公开(公告)号：US20070271092A1

公开(公告)日：2007-11-22

申请号：US11573761

申请日：2005-09-02

申请人： Hiroyuki Ehara ,  Toshiyuki Morii

发明人： Hiroyuki Ehara ,  Toshiyuki Morii

IPC分类号： G10L19/06

CPC分类号： G10L19/07 ,  G10L19/24

摘要： There is provided a scalable encoding device capable of realizing a bandwidth scalable LSP encoding with high performance by improving the conversion performance from narrow band LSPs to wide band LSPs. The device includes: an autocorrelation coefficient conversion unit (301) for converting the narrow band LSPs of Mn order to an autocorrelation coefficients of Mn order; an inverse lag window unit (302) for applying a window which has an inverse characteristic of a lag window supposed to be applied to the autocorrelation coefficients; an extrapolation unit (303) for extending the order of the autocorrelation coefficients to (Mn+Mi) order by extrapolating the inverse lag windowed autocorrelation coefficients; an up-sample unit (304) for performing an up-sample process in the autocorrelation domain which is equivalent to an up-sample process in a time domain for the autocorrelation coefficients of the (Mn+Mi) order so as to obtain autocorrelation coefficients of Mw order; a lag window unit (305) for applying a lag window to the autocorrelation coefficients of Mw order; and an LSP conversion unit (306) for converting the lag windowed autocorrelation coefficients into LSPs.

摘要翻译： 提供了一种通过提高从窄带LSP到宽带LSP的转换性能而能够以高性能实现带宽可伸缩LSP编码的可扩展编码装置。 该装置包括：用于将Mn阶的窄带LSP转换为Mn阶的自相关系数的自相关系数转换单元（301） 用于应用具有应用于自相关系数的滞后窗的逆特性的窗口的逆时滞窗单元（302）; 外推单元（303），用于通过推断逆滞后窗自相关系数来将自相关系数的顺序延伸到（Mn + Mi）阶; 用于在自相关域中执行与在时域中的上采样处理相匹配的（Mn + Mi）阶的自相关系数的上采样处理的上采样单元（304），以获得自相关系数 的Mw顺序; 用于将滞后窗口应用于Mw阶数的自相关系数的滞后窗单元（305）; 以及用于将滞后窗自相关系数转换成LSP的LSP转换单元（306）。

公开(公告)号：US06928406B1

公开(公告)日：2005-08-09

申请号：US09674442

申请日：2000-03-02

申请人： Hiroyuki Ehara ,  Toshiyuki Morii

发明人： Hiroyuki Ehara ,  Toshiyuki Morii

IPC分类号： G10L19/12 ,  G10L19/00 ,  G10L19/08 ,  H03M7/30

CPC分类号： G10L19/107 ,  G10L19/10 ,  G10L2019/0008

摘要： The total number of entries of an algebraic codebook is decreased by liming a random code vector generated from the algebraic codebook, and entries of a random codebook with a large number of pulses are assigned to a decreased portion. Further, the number of entries of the decreased portion is adaptively switched according to a mode.

摘要翻译： 代数码本的入口总数通过限制从代数码本生成的随机码矢量而减少，并且具有大量脉冲的随机码本的条目被分配给减少的部分。 此外，根据模式自适应地切换减少部分的条目数。

公开(公告)号：US08838443B2

公开(公告)日：2014-09-16

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： G10L19/14 ,  G10L19/12 ,  G10L19/00 ,  G10L21/038 ,  G10L19/24

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：US20120041761A1

公开(公告)日：2012-02-16

申请号：US13255982

申请日：2010-03-12

申请人： Toshiyuki Morii ,  Hiroyuki Ehara

发明人： Toshiyuki Morii ,  Hiroyuki Ehara

IPC分类号： G10L19/00

CPC分类号： G10L19/167 ,  G10L19/0212 ,  G10L19/24

摘要： Disclosed is a voice decoding apparatus wherein the processor may be continuously employed for other applications for a prescribed time but, in response to an urgent interrupt, the processor can generate synthesised sound even when being used for other applications, without interruption. In this apparatus, a packet receiving section (101) receives packets of the layers of a plurality of frames and extracts code from the received packets. A state/code storage section (103) stores the code and decoding state of the code. A layer selection section (104) selects a layer number and a frame number corresponding to the code to be initially decoded, based on the decoding state. A decoding section (105) decodes the code of the selected frame number and layer number.

