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A quantity representing the fraction of cycle of a periodic signal, usually represented as an angle.

0 votes
1 answer
75 views

Using I/Q demodulation/LIA for a fixed-frequency application of several signals - do the pha...

I can control their phases, and I'm wondering if there are any best practices to make sure I get the cleanest possible separation of the four signals, or if the phase won't matter? …
Ben S.'s user avatar
  • 192
4 votes
2 answers
2k views

Why is my DFT/FFT always 90° out of phase?

However, the phase at the sine wave's frequency is always -90°. Here's the code. … Is there something about phase that I'm not understanding? …
Ben S.'s user avatar
  • 192