自然界中的一切简谐振动,包括机械振动、声波、电子振荡等等,都遵循正弦函数的规律。不仅如此,任何复杂的振动过程,都可以分解为频率、相位和幅度各不相同的若干正弦波;反过来说,用频率、相位和幅度各不相同的正弦波,可以合成逼近任何复杂的振动过 All harmonic vibration in nature, including mechanical vibration, sound waves, electronic oscillations, etc., follow the law of the sine function. Not only that, any complex vibration process can be decomposed into several sinusoidal waves of different frequencies, phases and amplitudes; conversely, it is possible to synthesize approximations of any complex vibration using sinusoidal waves of different frequencies, phases and amplitudes Too