I should (also) point out (that) an AM-FM stereo radio is included.
我还想指出，(上)有调幅-调频立体声收音机。
2
In the paper, the method to estimate instantaneous frequency of AM-FM signals using the peak of the WVD and its performances are studied.
该文研究了应用WVD谱峰检测估计AM - FM信号的瞬时频率的方法及其性能。
3
In this paper, we start from the energy point of view, use AM-FM modulation model and formant frequency, to remove the vocalic interference which vast majority of energy in the useful speech.