公开(公告)号：US08554549B2

公开(公告)日：2013-10-08

申请号：US12528659

申请日：2008-02-29

申请人： Masahiro Oshikiri ,  Toshiyuki Morii ,  Tomofumi Yamanashi

发明人： Masahiro Oshikiri ,  Toshiyuki Morii ,  Tomofumi Yamanashi

IPC分类号： G10L19/12

CPC分类号： G10L19/00 ,  G10L19/005 ,  G10L19/02 ,  G10L19/0208 ,  G10L19/038 ,  G10L19/083 ,  G10L19/24 ,  G10L25/18

摘要： A voice encoding device accurately encodes a spectrum shape of a signal having a strong tonality such as a vowel. The device includes: a sub-band divider which divides a first layer error conversion coefficient to be encoded into M sub-bands so as to generate M sub-band conversion coefficients; a shape vector encoder which performs encoding on each of the M sub-band conversion coefficients so as to obtain M shape encoded information and calculates a target gain of each of the M sub-band conversion coefficients; a gain vector former which forms one gain vector by using M target gains; a gain vector encoder which encodes the gain vector so as to obtain gain encoded information; and a multiplexer which multiplexes the shape encoded information with the gain encoded information.

摘要翻译： 语音编码装置对具有强音调的信号（例如元音）的频谱形状进行精确编码。 该装置包括：子带分割器，将要编码的第一层错误转换系数分成M个子带，以产生M个子带转换系数; 形状矢量编码器，对M个子带变换系数中的每一个进行编码，以获得M个形状的编码信息，并计算M个子带转换系数中的每一个的目标增益; 通过使用M个目标增益形成一个增益矢量的增益矢量前者; 增益矢量编码器，其对所述增益矢量进行编码，以获得增益编码信息; 以及多路复用器，其将形状编码信息与增益编码信息进行复用。

公开(公告)号：US20130166306A1

公开(公告)日：2013-06-27

申请号：US13819421

申请日：2012-06-05

申请人： Toshiyuki Morii

发明人： Toshiyuki Morii

IPC分类号： G10L19/00

CPC分类号： G10L19/10 ,  G10L19/00

摘要： A pulse location search device (400) is equipped with: a first search unit (401) that obtains a first location where a first pulse is located by conducting a first preliminary selection with respect to a first candidate group, and conducting a first search; a second search unit (402) that obtains a second location where a second pulse is located by using the first location and conducting a second search with respect to all of the location candidates of a second candidate group of locations where the second pulse is located; and a third search unit (403) that obtains a third location where the first pulse is located by using the second location and conducting a second preliminary selection with respect to the first candidate group, and conducting a third search with respect to the result of the second preliminary selection.

摘要翻译： 脉冲位置搜索装置（400）配备有：通过对第一候选组进行第一初步选择并且进行第一搜索来获得第一脉冲所在的第一位置的第一搜索单元（401） 第二搜索单元，通过使用第一位置获得第二个脉冲所在的第二位置，并对第二个脉冲位置的第二候选组的所有位置候选进行第二次搜索; 以及第三搜索单元（403），其通过使用所述第二位置来获得所述第一脉冲所在的第三位置，并针对所述第一候选组进行第二初步选择，并且针对所述第一搜索单元 第二次初步选择。

公开(公告)号：US08438020B2

公开(公告)日：2013-05-07

申请号：US12682086

申请日：2008-10-10

申请人： Kaoru Satoh ,  Toshiyuki Morii ,  Hiroyuki Ehara

发明人： Kaoru Satoh ,  Toshiyuki Morii ,  Hiroyuki Ehara

IPC分类号： G10L21/00

CPC分类号： G10L19/032 ,  G10L19/07 ,  G10L19/18 ,  G10L2019/0005

摘要： A vector quantizer which improves the accuracy of vector quantization in switching over a vector quantization codebook on a first stage depending on the type of feature having the correlation with a quantization target vector. In the vector quantizer, a classifier generates classification information representing a type of narrowband LSP vector having the correlation with wideband LSP (Line Spectral Pairs) of the plural types. A first codebook selects one sub-codebook corresponding to the classification information as a codebook used for the quantization of the first stage from plural sub-codebooks corresponding to each of the types of narrowband LSP vectors. A multiplier multiplies the quantization residual vector of the first stage inputted from an adder by a scaling factor corresponding to the classification information of plural scaling factors stored in a scaling factor determiner and outputs it to an adder as the quantization target of a second stage.

