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11. 发明申请

WO2002091359A1 ECHO SUPPRESSION AND SPEECH DETECTION TECHNIQUES FOR TELEPHONY APPLICATIONS 审中-公开
标题翻译：用于电话应用的ECHO抑制和语音检测技术
公开(公告)号：WO2002091359A1
公开(公告)日：2002-11-14
申请号：PCT/US2002/005209
申请日：2002-02-12
申请人： OCTIV, INC.
发明人： HODGES, Richard
IPC分类号： G10L15/20
CPC分类号： G10L25/78 , G10L2021/02082
摘要： Various methods and apparatus are described for implementing effective echo suppression in a wide variety of telephony architectures. These methods and apparatus include broadband and multi-band techniques for speech detection, estimation of near-end transmission path attenuation (118) and estimation of far-end transmission path (120), attenuation delay.
摘要翻译：描述了用于在各种电话架构中实现有效的回波抑制的各种方法和装置。这些方法和装置包括用于语音检测的宽带和多频带技术，近端传输路径衰减的估计（118）和远端传输路径（120）的估计，衰减延迟。

12. 发明申请

US20020075965A1 Digital signal processing techniques for improving audio clarity and intelligibility 审中-公开
标题翻译：用于提高音频清晰度和清晰度的数字信号处理技术
公开(公告)号：US20020075965A1
公开(公告)日：2002-06-20
申请号：US09927578
申请日：2001-08-06
申请人： Octiv, Inc.
发明人： Leif Claesson , Keith McMillen , Richard Hodges , Timothy J. Carroll
IPC分类号： H04K001/10 , H04L027/28 , G10L019/04
CPC分类号： G10L19/0208 , G10L19/0204 , G10L21/02 , G10L21/0364
摘要： Methods and apparatus are described for effecting multi-band processing of an original sampled signal. The original sampled signal is separated into a plurality of signal components each corresponding to one of a plurality of frequency bands. A dynamic range associated with each one of the plurality of signal components is independently and dynamically controlled. At least one signal level associated with the plurality of signal components is modified. The signal components are combined into a processed sampled signal.
摘要翻译：描述了用于实现原始采样信号的多频带处理的方法和装置。原始采样信号被分成多个信号分量，每个信号分量对应于多个频带之一。与多个信号分量中的每一个相关联的动态范围被独立地和动态地控制。与多个信号分量相关联的至少一个信号电平被修改。信号分量被组合成经处理的采样信号。

13. 发明申请

US20030149495A1 Techniques for variable sample rate conversion 有权
标题翻译：可变采样率转换技术
公开(公告)号：US20030149495A1
公开(公告)日：2003-08-07
申请号：US10066332
申请日：2002-02-01
申请人： Octiv, Inc.
发明人： Richard Hodges
IPC分类号： G05B011/32 , G05B013/02
CPC分类号： H04M9/08
摘要： Methods and apparatus are described for performing a variable sample rate conversion. A difference between a first sample rate associated with a first signal and a second sample rate associated with a second signal is tracked. A sample rate conversion ratio is adjusted in response to the difference. One of the first and second sample rates is converted using the conversion ratio.
摘要翻译：描述了用于执行可变采样率转换的方法和装置。跟踪与第一信号相关联的第一采样率与与第二信号相关联的第二采样率之间的差异。响应于差异来调整采样率转换比。第一和第二采样率之一使用转换比转换。

14. 发明申请

US20050285935A1 Personal conferencing node 审中-公开
标题翻译：个人会议节点
公开(公告)号：US20050285935A1
公开(公告)日：2005-12-29
申请号：US10881992
申请日：2004-06-29
申请人： Richard Hodges , Keith McMillen , Leif Claesson , Keith Edwards
发明人： Richard Hodges , Keith McMillen , Leif Claesson , Keith Edwards
IPC分类号： H04M1/24 , H04M9/08
CPC分类号： H04M9/082
摘要： A conferencing device is described which includes at least one speaker, at least one microphone for capturing energy corresponding to near-end speech, a signal interface for connecting to a voice communication system, and a digital signal processor. The digital signal processor is operable to process near-end signals corresponding to the near-end speech energy in each of a plurality of frequency bands to improve intelligibility thereof, and transmit the processed near-end signals to the voice communication system via the signal interface. The digital signal processor is also operable to receive far-end signals from the voice communication system via the signal interface, process the far-end signals in each of the plurality of frequency bands, and transmit the processed far-end signals for presentation over the speaker.
摘要翻译：描述了一种会议装置，其包括至少一个扬声器，用于捕获与近端语音相对应的能量的至少一个麦克风，用于连接到语音通信系统的信号接口和数字信号处理器。数字信号处理器可操作以处理与多个频带中的每个频带中的近端语音能量相对应的近端信号，以提高其可懂度，并且经由信号接口将经处理的近端信号发送到语音通信系统。数字信号处理器还可操作以经由信号接口从语音通信系统接收远端信号，处理多个频带中的每个频带中的远端信号，并发送经处理的远端信号以呈现在扬声器。

