Originally Posted by aaranddeeman
As I said, it produces and chirp and that's what it looks to measure. Any noise with the same pattern (e.g. you take hammer and beat it on the wood while Audyssey) might cause the issue. But the random noises in our daily life (fridge compressor, HVAC, kids yelling) should never cause any issue to Audyssey. If it does, then there seems a design flaw.. (I don't think Audyssey says anything, it just recommends to keep it at normal and not too noisy. It may be some folks who have fallen for that idea of super quiet calibration). Just my 2 cents.
The following is taken from the Denon 4520 manual on Audyssey calibration:
Make the room as quiet as possible. Background noise can disrupt
the room measurements. Close windows and turn off the power on
electronic devices (TVs, radios, air conditioners, fluorescent lights,
etc.). The measurements could be affected by the sounds emitted
by such devices.
• During the measurement process, place cell phones outside the
listening room. Cell phone signals could disrupt the measurements.
I think I would tend to follow what Denon says about the situation, they even say keep cell phones outside the listening room. Is it that hard to turn off the fridge and furnace? My fridge, btw, is in the same basic space, albeit on a higher split level. The space measures about 14' x 45', including the upper level.
Anyway, got the calibration done, and it really is impressive! It's very dynamic and clear, and the dialogue is very clear compared with the Onkyo it replaced. Color me happy!