Can you experts please explain to me how to interpret the two graphs below? I have an idea of what is good or bad but I am not the significance in practical term.
1. Linearity:
Q: So it is bad from below about -100 generator level dBFS, but what is the practical meaning here in terms of performance concerns, and what would be the frequency of the test signal for this measurement?
2. IMD
Q: I understood the two tone tests and the IMD expressed in %, but in the ASR's one, I know the lower the better, but again what is the practical meaning/significance of the RZ5100 that was measured at about -22 dB at generator level dBFS of 0 and about -80 dB at generator level of 0?
Q2: Amir mentioned the noise is very high, but I am clear if this makes this graph meaningless in terms of IMD, that is, you can't really tell if it is good or bad because it is clouded by the high noise?
Q3: In practical term, would this make the RZ5100 sound audibly worse than the AVR-X3600H that was measured about -49 dB at generator level -60 dBFS and -87 B at generator level 0 dBFS? I mean vs the Onkyo's -22/-80 that's a huge difference especially at -60 dBFS generator level.
I hope if no one volunteer,
@Amir would explain this or provide a link if explained before how to interpret this two graphs on ASR. Thank you.