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：US20130148749A1

公开(公告)日：2013-06-13

申请号：US13313336

申请日：2011-12-07

申请人： Udar Mittal ,  James P. Ashley

发明人： Udar Mittal ,  James P. Ashley

IPC分类号： H04L27/00

CPC分类号： G10L19/10 ,  G10L19/038 ,  H03M7/3059

摘要： A method and apparatus are for performing one of encoding and decoding a code word that is used to communicate a portion of a signal. For encoding, at least a portion of a code word is encoded from a signal based value using an approximation of a combinatorial function, wherein the signal based value represents one or more aspects of a signal. For decoding, at least a portion of a code word is decoded to a signal based value using an approximation of a combinatorial function, wherein the signal based value represents one or more aspects of a signal. The approximation of the combinatorial function is based on a linear combination of a set of basis functions.

摘要翻译： 一种方法和装置用于执行编码和解码用于传送信号的一部分的码字。 对于编码，使用组合函数的近似，从基于信号的值对码字的至少一部分进行编码，其中基于信号的值表示信号的一个或多个方面。 为了解码，使用组合函数的近似将码字的至少一部分解码为基于信号的值，其中基于信号的值表示信号的一个或多个方面。 组合函数的近似是基于一组基函数的线性组合。

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：US20120278085A1

公开(公告)日：2012-11-01

申请号：US13379054

申请日：2011-12-15

申请人： Sebastian Näslund ,  Volodya Grancharov ,  Erik Norvell

发明人： Sebastian Näslund ,  Volodya Grancharov ,  Erik Norvell

IPC分类号： G10L19/02

CPC分类号： G10L19/02 ,  G10L19/0212 ,  G10L19/035 ,  G10L19/038 ,  G10L19/10

摘要： The embodiments of the present invention improves conventional attenuation schemes by replacing constant attenuation with an adaptive attenuation scheme that allows more aggressive attenuation, without introducing audible change of signal frequency characteristics.

摘要翻译： 本发明的实施例通过用允许更积极衰减的自适应衰减方案代替恒定衰减来改进常规衰减方案，而不引入信号频率特性的可听见的改变。

公开(公告)号：US20120086586A1

公开(公告)日：2012-04-12

申请号：US13325993

申请日：2011-12-14

申请人： Fuwei Ma ,  Dejun Zhang ,  Minjie Xie ,  Qing Zhang

发明人： Fuwei Ma ,  Dejun Zhang ,  Minjie Xie ,  Qing Zhang

IPC分类号： H03M7/30

CPC分类号： G10L19/113 ,  G10L19/002 ,  G10L19/04 ,  G10L19/10 ,  G10L19/12 ,  G10L2019/0016 ,  H03M7/30 ,  H03M7/40 ,  H03M7/4068

摘要： The present invention discloses a method and a device for pulse encoding, and a method and a device for pulse decoding. The method for pulse encoding includes: calculating an index value of an input pulse; selecting an adjustment threshold value according to the number of pulses, and comparing the index value of the pulse with the adjustment threshold value; if the index value is smaller than the adjustment threshold value, adopting the first number of encoding bits to encode the index value, if the index value is not smaller than the adjustment threshold value, adopting the second number of encoding bits to encode the index value plus an offset value, where the first number is smaller than the second number, the first number and the second number are both positive integers, and the offset value is greater than or equal to the adjustment threshold value.

摘要翻译： 本发明公开了一种用于脉冲编码的方法和装置，以及用于脉冲解码的方法和装置。 脉冲编码方法包括：计算输入脉冲的指标值; 根据所述脉冲数选择调整阈值，并将所述脉冲的指标值与所述调整阈值进行比较; 如果索引值小于调整阈值，则采用第一数量的编码比特来对索引值进行编码，如果索引值不小于调整阈值，则采用第二数量的编码比特来对索引值进行编码 加上偏移值，其中第一个数字小于第二个数字，第一个数字和第二个数字都是正整数，偏移量大于或等于调整阈值。