15. 发明公开

EP1226578A4 TECHNIQUES FOR IMPROVING AUDIO CLARITY AND INTELLIGIBILITY AT REDUCED BIT RATES OVER A DIGITAL NETWORK 审中-公开
标题翻译：技术，以提高透明度和减少的课程码量的约佩戴音频信号，在数字网络
公开(公告)号：EP1226578A4
公开(公告)日：2005-09-21
申请号：EP00993028
申请日：2000-12-12
申请人： OCTIV INC
发明人： CLAESSON LEIF HAKAN
IPC分类号： G10L19/02 , G10L21/02 , H04B1/64
CPC分类号： G10L21/02 , G10L19/0204 , G10L19/0208 , G10L21/0364
摘要： A dynamics processor with non-linear subband Automatic Gain Control (AGC) resolves an input audio signal (32) into a first plurality of frequency components, each frequency component having its own AGC (38, 40), the components being mixeds into a modified-gain audio signal. Thereafter, a multiband cross-over device (44) adaptively generates a second plurality of n signals, each having its associated amplitude and unique frequency band, which are input to their respective processing block (60, 62, 64). The processing blocks, which include AGC, change the n subband signals into n modified signals. A mixer (66), responsive to the n modified signals adaptively combines the resultant signals in real time; the output signal has enhanced audibility over that of the original audio signal.

16. 发明公开

EP1325601A4 DIGITAL SIGNAL PROCESSING TECHNIQUES FOR IMPROVING AUDIO CLARITY AND INTELLIGIBILITY 审中-公开
标题翻译：数字信号处理技术来提高声音的清晰度，当然
公开(公告)号：EP1325601A4
公开(公告)日：2005-11-09
申请号：EP01973315
申请日：2001-09-19
申请人： OCTIV INC
发明人： CLAESSON LEIF , MCMILLEN KEITH , HODGES RICHARD , CARROLL TIMOTHY J
IPC分类号： G10L19/00 , G10K15/02 , G10L19/02 , G10L21/02 , H04B1/64
CPC分类号： G10L19/0208 , G10L19/0204 , G10L21/02 , G10L21/0364
摘要： Methods and apparatus are described for effecting multi-band processing of an original sampled signal. The original sampled signal is separated (44) into a plurality of signal components each corresponding to one of a plurality of frequency bands wherein each band is independently processed (60, 62, 64). A dynamic range associated with each one of the plurality of signal components is independently and dynamically controlled (52). At least one signal level associated with the plurality of signal components is modified (46, 48, 50, 58). The signal components are combined (66) into a processed sampled signal.

17. 发明申请

US20050286443A1 Conferencing system 审中-公开
标题翻译：会议系统
公开(公告)号：US20050286443A1
公开(公告)日：2005-12-29
申请号：US10996879
申请日：2004-11-24
申请人： Keith McMillen , Richard Hodges , Keith Edwards
发明人： Keith McMillen , Richard Hodges , Keith Edwards
IPC分类号： H04L12/16 , H04M9/08
CPC分类号： H04M3/56 , H04M9/082
摘要： A conferencing system is described which includes a plurality of conferencing devices and a hub device. Each conferencing device is operable to process near-end speech energy signals to improve the intelligibility of the near-end speech, transmit the processed near-end signals to the hub device, receive far-end signals from the hub device, process the far-end signals, and present the processed far-end signals over its speaker. The hub device is operable to communicate with each of the conferencing devices and a voice communication system, selectively combine the processed near-end signals received from the conferencing devices, transmit the combined near-end signals to the voice communication system, receive the far-end signals from the voice communication system, and transmit the far-end signals to the conferencing devices.
摘要翻译：描述了包括多个会议设备和集线器设备的会议系统。每个会议设备可操作以处理近端语音能量信号以提高近端语音的可懂度，将经处理的近端信号发送到中枢设备，从中枢设备接收远端信号，结束信号，并通过其扬声器呈现处理的远端信号。集线器设备可操作以与每个会议设备和语音通信系统通信，选择性地组合从会议设备接收的经处理的近端信号，将组合的近端信号发送到语音通信系统，来自语音通信系统的终端信号，并将远端信号发送到会议设备。

