Используйте «amplitude modulation» в предложении

1. So, along with energy and mass characteristics of elementary particles and waves, their information parameters, such as polarization, character of the leading edge and “decline” of a wave, amplitude modulation and frequency modulation of a signal, spin, color, scent, energy level of manifestation, play a great role

2. This signaling scheme is called Pulse Amplitude Modulation 5 (PAM-5)