公开(公告)号：US20100049512A1

公开(公告)日：2010-02-25

申请号：US12518375

申请日：2007-12-14

申请人： Masahiro Oshikiri ,  Tomofumi Yamanashi

发明人： Masahiro Oshikiri ,  Tomofumi Yamanashi

IPC分类号： G10L21/06

CPC分类号： G10L19/10 ,  G10L19/038 ,  H03M7/3082

摘要： Disclosed is an encoding device and others capable of suppressing quantization distortion while suppressing increase of a bit rate when encoding audio or the like. In the device, a dynamic range calculation unit (12) calculates a dynamic range of an input spectrum as an index indicating a peak of the input spectrum, a pulse quantity decision unit (13) decides the number of pulses of a vector candidate outputted from a shape codebook (14), and a shape codebook (14) outputs a vector candidate having the number of pulses decided by the pulse quantity decision unit (13) according to control from the search unit (17) by using a vector candidate element {−1, 0, +1}.

摘要翻译： 公开了一种能够抑制量化失真同时抑制编码音频等时的比特率增加的编码装置等。 在该装置中，动态范围计算单元（12）计算输入频谱的动态范围，作为表示输入频谱的峰值的指标，脉冲量决定单元（13）决定从 形状码本（14）和形状码本（14）根据来自搜索单元（17）的控制，通过使用矢量候选元素（9）输出具有由脉冲数量决定单元（13）决定的脉冲数的矢量候选， -1，0，+1}。

公开(公告)号：US20100023326A1

公开(公告)日：2010-01-28

申请号：US12573584

申请日：2009-10-05

申请人： Daniel Lin ,  Brian M. McCarthy

发明人： Daniel Lin ,  Brian M. McCarthy

IPC分类号： G10L19/00

CPC分类号： G10L19/20 ,  G10L19/06 ,  G10L19/09 ,  G10L19/10 ,  G10L25/90

摘要： The present invention is a synthetic speech encoding device that produces a synthetic speech signal which closely matches an actual speech signal. The actual speech signal is digitized, and excitation pulses are selected by minimizing the error between the actual and synthetic speech signals. The preferred pattern of excitation pulses needed to produce the synthetic speech signal is obtained by using an excitation pattern containing a multiplicity of weighted pulses at timed positions. The selection of the location and amplitude of each excitation pulse is obtained by minimizing an error criterion between the synthetic speech signal and the actual speech signal. The error criterion function incorporates a perceptual weighting filter which shapes the error spectrum.

摘要翻译： 本发明是一种合成语音编码装置，其产生与实际语音信号紧密匹配的合成语音信号。 实际语音信号被数字化，并且通过最小化实际和合成语音信号之间的误差来选择激励脉冲。 通过使用在定时位置处包含多个加权脉冲的激励模式来获得产生合成语音信号所需的激励脉冲的优选模式。 通过最小化合成语音信号和实际语音信号之间的误差标准来获得每个激励脉冲的位置和振幅的选择。 错误标准函数包含形成误差谱的感知加权滤波器。

公开(公告)号：US20090240494A1

公开(公告)日：2009-09-24

申请号：US12306750

申请日：2007-06-28

申请人： Toshiyuki Morii

发明人： Toshiyuki Morii

IPC分类号： G10L19/10 ,  G10L19/08

CPC分类号： G10L19/10 ,  G10L2019/0013

摘要： Provided is a voice encoding device which performs voice encoding by a fixed code book effectively using a bit. In the voice encoding device, a position/polarity calculation unit (205) in a search loop (204) calculates a pulse position and polarity by using values of yH and HH. Moreover, a correlation value/sound source power calculation unit (206) extracts the value of the pulse position calculated by the position/polarity calculation unit (205) using yH and HH and calculates the correlation value and the sound source power. A search loop (207) successively calculates a position, polarity, a correlation value, and a sound source power of other pulses by using the pulse position and the polarity calculated by the position/polarity calculation unit (205) and the correlation value and the sound source power calculated by the correlation value/sound source power calculation unit (206). A large/small judging unit (208) compares a correlation value calculated by the search loop (207) to the value of function C obtained by using the sound source power and searches for a combination of the pulse positions largest in the entire search loop (204).

