음향소음진동솔루션 Noise & Vibration

Spectrum, Auto Spectrum, Power Spectral Density, Cross Spectrum Spectrum 시간 영역의 함수를 Fourier Transform 을 하면 주파수 스펙트럼 (spectrum) 이 생성되며 , 이것은 각 주파수의 진폭과 위상의 복합으로 나타난다 . Plots the magnitude of a periodic frequency component at a discrete frequency. It is computed as the square root of the average auto spectrum. For an accelerometer, for example, the units for Spectrum are represented as g. Typically, Spectrum is best for narrowband, deterministic signals. ​ Auto Spectrum (Power Spectrum) ​ 주로 랜덤한 신호에 대해서 각 주파수 영역상의 에너지 분포를 보기 위해 사용하는 방법이다. A single-channel display function that plots the power of a periodic frequency component at a discrete frequency. For an accelerometer, for example, the units for Auto Spectrum are represented as g2 . Typically, Auto Spectrum is best for narrowband, deterministic signals. The Power Spectrum is simply the magnitude of the total spectrum. The Power Spectrum is commonly used in many applications where phase information is no...