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    Apparatus and method for transmitting audio signals
    1.
    发明申请
    Apparatus and method for transmitting audio signals 审中-公开
    用于传输音频信号的装置和方法

    公开(公告)号：US20070088546A1

    公开(公告)日：2007-04-19

    申请号：US11519219

    申请日：2006-09-12

    申请人： Geun-Bae Song ,  Jae-Bum Kim ,  Chul-Yong Ahn ,  Ho-Chong Park

    发明人： Geun-Bae Song ,  Jae-Bum Kim ,  Chul-Yong Ahn ,  Ho-Chong Park

    IPC分类号： G10L15/20

    CPC分类号： G10L19/265

    摘要： An apparatus and a method for transmitting audio signals in such a manner that audio signals transmitted and received in a mobile telephone network are preprocessed before being inputted to a voice encoder are provided. The audio signals are preprocessed by using an optimal filter gain based on error signals obtained when the audio signals are preprocessed and outputted by the voice encoder and the synthesizer. Therefore, the sound quality of the audio signals is hardly degraded by the voice encoder.

    摘要翻译： 提供一种用于以这样的方式发送音频信号的装置和方法，即在输入到语音编码器之前，在移动电话网络中发送和接收的音频信号被预处理。 音频信号通过使用基于当音频信号被语音编码器和合成器预处理和输出时获得的误差信号使用最佳滤波器增益来预处理。 因此，语音编码器几乎不会降低音频信号的声音质量。

    Apparatus and method for forwarding voice packet in a digital communication system
    2.
    发明授权
    Apparatus and method for forwarding voice packet in a digital communication system 有权
    用于在数字通信系统中转发语音分组的装置和方法

    公开(公告)号：US08363638B2

    公开(公告)日：2013-01-29

    申请号：US11338888

    申请日：2006-01-25

    申请人： Ho-Chong Park ,  Geun-Bae Song ,  Jae-Bum Kim

    发明人： Ho-Chong Park ,  Geun-Bae Song ,  Jae-Bum Kim

    IPC分类号： H04Q3/00 ,  H04M7/00 ,  H04L29/06

    CPC分类号： H04L29/06027 ,  H04L65/605 ,  H04L65/607

    摘要： A voice packet forwarding apparatus and method is provided in a digital communication system including a switched vocoder module to directly pass a voice packet received from a packet terminal to a digital communication network or a PCM signal decoded from the voice packet to the digital communication network. The switched vocoder module is also provided to directly pass a voice packet received from the digital communication network to the packet terminal or transmit a voice packet coded from a PCM signal received from the digital communication network. In the presence of additional data to be transmitted to the packet terminal, a data inserter is provided to insert the additional data in the voice packet received from the switched vocoder module and transmit the voice packet with the additional data to the packet terminal. A controller is provided to control the switched vocoder module and the data inserter.

    摘要翻译： 在包括切换声码器模块的数字通信系统中提供语音分组转发装置和方法，以将从分组终端接收的语音分组直接传递到数字通信网络或从语音分组解码的PCM信号到数字通信网络。 还提供了切换声码器模块以将从数字通信网络接收到的语音分组直接传送到分组终端，或者传送从数字通信网络接收的PCM信号编码的语音分组。 在存在要发送到分组终端的附加数据的情况下，提供数据插入器以将附加数据插入从切换的声码器模块接收的语音分组中，并将具有附加数据的语音分组发送到分组终端。 提供控制器来控制切换的声码器模块和数据插入器。

    Apparatus and method for forwarding voice packet in a digital communication system
    3.
    发明申请
    Apparatus and method for forwarding voice packet in a digital communication system 有权

