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    • 51. 发明申请
    • METHOD FOR PHASE MISMATCH CALIBRATION FOR AN ARRAY MICROPHONE AND PHASE CALIBRATION MODULE FOR THE SAME
    • 用于阵列麦克风和相位校准模块的相位误差校准的方法
    • US20100179806A1
    • 2010-07-15
    • US12352666
    • 2009-01-13
    • Ming ZhangXiaoyan Lu
    • Ming ZhangXiaoyan Lu
    • G10L21/00H04R3/00
    • H04R3/005G10L21/0208G10L25/78G10L2021/02166
    • The invention provides a phase calibration module, calibrating phase mismatch between microphone signals output by a plurality of microphones of an array microphone. In one embodiment, the phase calibration module comprises a subband filter, a delay calculation module, and a delay compensation filter. The subband filter extracts a high frequency component and a low frequency component from each of the microphone signals to obtain a plurality of high-frequency component signals and a plurality of low-frequency component signals. The delay calculation module calculates delays between the low-frequency component signals. The delay compensation filter then compensates the low-frequency component signals for phase mismatches therebetween according to the calculated delays to obtain a plurality of calibrated low-frequency component signals.
    • 本发明提供一种相位校准模块,用于校准由阵列麦克风的多个麦克风输出的麦克风信号之间的相位失配。 在一个实施例中,相位校准模块包括子带滤波器,延迟计算模块和延迟补偿滤波器。 子带滤波器从每个麦克风信号中提取高频分量和低频分量,以获得多个高频分量信号和多个低频分量信号。 延迟计算模块计算低频分量信号之间的延迟。 延迟补偿滤波器然后根据所计算的延迟来补偿低频分量信号之间的相位失配,以获得多个校准的低频分量信号。
    • 52. 发明授权
    • Techniques for selectively performing searches against data and providing search results
    • 用于选择性地执行针对数据的搜索并提供搜索结果的技术
    • US07747638B1
    • 2010-06-29
    • US10964980
    • 2004-10-13
    • Patrick LooSotirios MatzanasMing ZhangMatthias EichstaedtMitra NaeimiJim Fondren
    • Patrick LooSotirios MatzanasMing ZhangMatthias EichstaedtMitra NaeimiJim Fondren
    • G06F7/00G06F17/30
    • G06F17/30646
    • Search queries are received that should be run against data. As time elapses, new queries and new data may be received. Previously run queries may be referred to as base queries and the data that was searched using the queries may be referred to as base data. The base queries and new queries may be parsed to identify queries that are similar. The similar queries are then combined into a unique query so that multiple queries that are similar are not used to search the same data. The unique queries that are generated are used to search the new data received to generate a first set of search results. The new queries received are used to search the base data to generate a second set of search results. The search results for the new queries are then determined based on the first and second set of search results. Also, the search results for the base queries are determined based on the first set results. Accordingly, the base queries used to search the new data received and the new queries are used to search the new data and the base data.
    • 收到的搜索查询应该针对数据运行。 随着时间的推移,可能会收到新的查询和新的数据。 以前运行的查询可以被称为基本查询,并且使用查询搜索的数据可以被称为基础数据。 可以解析基本查询和新查询以识别类似的查询。 然后,将类似的查询组合成唯一的查询,以便不使用相似的多个查询来搜索相同的数据。 生成的唯一查询用于搜索接收到的新数据以生成第一组搜索结果。 收到的新查询用于搜索基本数据以生成第二组搜索结果。 然后,基于第一组和第二组搜索结果确定新查询的搜索结果。 此外,基于第一集合结果确定基本查询的搜索结果。 因此,用于搜索接收的新数据的基本查询和新查询用于搜索新数据和基本数据。
    • 53. 发明申请
    • METHOD AND APPARATUS FOR AUTOMATIC VOLUME ADJUSTMENT
    • 自动调节方法和装置
    • US20100158275A1
    • 2010-06-24
    • US12343842
    • 2008-12-24
    • Ming ZhangChi-Chian Yu
    • Ming ZhangChi-Chian Yu
    • H03G3/20
    • H03G3/32
    • The invention provides an apparatus capable of automatic volume adjustment. In one embodiment, the apparatus comprises a speaker, an array microphone located in the vicinity of the speaker, a beamforming module, a signal-to-noise ratio calculation module, and a volume adjustment module. The speaker first broadcasts a first audio signal. The array microphone converts a sound into a plurality of second audio signals. The beamforming module derives a speaker sound signal and an ambient noise signal from the second audio signals, wherein the speaker sound signal mainly comprises speaker sound components generated by the speaker and the ambient noise signal mainly comprises noises other than the speaker sound components. The signal-to-noise ratio calculation module calculates a ratio of a first power of the speaker sound signal to a second power of the ambient noise signal to obtain a signal-to-noise ratio. The volume adjustment module then adjusts a volume of the first audio signal according to the signal-to-noise ratio before the first audio signal is delivered to the speaker.
    • 本发明提供一种能够自动调节音量的装置。 在一个实施例中,该装置包括扬声器,位于扬声器附近的阵列麦克风,波束形成模块,信噪比计算模块和音量调节模块。 扬声器首先广播第一音频信号。 阵列麦克风将声音转换成多个第二音频信号。 波束成形模块从第二音频信号导出扬声器声音信号和环境噪声信号,其中扬声器声音信号主要包括由扬声器产生的扬声器声音分量,并且环境噪声信号主要包括扬声器声音分量以外的噪声。 信噪比计算模块计算扬声器声音信号的第一功率与环境噪声信号的第二功率的比率,以获得信噪比。 音量调节模块然后根据在将第一音频信号传送到扬声器之前的信噪比来调节第一音频信号的音量。
    • 56. 发明授权
    • Detect user-perceived faults using packet traces in enterprise networks
    • 使用企业网络中的数据包跟踪检测用户感知的故障
    • US07640460B2
    • 2009-12-29
    • US11680477
    • 2007-02-28
    • Paramvir BahlRanveer ChandraLun LiDavid A. MaltzMing Zhang
    • Paramvir BahlRanveer ChandraLun LiDavid A. MaltzMing Zhang
    • G06F11/00
    • H04L41/0681
    • Exemplary methods, computer-readable media, and systems for detecting a fault by a packet trace, includes monitoring at least one packet transmitted to or received from, an computing device of an end user, between one or more computing devices implementing at least one of a service or an application on an enterprise network. The process also includes identifying whether an abnormal condition occurred on the computing device of the end user based on monitoring at least one packet transmitted to or received from, the computing device of the end user; and detecting a fault by using an algorithm based on monitoring at least one packet transmitted or received from, the computing device of the end user; wherein the fault indicates a desired course of action did not occur while the computing device of the end user uses at least one of the service or the application in the enterprise network.
    • 用于通过分组跟踪检测故障的示例性方法,计算机可读介质和系统包括监视在一个或多个计算设备之间发送到终端用户的计算设备或从终端用户的计算设备接收的至少一个分组,其实现以下中的至少一个: 企业网络上的服务或应用程序。 该过程还包括基于监视终端用户的计算设备发送到或从其接收到的至少一个分组来识别终端用户的计算设备上是否发生异常状况; 以及通过使用基于监视从最终用户的计算设备发送或接收的至少一个分组的算法来检测故障; 其中所述故障指示在所述终端用户的计算设备使用所述企业网络中的所述服务或应用中的至少一个的情况下不发生期望的操作过程。