脉冲频率调制(Pulse Frequency Modulation) PFM
宽带调频(Wide Band Frequency Modulation) WBFM
线性调频信号(Linear Frequency Modulation Signal) LFM
非线性调频(Non Linear Frequency Modulation) NLFM
方波调频(Square Wave Frequency Modulation) SWFM
调幅调频(Amplitude Modulation Frequency Modulation) AMFM
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