公开(公告)号：US07636055B2

公开(公告)日：2009-12-22

申请号：US12170232

申请日：2008-07-09

申请人： Tomofumi Yamanashi ,  Kaoru Sato ,  Toshiyuki Morii

发明人： Tomofumi Yamanashi ,  Kaoru Sato ,  Toshiyuki Morii

IPC分类号： H03M7/00 ,  G01L19/12

CPC分类号： G10L19/005 ,  G11B20/1833 ,  G11B20/24

摘要： A signal decoding apparatus preventing substantial noise from being produced when transmission error occurs during decoding of scalable-coded information. In this signal decoding apparatus, a coded information operation section (601) performs error detection for base layer coded information, first enhancement layer coded information and second enhancement layer coded information using transmission error detection bits. A decoding operation control section (602) performs ON/OFF control of control switches (606, 607) in accordance with pattern information indicating error detection results and bit rate patterns, and controls the sampling frequencies of sampling frequency adjustment sections (608, 609). A base layer decoding section (603), first enhancement layer decoding section (604) and second enhancement layer decoding section (605) perform decoding of coded information or frame loss compensation processing, depending on error detection results and bit rates. Sampling frequency adjustment sections (608, 609) adjust the sampling frequency of the decoded signal.

摘要翻译： 一种信号解码装置，用于在可缩放编码信息的解码期间发生传输错误时，防止产生大量噪声。 在该信号解码装置中，编码信息操作部（601）使用传输错误检测位对基层编码信息，第一增强层编码信息和第二增强层编码信息进行错误检测。 解码操作控制部分根据指示错误检测结果和比特率模式的模式信息执行控制开关（606,607）的接通/断开控制，并且控制采样频率调节部分（608,609）的采样频率， 。 基于层解码部（603），第一增强层解码部（604）和第二增强层解码单元（605），根据错误检测结果和比特率进行编码信息或帧丢失补偿处理的解码。 采样频率调整部（608,659）调整解码信号的采样频率。

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：US20090006086A1

公开(公告)日：2009-01-01

申请号：US11658585

申请日：2005-07-25

申请人： Tomofumi Yamanashi ,  Kaoru Sato ,  Toshiyuki Morii

发明人： Tomofumi Yamanashi ,  Kaoru Sato ,  Toshiyuki Morii

IPC分类号： G10L21/02

CPC分类号： G10L19/24 ,  G10L19/005

摘要： A signal decoding apparatus that can suppress any large unusual sounds to provide decoded signals of improved audibility even when the number of hierarchical layers to be used in the decoding process varies due to a packet loss or the like in communication utilizing a scalable encoding/decoding technique. In the signal decoding apparatus, a gain adjusting part (2308) adjusts, based on a control of a decoding control part (2301), the gain of a basic layer decoded signal outputted from a basic layer decoding part (2302). A gain adjusting part (2309) adjusts, based on a control of the decoding control part (2301), the gain of a first expansion layer decoded signal outputted from a first expansion layer decoding part (2303). A gain adjusting part (2310) adjusts, based on a control of the decoding control part (2301), the gain of a second expansion layer decoded signal outputted from a second expansion layer decoding part (2304).

摘要翻译： 即使当在解码处理中使用的分层数量由于在使用可伸缩编码/解码技术的通信中的分组丢失等而变化时，也可以抑制任何大的异常声音来提供改善的可听性的解码信号的信号解码装置 。 在信号解码装置中，增益调整部（2308）根据解码控制部（2301）的控制，调整从基本层解码部（2302）输出的基本层解码信号的增益。 增益调整部（2309）根据解码控制部（2301）的控制来调整从第一扩展层解码部（2303）输出的第一扩展层解码信号的增益。 增益调整部（2310）根据解码控制部（2301）的控制来调整从第二扩展层解码部（2304）输出的第二扩展层解码信号的增益。

公开(公告)号：US20070179780A1

公开(公告)日：2007-08-02

申请号：US10596773

申请日：2004-12-20

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： G10L19/032

摘要： A voice and musical tone coding apparatus is provided that can perform high-quality coding by executing vector quantization taking the characteristics of human hearing into consideration. In this voice and musical tone coding apparatus, a quadrature transformation processing section (201) converts a voice and musical tone signal from time components to frequency components. An auditory masking characteristic value calculation section (203) finds an auditory masking characteristic value from a voice and musical tone signal. A vector quantization section (202) performs vector quantization changing a calculation method of a distance between a code vector found from a preset codebook and a frequency component based on an auditory masking characteristic value.

摘要翻译： 提供一种语音和乐音编码装置，其可以考虑到人类听觉的特征，执行矢量量化，从而进行高质量的编码。 在这种语音和乐音编码装置中，正交变换处理部（201）将语音和乐音信号从时间分量转换为频率分量。 听觉掩蔽特性值计算部（203）从语音和乐音信号中求出听觉掩蔽特性值。 矢量量化部（202）进行矢量量化，根据听觉掩蔽特性值，改变从预设码本找到的码矢量与频率分量之间的距离的计算方法。

公开(公告)号：US09153242B2

公开(公告)日：2015-10-06

申请号：US13505634

申请日：2010-11-12

申请人： Tomofumi Yamanashi ,  Toshiyuki Morii

发明人： Tomofumi Yamanashi ,  Toshiyuki Morii

IPC分类号： G10L21/00 ,  G10L19/00 ,  G10L19/24 ,  G10L19/02

CPC分类号： G10L19/24 ,  G10L19/0204

摘要： A coding apparatus is provided that improves the quality of a decoded signal in a hierarchical coding (scalable coding) scheme in which a coding target band is selected in each hierarchy (layer). The coding apparatus includes a first layer coding section that selects a first quantization target band of inputted spectrum and generates first layer coded information including first band information of the selected band. An adder generates a first layer difference spectrum using a first decoded signal generated using the first layer coded information and the inputted spectrum. A second layer coding section generates second layer coded information including second band information of the selected band, wherein first layer coding section determines a method of quantizing the gain of the inputted spectrum from a plurality of candidates based on the first band information and second band information.

