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- #21
Ok. Shorted input/output causes the difference between signal to measured input to equal zero means it has no phase shift.In a measured system where all frequencies of the stimulus pass through the system with the same delay the phase plot will be flat.
Loopback measurement (wired output to input), 96 Khz SR, 48 Khz BW, 20 Hz - 24 KHz displayed, ≈ -12 dBFS, phase highlighted:
View attachment 242317
When difference occurs, which is inevitable when measuring in reality, a shift in phase occurs due to time delay?
The reason for the wrapped phases to be longer apart in low frequencies is because of the longer delays due to the larger soundwaves?
The more dampening in the room, the more the unwrapped phase will flatten and approach 0 °?