公开(公告)号：US20090129576A1

公开(公告)日：2009-05-21

申请号：US11995718

申请日：2006-07-14

申请人： Tomofumi Yamanashi ,  Kaoru Satoh ,  Toshiyuki Morii

发明人： Tomofumi Yamanashi ,  Kaoru Satoh ,  Toshiyuki Morii

IPC分类号： H04M3/42 ,  G10L19/00

CPC分类号： H04M3/56 ,  G10L19/173 ,  G10L19/24 ,  H04Q2213/13034 ,  H04Q2213/13106 ,  H04Q2213/1324

摘要： It is an object of the present invention to provide a relay device, a communication terminal, a signal decoder, a method for processing a signal, and a program for processing a signal, which make it possible to achieve a multi-party communication system capable of preventing a significant deterioration of the quality of a sound obtained by decoding a speech/audio signal without increasing a cost for processing, as compared with the conventional communication terminals, the conventional communication techniques, and the like. The relay device comprises a receiver 11 for receiving information transmitted from a plurality of communication terminals participating in multi-party communications and encoded on a layer basis in a plurality of layers by scalable coding; a reconstruction processor 15 for generating control information used to combine, on a layer basis, the encoded information received by the receiver 11 from the plurality of communication terminals; and an integrator/transmitter 16 for integrating, on a layer basis, the encoded received by the receiver 11 from the plurality of communication terminals in accordance with the control information generated by the reconstruction processor 15.

摘要翻译： 本发明的目的是提供一种中继装置，通信终端，信号解码器，用于处理信号的方法以及用于处理信号的程序，这使得能够实现能够实现的多方通信系统 传统的通信技术等，与传统通信终端相比，防止了通过解码语音/音频信号而获得的声音的质量的显着劣化，而不增加处理成本。 中继装置包括：接收机11，用于接收从参与多方通信的多个通信终端发送的信息，并通过可伸缩编码在多层中以层为基础进行编码; 用于产生控制信息的重建处理器15，用于在多个通信终端的基础上组合由接收机11接收的编码信息; 以及积分器/发送器16，用于根据由重建处理器15产生的控制信息，在层上基于多个通信终端接收由接收器11接收的编码。

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。

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.

公开(公告)号：US20110137643A1

公开(公告)日：2011-06-09

申请号：US13057454

申请日：2009-08-07

申请人： Tomofumi Yamanashi ,  Masahiro Oshikiri ,  Toshiyuki Morii ,  Hiroyuki Ehara

发明人： Tomofumi Yamanashi ,  Masahiro Oshikiri ,  Toshiyuki Morii ,  Hiroyuki Ehara

IPC分类号： G10L19/02

CPC分类号： G10L19/0204 ,  G10L19/0212 ,  G10L19/032 ,  G10L19/24 ,  G10L21/02

摘要： Disclosed is a spectral smoothing device with a structure whereby smoothing is performed after a nonlinear conversion has been performed for a spectrum calculated from an audio signal, and with which the amount of processing calculation is significantly reduced while maintaining excellent audio quality. With this spectral smoothing device, a sub band division unit (102) divides an input spectrum into multiple sub bands; a representative value calculation unit (103) calculates a representative value for each sub band using an arithmetic mean and a geometric mean; with respect to each representative value, a nonlinear conversion unit (104) performs a nonlinear conversion the characteristic of which is further emphasized as the value increases; and a smoothing unit (105) that smoothes the representative value which has undergone the nonlinear conversion for each sub band, at the frequency domain.

摘要翻译： 公开了一种光谱平滑装置，其具有在对从音频信号计算出的频谱进行非线性转换之后进行平滑处理，并且在保持优良音频质量的同时显着减少处理计算量的结构。 利用该频谱平滑装置，子带分割单元（102）将输入频谱划分成多个子频带; 代表值计算单元（103）使用算术平均值和几何平均值计算每个子带的代表值; 对于每个代表值，非线性转换单元（104）执行非线性转换，其特性随着值的增加被进一步强调; 以及平滑化单元（105），其以频域对每个子带进行了非线性转换的代表值进行平滑化。

公开(公告)号：US20100106496A1

公开(公告)日：2010-04-29

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： G10L19/00

CPC分类号： G10L19/032 ,  G10L19/0212 ,  G10L19/10

摘要： Provided is an encoding device which can reduce the encoding distortion as compared to the conventional technique and can obtain a preferable sound quality for auditory sense. In the encoding device, a shape quantization unit (111) quantizes the shape of an input spectrum with a small number of pulse positions and polarities. The shape quantization unit (111) 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 (112) calculates a gain of a pulse searched by the shape quantization unit (111) for each of bands.

摘要翻译： 提供了一种与传统技术相比可以减少编码失真并且可以获得用于听觉的优选声音质量的编码装置。 在编码装置中，形状量化单元（111）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（111）将脉冲位置搜索后的脉冲幅度宽度设定为以前已经搜索到的脉冲幅度宽度以下的值。 增益量化单元（112）针对每个频带计算由形状量化单元（111）搜索的脉冲的增益。

公开(公告)号：US20100057446A1

公开(公告)日：2010-03-04

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： G10L19/00 ,  G10L19/08

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：US20090198491A1

公开(公告)日：2009-08-06

申请号：US12300225

申请日：2007-05-11

申请人： Kaoru Sato ,  Toshiyuki Morii ,  Tomofumi Yamanashi

发明人： Kaoru Sato ,  Toshiyuki Morii ,  Tomofumi Yamanashi

IPC分类号： G10L19/06

CPC分类号： H03M7/3082 ,  G10L19/07

摘要： Disclosed is an LPC vector quantization device capable of quantizing an LSP vector by using correlation between divided vectors. The device includes: a vector dividing unit (101) for dividing an inputted LSP vector into a first divided vector and a second divided vector; a first quantization unit (102) for quantizing the first divided vector by using a first codebook formed by a plurality of first code vectors to generate a first code; a prediction vector selection unit (103) for predicting a second divided vector from the first code by using a prediction codebook formed by a plurality of prediction code vectors to create a prediction vector; a prediction residual generation unit (104) for obtaining a residual between the prediction vector and the second divided vector to create a prediction residual vector; a second quantization unit (105) for quantizing the prediction residual vector by using a second codebook formed by a plurality of second code vectors to create a second code; and a multiplexing unit (106) for generating a quantization vector code by multiplexing the first code and the second code.

