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11.发明授权公开(公告)号：US08731184B2
公开(公告)日：2014-05-20
申请号：US13471984
申请日：2012-05-15
申请人： Bing Chen , James H. James
发明人： Bing Chen , James H. James
摘要： Test equipment including a signal generator and a method of generating a test signal associated with an overall frequency band are disclosed. Also disclosed is a method of using the test signal to test an echo canceller. The method of generating the test signal includes generating a first time segment associated with a first frequency sub-band of the overall frequency band and generating a second time segment associated with a second frequency sub-band of the overall frequency band. The second frequency sub-band is higher than the first frequency sub-band. The method further includes generating a time gap segment separating the first time segment and the second time segment.
摘要翻译： 公开了包括信号发生器和产生与总频带相关联的测试信号的方法的测试设备。 还公开了使用测试信号来测试回波消除器的方法。 产生测试信号的方法包括产生与整个频带的第一频率子带相关联的第一时间段，并且产生与整个频带的第二频率子带相关联的第二时间段。 第二频率子带高于第一频率子带。 该方法还包括产生分离第一时间段和第二时间段的时间间隔段。
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12.发明申请公开(公告)号：US20110196675A1
公开(公告)日：2011-08-11
申请号：US13050022
申请日：2011-03-17
申请人： Bing Chen , James H. James
发明人： Bing Chen , James H. James
IPC分类号： G10L11/06
CPC分类号： G10L25/93 , G10L15/20 , G10L19/012 , G10L25/21 , G10L25/45 , G10L25/78 , G10L25/84 , G10L2025/935
摘要： A VAD/SS system is connected to a channel of a transmission pipe. The channel provides a pathway for the transmission of energy. A method for operating a VAD/SS system includes detecting the energy on the channel, and activating or suppressing activation of the VAD/SS system depending upon the nature of the energy detected on the channel.
摘要翻译： VAD / SS系统连接到传输管道的通道。 该通道为能量传输提供了一条途径。 用于操作VAD / SS系统的方法包括检测信道上的能量，以及根据在信道上检测到的能量的性质来激活或抑制VAD / SS系统的激活。
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13.发明授权公开(公告)号：US07917356B2
公开(公告)日：2011-03-29
申请号：US10942518
申请日：2004-09-16
申请人： Bing Chen , James H. James
发明人： Bing Chen , James H. James
IPC分类号： G10L11/06
CPC分类号： G10L25/93 , G10L15/20 , G10L19/012 , G10L25/21 , G10L25/45 , G10L25/78 , G10L25/84 , G10L2025/935
摘要： A VAD/SS system is connected to a channel of a transmission pipe. The channel provides a pathway for the transmission of energy. A method for operating a VAD/SS system includes detecting the energy on the channel, and activating or suppressing activation of the VAD/SS system depending upon the nature of the energy detected on the channel.
摘要翻译： VAD / SS系统连接到传输管道的通道。 该通道为能量传输提供了一条途径。 用于操作VAD / SS系统的方法包括检测信道上的能量，以及根据在信道上检测到的能量的性质来激活或抑制VAD / SS系统的激活。
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公开(公告)号：US20100106491A1
公开(公告)日：2010-04-29
申请号：US12647863
申请日：2009-12-28
IPC分类号： G10L11/02
CPC分类号： G10L19/167 , G10L19/012 , G10L25/78 , H04J3/17 , H04L65/1059 , H04L65/80
摘要： The present invention is a system and method that improves upon voice activity detection by packetizing actual noise signals, typically background noise. In accordance with the present invention an access network receives an input voice signal (including noise) and converts the input voice signal into a packetized voice signal. The packetized voice signal is transmitted via a network to an egress network. The egress network receives the packetized voice signal, converts the packetized voice signal into an output voice signal, and outputs the output voice signal. The egress network also extracts and stores noise packets from the received packetized voice signal and converts the packetized noise signal into an output noise signal. When the access network ceases to receive the input voice signal while the call is still ongoing, the access network instructs the egress network to continually output the output noise signal.
