Comfort noise information handling for audio transcoding applications
    1.
    发明授权
    Comfort noise information handling for audio transcoding applications 有权
    适用于音频转码应用的舒适噪声信息处理

    公开(公告)号:US08452591B2

    公开(公告)日:2013-05-28

    申请号:US12101918

    申请日:2008-04-11

    IPC分类号: G10L21/02

    CPC分类号: G10L19/173 G10L19/012

    摘要: A device comprising an audio information processor to receive at least one audio stream encoded according to a first protocol by a remote network processing device, the audio stream having associated comfort noise information to indicate a level of background noise available for presentation during silence periods associated with the audio stream, the audio information processor to decode the received audio stream according to the first protocol and to encode the decoded audio stream according to a second protocol, and a background noise translator to convert the comfort noise information received with the audio stream into a format compatible with the second protocol.

    摘要翻译: 一种包括音频信息处理器的设备,用于接收由远程网络处理设备根据第一协议编码的至少一个音频流,所述音频流具有相关联的舒适噪声信息,以指示可用于在与 所述音频流,所述音频信息处理器根据所述第一协议解码所接收的音频流,并且根据第二协议对所解码的音频流进行编码;以及背景噪声转换器,用于将所述音频流接收的舒适噪声信息转换为 格式与第二个协议兼容。

    Controlling echo during double-talk in a voice conference
    2.
    发明授权
    Controlling echo during double-talk in a voice conference 有权
    在语音会议中双向通话期间控制回声

    公开(公告)号:US08238548B2

    公开(公告)日:2012-08-07

    申请号:US12028594

    申请日:2008-02-08

    CPC分类号: H04M9/08

    摘要: An echo canceller apparatus comprises a receive side attenuator coupled in a receive side signal path that is configured to couple from a conference call bridge to a caller; a convolution processor coupled to the receive side signal path at a convolution processor pick-off point; a double-talk detector coupled to the receive side signal path and to a sending side signal path that is configured to couple from the caller to the conference call bridge; and logic coupled to the receive side attenuator which when executed is responsive to a double-talk condition detected by the double-talk detector and operable to determine a level of echo canceled by the convolution processor, to determine an additional amount of attenuation to introduce, and to activate the receive side attenuator to introduce the additional attenuation.

    摘要翻译: 一种回声消除装置包括耦合在接收侧信号路径中的接收侧衰减器,接收侧衰减器被配置为从会议呼叫桥耦合到呼叫者; 在卷积处理器拾取点处耦合到接收侧信号路径的卷积处理器; 耦合到接收侧信号路径的双向通话检测器和被配置为从呼叫者耦合到电话会议桥的发送侧信号路径; 以及耦合到所述接收侧衰减器的逻辑,其在执行时响应于所述双方通话检测器检测到的双方通话条件,并且可操作以确定由所述卷积处理器消除的回波电平,以确定要引入的附加的衰减量, 并激活接收侧衰减器以引入额外的衰减。

    COMFORT NOISE INFORMATION HANDLING FOR AUDIO TRANSCODING APPLICATIONS
    3.
    发明申请
    COMFORT NOISE INFORMATION HANDLING FOR AUDIO TRANSCODING APPLICATIONS 有权
    舒适的噪音信息处理音频转换应用

    公开(公告)号:US20090259462A1

    公开(公告)日:2009-10-15

    申请号:US12101918

    申请日:2008-04-11

    IPC分类号: G10L21/02

    CPC分类号: G10L19/173 G10L19/012

    摘要: A device comprising an audio information processor to receive at least one audio stream encoded according to a first protocol by a remote network processing device, the audio stream having associated comfort noise information to indicate a level of background noise available for presentation during silence periods associated with the audio stream, the audio information processor to decode the received audio stream according to the first protocol and to encode the decoded audio stream according to a second protocol, and a background noise translator to convert the comfort noise information received with the audio stream into a format compatible with the second protocol.

    摘要翻译: 一种包括音频信息处理器的设备,用于接收由远程网络处理设备根据第一协议编码的至少一个音频流,所述音频流具有相关联的舒适噪声信息,以指示可用于在与 所述音频流,所述音频信息处理器根据所述第一协议解码所接收的音频流,并且根据第二协议对所解码的音频流进行编码;以及背景噪声转换器,用于将所述音频流接收的舒适噪声信息转换为 格式与第二个协议兼容。

    Controlling Echo During Double-Talk in a Voice Conference
    4.
    发明申请
    Controlling Echo During Double-Talk in a Voice Conference 有权
    在语音会议双重对话中控制回声

    公开(公告)号:US20090202063A1

    公开(公告)日:2009-08-13

    申请号:US12028594

    申请日:2008-02-08

    IPC分类号: H04M9/08

    CPC分类号: H04M9/08

    摘要: An echo canceller apparatus comprises a receive side attenuator coupled in a receive side signal path that is configured to couple from a conference call bridge to a caller; a convolution processor coupled to the receive side signal path at a convolution processor pick-off point; a double-talk detector coupled to the receive side signal path and to a sending side signal path that is configured to couple from the caller to the conference call bridge; and logic coupled to the receive side attenuator which when executed is responsive to a double-talk condition detected by the double-talk detector and operable to determine a level of echo canceled by the convolution processor, to determine an additional amount of attenuation to introduce, and to activate the receive side attenuator to introduce the additional attenuation.

