在自适应信号的理想输入为有正弦信号。噪声输入也为一正弦信号。它们相互迭加，再经过LMS自适应算法，再比较它们的结果。-In an ideal adaptive signal has sinusoidal input signal. Noise input for a sinusoidal signal. Their mutual superposition, and then after LMS adaptive algorithm, and then compare their results