摘要翻译： 公开了一种语音解码装置，其中处理器可以在规定时间内连续地用于其他应用，但是响应于紧急中断，即使在不间断地用于其他应用的情况下，处理器也可以产生合成的声音。 在该装置中，分组接收部（101）接收多个帧的分组，并从接收到的分组中提取代码。 状态/代码存储部（103）存储代码的代码和解码状态。 层选择部（104）基于解码状态来选择与要开始解码的码相对应的层号和帧号。 解码部（105）对所选择的帧号和层号的码进行解码。

公开(公告)号：US20110137661A1

公开(公告)日：2011-06-09

申请号：US13057162

申请日：2009-08-07

申请人： Toshiyuki Morii ,  Kaoru Sato ,  Hiroyuki Ehara

发明人： Toshiyuki Morii ,  Kaoru Sato ,  Hiroyuki Ehara

IPC分类号： G10L21/00

CPC分类号： G10L19/008

摘要： A quantizing device for more efficient quantization realized by lessening the computational complexity of quantization of a balance weighting factor. The device includes a power/correlation calculating unit (201), an intermediate value calculating unit (202), a codebook (203), a searching unit (204), and a decoding unit (205). The power/correlation calculating unit (201) determines the value of the correlation between an L signal and an M signal and the value of the correlation between an R signal and the M signal and calculates the power of the M signal. The intermediate value calculating unit (202) determines two intermediate values by using the power of the M signal and the values of the correlations. The codebook (203) holds scalar values. The searching unit (204) selects a coefficient for balance adjustment of the amplitude of the M signal with respect to the L signal from among the scalar values according to the two intermediate values. The decoding unit (205) determines the coefficient for balance adjustment of the M signal with respect to the R signal by using the selected coefficient for balance adjustment of the M signal with respect to the L signal on the basis of the quantitative relation between the amplitudes of the signals of when the M signal is generated by down-mixing the L and R signals.

摘要翻译： 通过减少平衡加权因子的量化的计算复杂度来实现用于更有效量化的量化装置。 该装置包括功率/相关计算单元（201），中间值计算单元（202），码本（203），搜索单元（204）和解码单元（205）。 功率/相关计算单元（201）确定L信号和M信号之间的相关值和R信号与M信号之间的相关值，并计算M信号的功率。 中间值计算单元（202）通过使用M信号的功率和相关值来确定两个中间值。 码本（203）保存标量值。 搜索单元（204）根据两个中间值从标量值中选择相对于L信号的M信号的幅度的平衡调整系数。 解码单元（205）基于幅度之间的定量关系，通过使用所选择的系数用于M信号相对于L信号的平衡调整，确定M信号相对于R信号的平衡调整系数 通过下混合L和R信号来产生M信号的信号。

公开(公告)号：US20090292537A1

公开(公告)日：2009-11-26

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： G10L19/04

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：US20090265167A1

公开(公告)日：2009-10-22

申请号：US12440661

申请日：2007-09-14

申请人： Hiroyuki Ehara ,  Toshiyuki Morii ,  Koji Yoshida

发明人： Hiroyuki Ehara ,  Toshiyuki Morii ,  Koji Yoshida

IPC分类号： G10L19/08 ,  G10L19/14

CPC分类号： G10L19/265 ,  G10L19/08

摘要： Disclosed is an audio encoding device capable of adjusting a spectrum inclination of a quantized noise without changing the Formant weight. The device includes: an HPF (131) which extracts a high-frequency component of the frequency region from an input audio signal; a high-frequency energy level calculation unit (132) which calculates an energy level of the high-frequency component in a frame unit; an LPF (133) which extracts a low-frequency component of the frequency region from the input audio signal; a low-energy level calculation unit (134) which calculates an energy level of a low-frequency component in a frame unit; an inclination correction coefficient calculation unit (141) multiplies the difference between SNR of the high-frequency component and SNR of the low-frequency component inputted from an adder (140) by a constant and adds a bias component to the product so as to calculate an inclination correction coefficient ?3. The inclination correction coefficient is used for adjusting the spectrum inclination of a quantized noise.

摘要翻译： 公开了能够在不改变共振峰重量的情况下调整量化噪声的频谱倾斜度的音频编码装置。 该装置包括：HPF（131），其从输入音频信号中提取频率区域的高频分量; 高频能量计算单元，其计算帧单位中的高频分量的能级; LPF（133），其从所述输入音频信号中提取所述频率区域的低频分量; 低能量计算单元（134），其计算帧单位中的低频分量的能级; 倾斜校正系数计算单元（141）将从加法器（140）输入的低频分量的SNR与高频成分的SNR之差乘以常数，并将偏置分量加到乘积上，以计算 倾斜校正系数α3。 倾斜校正系数用于调整量化噪声的频谱倾斜度。

公开(公告)号：US06687666B2

公开(公告)日：2004-02-03

申请号：US09729229

申请日：2000-12-05

申请人： Hiroyuki Ehara ,  Toshiyuki Morii

发明人： Hiroyuki Ehara ,  Toshiyuki Morii

IPC分类号： G10L1904

CPC分类号： G10L19/12 ,  G10L2019/0005

摘要： A CELP type voice encoding device and a CELP type encoding device. Both the CELP type encoding device and the CELP type encoding device have a noise code book that can be searched in two modes in accordance with linear predictive analysis results, a pitch gain and a pitch cycle, all of which are obtained as analysis results of an input voice. Also the number of pulses forming a noise code vector is switched between a first case where a variation in pitch cycle is small througtout continuous sub-frames and in a second case where the variation is not small througtout continuous sub-frames.