    摘要翻译: 一种回声消除装置包括耦合在接收侧信号路径中的接收侧衰减器,接收侧衰减器被配置为从会议呼叫桥耦合到呼叫者; 在卷积处理器拾取点处耦合到接收侧信号路径的卷积处理器; 耦合到接收侧信号路径的双向通话检测器和被配置为从呼叫者耦合到电话会议桥的发送侧信号路径; 以及耦合到所述接收侧衰减器的逻辑,其在执行时响应于所述双方通话检测器检测到的双方通话条件,并且可操作以确定由所述卷积处理器消除的回波电平,以确定要引入的附加的衰减量, 并激活接收侧衰减器以引入额外的衰减。

    SUPPRESSING HIGH SPEED MODULATION NEGOTIATION
    5.
    发明申请
    SUPPRESSING HIGH SPEED MODULATION NEGOTIATION 有权
    抑制高速调制协商

    公开(公告)号:US20070121857A1

    公开(公告)日:2007-05-31

    申请号:US11562363

    申请日:2006-11-21

    IPC分类号: H04M1/56 H04M15/06

    摘要: In one embodiment, one or more gateways sniff the voice channel during the voice mode. If it is determined that V.8bis signals are being initiated, then the gateway breaks these exchanges by suppressing such signaling, thereby avoiding the above-described detrimental effects. Modem relay communications then are allowed to proceed. Briefly, the method and apparatus involve monitoring a call during a voice mode phase for an initiating signal representative of the defined signaling, the monitoring being performed by a local gateway and, if such an initiating signal is detected during the monitoring, then suppressing such detected signaling in such manner that the signaling does not reach the remote gateway. Preferably, the monitoring is for an initiating signal characterized by a dual tone of defined frequency and duration of approximately 1375 Hz and 2002 Hz for a duration of approximately 400 ms or 285 ms, in agreement with the ITU-T Recommendation V.8bis (standard) adopted by the International Telecommunication Union. Monitoring is continued at least until an answer back from an answering station is received by the gateway. When the suppression succeeds and the remote (non-initiating gateway that may be awaiting such an initiating signal halts any further V.8bis transaction attempts, the local gateway initiates a modem relay session of operation with the remote gateway.

    摘要翻译: 在一个实施例中,一个或多个网关在语音模式期间嗅探语音信道。 如果确定V.8bis信号正被启动,则网关通过抑制这种信令来破坏这些交换,从而避免上述的不利影响。 然后允许调制解调器中继通信继续。 简而言之,该方法和装置涉及在代表定义的信令的启动信号的语音模式阶段期间监视呼叫,监视由本地网关执行,并且如果在监视期间检测到这样的启动信号,则抑制这种检测到的 信令以信令不到达远程网关的方式。 优选地,监视是针对起始信号,其特征在于具有大约137​​5Hz和2002Hz的定义的频率和持续时间的双音调,持续时间为大约400ms或285ms,与ITU-T建议V.8bis(标准)一致 )国际电信联盟通过。 至少继续进行监控,直到网关收到来自应答站的应答。 当抑制成功并且可能正在等待这样的发起信号的远程(非发起网关停止任何进一步的V.8bis事务尝试)时,本地网关发起与远程网关的调制解调器中继操作会话。

    Managing multicast conference calls
    8.
    发明申请
    Managing multicast conference calls 有权
    管理多播会议电话

    公开(公告)号:US20050068904A1

    公开(公告)日:2005-03-31

    申请号:US10675369

    申请日:2003-09-30

    IPC分类号: H04Q3/00 H04Q11/00

    摘要: Managing a multicast conference call includes receiving signals at a local endpoint participating in a multicast conference call with remote endpoints. The signals include a local signal associated with the local endpoint and remote signals, where each remote signal is associated with a remote endpoint. Metric ratings are determined, where each metric rating reflects an importance of a signal. The metric ratings include a local metric rating corresponding to the local signal and remote metric ratings, where each remote metric rating corresponds to a remote signal. The local metric rating and the remote metric ratings are compared, and a subset of signals is selected according to the comparison.

    摘要翻译: 管理多播会议呼叫包括在参与与远程端点的多播会议呼叫的本地端点处的接收信号。 信号包括与本地端点和远程信号相关联的本地信号,其中每个远程信号与远程端点相关联。 度量标准被确定,其中每个度量标准反映信号的重要性。 度量额定值包括对应于本地信号和远程度量额定值的本地度量评级,其中每个远程度量评级对应于远程信号。 比较本地度量标准和远程度量标准,并根据比较选择信号子集。

    Compression of repeated patterns in full bandwidth channels over a packet network
    9.
    发明申请
    Compression of repeated patterns in full bandwidth channels over a packet network 有权
    在分组网络中压缩全带宽信道中的重复模式

    公开(公告)号:US20050015514A1

    公开(公告)日:2005-01-20

    申请号:US10449953

    申请日:2003-05-30

    IPC分类号: H03M7/46 H04L29/06 G06F15/16

    CPC分类号: H03M7/46 H04L69/04

    摘要: A network device is disclosed. The network device includes a port to allow the device to communicate on a full bandwidth channel, a main processor to control reception and transmission of data and a compressor. The compressor identifies repeated fixed sequences in the data, and replaces repeated fixed sequences with an identifier sequence, a count of repetitions and the fixed sequence. The network device may have a decompressor instead of, or in addition to, the compressor that can decompress received data that is compressed.

    摘要翻译: 公开了网络设备。 网络设备包括允许设备在全带宽信道上通信的端口,用于控制数据的接收和传输的主处理器以及压缩器。 压缩器识别数据中的重复固定序列,并用标识符序列,重复计数和固定序列替换重复的固定序列。 网络设备可以具有解压缩器,而不是压缩器,也可以除压缩器之外,还可以对压缩的接收数据进行解压缩。