摘要翻译： 矢量量化器，其根据与量化目标矢量具有相关性的特征的类型，提高在第一级切换矢量量化码本时的矢量量化的精度。 在矢量量化器中，分类器生成表示与多种类型的宽带LSP（线谱对）具有相关性的窄带LSP矢量的类型的分类信息。 第一码本从对应于每种类型的窄带LSP矢量的多个子码本中选择与分类信息相对应的一个子码本作为用于第一级的量化的码本。 乘法器将从加法器输入的第一级的量化残差矢量乘以与存储在缩放因子确定器中的多个缩放因子的分类信息相对应的缩放因子，并将其作为第二级的量化对象输出到加法器。

公开(公告)号：US08386267B2

公开(公告)日：2013-02-26

申请号：US12919100

申请日：2009-03-18

申请人： Toshiyuki Morii

发明人： Toshiyuki Morii

IPC分类号： G10L19/00

CPC分类号： G10L19/008 ,  G10L19/24

摘要： A technique of improving the degree of freedom of controlling the accuracy of encoding a stereo signal. In a stereo signal encoding device, a sum/difference calculation section generates a monophonic signal which is the sum of first and second channel signals constituting a stereo signal and a side signal which is the difference between the first channel signal and the second channel signal. A mode setting section generates mode information that indicates either a monophonic encoding mode or a stereo encoding mode. A core layer encoding section, a first extended layer encoding section, a second extended layer encoding section, and a third extended layer encoding section individually carry out the monophonic encoding using the monophonic signals or the stereo encoding using both the monophonic signal and the side signal depending on the mode information, and output to a multiplexing section the resultant encoded information from the core layer to the third extended layer.

摘要翻译： 提高控制立体声信号编码精度的自由度的技术。 在立体声信号编码装置中，和/差计算部分生成作为构成立体声信号的第一和第二声道信号和作为第一声道信号和第二声道信号之间的差的侧信号的和的单声道信号。 模式设置部分生成指示单声道编码模式或立体声编码模式的模式信息。 核心层编码部分，第一扩展层编码部分，第二扩展层编码部分和第三扩展层编码部分使用单声道信号和侧信号单独执行使用单声道信号或立体声编码的单声道编码 取决于模式信息，并将所得到的编码信息从核心层输出到多路复用部分到第三扩展层。

公开(公告)号：US08306813B2

公开(公告)日：2012-11-06

申请号：US12528877

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： G10L19/032 ,  G10L19/0212 ,  G10L19/10

摘要： An encoding device reduces the encoding distortion as compared to the conventional technique and obtains a preferable sound quality for auditory sense. In the encoding device, a shape quantization unit quantizes the shape of an input spectrum with a small number of pulse positions and polarities. The shape quantization unit sets a pulse amplitude width to be searched later upon search of the pulse position to a value not greater than the pulse amplitude width which has been searched previously. A gain quantization unit calculates a gain of a pulse searched by the shape quantization unit for each of bands.

摘要翻译： 与常规技术相比，编码装置降低了编码失真，并且获得用于听觉的优选声音质量。 在编码装置中，形状量化单元以少量的脉冲位置和极性量化输入频谱的形状。 形状量化单元在将脉冲位置搜索到之后将要搜索的脉冲幅度宽度设置为不大于先前已经搜索的脉冲幅度宽度的值。 增益量化单元针对每个频带计算由形状量化单元搜索的脉冲的增益。

公开(公告)号：US20120278067A1

公开(公告)日：2012-11-01

申请号：US13515076

申请日：2010-12-13

申请人： Toshiyuki Morii

发明人： Toshiyuki Morii

IPC分类号： G10L19/02

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：US20120215527A1

公开(公告)日：2012-08-23

申请号：US13505093

申请日：2010-11-11

申请人： Tomofumi Yamanashi ,  Toshiyuki Morii ,  Hiroyuki Ehara

发明人： Tomofumi Yamanashi ,  Toshiyuki Morii ,  Hiroyuki Ehara

IPC分类号： G10L19/02

CPC分类号： G10L21/038 ,  G10L19/24

摘要： There is disclosed an encoder apparatus whereby, when a band expanding technique for encoding, based on the spectral data of a lower frequency portion, the spectral data of a higher frequency portion is applied to a lower layer in a hierarchical encoding/decoding system, an efficient encoding can be performed in an upper layer as well, thereby improving the decoded-signal quality. In an encoder apparatus (101), a second layer decoder unit (207) calculates a spectrum (differential spectrum), which is to be encoded in a third layer encoder unit (210) that is an upper layer of the second layer decoder unit (207), by applying such an ideal gain (first gain parameter a1) that minimizes the energy of the differential spectrum.