摘要翻译： 提供了一种语音编码装置，其通过使用位的有效的固定码本进行语音编码。 在语音编码装置中，搜索循环（204）中的位置/极性计算单元（205）通过使用yH和HH的值来计算脉冲位置和极性。 此外，相关值/声源功率计算单元（206）使用yH和HH提取由位置/极性计算单元（205）计算的脉冲位置的值，并计算相关值和声源功率。 搜索循环（207）通过使用由位置/极性计算单元（205）计算的脉冲位置和极性以及相关值和相关值，连续计算其他脉冲的位置，极性，相关值和声源功率， 由相关值/声源功率计算单元（206）计算的声源功率。 大/小判断单元（208）将通过搜索循环（207）计算的相关值与通过使用声源功率获得的函数C的值进行比较，并搜索整个搜索循环中最大的脉冲位置的组合（ 204）。

公开(公告)号：US20090132247A1

公开(公告)日：2009-05-21

申请号：US12357093

申请日：2009-01-21

申请人： Kazutoshi YASUNAGA ,  Toshiyuki MORII

发明人： Kazutoshi YASUNAGA ,  Toshiyuki MORII

IPC分类号： G10L19/00

CPC分类号： G10L19/10 ,  G10L19/107 ,  G10L19/12

摘要： A target vector is coded by multi-stage vector quantization. A first stage of the coding of the target vector uses a first code vector stored in a first codebook. A scalar associated with a code of each first code vector is stored. A third code vector is determined by multiplying a second code vector stored in a second codebook and the scalar together, performing distance calculation using the target vector, the first code vector and the third code vector, and performing a second stage of the coding of the target vector using a result of the distance calculation.

摘要翻译： 目标矢量由多级矢量量化编码。 目标矢量的编码的第一阶段使用存储在第一码本中的第一码矢量。 存储与每个第一代码矢量的代码相关联的标量。 通过将存储在第二码本中的第二代码矢量与标量相乘在一起来确定第三代码矢量，使用目标矢量，第一代码矢量和第三代码矢量进行距离计算，并且执行第二代码矢量的编码 目标矢量使用距离计算的结果。

公开(公告)号：US20080297382A1

公开(公告)日：2008-12-04

申请号：US12127173

申请日：2008-05-27

申请人： Lars Risbo

发明人： Lars Risbo

IPC分类号： H03M5/08

CPC分类号： H03M5/08 ,  G10L19/10

摘要： Digital audio circuitry including modulation circuitry (35; 135) for generating a pulse-width modulated (PWM) signal from processed pulse-code modulated (PCM) audio signals. The modulation circuitry includes a duration quantizer function (32) that generates a sequence of duration values d(k) from received PCM samples, quantized to integer multiples of periods of a master PWM clock (CLKpwm). The duration quantizer function also produces a feedback PCM value x(k) from each quantized duration value d(k) that is applied to a loop filter (36), the output of which modifies the received PCM sample stream to suppress quantization noise. Transient effects caused by modulation or abrupt changes in the desired PWM period are suppressed by digitally filtering (34; 134) the PWM period sample stream.

摘要翻译： 数字音频电路包括用于从经处理的脉码调制（PCM）音频信号产生脉冲宽度调制（PWM）信号的调制电路（35; 135）。 调制电路包括持续时间量化器功能（32），其从接收的PCM采样生成持续时间值d（k）的序列，量化到主PWM时钟（CLKpwm）的周期的整数倍。 持续时间量化器功能还从施加到环路滤波器（36）的每个量化持续时间值d（k）产生反馈PCM值x（k），其输出修改接收的PCM采样流以抑制量化噪声。 通过PWM周期采样流的数字滤波（34; 134）来抑制由期望的PWM周期中的调制或突然变化引起的瞬态效应。