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日期:2025-04-25
HELP .. how to write fft code in matlab .. not using the fft source funtion.. thanks in advance ... Hi Adraino, I found you post very useful, and infact it is not difficult to understand what you mean. However, I need one more help. I have a data in frequ...
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日期:2025-04-25
This example shows the use of the FFT function for spectral analysis....
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日期:2025-04-24
This example shows the use of the FFT function for spectral analysis....
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日期:2025-04-24
The DFT is extremely important in the area of frequency (spectrum) analysis ... Figure 1 shows the DFT (implemented with Matlab's FFT function) of a cosine with....
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日期:2025-04-26
This example shows the use of the FFT function for spectral analysis. ... First create some data. Consider data sampled at 1000 Hz. Start by forming a time axis for our data, running from t=0 until t=.25 in steps of 1 millisecond....
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日期:2025-04-29
2. FFT plot – plotting raw values against Normalized Frequency axis: In the next version of plot, the frequency axis (x-axis) is normalized to unity. Just divide the sample index on the x-axis by the length \(N\) of the FFT. This normalizes the x-...
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日期:2025-04-30
This example shows how to use the FFT function to analyze the variations in
sunspot activity over the last 300 years....
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日期:2025-04-24
This example shows how to use the FFT function to analyze the variations in
sunspot activity over the last 300 years....