公开(公告)号：US20090299738A1

公开(公告)日：2009-12-03

申请号：US12295342

申请日：2007-03-29

申请人： Kaoru Sato ,  Toshiyuki Morii ,  Tomofumi Yamanashi

发明人： Kaoru Sato ,  Toshiyuki Morii ,  Tomofumi Yamanashi

IPC分类号： G10L21/00

CPC分类号： H03M7/3082 ,  G10L19/07

摘要： A vector quantizing device for dividing a sequence of vectors and quantizing them with an enhanced performance of vector quantization by using information on the correlation between the high and low order that the vector sequence has. The vector quantizing device (100) creates a predicted vector by prediction using a first quantization divided vector, creates the difference between the divided vector and the predicted vector as a predicted residual vector, and determines a second code by converting the predicted residual vector into a quantized vector. A vector dequantizing device (150) creates a predated vector by prediction using a first quantization divided vector, creates a second quantization divided vector by adding the predicted vector and the predicted residual vector, and creates a quantized vector by connecting the first and second quantization divided vectors.

摘要翻译： 一种矢量量化装置，用于通过使用关于矢量序列具有的高阶和低阶之间的相关性的信息，对矢量序列进行分割，并用矢量量化的增强性能量化它们。 矢量量化装置（100）通过使用第一量化分割矢量进行预测来生成预测矢量，将分割矢量与预测矢量之差作为预测残差矢量产生，并将预测残差矢量变换为 量化载体。 矢量去量化装置（150）通过使用第一量化分割矢量进行预测来生成预测矢量，通过将预测矢量和预测残差矢量相加来生成第二量化分割矢量，并通过连接第一和第二量化分割来产生量化矢量 向量

公开(公告)号：US20090016426A1

公开(公告)日：2009-01-15

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： H04B1/66

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：US07411522B2

公开(公告)日：2008-08-12

申请号：US10585313

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： H03M7/00 ,  G10L19/12

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：US20080167865A1

公开(公告)日：2008-07-10

申请号：US10590417

申请日：2005-02-22

申请人： Tomofumi Yamanashi ,  Kaoru Sato ,  Toshiyuki Mori

发明人： Tomofumi Yamanashi ,  Kaoru Sato ,  Toshiyuki Mori

IPC分类号： G10L19/14

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/音乐信号的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，并将所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：US20070250310A1

公开(公告)日：2007-10-25

申请号：US11630380

申请日：2005-06-16

申请人： Kaoru Sato ,  Toshiyuki Morii ,  Tomofumi Yamanashi

发明人： Kaoru Sato ,  Toshiyuki Morii ,  Tomofumi Yamanashi

IPC分类号： G10L19/04

CPC分类号： G10L19/24 ,  G10L19/12

摘要： There is disclosed an audio encoding device capable of realizing effective encoding while using audio encoding of the CELP method in an extended layer when hierarchically encoding an audio signal. In this device, a first encoding section (115) subjects an input signal (S11) to audio encoding processing of the CELP method and outputs the obtained first encoded information (S12) to a parameter decoding section (120). The parameter decoding section (120) acquires a first quantization LSP code (L1), a first adaptive excitation lag code (A1), and the like from the first encoded information (S12), obtains a first parameter group (S13) from these codes, and outputs it to a second encoding section (130). The second encoding section (130) subjects the input signal (S11) to a second encoding processing by using the first parameter group (S13) and obtains second encoded information (S14). A multiplexing section (154) multiplexes the first encoded information (S12) with the second encoded information (S14) and outputs them via a transmission path N to a decoding apparatus (150).

摘要翻译： 公开了一种音频编码装置，当对音频信号进行分层编码时，能够在扩展层中使用CELP方法的音频编码实现有效的编码。 在该装置中，第一编码部（115）使输入信号（S11）进行CELP方式的音频编码处理，并将获得的第一编码信息（S12）输出到参数解码部（120）。 参数解码部（120）从第一编码信息（S12）获取第一量化LSP码（L 1），第一自适应激励滞后码（A 1）等，得到第一参数组（S13 ），并将其输出到第二编码部（130）。 第二编码部（130）通过使用第一参数组（S13）对输入信号（S11）进行第二编码处理，并获得第二编码信息（S14）。 复用部（154）将第一编码信息（S12）与第二编码信息（S14）进行多路复用，并经由传输路径N将其输出到解码装置（150）。