公开(公告)号：US06385576B2

公开(公告)日：2002-05-07

申请号：US09220062

申请日：1998-12-23

申请人： Tadashi Amada ,  Kimio Miseki

发明人： Tadashi Amada ,  Kimio Miseki

IPC分类号： G10L1908

CPC分类号： G10L19/10

摘要： A speech encoding method in which information representing characteristics of a synthesis filter is generated based on an input speech signal in units of one frame. A pitch vector is generated from an adaptive codebook containing past excitation signals, and a first number of reduced pulse position candidates are generated by selecting a first number of pulse positions from a number of possible pulse positions in each of sub-frames obtained by dividing the frame, where a density of the reduced pulse position candidates is high where the pitch vector has a large power and decreases in accordance with a decrease in the power. A second number of pulse positions is selected from the reduced pulse position candidates to generate a pulse train having a plurality of pulses located at pulse positions corresponding to a second number of pulse positions under the criterion of minimizing an error between the input speech signal and a synthesis signal which is an output of the synthesis filter whose input is an excitation signal generated by adding the pitch vector and the pulse train.

摘要翻译： 一种语音编码方法，其中基于一帧的单位的输入语音信号来生成表示合成滤波器的特性的信息。 从包含过去的激励信号的自适应码本生成音调矢量，并且通过从通过划分所得到的每个子帧中的每个子帧中的多个可能的脉冲位置中选择第一数量的脉冲位置来生成第一数量的缩小脉冲位置候选 帧，其中缩小脉冲位置候选的密度高，其中音调矢量具有大的功率，并且根据功率的降低而减小。 从缩小的脉冲位置候选中选择第二数量的脉冲位置，以产生脉冲序列，该脉冲串具有位于与第二数量的脉冲位置相对应的脉冲位置的多个脉冲，该标准在最小化输入语音信号与a 合成信号是合成滤波器的输出，其输入是通过将音调矢量和脉冲串相加而产生的激励信号。

公开(公告)号：US5150387A

公开(公告)日：1992-09-22

申请号：US630911

申请日：1990-12-20

申请人： Hidetaka Yoshikawa ,  Kimio Miseki ,  Masami Akamine

发明人： Hidetaka Yoshikawa ,  Kimio Miseki ,  Masami Akamine

IPC分类号： H04B1/66

CPC分类号： H04B1/667 ,  G10L19/24

摘要： In a transmitter in the present invention, an input signal is input to a QMF bank 102 where the input signal is divided to a plurality of frequency bands to form corresponding band signals. A distributed bit calculating unit 109 calculates respective bit rates with which the corresponding band signals are encoded on the respective power values of the band signals. Quantizers 104-1, 104-2, . . . , 104-n encode the respective band signals at the corresponding bit rates and input the resulting corresponding band codes to a multiplexer unit 111 which incorporates the respective band codes into a cell as an information unit and sends the cell. In a receiver, a cell is decomposed to obtain the respective band codes, which are then dequantized to form the corresponding band signals. These band signals are synthesized to form a signal for the entire band, and the signal for the entire band is output as a decoded signal.

摘要翻译： 在本发明的发射机中，将输入信号输入到QMF组102，其中输入信号被划分成多个频带以形成相应的频带信号。 分布位计算单元109计算相应频带信号对频带信号的各个功率值进行编码的各个比特率。 量子化器104-1,104-2， 。 。 ，104-n以对应的比特率对各个频带信号进行编码，并将所得到的相应频带码输入到将各频带码合并到一个小区中作为信息单元的多路复用单元111，并发送该小区。 在接收机中，单元被分解以获得相应的频带码，然后将它们去量化以形成相应的频带信号。 这些频带信号被合成以形成整个频带的信号，并且将整个频带的信号作为解码信号输出。