摘要翻译： CELP型语音编码装置和CELP型编码装置。 CELP型编码装置和CELP型编码装置都具有可以根据线性预测分析结果，音调增益和音调周期的两种模式搜索的噪声码本，所有这些都作为分析结果获得 输入声音。 另外，形成噪声编码矢量的脉冲的数量在连续子帧之间的音调周期的变化小的第一种情况和在连续的子帧中变化不小的第二种情况下切换。

公开(公告)号：US08024181B2

公开(公告)日：2011-09-20

申请号：US11573761

申请日：2005-09-02

申请人： Hiroyuki Ehara ,  Toshiyuki Morii

发明人： Hiroyuki Ehara ,  Toshiyuki Morii

IPC分类号： G10L19/02

CPC分类号： G10L19/07 ,  G10L19/24

摘要： There is provided a scalable encoding device capable of realizing a bandwidth scalable LSP encoding with high performance by improving the conversion performance from narrow band LSPs to wide band LSPs. The device includes: an autocorrelation coefficient conversion unit (301) for converting the narrow band LSPs of Mn order to an autocorrelation coefficients of Mn order; an inverse lag window unit (302) for applying a window which has an inverse characteristic of a lag window supposed to be applied to the autocorrelation coefficients; an extrapolation unit (303) for extending the order of the autocorrelation coefficients to (Mn+Mi) order by extrapolating the inverse lag windowed autocorrelation coefficients; an up-sample unit (304) for performing an up-sample process in the autocorrelation domain which is equivalent to an up-sample process in a time domain for the autocorrelation coefficients of the (Mn+Mi) order so as to obtain autocorrelation coefficients of Mw order; a lag window unit (305) for applying a lag window to the autocorrelation coefficients of Mw order; and an LSP conversion unit (306) for converting the lag windowed autocorrelation coefficients into LSPs.

摘要翻译： 提供了一种通过提高从窄带LSP到宽带LSP的转换性能而能够以高性能实现带宽可伸缩LSP编码的可扩展编码装置。 该装置包括：用于将Mn阶的窄带LSP转换为Mn阶的自相关系数的自相关系数转换单元（301） 用于应用具有应用于自相关系数的滞后窗的逆特性的窗口的逆时滞窗单元（302）; 外推单元（303），用于通过推断逆滞后窗自相关系数来将自相关系数的顺序延伸到（Mn + Mi）阶; 用于在自相关域中执行与在时域中的上采样处理相匹配的（Mn + Mi）阶的自相关系数的上采样处理的上采样单元（304），以获得自相关系数 的Mw顺序; 用于将滞后窗口应用于Mw阶数的自相关系数的滞后窗单元（305）; 以及用于将滞后窗自相关系数转换成LSP的LSP转换单元（306）。

公开(公告)号：US20110125495A1

公开(公告)日：2011-05-26

申请号：US12990697

申请日：2009-06-18

申请人： Toshiyuki Morii ,  Hiroyuki Ehara ,  Koji Yoshida

发明人： Toshiyuki Morii ,  Hiroyuki Ehara ,  Koji Yoshida

IPC分类号： G10L19/00

CPC分类号： G10L19/008 ,  G10L25/27

摘要： Disclosed are a quantizer, encoder, and the methods thereof, wherein the computational load is reduced when the values related to the transform coefficients of the principal component analysis transform are quantized when a principal component analysis transform is applied to code stereo. A quantizer (110) is comprised of a power correlation calculation unit (111) which calculates the power (C11) of the left channel signal, the power (C22) of the right channel signal, and the correlation (C12) between the left channel signal and the right channel signal; an intermediate value calculation unit (112) which calculates the intermediate value (C1122) which is the difference between the power (C11) and the power (C22); a codebook (113) which holds a plurality of sets of the coefficients ?1,n,?2,n related to the transform coefficients of the principal component analysis transform and the code; and a quantizer (114) which calculates the sum of the first multiplication result obtained by multiplying the coefficient ?1,n by the correlation value C12 and the second multiplication result obtained by multiplying the coefficient ?1,n by the intermediate value C1122 as the cost function E, selects the coefficients ?1,n,?2,n where the cost function E becomes the maximum, and fetches the code related to the selected coefficients ?1,n,?2,n as the quantized code.

摘要翻译： 公开了一种量化器，编码器及其方法，其中当将主分量分析变换应用于代码立体声时，当与主成分分析变换的变换系数相关的值被量化时，计算负荷减小。 量化器（110）包括功率相关计算单元（111），其计算左声道信号的功率（C11），右声道信号的功率（C22）和左声道信号之间的相关性（C12） 信号和右声道信号; 计算作为功率（C11）和功率（C22）之间的差的中间值（C1122）的中间值计算单元（112）。 保存与主成分分析变换和代码的变换系数有关的多组系数α1，n，α2，n的码本（113）; 以及量化器（114），其计算通过将系数α1，n乘以相关值C12获得的第一相乘结果与通过将系数α1，n乘以中间值C1122而获得的第二乘法结果的和作为 成本函数E选择成本函数E变为最大的系数α1，n，β2，n，并且取出与所选择的系数α1，n，φ2，n相关的代码作为量化代码。