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11. 发明授权

US6011846A Methods and apparatus for echo suppression 失效
标题翻译：用于回波抑制的方法和装置
公开(公告)号：US6011846A
公开(公告)日：2000-01-04
申请号：US881062
申请日：1997-06-24
申请人： Rafi Rabipour , Dominic Ho , Majid Foodeei , Madeleine Saikaly
发明人： Rafi Rabipour , Dominic Ho , Majid Foodeei , Madeleine Saikaly
IPC分类号： G10L21/02 , H04B3/20 , H04B7/015 , G10L9/00
CPC分类号： H04B7/015 , H04B3/20 , G10L2021/02082
摘要： In methods and apparatus for suppressing echo of a far end signal encoded using LPC-based compression in a near end signal encoded using LPC-based compression, parameters of each frame of the near end encoded signal are processed without synthesizing a speech signal from the near end encoded signal to determine whether sufficient echo to merit echo suppression is present in the frame. Upon determining that insufficient echo to merit echo suppression is present in the frame, the parameters of the frame are passed unmodified. Upon determining that sufficient echo to merit echo suppression is present in said frame, the parameters of the frame are modified without synthesizing a speech signal to suppress echo in the frame. The methods and apparatus are particularly suitable in codec bypass applications.
摘要翻译：在使用基于LPC的压缩编码的近端信号中抑制使用基于LPC的压缩编码的远端信号的回波的方法和装置中，处理近端编码信号的每帧的参数，而不从近端结束编码信号以确定帧中是否存在足以有效回波抑制的回波。在确定帧中存在不足以获得回波抑制的回波的情况下，帧的参数未被修改。在确定在所述帧中存在足够的回波以获得回波抑制的情况下，修改帧的参数而不合成语音信号以抑制帧中的回波。该方法和装置特别适用于编解码器旁路应用。

12. 发明授权

US5768308A System for TDMA mobile-to-mobile VSELP codec bypass 失效
标题翻译：用于TDMA移动到移动VSELP编解码器旁路的系统
公开(公告)号：US5768308A
公开(公告)日：1998-06-16
申请号：US358949
申请日：1994-12-19
申请人： Hermon Pon , Rafi Rabipour , Chung-Cheung Chu
发明人： Hermon Pon , Rafi Rabipour , Chung-Cheung Chu
IPC分类号： G10L19/00 , H04B7/26 , H04J3/00 , H04M3/00 , H04M3/40 , H04M7/12 , H04W88/18 , H04Q7/00
CPC分类号： H04W88/181 , H04M3/40 , H04M2207/18 , H04M2207/20 , H04M3/002 , H04M7/12 , H04Q2213/13031 , H04Q2213/13034 , H04Q2213/13098 , H04Q2213/1319 , H04Q2213/13292
摘要： In a TDMA mobile-to-mobile connection, the end-to-end audio signal quality as well as system performance can be improved by providing digital signal processors the capability to automatically switch configuration such that each digital signal processor in a mobile-to-mobile communication connection can automatically identify a TDMA mobile-to-mobile connection and bypass the speech encoding and decoding processes within the digital signal processors. The two digital signal processors are virtually connected at the channel codecs.
摘要翻译：在TDMA移动到移动连接中，可以通过向数字信号处理器提供自动切换配置的能力来提高端对端音频信号质量以及系统性能，使得每个数字信号处理器以移动 - 移动通信连接可以自动识别TDMA移动到移动连接并且绕过数字信号处理器内的语音编码和解码过程。两个数字信号处理器在通道编解码器上虚拟连接。