    公开(公告)号：US20060182091A1

    公开(公告)日：2006-08-17

    申请号：US11338888

    申请日：2006-01-25

    申请人： Ho-Chong Park ,  Geun-Bae Song ,  Jae-Bum Kim

    发明人： Ho-Chong Park ,  Geun-Bae Song ,  Jae-Bum Kim

    IPC分类号： H04L12/66 ,  H04L12/54

    CPC分类号： H04L29/06027 ,  H04L65/605 ,  H04L65/607

    摘要： A voice packet forwarding apparatus and method is provided in a digital communication system including a switched vocoder module to directly pass a voice packet received from a packet terminal to a digital communication network or a PCM signal decoded from the voice packet to the digital communication network. The switched vocoder module is also provided to directly pass a voice packet received from the digital communication network to the packet terminal or transmit a voice packet coded from a PCM signal received from the digital communication network. In the presence of additional data to be transmitted to the packet terminal, a data inserter is provided to insert the additional data in the voice packet received from the switched vocoder module and transmit the voice packet with the additional data to the packet terminal. A controller is provided to control the switched vocoder module and the data inserter.

    Apparatus and method for converting voice packet rate
    4.
    发明申请
    Apparatus and method for converting voice packet rate 审中-公开
    用于转换语音分组速率的装置和方法

    公开(公告)号：US20060212289A1

    公开(公告)日：2006-09-21

    申请号：US11331363

    申请日：2006-01-13

    申请人： Geun-Bae Song ,  Ho-Chong Park ,  Jae-Bum Kim

    发明人： Geun-Bae Song ,  Ho-Chong Park ,  Jae-Bum Kim

    IPC分类号： G10L19/08

    CPC分类号： G10L19/173 ,  G10L19/12 ,  G10L19/24

    摘要： Provided is a voice packet rate converting method and apparatus. The rate of at least one first element of an input voice packet compressed at a first rate is converted to a second rate at a PCM level, and the rate of a second element of the input voice packet is converted to the second rate at a parameter level. An output voice packet compressed at the second rate is generated by combining the first element and second elements at the second rate.

    摘要翻译： 提供了语音分组速率转换方法和装置。 以第一速率压缩的输入语音分组的至少一个第一单元的速率被转换为PCM级的第二速率，并且输入语音分组的第二单元的速率被转换成参数的第二速率 水平。 通过以第二速率组合第一元素和第二元素来产生以第二速率压缩的输出语音分组。

    Apparatus and method for recovering voice packet
    5.
    发明授权
    Apparatus and method for recovering voice packet 有权
    语音包恢复装置及方法

    公开(公告)号：US08520536B2

    公开(公告)日：2013-08-27

    申请号：US11790368

    申请日：2007-04-25

    申请人： Jung-Woo Ku ,  Austin Kim ,  Ho-Chong Park ,  Jae-Bum Kim ,  Chul-Yong Ahn ,  Pavel Martynovich

    发明人： Jung-Woo Ku ,  Austin Kim ,  Ho-Chong Park ,  Jae-Bum Kim ,  Chul-Yong Ahn ,  Pavel Martynovich

    IPC分类号： H04L12/26

    CPC分类号： H04L12/66

    摘要： An apparatus and method for recovering lost voice packets are provided, in which a packet loss detector determines whether a received packet has been lost, packet information storage stores voice information of previous voice packets and voice information of the received voice packet, a packet error corrector measures the voice information of the received voice packet, stores the measured voice information in the packet information storage, corrects the voice information when necessary, and generates a corrected voice packet, if the received voice packet is normal, and a packet loss recoverer recovers the voice information of the received voice packet using the voice information of previous voice packets stored in the packet information storage and generates a recovered voice packet, if the received voice packet has been lost.

