reference range of frequency [通信] 参考频率范围
But if above positive real condition is satisfied only within some frequency range, the convergence of FXLMS algorithm is dependent on the spreading of power spectral density of the reference signal.
若上述正实条件仅在某些频带上满足，则FXLMS算法的收敛将依赖于参考信号功率谱密度的分布。
The A4 reference frequency (calibration) can also be adjusted in a broad range from 410 Hz to 480 Hz.
参考频率的A4（校准）也可以调整从410赫兹到480赫兹在一个广泛的范围内。
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