13. 发明授权

US5577117A Methods and apparatus for estimating and adjusting the frequency response of telecommunications channels 失效
标题翻译：用于估计和调整电信频道频率响应的方法和装置
公开(公告)号：US5577117A
公开(公告)日：1996-11-19
申请号：US257129
申请日：1994-06-09
申请人： Rafi Rabipour , Vasu Iyengar
发明人： Rafi Rabipour , Vasu Iyengar
IPC分类号： H04B3/06 , H04R29/00
CPC分类号： H04B3/06 , H04L25/03885
摘要： In methods and apparatus for estimating the frequency response of telecommunications channels, signals carried on the channels are divided into pluralities of signal segments of limited duration, unvoiced signal segments are identified, and spectral components of the unvoiced signal segments are measured. The measured spectral components may be integrated over time to derive time-averaged measurements of the spectral components. The time-averaged measurements may be compared to corresponding components of expected unvoiced signal spectra to improve the accuracy of the frequency response estimates. Filters may be inserted in the channels to adjust the frequency responses, the filters having filter characteristics selected in response to the measured spectral components. The methods and apparatus can be used to compensate for poor bass frequency response in voice channels.
摘要翻译：在用于估计电信信道的频率响应的方法和装置中，在信道上承载的信号被划分成多个有限持续时间的信号段，识别清音信号段，并且测量清音信号段的频谱分量。测量的光谱分量可以随时间积分以导出光谱分量的时间平均测量。可以将时间平均测量值与预期清音信号频谱的相应分量进行比较，以提高频率响应估计的准确度。可以将滤波器插入通道中以调整频率响应，滤波器具有响应于测量的频谱分量而选择的滤波器特性。方法和装置可用于补偿语音信道中的低音低频响应。

14. 发明申请

US20130322503A1 NON-INSTRUSIVE NETWORK SURVEILLANCE AND CHARACTERIZATION 有权
标题翻译：非网络监控和特征
公开(公告)号：US20130322503A1
公开(公告)日：2013-12-05
申请号：US13483367
申请日：2012-05-30
申请人： Eva Finkelstein , Djordje Konforti , Rafi Rabipour
发明人： Eva Finkelstein , Djordje Konforti , Rafi Rabipour
IPC分类号： H04W24/00 , H04B17/00
CPC分类号： G06F11/3612 , G06F11/3027 , G06F11/3096 , G06F11/364 , G06F11/3644
摘要： In a system (20) handles plural communication channels (26), pre-configured instrumentation code (50) is loaded into a common program memory. The instrumentation code (50) is used to generate a surveillance element (70). The surveillance element (70) comprises multi-dimensional execution criteria and executable surveillance code configured to cause performance by a target processor unit of a surveillance element-specified surveillance action. The surveillance element (70) is executed by the target processor unit with respect to the respective subset of plural communication channels and permits continued transport of data over the plural communication channels.
摘要翻译：在系统（20）中，处理多个通信信道（26），将预先配置的检测码（50）加载到公共程序存储器中。仪器代码（50）用于产生监视元件（70）。监视元件（70）包括多维执行标准和被配置为使得目标处理器单元执行监控元件指定的监视动作的可执行监视代码。监视元件（70）由目标处理器单元相对于多个通信信道的相应子集执行，并允许在多个通信信道上继续传输数据。

15. 发明授权

US08194649B2 Methods and apparatus for data communication 有权
标题翻译：数据通信的方法和装置
公开(公告)号：US08194649B2
公开(公告)日：2012-06-05
申请号：US12458883
申请日：2009-07-27
申请人： Rafi Rabipour , Chung Cheung C. Chu , Pierre Gendron , William Navarro , Paul Boudreaux
发明人： Rafi Rabipour , Chung Cheung C. Chu , Pierre Gendron , William Navarro , Paul Boudreaux
IPC分类号： H04L12/66
CPC分类号： H04M7/0027 , H04L12/6418 , H04L69/08 , H04L69/24 , H04L2012/6486 , H04M3/08
摘要： Data communication apparatus including a port and a control entity. The control entity is operative to establish a connection with a remote entity over a first path and negotiate with the remote entity using in-band signaling over the first path establishment of a second path allowing the exchange of data between the data communication apparatus and the remote entity. The invention presents advantages from the standpoint of ease of implementation and bandwidth and resource savings. The use of an in-band messaging protocol to negotiate a establishment of the second path can be implemented generally in a straight forward manner. At the same time, the ability to transfer at least part of the connection to the second path avoids the drawbacks that would arise if that part of the connection were constrained to the first path. This feature allows the operator to take advantage of benefits provided by the second path but not available to the first path.
摘要翻译：包括端口和控制实体的数据通信装置。控制实体可操作以通过第一路径与远程实体建立连接，并使用允许在数据通信设备和远端之间的数据交换的第二路径的第一路径建立的带内信令与远程实体进行协商实体。从实现的方便性和带宽和资源节省的观点出发，本发明具有优点。通常使用带内消息协议来协商第二路径的建立通常以直接方式实现。同时，将连接的至少一部分传送到第二路径的能力避免了如果连接的那部分被限制到第一路径时会出现的缺点。该特征允许操作者利用由第二路径提供的优点，但不能用于第一路径。