摘要翻译： 本发明是一种系统和方法，其通过打包实际的噪声信号（通常是背景噪声）来改善语音活动检测。 根据本发明，接入网接收输入语音信号（包括噪声），并将输入的语音信号转换为分组语音信号。 分组化语音信号经由网络传输到出口网络。 出口网络接收分组语音信号，将分组语音信号转换为输出语音信号，并输出输出语音信号。 出口网络还从接收的分组语音信号中提取并存储噪声分组，并将分组化的噪声信号转换成输出噪声信号。 当接入网络在呼叫仍然进行时停止接收输入语音信号，接入网络指示出口网络连续地输出输出噪声信号。
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公开(公告)号：US20100100375A1
公开(公告)日：2010-04-22
申请号：US12647926
申请日：2009-12-28
IPC分类号： G10L21/02
CPC分类号： G10L21/0272 , G10L19/012 , H04L29/06027 , H04L65/1026 , H04L65/1036
摘要： The present invention is a system and method for packetizing actual noise signals, typically background noise, received by an access gateway from a speaking party and transmitting these packetized noise signals via a network to an egress gateway. The egress gateway converts the packetized noise signal into noise signals suitable for output and transmits the output noise signals to a listening party. When the access gateway detects that no voice signal is being received and only a noise signal is being received for a predetermined period of time, the access gateway instructs the egress network to continually transmit output noise signals to the listening party and ceases to transmit packetized noise signals to the egress gateway.
摘要翻译： 本发明是一种用于将来自话音方接收的接入网关的实际噪声信号（通常为背景噪声）打包并经由网络将这些分组化噪声信号发送到出口网关的系统和方法。 出口网关将分组化噪声信号转换为适合输出的噪声信号，并将输出噪声信号发送到听音方。 当接入网关检测到没有接收到语音信号并且仅在预定时间段内仅接收到噪声信号时，接入网关指示出口网络将输出噪声信号连续发送到听音方，并且不再发送分组噪声 信号到出口网关。
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公开(公告)号：US07664646B1
公开(公告)日：2010-02-16
申请号：US11773699
申请日：2007-07-05
CPC分类号： G10L19/167 , G10L19/012 , G10L25/78 , H04J3/17 , H04L65/1059 , H04L65/80
摘要： The present invention is a system and method that improves upon voice activity detection by packetizing actual noise signals, typically background noise. In accordance with the present invention an access network receives an input voice signal (including noise) and converts the input voice signal into a packetized voice signal. The packetized voice signal is transmitted via a network to an egress network. The egress network receives the packetized voice signal, converts the packetized voice signal into an output voice signal, and outputs the output voice signal. The egress network also extracts and stores noise packets from the received packetized voice signal and converts the packetized noise signal into an output noise signal. When the access network ceases to receive the input voice signal while the call is still ongoing, the access network instructs the egress network to continually output the output noise signal.
摘要翻译： 本发明是一种系统和方法，其通过打包实际的噪声信号（通常是背景噪声）来改善语音活动检测。 根据本发明，接入网接收输入语音信号（包括噪声），并将输入的语音信号转换为分组语音信号。 分组化语音信号经由网络传输到出口网络。 出口网络接收分组语音信号，将分组语音信号转换为输出语音信号，并输出输出语音信号。 出口网络还从接收的分组语音信号中提取并存储噪声分组，并将分组化的噪声信号转换成输出噪声信号。 当接入网络在呼叫仍然进行时停止接收输入语音信号，接入网络指示出口网络连续地输出输出噪声信号。
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17.发明申请公开(公告)号：US20120230474A1
公开(公告)日：2012-09-13
申请号：US13471984
申请日：2012-05-15
申请人： Bing Chen , James H. James
发明人： Bing Chen , James H. James
IPC分类号： H04M1/24
摘要： Test equipment including a signal generator and a method of generating a test signal associated with an overall frequency band are disclosed. Also disclosed is a method of using the test signal to test an echo canceller. The method of generating the test signal includes generating a first time segment associated with a first frequency sub-band of the overall frequency band and generating a second time segment associated with a second frequency sub-band of the overall frequency band. The second frequency sub-band is higher than the first frequency sub-band. The method further includes generating a time gap segment separating the first time segment and the second time segment.
