Chinese 包络 Cited by user 書畫晝盡 on 19 Oct 2023 物理学和工程学中,震荡信号的包络是一条勾勒出极值的光滑曲线. 因此,包络将恒定振幅的概念推广为瞬时振幅. 下图展示了在上包络与下包络之间振荡的调制正弦曲线. 包络函数可以是时间、空间、角度或任何变量的函数.
English Envelope (waves) Cited by user Citation bot on 16 Sep 2021 In physics and engineering, the envelope of an oscillating signal is a smooth curve outlining its extremes.