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    • 55. 发明申请
    • Method for Determining a Time Delay for Time Delay Compensation
    • 用于确定时间延迟补偿的时间延迟的方法
    • US20100150364A1
    • 2010-06-17
    • US12636160
    • 2009-12-11
    • Markus BuckTobias WolffGerhard SchmidtTim Haulick
    • Markus BuckTobias WolffGerhard SchmidtTim Haulick
    • H04B3/20H04R3/00
    • G01S3/807G10L21/02H04M9/082H04R1/406H04R3/005H04R3/02H04R2410/01H04R2430/23H04R2430/25H04R2499/13H04S1/00H04S3/00
    • The invention provides a computer-implemented method for determining a time delay for time delay compensation of a microphone signal from a microphone array in a beamformer arrangement. For a given time, an instantaneous estimate of a position of a wanted sound source and/or of a direction of arrival of a signal originating from the wanted sound source is determined. The computer system then determines whether the instantaneous estimate deviates from a preset estimate of a position of the wanted sound source and/or of a direction of arrival of a signal originating from the wanted sound source according to a predetermined criterion. The predetermined criterion comprises a check whether the instantaneous estimate deviates from the preset estimate by at least a predetermined deviation threshold. If the predetermined criterion is fulfilled, the instantaneous estimate for the given time is set by the computer system as the preset estimate, and the computer system determines the time delay for time delay compensation of the microphone signal based on the instantaneous estimate.
    • 本发明提供了一种计算机实现的方法,用于确定来自波束形成器布置中的麦克风阵列的麦克风信号的时间延迟的时间延迟。 对于给定时间,确定所需声源的位置和/或源自所需声源的信号的到达方向的瞬时估计。 计算机系统然后根据预定标准确定瞬时估计是否偏离预期的所需声源的位置的预设估计和/或源自所需声源的信号的到达方向。 预定标准包括检查瞬时估计是否偏离预设估计至少预定的偏差阈值。 如果满足预定标准,则由计算机系统将给定时间的瞬时估计值设置为预设估计,并且计算机系统基于瞬时估计确定麦克风信号的时间延迟补偿的时间延迟。
    • 56. 发明申请
    • DYNAMIC MICROPHONE SIGNAL MIXER
    • 动态麦克风信号混频器
    • US20130325458A1
    • 2013-12-05
    • US13990176
    • 2010-11-29
    • Markus BuckTimo MathejaAchim Eichentopf
    • Markus BuckTimo MathejaAchim Eichentopf
    • G10L21/0208
    • G10L21/0208H03G3/3005H04R3/005H04R2430/01H04R2430/03
    • A system and method of signal combining that supports different speakers in a noisy environment is provided. Particularly for deviations in the noise characteristics among the channels, various embodiments ensure a smooth transition of the background noise at speaker changes. A modified noise reduction (NR) may achieve equivalent background noise characteristics for all channels by applying a dynamic, channel specific, and frequency dependent maximum attenuation. The reference characteristics for adjusting the background noise may be specified by the dominant speaker channel. In various embodiments, an automatic gain control (AGC) with a dynamic target level may ensure similar speech signal levels in all channels.
    • 提供了在嘈杂环境中支持不同扬声器的信号组合系统和方法。 特别是对于通道之间的噪声特性的偏差,各种实施例确保扬声器变化时背景噪声的平滑过渡。 修改的噪声降低(NR)可以通过应用动态,信道特定和频率相关的最大衰减来实现所有信道的等效背景噪声特性。 用于调整背景噪声的参考特性可以由主扬声器通道指定。 在各种实施例中,具有动态目标电平的自动增益控制(AGC)可以确保所有信道中的类似语音信号电平。