can be used to determine natural frequencies, resonant peaks, decay curves, harmonics, frequency content and more. Depending on the hardware used to acquire the signals, it can be applied to projects ...
Power-spectral plots generated by frequency sweeps or fast Fourier transforms (FFTs) can show you a signal’s frequency content, but sometimes an FFT provides more detail than you need. If you design ...
Figure 4. A snapshot, in time, of two complex numbers whose exponents, and thus their phase angles, change with time. The notion of negative frequency is often troubling to engineers who've spent so ...
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