18. 发明申请

US20040086107A1 Techniques for improving telephone audio quality 有权
标题翻译：提高电话音质的技术
公开(公告)号：US20040086107A1
公开(公告)日：2004-05-06
申请号：US10696239
申请日：2003-10-28
申请人： Octiv, Inc.
发明人： Richard Hodges , David Roberts , Keith McMillen , Leif Claesson , Sreevathsa G. Sreenivasa Reddy , Keith Edwards
IPC分类号： H04M001/00 , H04M009/00
CPC分类号： H04B3/20
摘要： Methods and apparatus are described for use with a near-end telephone. The near-end telephone is operable to generate an outgoing signal directed to a far-end telephone and to receive an incoming signal generated at least in part by the far-end telephone. A first signal processor is operable to dynamically adjust a first signal level associated with the outgoing signal with reference to the first signal level. A second signal processor is operable to dynamically adjust a second signal level associated with the incoming signal with reference to the second signal level. The first and second signal processors are further operable to control a loop gain to inhibit loop instability.
摘要翻译：描述了用于近端电话的方法和装置。近端电话可操作以产生定向到远端电话的输出信号并且接收至少部分由远端电话产生的输入信号。第一信号处理器可操作以参考第一信号电平来动态调整与输出信号相关联的第一信号电平。第二信号处理器可操作以参考第二信号电平动态地调整与输入信号相关联的第二信号电平。第一和第二信号处理器还可操作以控制环路增益以抑制环路不稳定性。

19. 发明公开

EP1574032A1 TECHNIQUES FOR IMPROVING TELEPHONE AUDIO QUALITY 审中-公开
标题翻译：方法提高电话音质
公开(公告)号：EP1574032A1
公开(公告)日：2005-09-14
申请号：EP03779418.7
申请日：2003-10-29
申请人： Octiv, Inc.
发明人： HODGES, Richard , ROBERTS, David , MCMILLEN, Keith , CLAESSON, Leif , REDDY, Sreevathsa, G., Sreenivasa , EDWARDS, Keith
IPC分类号： H04M9/10 , H04B3/21 , H04B3/23
CPC分类号： H04B3/20
摘要： Methods and apparatus are described for use with a near-end telephone. The near-end telephone is operable to generate an outgoing signal directed to a far-end telephone and to receive an incoming signal generated at least in part by the far-end telephone. A first signal processor is operable to dynamically adjust a first signal level associated with the outgoing signal with reference to the first signal level. A second signal processor is operable to dynamically adjust a second signal level associated with the incoming signal with reference to the second signal level. The first and second signal processors are further operable to control a loop gain to inhibit loop instability.

20. 发明公开

EP1325601A1 DIGITAL SIGNAL PROCESSING TECHNIQUES FOR IMPROVING AUDIO CLARITY AND INTELLIGIBILITY 审中-公开
标题翻译：数字信号处理技术来提高声音的清晰度，当然
公开(公告)号：EP1325601A1
公开(公告)日：2003-07-09
申请号：EP01973315.3
申请日：2001-09-19
申请人： Octiv, Inc.
发明人： CLAESSON, Leif , MCMILLEN, Keith , HODGES, Richard , CARROLL, Timothy, J.
IPC分类号： H04L27/28 , G10L21/00 , G06F17/00
CPC分类号： G10L19/0208 , G10L19/0204 , G10L21/02 , G10L21/0364
摘要： Methods and apparatus are described for effecting multi-band processing of an original sampled signal. The original sampled signal is separated (44) into a plurality of signal components each corresponding to one of a plurality of frequency bands wherein each band is independently processed (60, 62, 64). A dynamic range associated with each one of the plurality of signal components is independently and dynamically controlled (52). At least one signal level associated with the plurality of signal components is modified (46, 48, 50, 58). The signal components are combined (66) into a processed sampled signal.

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