公开(公告)号：US08041563B2

公开(公告)日：2011-10-18

申请号：US11825636

申请日：2007-07-05

申请人： Hirokazu Takeuchi ,  Kimio Miseki ,  Masataka Osada

发明人： Hirokazu Takeuchi ,  Kimio Miseki ,  Masataka Osada

IPC分类号： G10L19/02 ,  G10L11/06

CPC分类号： G10L19/035

摘要： Activity is determined for each frequency band in a frame, and when it is determined that an activity-OFF state has not continued for a predetermined number of times for preceding frames, normal coding processing is performed for the frequency band. When it is determined that the activity-OFF state has continued for the predetermined number of times or more, DTX coding is performed for the frequency band. After this processing has been performed for all of the bands of one frame, a total power of the one entire frame and the power of the band or bands to which the DTX coding is applied are calculated. Subsequently, a new target bit value is calculated based on a ratio of the total power of the one entire frame and the power of the band or bands to which the DTX coding is applied.

摘要翻译： 对于帧中的每个频带确定活动，并且当确定活动关闭状态对于先前帧没有持续预定次数时，对频带进行正常编码处理。 当确定活动关闭状态持续了预定次数以上时，对频带进行DTX编码。 在对一帧的所有频带执行该处理之后，计算一个整帧的总功率和应用DTX编码的频带或频带的功率。 随后，基于一个整帧的总功率与施加DTX编码的频带或频带的功率的比率来计算新的目标比特值。

公开(公告)号：US07443978B2

公开(公告)日：2008-10-28

申请号：US10654400

申请日：2003-09-04

申请人： Takehiko Isaka ,  Kimio Miseki ,  Takashi Obara

发明人： Takehiko Isaka ,  Kimio Miseki ,  Takashi Obara

IPC分类号： H04M9/08

CPC分类号： G10L21/0208 ,  G10L19/18 ,  G10L2021/02082

摘要： There is disclosed an audio coding apparatus which has a wideband encoder and noise canceller. The encoder includes a high-frequency audio coder and low-frequency audio coder. The low-frequency audio coder includes a low-frequency noise canceller. When the high-frequency audio coder is disabled, the noise canceller is disabled, and allows a digital audio signal to pass through it and outputs that signal to the encoder. When the high-frequency audio coder is enabled, the low-frequency noise canceller is disabled, and allows a digital audio signal to pass through it.

摘要翻译： 公开了一种具有宽带编码器和噪声消除器的音频编码装置。 编码器包括高频音频编码器和低频音频编码器。 低频音频编码器包括低频噪声消除器。 当高频音频编码器被禁用时，噪声消除器被禁用，并且允许数字音频信号通过它并将该信号输出到编码器。 当启用高频音频编码器时，低频噪声消除器被禁用，并允许数字音频信号通过它。

公开(公告)号：US20080130907A1

公开(公告)日：2008-06-05

申请号：US11947683

申请日：2007-11-29

申请人： Takashi Sudo ,  Kimio Miseki

发明人： Takashi Sudo ,  Kimio Miseki

IPC分类号： H04B3/23

CPC分类号： G10L21/0208 ,  H04M9/082

摘要： According to one embodiment, An information processing apparatus includes a first signal input unit configure to receive a first signal, a second signal input unit configure to receive a signal, a first control unit configure to acquire system resources, a second control unit configure to select, in accordance with information of the system resources acquired by the first control unit, a processing method for suppressing at least one of echo and noise of the second signal input from the second signal input unit containing the echo due to the first signal input from the first signal input unit, a third control unit configure to generate an output signal by suppressing at least one of the echo and the noise from the second signal by the processing method selected by the second control unit, and a signal output unit configure to output the output signal generated by the third control unit.