摘要翻译： 公开了包括信号发生器和产生与总频带相关联的测试信号的方法的测试设备。 还公开了使用测试信号来测试回波消除器的方法。 产生测试信号的方法包括产生与整个频带的第一频率子带相关联的第一时间段，并且产生与整个频带的第二频率子带相关联的第二时间段。 第二频率子带高于第一频率子带。 该方法还包括产生分离第一时间段和第二时间段的时间间隔段。
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18.发明授权Method for the performance testing of echo cancellers using an artificial segmented test signal 失效使用人工分段测试信号进行回声消除器性能测试的方法公开(公告)号：US07636436B2
公开(公告)日：2009-12-22
申请号：US10740102
申请日：2003-12-17
申请人： Bing Chen , James H. James
发明人： Bing Chen , James H. James
IPC分类号： H04M9/08
摘要： A method for the performance testing of an echo canceller including the steps of transmitting a test signal to the echo canceller, recording an echo energy signal output from the echo canceller as a result of the test signal, measuring the energy and duration of the echo energy signal and calculating a performance score for the echo canceller based on the measured energy and duration of the echo energy signal, wherein the test signal transmitted to the echo canceller has a plurality of discrete frequency band segments of white noise representing sub-bands of an overall bandwidth ranging from about 0 kHz to about 3.5 kHz. The test signal preferably has four discrete frequency band segments of white noise, wherein each discrete frequency band segment of the test signal is repeated in succession, whereby the test signal has a total of eight segments. Thus, the test signal can have a first frequency band segment having a bandwidth of about 0 kHz to about 1 kHz, a second frequency band segment having a bandwidth of about 1 kHz to about 2 kHz, a third frequency band segment having a bandwidth of about 2 kHz to about 3 kHz and a fourth frequency band segment having a bandwidth of about 3 kHz to about 3.5 kHz.
摘要翻译： 一种用于回波消除器的性能测试的方法，包括以下步骤：将测试信号发送到回波消除器，记录作为测试信号从回声消除器输出的回波能量信号，测量回波能量的能量和持续时间 信号，并且基于所测量的回波能量信号的能量和持续时间来计算回波消除器的性能得分，其中发送到回波消除器的测试信号具有表示整体的子带的白噪声的多个离散频带段 带宽范围从约0 kHz到约3.5 kHz。 测试信号优选地具有白噪声的四个离散频带段，其中连续地重复测试信号的每个离散频带段，由此测试信号共有八个段。 因此，测试信号可以具有带宽为约0kHz至约1kHz的第一频带段，具有大约1kHz至大约2kHz的带宽的第二频带段，带宽为 约2kHz至约3kHz的频带段和具有约3kHz至约3.5kHz的带宽的第四频带段。
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公开(公告)号：US07154867B1
公开(公告)日：2006-12-26
申请号：US10010118
申请日：2001-12-06
申请人： James H. James
发明人： James H. James
CPC分类号： H04B3/23
摘要： This invention provides a technique to reduce echoes not adequately attenuated by echo cancellers during initial periods of voice communication. Signals transmitted across communication networks are often reflected back to the caller resulting in echo. Echo cancellers are employed in the communication system to cancel this effect in order to maintain a high quality transmission. However, echo cancellers require time to detect, adapt, and effectively remove echo, often resulting in echo during the initial moments of the call and thereby degrading the quality of service. By installing an attenuation device into the communication system, all signals that pass through it are reduced to a preset value for a set period of time. This reduces any echo below a detectable threshold. After the period of time expires, the attenuation device allows the signal to pass unaffected, by which time the echo cancellers have adaptively adjusted to any echoes in the system.
摘要翻译： 本发明提供了一种在语音通信的初始阶段减少由回波消除器未充分衰减的回波的技术。 通过通信网络传输的信号通常反映给呼叫者，从而产生回声。 在通信系统中采用回波消除器来消除此效应，以保持高质量的传输。 然而，回声消除器需要时间来检测，适应和有效地去除回声，通常在通话的初始时刻导致回声，从而降低服务质量。 通过将衰减装置安装到通信系统中，通过它的所有信号在一段时间内被减少到预设值。 这减少了可检测阈值以下的任何回波。 在该时间段到期后，衰减装置允许信号通过不受影响，此时回波消除器已经自适应地调整到系统中的任何回波。
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