    摘要翻译： 提供了一种用于恢复丢失语音分组的装置和方法，其中分组丢失检测器确定接收的分组是否已经丢失，分组信息存储存储先前语音分组的语音信息和接收的语音分组的语音信息，分组误差校正器 测量接收到的语音分组的语音信息，将测量的语音信息存储在分组信息存储器中，必要时校正语音信息，并且如果接收的语音分组正常，则生成校正的语音分组，并且分组丢失恢复器恢复 使用存储在分组信息存储器中的先前语音分组的语音信息的接收到的语音分组的语音信息，并且如果接收到的语音分组已经丢失，则生成恢复的语音分组。

    Apparatus and method for recovering voice packet
    6.
    发明申请
    Apparatus and method for recovering voice packet 有权
    语音包恢复装置及方法

    公开(公告)号：US20070258385A1

    公开(公告)日：2007-11-08

    申请号：US11790368

    申请日：2007-04-25

    申请人： Jung-Woo Ku ,  Austin Kim ,  Ho-Chong Park ,  Jae-Bum Kim ,  Chul-Yong Ahn ,  Pavel Martynovich

    发明人： Jung-Woo Ku ,  Austin Kim ,  Ho-Chong Park ,  Jae-Bum Kim ,  Chul-Yong Ahn ,  Pavel Martynovich

    IPC分类号： H04L12/26

    CPC分类号： H04L12/66

    摘要： An apparatus and method for recovering lost voice packets are provided, in which a packet loss detector determines whether a received packet has been lost, packet information storage stores voice information of previous voice packets and voice information of the received voice packet, a packet error corrector measures the voice information of the received voice packet, stores the measured voice information in the packet information storage, corrects the voice information when necessary, and generates a corrected voice packet, if the received voice packet is normal, and a packet loss recoverer recovers the voice information of the received voice packet using the voice information of previous voice packets stored in the packet information storage and generates a recovered voice packet, if the received voice packet has been lost.

    摘要翻译： 提供了一种用于恢复丢失语音分组的装置和方法，其中分组丢失检测器确定接收的分组是否已经丢失，分组信息存储存储先前语音分组的语音信息和接收的语音分组的语音信息，分组误差校正器 测量接收到的语音分组的语音信息，将测量的语音信息存储在分组信息存储器中，必要时校正语音信息，并且如果接收的语音分组正常，则生成校正的语音分组，并且分组丢失恢复器恢复 使用存储在分组信息存储器中的先前语音分组的语音信息的接收到的语音分组的语音信息，并且如果接收到的语音分组已经丢失，则生成恢复的语音分组。

    Echo canceler and method thereof
    10.
    发明授权
    Echo canceler and method thereof 失效
    回波消除器及其方法

    公开(公告)号：US06181794B2

    公开(公告)日：2001-01-30

    申请号：US08946267

    申请日：1997-10-07

    申请人： Ho-Chong Park ,  Young-Ky Kim

    发明人： Ho-Chong Park ,  Young-Ky Kim

    IPC分类号： H04M908

    CPC分类号： H04B3/23

    摘要： An echo canceler for canceling an echo signal mixed in an input signal received from a hybrid circuit. The echo canceler has a double filter structure comprised of an adaptive filter and a fixed filter. The adaptive filter receives the input signal to generate a first echo estimation signal according to a filter coefficient thereof, and the fixed filter receives the input signal to generate a second echo estimation signal according to a filter coefficient thereof. A first adder subtracts the first echo estimation signal from the input signal to generate a first echo-canceled signal, and a second adder subtracts the second echo estimation signal from the input signal to generate a second echo-canceled signal. A mode selector selectively outputs one of the first and second echo-canceled signals having a relatively more canceled echo component.

    摘要翻译： 一种用于消除混合在从混合电路接收的输入信号中的回波信号的回波消除器。 回波消除器具有由自适应滤波器和固定滤波器组成的双滤波器结构。 自适应滤波器接收输入信号以根据其滤波系数产生第一回波估计信号，并且固定滤波器接收输入信号以根据其滤波器系数产生第二回波估计信号。 第一加法器从输入信号中减去第一回波估计信号以产生第一回波消除信号，第二加法器从输入信号中减去第二回波估计信号以产生第二回波消除信号。 模式选择器选择性地输出具有相对更多取消的回波分量的第一和第二回波消除信号之一。