摘要翻译： 根据一个实施例，信息处理设备包括配置为接收第一信号的第一信号输入单元，配置为接收信号的第二信号输入单元，配置为获取系统资源的第一控制单元，配置为选择 根据由第一控制单元获取的系统资源的信息，用于抑制从包含回波的第二信号输入单元输入的第二信号的回波和噪声中的至少一个的处理方法，该第二信号输入单元由于从第 第一信号输入单元，第三控制单元，被配置为通过由第二控制单元选择的处理方法从第二信号抑制回波和噪声中的至少一个来产生输出信号，以及信号输出单元， 由第三控制单元产生的输出信号。

公开(公告)号：US07058574B2

公开(公告)日：2006-06-06

申请号：US11000268

申请日：2004-12-01

申请人： Takayuki Taniguchi ,  Yuriko Tsukahara ,  Kimio Miseki

发明人： Takayuki Taniguchi ,  Yuriko Tsukahara ,  Kimio Miseki

IPC分类号： G10L19/00

CPC分类号： G10L19/18 ,  G10L21/0208

摘要： In a signal processing apparatus, a speech coder includes, as three sections for coding speech data by different algorithm, an Algorithm-A coding section, an Algorithm-B coding section and an Algorithm-C coding section. A noise suppressor includes, as three sections for suppressing background noise by different algorithm, an Algorithm-X noise suppress section, an Algorithm-Y noise suppress section and an Algorithm-Z noise suppress section. A suppress algorithm switching control section controls switching on the basis of information from a coding algorithm switching control section such that an optimal one of the noise suppress sections may function in association with the coding section activated in the speech coder.

摘要翻译： 在信号处理装置中，语音编码器包括作为用于通过不同算法编码语音数据的三个部分，算法-A编码部分，算法B编码部分和算法C编码部分。 噪声抑制器包括作为用于通过不同算法抑制背景噪声的三个部分，算法-X噪声抑制部分，算法Y噪声抑制部分和算法Z噪声抑制部分。 抑制算法切换控制部控制基于来自编码算法切换控制部的信息的切换，使得噪声抑制部中的最佳的一个可以与在语音编码器中激活的编码部相关联起作用。

公开(公告)号：US20050096904A1

公开(公告)日：2005-05-05

申请号：US11000268

申请日：2004-12-01

申请人： Takayuki Taniguchi ,  Yuriko Tsukahara ,  Kimio Miseki

发明人： Takayuki Taniguchi ,  Yuriko Tsukahara ,  Kimio Miseki

IPC分类号： G10L19/00 ,  G10L19/14 ,  G10L21/02 ,  H03M7/30 ,  G10L21/00

CPC分类号： G10L19/18 ,  G10L21/0208

摘要： In a signal processing apparatus, a speech coder includes, as three sections for coding speech data by different algorithm, an Algorithm-A coding section, an Algorithm-B coding section and an Algorithm-C coding section. A noise suppressor includes, as three sections for suppressing background noise by different algorithm, an Algorithm-X noise suppress section, an Algorithm-Y noise suppress section and an Algorithm-Z noise suppress section. A suppress algorithm switching control section controls switching on the basis of information from a coding algorithm switching control section such that an optimal one of the noise suppress sections may function in association with the coding section activated in the speech coder.

摘要翻译： 在信号处理装置中，语音编码器包括作为用于通过不同算法编码语音数据的三个部分，算法-A编码部分，算法B编码部分和算法C编码部分。 噪声抑制器包括作为用于通过不同算法抑制背景噪声的三个部分，算法-X噪声抑制部分，算法Y噪声抑制部分和算法Z噪声抑制部分。 抑制算法切换控制部控制基于来自编码算法切换控制部的信息的切换，使得噪声抑制部中的最佳的一个可以与在语音编码器中激活的编码部相关联起作用。

公开(公告)号：US20050055116A1

公开(公告)日：2005-03-10

申请号：US10654400

申请日：2003-09-04

申请人： Takehiko Isaka ,  Kimio Miseki ,  Takashi Obara

发明人： Takehiko Isaka ,  Kimio Miseki ,  Takashi Obara

IPC分类号： G10L19/14 ,  G10L21/02 ,  G06F17/00 ,  H04B15/00

CPC分类号： G10L21/0208 ,  G10L19/18 ,  G10L2021/02082

摘要： There is disclosed an audio coding apparatus which has a wideband encoder and noise canceller. The encoder includes a high-frequency audio coder and low-frequency audio coder. The low-frequency audio coder includes a low-frequency noise canceller. When the high-frequency audio coder is disabled, the noise canceller is disabled, and allows a digital audio signal to pass through it and outputs that signal to the encoder. When the high-frequency audio coder is enabled, the low-frequency noise canceller is disabled, and allows a digital audio signal to pass through it.

