signal after up sampling by convoluting the first decoded signal after up sampling and an impulse response for adjustment, an adder (107) inverses the polarity of adjusted first decoded signal and adds the first decoded signal having the inverted polarity to the input signal, a second encoding section (108) encodes the residual signal outputted from the adder (107), and a multiplexing section (109) multiplexes the first encoded information outputted from the first encoding section (102) and the second encoded information outputted from the second encoding section (108).

摘要翻译： 编码器通过解除编码器固有的特性并导致解码信号的质量劣化，通过可分级编码产生具有改进质量的解码信号。 在编码器中，第一编码部（102）对下采样后的输入信号进行编码，第一解码部（103）解码从第一编码部（102）输出的第一编码信息，调整部（105） 通过在上采样之后卷积第一解码信号和用于调整的脉冲响应来进行采样之后的信号，加法器（107）反转调整后的第一解码信号的极性，并将具有反相极性的第一解码信号与输入信号相加，第二 编码部（108）对从加法器（107）输出的残差信号进行编码，多路复用部（109）将从第一编码部（102）输出的第一编码信息和从第二编码部输出的第二编码信息 108）。

公开(公告)号：US20110004469A1

公开(公告)日：2011-01-06

申请号：US12445812

申请日：2007-10-16

申请人： Kaoru Sato ,  Toshiyuki Morii ,  Tomofumi Yamanashi

发明人： Kaoru Sato ,  Toshiyuki Morii ,  Tomofumi Yamanashi

IPC分类号： G10L19/12 ,  G10L21/00

CPC分类号： G10L19/07

摘要： Disclosed are a vector quantization device and others capable of adaptively adjusting a vector space of a code vector for quantization of a second stage by using a quantization result of a first stage and improving the quantization accuracy. In the device, the first quantization unit (101) performs quantization of an LSP vector; a quantization residual difference generation unit (102) acquires a residual difference between the LSP vector and the first quantization vector obtained by the first quantization unit (101) as a quantization residual difference vector; an addition factor selection unit (103) selects one of the addition factor code vectors in an addition factor codebook as an addition factor vector according to the first code obtained by the first quantization unit (101); an addition residual difference generation unit (104) acquires a residual difference between the quantization residual difference vector and the addition factor vector as an addition residual vector; and a second quantization unit (105) performs quantization of the addition residual difference vector.

摘要翻译： 公开了一种能够通过使用第一级的量化结果自适应地调整用于第二级的量化的代码矢量的向量空间的矢量量化装置，并提高量化精度。 在该设备中，第一量化单元（101）执行LSP矢量的量化; 量化残差差产生单元（102）获取LSP矢量与由第一量化单元（101）获得的第一量化矢量之间的残差，作为量化残差差矢量; 加法因子选择单元（103）根据由第一量化单元（101）获得的第一代码，选择加法因子码本中的相加因子码矢量之一作为相加因子向量; 加法残差差产生单元（104）获取量化残差差矢量和加法因子矢量之间的残差作为加法残差矢量; 并且第二量化单元（105）执行加法残差差矢量的量化。

公开(公告)号：US20100290629A1

公开(公告)日：2010-11-18

申请号：US12809154

申请日：2008-12-22

申请人： Toshiyuki Morii

发明人： Toshiyuki Morii

IPC分类号： H04H20/88

CPC分类号： G10L19/008

摘要： A stereo signal converter capable of realizing encoding with less redundancy, low bit-rate, and high quality even if the positions of sound sources are different from one another. In this device, a sample difference analyzing section (111) uses the signal in which a right-channel signal is shifted by a sample difference (d) in terms of time and a left-channel signal to compute a sample difference (D) in which the correlation becomes highest. A sample difference value computing section (112) computes a sample difference value (z) (the value to shift the right-channel signal in the current frame) on the basis of the value after the right-channel signal is shifted in the previous frame and the sample difference (D). A sample difference value encoding section (113) encodes the sample difference value (z). A slide section (114) shifts the right-channel signal by the sample difference value (z) in terms of time. A sum difference computing section (115) adds the left-channel signal and the shifted right-channel signal to generate a monaural signal and subtracts the shifted right-channel signal from the left-channel signal to generate a side signal.

摘要翻译： 即使声源的位置彼此不同，立体声信号转换器能够实现较少的冗余，低比特率和高质量的编码。 在该装置中，样本差分析部（111）使用其中右通道信号在时间上以样本差（d）偏移的信号和左声道信号来计算样本差（D） 相关性最高。 样本差值计算部（112）根据前一帧中的右声道信号移位后的值，计算采样差值（z）（当前帧中的右声道信号的移位值） 和样本差（D）。 样本差值编码部（113）对样本差值（z）进行编码。 幻灯片部分（114）在时间上将右声道信号移位样品差值（z）。 和差差计算部分（115）将左声道信号和偏移的右声道信号相加以产生单声道信号，并从左声道信号中减去偏移的右声道信号以产生侧信号。

公开(公告)号：US07809558B2

公开(公告)日：2010-10-05

申请号：US11718555

申请日：2005-11-01

申请人： Toshiyuki Morii

发明人： Toshiyuki Morii

IPC分类号： G10L19/02

CPC分类号： G10L19/07 ,  G10L19/24 ,  G10L21/038

摘要： There is provided a vector conversion device for converting a reference vector used for quantization of an input vector so as to improve a signal quality including audio. In this vector conversion device, a vector quantization unit (902) acquires a number corresponding to a decoded LPC parameter of a narrow band from all the code vectors stored in a code book (903). A vector dequantization unit (904) references the number of the code vector obtained by the vector quantization unit (902) and selects a code vector from the code book (905). A conversion unit (906) performs calculation by using a sampling-adjusted decoded LPC parameter obtained from an up-sampling unit (901) and a code vector obtained from the vector dequantization unit (904), thereby obtaining a decoded LPC parameter of a broad band.

摘要翻译： 提供了一种矢量转换装置，用于转换用于输入矢量的量化的参考矢量，以便改善包括音频的信号质量。 在该向量变换装置中，矢量量化部（902）从存储在码本（903）的全部码矢量中取得与窄带的解码LPC参数对应的数字。 矢量反量化单元（904）参考由矢量量化单元（902）获得的码矢量的数量，并从码本（905）中选择码矢量。 转换单元（906）通过使用从上采样单元（901）获得的经取样调整的解码LPC参数和从矢量去量化单元（904）获得的代码矢量进行计算，由此获得广义的解码LPC参数 带。