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    • 2. 发明申请
    • APPARATUS AND METHOD FOR COMPUTING CONTROL INFORMATION FOR AN ECHO SUPPRESSION FILTER AND APPARATUS AND METHOD FOR COMPUTING A DELAY VALUE
    • 用于计算ECHO抑制过滤器的控制信息的装置和方法以及计算延迟值的装置和方法
    • WO2009092522A1
    • 2009-07-30
    • PCT/EP2009/000123
    • 2009-01-12
    • FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.KÜCH, FabianKALLINGER, MarkusFALLER, ChristofFAVROT, Alexis
    • KÜCH, FabianKALLINGER, MarkusFALLER, ChristofFAVROT, Alexis
    • H04M9/08
    • H04M9/082
    • An embodiment of an apparatus (200) for computing control information for a suppression filter (210) for filtering a second audio signal to suppress an echo based on a first audio signal includes a computation means (220) having a value determination means (230) for determining at least one energy-related value for a band-pass signal of at least two temporally successive data blocks of at least one signal of a group of signals. The computation means (220) further includes a mean value determination means (250) for determining at least one mean value of the at least one determined energy-related value for the band-pass signal. The computation means (220) further includes a modification means (260) for modifying the at least one energy-related value for the band-pass signal on the basis of the determined mean value for the band-pass signal. The computation means (220) ' further includes a control information computation means (270) for computing the control information for the suppression filter (210) on the basis of the at least one modified energy-related value.
    • 用于计算用于滤波第二音频信号以抑制基于第一音频信号的回波的抑制滤波器(210)的控制信息的装置(200)的实施例包括具有值确定装置(230)的计算装置(220) 用于为一组信号的至少一个信号的至少两个时间上连续的数据块的带通信号确定至少一个能量相关值。 计算装置(220)还包括一个平均值确定装置(250),用于确定所述至少一个确定的带通信号的能量相关值的平均值。 计算装置(220)还包括修改装置(260),用于根据确定的带通信号的平均值修改带通信号的至少一个能量相关值。 计算装置(220)还包括控制信息计算装置(270),用于根据至少一个经修改的能量相关值计算抑制滤波器(210)的控制信息。
    • 3. 发明申请
    • APPARATUS AND METHOD FOR SPATIALLY SELECTIVE SOUND ACQUISITION BY ACOUSTIC TRIANGULATION
    • 通过声学三角形进行空间选择性声音采集的装置和方法
    • WO2012072787A1
    • 2012-06-07
    • PCT/EP2011/071600
    • 2011-12-02
    • FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.FRIEDRICH-ALEXANDER-UNIVERSITÄT ERLANGEN-NÜRNBERGHERRE, JürgenKÜCH, FabianKALLINGER, MarkusDEL GALDO, GiovanniGRILL, Bernhard
    • HERRE, JürgenKÜCH, FabianKALLINGER, MarkusDEL GALDO, GiovanniGRILL, Bernhard
    • H04R1/40H04R3/00
    • H04R1/40G10L2021/02166H04R1/406H04R3/005H04R2201/401H04R2430/25
    • An apparatus for capturing audio information from a target location is provided. The apparatus comprises a first beamformer (110) being arranged in a recording environment and having a first recording characteristic, a second beamformer (120) being arranged in the recording environment and having a second recording characteristic and a signal generator (130). The first beamformer (110) is configured for recording a first beamformer audio signal and the second beamformer is configured for recording a second beamformer audio signal when the first beamformer (110) and the second beamformer (120) are directed towards the target location with respect to the first and the second recording characteristic. The first beamformer (110) and the second beamformer (120) are arranged such that a first virtual straight line, being defined to pass through the first beamformer (110) and the target location, and a second virtual straight line, being defined to pass through the second beamformer (120) and the target location, are not parallel with respect to each other. The signal generator (130) is configured to generate an audio output signal based on the first beamformer audio signal and on the second beamformer audio signal so that the audio output signal reflects relatively more audio information from the target location compared to the audio information from the target location in the first and the second beamformer audio signal.
    • 提供了一种用于从目标位置捕获音频信息的装置。 该装置包括布置在记录环境中并具有第一记录特性的第一波束形成器(110),第二波束形成器(120)布置在记录环境中并具有第二记录特性和信号发生器(130)。 第一波束成形器(110)被配置为用于记录第一波束形成器音频信号,并且第二波束形成器被配置用于当第一波束形成器(110)和第二波束形成器(120)指向目标位置时记录第二波束形成器音频信号, 到第一和第二记录特性。 第一波束成形器(110)和第二波束成形器(120)被布置成使得被定义为穿过第一波束形成器(110)和目标位置的第一虚拟直线和被定义为通过的第二虚拟直线 通过第二波束形成器(120)和目标位置不相对于彼此平行。 信号发生器(130)被配置为基于第一波束形成器音频信号和第二波束形成器音频信号来生成音频输出信号,使得音频输出信号与来自目标位置的音频信息相比,反映来自目标位置的相对更多的音频信息 第一和第二波束形成器音频信号中的目标位置。