摘要翻译： 公开了一种具有宽带编码器和噪声消除器的音频编码装置。 编码器包括高频音频编码器和低频音频编码器。 低频音频编码器包括低频噪声消除器。 当高频音频编码器被禁用时，噪声消除器被禁用，并且允许数字音频信号通过它并将该信号输出到编码器。 当启用高频音频编码器时，低频噪声消除器被禁用，并允许数字音频信号通过它。

公开(公告)号：US06704702B2

公开(公告)日：2004-03-09

申请号：US09726562

申请日：2000-12-01

申请人： Masahiro Oshikiri ,  Kimio Miseki ,  Masami Akamine

发明人： Masahiro Oshikiri ,  Kimio Miseki ,  Masami Akamine

IPC分类号： G10L1104

CPC分类号： G10L25/93 ,  G10L19/09 ,  G10L25/78

摘要： A speech encoding method, apparatus and program wherein an input speech signal is divided into a plurality of frames each having a predetermined length, each of the frames is subdivided into a plurality of subframes, a predictive pitch period of a subframe in a to-be-encoded current frame is obtained by using pitch periods of at least two frames of the current frame and past and future frames with respect to the current frame; a pitch period of a subframe in the current frame is obtained by using the predictive pitch period, a relative pitch pattern codebook storing a plurality of relative pitch patterns representing fluctuations in pitch periods of a plurality of subframes is prepared, and a change in pitch period of plural subframes is expressed with one relative pitch pattern selected from the relative pitch pattern codebook.

摘要翻译： 一种语音编码方法，装置和程序，其中输入语音信号被划分为具有预定长度的多个帧，每个帧被细分为多个子帧，子帧的预测音调周期 通过使用当前帧的至少两帧的音调周期和相对于当前帧的过去和未来帧来获得编码的当前帧; 通过使用预测音调周期来获得当前帧中的子帧的音调周期，准备存储表示多个子帧的音调周期的波动的多个相对音调模式的相对音调模式码本，并且音调周期的变化 由相对的音调图案码本中选择的一个相对音调图形来表示多个子帧。

公开(公告)号：US6167375A

公开(公告)日：2000-12-26

申请号：US39317

申请日：1998-03-16

申请人： Kimio Miseki ,  Masahiro Oshikiri ,  Tadashi Amada ,  Masami Akamine

发明人： Kimio Miseki ,  Masahiro Oshikiri ,  Tadashi Amada ,  Masami Akamine

IPC分类号： G10L19/00 ,  G10L19/02

CPC分类号： G10L19/012 ,  G10L19/02

摘要： A method for encoding speech wherein an input speech signal is separated by a component separator into a first component mainly constituted by speech and a second component mainly constituted by a background noise at each predetermined unit of time, a bit allocation selector selects bit allocation for each component based on the first and second components from among a plurality of predetermined candidates for bit allocation, a speech encoder and a noise encoder encode the first and second components from the component separator based on the bit allocation according to predetermined different methods for encoding, and a multiplexer multiplexes encoded data of the first and second components and information on the bit allocation and outputs them as transmitted encoded data.

摘要翻译： 一种编码语音的方法，其中输入语音信号由分量分离器分离成主要由语音构成的第一分量和主要由每个预定单位时间的背景噪声构成的第二分量，比特分配选择器选择每个 基于来自用于比特分配的多个预定候选中的第一和第二分量的分量，语音编码器和噪声编码器根据预定的不同编码方法基于比特分配对来自分量分离器的第一和第二分量进行编码，以及 复用器复用第一和第二分量的编码数据和关于比特分配的信息，并将其作为发送的编码数据输出。