frequency-modulated signal造句

Abstract : a software method of frequency - modulated signal demodulating based on wavelet packet is proposed in this paper . a variety of frequency - modulated signals are analyzed in time - frequency domain and the spectrograms are presented . this method can detect instantaneous frequency effectively and get frequency - modulated information , can be widely applied to dynamic testing and software radio
文摘:提出了基于小波包的调频波解调方法，通过对各种调频信号进行时频分析，给出了信号的时间?频率谱图，能有效地检测到瞬时频率和获取调频信息，该方法可广泛应用于动态测试和软件无线电等领域。
It's difficult to find frequency-modulated signal in a sentence. 用frequency-modulated signal造句挺难的