摘要翻译： 提供一种编码装置，其提高了在每个层级（层）中选择编码目标频带的分级编码（可分级编码）方案中的解码信号的质量。 编码装置包括：第一层编码部，其选择输入的频谱的第一量化目标频带，并生成包含所选频带的第一频带信息的第一层编码信息。 加法器使用使用第一层编码信息和输入频谱产生的第一解码信号产生第一层差谱。 第二层编码部分生成包括所选频带的第二频带信息的第二层编码信息，其中第一层编码部分基于第一频带信息和第二频带信息确定从多个候选中量化输入频谱的增益的方法 。

公开(公告)号：US20120245931A1

公开(公告)日：2012-09-27

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

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：US08255210B2

公开(公告)日：2012-08-28

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： G10L21/02 ,  G10L21/00 ,  G10L13/00

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：US08099291B2

公开(公告)日：2012-01-17

申请号：US11658585

申请日：2005-07-25

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： G10L19/24 ,  G10L19/005

摘要： A signal decoding apparatus that can suppress any large unusual sounds to provide decoded signals of improved audibility even when the number of hierarchical layers to be used in the decoding process varies due to a packet loss or the like in communication utilizing a scalable encoding/decoding technique. In the signal decoding apparatus, a gain adjusting part (2308) adjusts, based on a control of a decoding control part (2301), the gain of a basic layer decoded signal outputted from a basic layer decoding part (2302). A gain adjusting part (2309) adjusts, based on a control of the decoding control part (2301), the gain of a first expansion layer decoded signal outputted from a first expansion layer decoding part (2303). A gain adjusting part (2310) adjusts, based on a control of the decoding control part (2301), the gain of a second expansion layer decoded signal outputted from a second expansion layer decoding part (2304).

摘要翻译： 即使当在解码处理中使用的分层数量由于在使用可伸缩编码/解码技术的通信中的分组丢失等而变化时，也可以抑制任何大的异常声音来提供改善的可听性的解码信号的信号解码装置 。 在信号解码装置中，增益调整部（2308）根据解码控制部（2301）的控制，调整从基本层解码部（2302）输出的基本层解码信号的增益。 增益调整部（2309）根据解码控制部（2301）的控制来调整从第一扩展层解码部（2303）输出的第一扩展层解码信号的增益。 增益调整部（2310）根据解码控制部（2301）的控制来调整从第二扩展层解码部（2304）输出的第二扩展层解码信号的增益。

公开(公告)号：US07653539B2

公开(公告)日：2010-01-26

申请号：US10590417

申请日：2005-02-22

申请人： Tomofumi Yamanashi ,  Kaoru Sato ,  Toshiyuki Morii

发明人： Tomofumi Yamanashi ,  Kaoru Sato ,  Toshiyuki Morii

IPC分类号： G10L21/02

CPC分类号： G10L19/24

摘要： There is provided a communication device for effectively encoding an audio/music signal while maintaining a predetermined quality by controlling the transmission bit rate of the transmission side considering the use environment of the reception side. In this device, a transmission mode decision unit (101) detects an environment noise contained in the background of the audio/music signal in the input signal and decides the transmission mode controlling the transmission bit rate of the signal transmitted from a communication terminal device (150), which is a communication terminal of the partner side, according to the environment noise level. A signal decoding unit (103) decodes encoded information transmitted from the communication terminal device (150) via a transmission path (110) and outputs the obtained signal as an output signal. Here, the signal decoding unit (103) detects a transmission error by comparing the transmission mode information contained in the encoded information outputted from the transmission path (110), to the transmission mode information obtained by the transmission mode decision unit (101) while considering the transmission delay.

摘要翻译： 提供了一种用于通过根据接收侧的使用环境控制发送侧的传输比特率来保持预定质量而有效地对音频/音乐信号进行编码的通信装置。 在该装置中，发送模式决定部（101）检测输入信号中音频/音乐信号背景中包含的环境噪声，并决定控制从通信终端装置发送的信号的发送比特率的发送模式（ 150），它是伙伴方的通信终端，根据环境噪声水平。 信号解码单元（103）经由传输路径（110）解码从通信终端装置（150）发送的编码信息，并将获得的信号作为输出信号输出。 这里，信号解码单元（103）通过将从传输路径（110）输出的编码信息中包含的传输模式信息与由传输模式决定单元（101）获得的传输模式信息进行比较来检测传输错误，同时考虑 传输延迟。

公开(公告)号：US20090171673A1

公开(公告)日：2009-07-02

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： G10L21/00

CPC分类号： G10L19/0208 ,  G10L21/038

摘要： It is possible to provide an encoding device and an encoding method capable of realizing encoding with a very small information amount and a very small calculation amount 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. In this device, when encoding higher-band spectrum data in a signal to be encoded, according to lower-band spectrum data in the signal, only for apart (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： 可以提供一种编码装置和编码方法，该编码装置和编码方法能够在宽带信号中根据低频带频谱数据编码高频带频谱数据时以非常小的信息量和非常小的计算量来实现编码。 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。 在该装置中，当对要编码的信号中的较高频带频谱数据进行编码时，根据信号中的低频带频谱数据，仅对于较高频带频谱数据的分开（头部），较低频带频谱 对量化后的数据进行近似部分搜索，并根据搜索结果生成高频带频谱数据。