通过LabVIEW的FFT.vi与Complex To Polar.vi组合,或直接调用Sound and Vibration Toolkit的Amplitude and Phase Spectrum.vi,可高效实现信号频谱的幅值与相位提取。结合物理校准与工业场景需求(如故障诊断、声学测试),此方案兼顾精度与实时性,已广泛应用于机电设备监测、音频工程等领域。
本文讲述的是Origin中的FFT中的Frequency(频率), Complex(复数), Real(实数), Imaginary(虚部), Magnitude(幅度), Amplitude(振幅), Phase(相位), Power as MSA(功率 MSA),dB的含义 首先要明确,FFT虽然名义上为Fast Fourier transform,快速傅里叶变换,但这是一个错误的命名方式,翻译时也沿用了。他计算的根本...
幅值与相位提取:通过Complex To Polar.vi(路径:数学 → 数值 → 复数 → Complex To Polar),将复数分解为幅值(Magnitude)和相位(Phase,弧度制)。 2. 声音振动工具包(SVT)增强方案 若已安装Sound and Vibration Toolkit,可使用以下高阶VI简化流程: SVT频谱分析: Amplitude and Phase Spectrum.vi(路径:Sound and...
Finally, the appendix presents an outline of somewhat lengthy demonstrations needed to calculate the amplitude and especially phase inaccuracies due to the round-off noise of FFT processors.Settimi, A
amplitude and the phase of the first harmonic of my spectrum, I must repeat this for all the pixels of the image to finally build from all phases and amplitudes computed a phase image and an amplitude image. it's my first time working with FFT ,can someone help me please with a ...
另外呢,傅里叶级数有其他的形式,就是”振幅-相位”(amplitude-phase)形式: f(x)=A02+∑N=1NAncos(2πnxP−ϕn) 其中振幅序列 An=an2+bn2 ,相位 ϕn=atan2(bn,an)。这种形式可能是在做数字信号处理里面,我们比较关心的一种。 那么好了,现在我们有了一个已知的函数 f(x) ,要怎么求得这些三...
Torch FFT: Amplitude and Phase Analysis Introduction Fast Fourier Transform (FFT) is a widely used algorithm in signal processing and image analysis. It allows us to convert a time-domain signal into its frequency-domain representation bydecomposing it into different sinusoids. The Torch library prov...
The DFT bins corresponding to your complex exponentials contain the complex amplitude (amplitude and phase), but if you take the modulus you should recover your X1 and X2. 댓글 수: 0 댓글을 달려면 로그인하십시오. 이 질문에 답변하려면 로그...
(DFT). A signal is sampled over a period of time and divided into its frequency components. These components are single sinusoidal oscillations at distinct frequencies each with their own amplitude and phase. This transformation is illustrated in the following diagram. Over the time period measured...
I´m trying to understand or fix this, so i can later try to make the data also export amplitude and phase rather then only hthe Real and Imaginary frequyenceis to be used on a spectogram https://www.gaussianwaves.com/2015/11/interpreting-fft-results-obtaining-magnitude-and-phase-infor...