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贝塞尔(Bessel)线性相位滤波器正是由于具有向其截止频率以下的所有频率提供等量延时的特性,才被用于音频设备中,在音频设备中,必须在不损害频带内多信号的
The Bessel linear phase filter is used in audio equipment precisely because it has the property of providing an equal amount of delay to all frequencies below its cutoff frequency, Signal