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    • 8. 发明申请
    • FEEDBACK CANCELING SYSTEM AND METHOD
    • 反馈取消系统和方法
    • US20140254825A1
    • 2014-09-11
    • US14201148
    • 2014-03-07
    • BOARD OF TRUSTEES OF NORTHERN ILLINOIS UNIVERSITY
    • Mansour Tahernezhadi
    • H04R3/04
    • H04R3/02
    • Reducing feedback in an input signal that contains a signal component based on an output signal from a proximate output. The input signal is separated into a plurality of frequency bands by band pass filters. The power of signal in each band is determined, and the band signal with the greatest power is selected. That band's signal is sampled at a sampling rate, and at regular intervals one of the samples is selected. Blind signal separation is used to estimate signal sources from the selected samples. The estimated signals are compared to the output signal, and the estimated signal most similar to the output signal is subtracted from the input signal.
    • 基于来自邻近输出的输出信号减少包含信号分量的输入信号中的反馈。 输入信号通过带通滤波器分离成多个频带。 确定每个频带中的信号功率,并选择功率最大的频带信号。 该频带的信号以采样率进行采样,并且以规则的间隔选择样本之一。 盲信号分离用于估计所选样品的信号源。 将估计的信号与输出信号进行比较,并从输入信号中减去与输出信号最相似的估计信号。