摘要翻译： 公开了一种编码器装置，其中当基于较低频率部分的频谱数据进行编码的频带扩展技术时，较高频率部分的频谱数据被应用于分级编码/解码系统中的较低层， 也可以在上层执行高效编码，从而提高解码信号质量。 在编码器装置（101）中，第二层解码单元（207）计算要在第二层解码器单元的上层的第三层编码器单元（210）中编码的频谱（差分频谱） 207），通过应用使差分频谱的能量最小化的理想增益（第一增益参数a1）。

公开(公告)号：US08249860B2

公开(公告)日：2012-08-21

申请号：US12518943

申请日：2007-12-14

申请人： Kaoru Sato ,  Toshiyuki Morii

发明人： Kaoru Sato ,  Toshiyuki Morii

IPC分类号： G10L19/00

CPC分类号： G10L19/038 ,  G10L19/125

摘要： Disclosed is an adaptive sound source vector quantization device capable of reducing deviation of the quantization accuracy of the adaptive sound source vector quantization of each sub-frame when performing an adaptive sound source vector quantization in a sub-frame unit by using a greater information amount in a first sub-frame than in a second sub-frame. In this device: when the device performs the adaptive sound source vector quantization of the first sub-frame, an adaptive sound source vector generation unit (104) cuts out an adaptive sound source vector of length r (r, n, m are integers satisfying the relationship: m

摘要翻译： 公开了一种自适应声源矢量量化装置，其能够通过使用更大的信息量在子帧单位中进行自适应声源矢量量化，从而减小每个子帧的自适应声源向量量化的量化精度的偏差 比第二子帧中的第一子帧。 在该装置中，当设备执行第一子帧的自适应声源向量量化时，自适应声源向量生成单元（104）切出长度为r（r，n，m为满足的整数）的自适应声源矢量 所述关系：m

公开(公告)号：US20120203548A1

公开(公告)日：2012-08-09

申请号：US13502228

申请日：2010-10-20

申请人： Toshiyuki Morii

发明人： Toshiyuki Morii

IPC分类号： G10L19/00

CPC分类号： G10L19/09 ,  H03M7/3082

摘要： Disclosed is a vector quantisation device which can reduce the computational complexity of an audio codec without reducing the audio quality. A vector quantisation device (112) searches a codebook using code vectors, with which the impulse response of an audibility weighted synthesis filter is convolved and which configure the codebook, and target vectors. A filtering unit (201) applies a filter exhibiting a low pass and/or a high pass characteristic to the impulse response. If the filter has a high pass characteristic, a compaction unit (202) then compacts the degree of the post-filtering impulse response. A convolution unit (203) convolves the post-filtering impulse response with each of the code vectors. If the filter has a low pass characteristic, a search unit (204) thins out elements of the plurality of code vectors with which the impulse response has been convolved, and elements of the target vectors.

摘要翻译： 公开了一种矢量量化装置，其可以在不降低音频质量的情况下降低音频编解码器的计算复杂度。 矢量量化装置（112）使用代码矢量搜索码本，使用该向量来卷积可听加权合成滤波器的脉冲响应并配置码本和目标矢量。 滤波单元（201）对脉冲响应应用呈现低通和/或高通特性的滤波器。 如果滤波器具有高通特性，则压实单元（202）然后压缩后滤波脉冲响应的程度。 卷积单元（203）将后滤波脉冲响应与每个代码矢量进行卷积。 如果滤波器具有低通特性，则搜索单元（204）显示脉冲响应已被卷积的多个码矢量的元素，以及目标矢量的元素。

公开(公告)号：US08223878B2

公开(公告)日：2012-07-17

申请号：US12689923

申请日：2010-01-19

申请人： Yutaka Murakami ,  Kiyotaka Kobayashi ,  Masayuki Orihashi ,  Toshiyuki Morii

发明人： Yutaka Murakami ,  Kiyotaka Kobayashi ,  Masayuki Orihashi ,  Toshiyuki Morii

IPC分类号： H04B7/02

CPC分类号： H04L1/0618

摘要： When space-time block code signals are to be transmitted, the patterns thereof are changed in accordance with data to be transmitted. This advantageously allows a good-quality data transmission to be achieved by the space-time block code signals. In addition, since data can be transmitted by use of the patterns of the space-time block code signals, the data transmission efficiency can be improved.

摘要翻译： 当要发送空时块码信号时，其模式根据要发送的数据而改变。 这有利于通过空时块代码信号来实现高质量的数据传输。 此外，由于可以通过使用空时块码信号的模式来发送数据，所以可以提高数据传输效率。