摘要翻译： 公开了一种LPC矢量量化装置，其能够通过使用分割矢量之间的相关来量化LSP矢量。 该装置包括：矢量分割单元，用于将输入的LSP矢量划分为第一分割矢量和第二分割矢量; 第一量化单元（102），用于通过使用由多个第一码矢量形成的第一码本来量化第一划分矢量以产生第一码; 预测矢量选择单元，用于通过使用由多个预测码矢量形成的预测码本来从第一码预测第二划分矢量以产生预测矢量; 预测残差生成单元，用于获得所述预测矢量和所述第二分割矢量之间的残差，以产生预测残差矢量; 第二量化单元（105），用于通过使用由多个第二代码矢量形成的第二代码簿来量化所述预测残差矢量以产生第二代码; 以及用于通过多路复用第一代码和第二代码来生成量化矢量代码的复用单元（106）。

公开(公告)号：US20070271101A1

公开(公告)日：2007-11-22

申请号：US11569377

申请日：2005-05-13

申请人： Kaoru Sato ,  Toshiyuki Morii ,  Tomofumi Yamanashi

发明人： Kaoru Sato ,  Toshiyuki Morii ,  Tomofumi Yamanashi

IPC分类号： G10L13/06

CPC分类号： G10L19/005 ,  G10L19/24

摘要： An audio/music decoding device capable of improving quality of a decoded signal generated by conceal processing of a frame erase using a scalable encoding method. The audio/music decoding device includes a frame loss detector that determines whether encoded information is normally received and generates frame loss information indicating the result of the determination. According to the frame loss information, a first decoder performs decoding by using at least one of the following encoded information: the first encoded information on the frame immediately before, the first encoded information on the current frame, and the second encoded information on the current frame. According to the frame loss information, a second decoder performs decoding by using at least one of the following encoded information: the first encoded information on the frame immediately before, the first encoded information on the current frame, the second encoded information on the frame immediately before, and the second encoded information on the current frame. An adder adds the decoded signal outputted from the first decoder and the decoded signal outputted from the second decoder.

摘要翻译： 一种音频/音乐解码装置，其能够使用可伸缩编码方法来提高通过隐藏处理帧擦除而产生的解码信号的质量。 音频/音乐解码装置包括帧丢失检测器，其确定编码信息是否被正常接收，并产生指示确定结果的帧丢失信息。 根据帧丢失信息，第一解码器通过使用以下编码信息中的至少一个来执行解码：紧接着的帧上的第一编码信息，当前帧上的第一编码信息和关于当前帧的第二编码信息 帧。 根据帧丢失信息，第二解码器通过使用以下编码信息中的至少一个来执行解码：紧接着的帧上的第一编码信息，当前帧上的第一编码信息，帧上的第二编码信息 之前，以及当前帧上的第二编码信息。 加法器将从第一解码器输出的解码信号和从第二解码器输出的解码信号相加。

公开(公告)号：US08731909B2

公开(公告)日：2014-05-20

申请号：US13057454

申请日：2009-08-07

申请人： Tomofumi Yamanashi ,  Masahiro Oshikiri ,  Toshiyuki Morii ,  Hiroyuki Ehara

发明人： Tomofumi Yamanashi ,  Masahiro Oshikiri ,  Toshiyuki Morii ,  Hiroyuki Ehara

IPC分类号： G10L19/02 ,  G10L19/14 ,  G10L19/00

CPC分类号： G10L19/0204 ,  G10L19/0212 ,  G10L19/032 ,  G10L19/24 ,  G10L21/02

摘要： Disclosed is a spectral smoothing device with a structure whereby smoothing is performed after a nonlinear conversion has been performed for a spectrum calculated from an audio signal, and with which the amount of processing calculation is significantly reduced while maintaining excellent audio quality. With this spectral smoothing device, a sub band division unit (102) divides an input spectrum into multiple sub bands; a representative value calculation unit (103) calculates a representative value for each sub band using an arithmetic mean and a geometric mean; with respect to each representative value, a nonlinear conversion unit (104) performs a nonlinear conversion the characteristic of which is further emphasized as the value increases; and a smoothing unit (105) that smoothes the representative value which has undergone the nonlinear conversion for each sub band, at the frequency domain.

摘要翻译： 公开了一种光谱平滑装置，其具有在对从音频信号计算出的频谱进行非线性转换之后进行平滑处理，并且在保持优良音频质量的同时显着减少处理计算量的结构。 利用该频谱平滑装置，子带分割单元（102）将输入频谱划分成多个子频带; 代表值计算单元（103）使用算术平均值和几何平均值计算每个子带的代表值; 对于每个代表值，非线性转换单元（104）执行非线性转换，其特性随着值的增加被进一步强调; 以及平滑化单元（105），其以频域对每个子带进行了非线性转换的代表值进行平滑化。

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。