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    • 10. 发明公开
    • Adaptive noise control system with improved robustness
    • AdaptorsRauschunterdrückungsystemmit verbesserter Robustheit
    • EP2996112A1
    • 2016-03-16
    • EP14184290.6
    • 2014-09-10
    • Harman Becker Automotive Systems GmbH
    • Christoph, MarkusWurm, Michael
    • G10K11/178
    • G10K11/1784G10K11/178G10K2210/128G10K2210/1282G10K2210/3026G10K2210/3027G10K2210/3046G10K2210/3048G10K2210/3055G10K2210/3057G10K2210/3214G10K2210/504
    • A method for determining an estimation of a secondary path transfer characteristic in an ANC system is described herein. In accordance with one example of the invention, the method includes the positioning of a microphone array in a listening room symmetrically with respect to a desired listening position and reproducing at least one test signal using a loudspeaker arranged within the listening room to generate an acoustic signal. The acoustic signal is measured with the microphones of the microphone array to obtain a microphone signal from each microphone of the microphone array, and a numerical representation of the secondary path transfer characteristic is calculated for each microphone signal based on the test signal and the respective microphone signal. The method further includes averaging the calculated numerical representations of the secondary path transfer characteristic to obtain the estimation of the secondary path transfer characteristic to be used in the ANC system.
    • 本文描述了用于确定ANC系统中的二次路径传送特性的估计的方法。 根据本发明的一个示例,该方法包括将麦克风阵列相对于期望的收听位置对称地定位在收听室中,并且使用布置在收听室内的扬声器再现至少一个测试信号,以产生声信号 。 用麦克风阵列的麦克风测量声学信号以从麦克风阵列的每个麦克风获得麦克风信号,并且基于测试信号和相应麦克风计算每个麦克风信号的次要路径传递特性的数字表示 信号。 该方法还包括对二次路径传递特性的计算数值表示进行平均,以获得在ANC系统中使用的二次路径传递特性的估计。