16. 发明授权

US07734462B2 Method and apparatus for extending the bandwidth of a speech signal 有权
标题翻译：扩展语音信号带宽的方法和装置
公开(公告)号：US07734462B2
公开(公告)日：2010-06-08
申请号：US11469705
申请日：2006-09-01
申请人： Peter Kabal , Rafi Rabipour , Yasheng Qian
发明人： Peter Kabal , Rafi Rabipour , Yasheng Qian
IPC分类号： G10L21/00
CPC分类号： G10L21/038 , G10L25/18
摘要： A bandwidth extension module, and an associated method and computer-readable medium, suitable for use in artificially extending the bandwidth of a lowband speech signal. The bandwidth extension module comprises a band-pass filter configured to produce a band-pass signal from the lowband speech signal; at least one carrier frequency modulator, each carrier frequency modulator configured to pitch-synchronously modulate the band-pass signal about a respective carrier frequency, the at least one carrier frequency modulator collectively producing a highband speech signal component; a synthesis filter configured to determine a highband speech signal based on the highband speech signal component; and a summation module configured to combine the lowband speech signal with the highband speech signal to obtain a bandwidth-extended speech signal.
摘要翻译：带宽扩展模块以及适用于人为地扩展低带语音信号带宽的相关方法和计算机可读介质。带宽扩展模块包括被配置为从低频语音信号产生带通信号的带通滤波器; 至少一个载波频率调制器，每个载波频率调制器被配置为对相应的载波频率进行音调同步调制所述带通信号，所述至少一个载波频率调制器共同产生高频语音信号分量; 合成滤波器，被配置为基于所述高频语音信号分量来确定高频语音信号; 以及相加模块，被配置为将低频语音信号与高频语音信号组合以获得带宽扩展语音信号。

17. 发明授权

US07203226B1 Methods and apparatus for data communication 有权
标题翻译：数据通信的方法和装置
公开(公告)号：US07203226B1
公开(公告)日：2007-04-10
申请号：US10293613
申请日：2002-11-14
申请人： Rafi Rabipour , David Brombal , Chung Cheung C. Chu
发明人： Rafi Rabipour , David Brombal , Chung Cheung C. Chu
IPC分类号： H04L5/16 , H04B1/38
CPC分类号： H04W88/181 , G10L19/173
摘要： A communication apparatus having a communication interface for communicating with a first remote entity, the first remote entity including a decoder capable of decoding data encoded according to a first encoding format. The communication apparatus includes a control entity operative to detect an attempt by a second remote entity to establish a TFO connection with the communication apparatus via the communication interface, for sending to the first remote entity, via the communication apparatus data encoded according to a second encoding format, different from the first encoding format, where the decoder at the first remote entity is incompatible with data encoded according to the second encoding format. When the control entity detects such an attempt, it enables a converter to convert data encoded according to the second encoding format received from the second remote entity into data encoded according to the first encoded format, and sends the data encoded according to the first encoded format to the first remote entity via the communication interface.
摘要翻译：一种具有用于与第一远程实体通信的通信接口的通信装置，所述第一远程实体包括能够对根据第一编码格式编码的数据进行解码的解码器。所述通信装置包括控制实体，其操作以检测第二远程实体经由所述通信接口与所述通信装置建立TFO连接的尝试，以经由所述通信装置发送根据第二编码进行编码的数据格式，与第一编码格式不同，其中第一远程实体处的解码器与根据第二编码格式编码的数据不兼容。当控制实体检测到这样的尝试时，其使得转换器能够将根据从第二远程实体接收的第二编码格式编码的数据转换成根据第一编码格式编码的数据，并且发送根据第一编码格式编码的数据通过通信接口到第一远程实体。

18. 发明授权

US06324515B1 Method and apparatus for asymmetric communication of compressed speech 失效
标题翻译：压缩语音不对称通信的方法和装置
公开(公告)号：US06324515B1
公开(公告)日：2001-11-27
申请号：US09088895
申请日：1998-06-02
申请人： Rafi Rabipour , Paul Coverdale , William Navarro
发明人： Rafi Rabipour , Paul Coverdale , William Navarro
IPC分类号： G10L2104
CPC分类号： G10L19/00
摘要： This invention relates to a method and an apparatus for processing digital audio signals that may reduce the signal degradation occurring when the signal is exchanged between two communication terminals equipped with vocoders in a communication network. The solution proposed by this invention is to provide a communication terminal with a vocoder including a decoder section provided with a plurality of decoding units. A switch activates a selected one of the decoding units in dependence of the format of the compressed audio signal data frames received from a remote communication terminal. This system allows the communication terminal to support a number of different speech compression formals. In order to achieve simplicity and low cost, the communication terminal is provided with a single encoding unit. This results in an asymmetric arrangement where the communication terminal has a large number of decoding units than encoding units. The great majority of the speech compression algorithms deployed in wireless and Internet telephony standards have the property that their speech decoders are of far less computational complexity than their respective speech encoder. Therefore, a low-cost terminal can be produced which supports a low complexity speech encoder unit and a variety of speech decoder units.
摘要翻译：本发明涉及一种用于处理数字音频信号的方法和装置，其可以减少在通信网络中配备声码器的两个通信终端之间交换信号时发生的信号劣化。本发明提出的解决方案是提供一种具有声码器的通信终端，该声码器包括设置有多个解码单元的解码器部分。开关根据从远程通信终端接收的压缩音频信号数据帧的格式来激活所选择的解码单元。该系统允许通信终端支持多种不同的语音压缩形式。为了实现简单性和低成本，通信终端设置有单个编码单元。这导致非对称布置，其中通信终端具有比编码单元大的解码单元数量。部署在无线和因特网电话标准中的绝大多数语音压缩算法具有这样的性质：它们的语音解码器的计算复杂度远远低于它们各自的语音编码器。因此，可以制造支持低复杂性语音编码器单元和各种语音解码器单元的低成本终端。

19. 发明授权

US6148422A Telecommunication network utilizing an error control protocol 失效
标题翻译：使用错误控制协议的电信网络
公开(公告)号：US6148422A
公开(公告)日：2000-11-14
申请号：US946312
申请日：1997-10-07
申请人： Leo Strawczynski , Bill Gage , Rafi Rabipour
发明人： Leo Strawczynski , Bill Gage , Rafi Rabipour
IPC分类号： H04L1/00 , H04L1/24
CPC分类号： H04L1/0057 , H04L1/24
摘要： The present invention provides a system and a method for improving the voice quality of wireless-to-wireless calls. More specifically, the invention provides a method and an apparatus to add supplemental information for better error detection and correction of data packets. This feature allows the identification of the telecommunication link causing errors in the data packets and optimizes the use of the reconstructed data packets.
摘要翻译：本发明提供一种用于提高无线到无线呼叫的语音质量的系统和方法。更具体地，本发明提供了一种添加补充信息以更好地进行数据分组的错误检测和校正的方法和装置。该特征允许识别导致数据分组中的错误的电信链路，并优化重构数据分组的使用。

20. 发明授权

US6026356A Methods and devices for noise conditioning signals representative of audio information in compressed and digitized form 失效
标题翻译：用于以压缩和数字化形式表示音频信息的噪声调节信号的方法和装置
公开(公告)号：US6026356A
公开(公告)日：2000-02-15
申请号：US888276
申请日：1997-07-03
申请人： H. S. P. Yue , Rafi Rabipour , Chung-Cheung Chu
发明人： H. S. P. Yue , Rafi Rabipour , Chung-Cheung Chu
IPC分类号： G10L19/00 , G10L19/06 , G01L3/00
CPC分类号： G10L19/012 , G10L19/06
摘要： The present invention relates to methods and devices for processing data frames representative of audio information in digitized and compressed form. The method comprises the steps of classifying successive data frames into frames containing speech sounds and non-speech sounds, altering parameters of the data frames identified as containing non-speech sounds for eliminating or at least substantially reducing artifacts that distort the acoustic background noise. In addition, the data frame identified as containing non-speech sounds are low-pass filtered. Finally, a signal level compensation is effected to avoid undesired fluctuations in the signal level.
摘要翻译：本发明涉及用于处理以数字化和压缩形式表示音频信息的数据帧的方法和装置。该方法包括以下步骤：将连续数据帧分类成包含语音和非语音的帧，改变被识别为包含非语音声音的数据帧的参数，以消除或至少基本上减少使声音背景噪声失真的人为因素。此外，被识别为包含非语音声音的数据帧被低通滤波。最后，进行信号电平补偿以避免信号电平的不期望的波动。

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