The NEO is whisper quiet compared to the 320 CEO. Still has the barking dog tho.
The 145 is annoying, every warning and caution is dumb, if it meets the criteria, ding, ding, and ding, There's no thought for phase of flight. Of course the cabin door is open, we're at the gate, master warning ding. Of course there low engine oil pressure, the engine is shutdown normally. But there's no warning for engine running with the master fadec switch off. It got to the point where I just ignored every warning or caution that the emb-145 generated.
There was an email one day warning about making sure the engine was shutdown before leaving the aircraft. Because I guess a crew left the engine running because they missed it amidst all the other nuisance warnings in the emb-145 cockpit.
Nuissance warnings are a growing issue. When you have aircraft design by committee, everyone wants every possibility shouted out.
I'm curious as to why the NEO is so much quieter than the CEO. It was previously mentioned up thread that the CRT cooling was loud in early CEOs, is there anything else worthy of note between the CEO and NEO? Was more noise insulation added, new avionics reducing cooling need... I'm just curious, any information would be appreciated. For the record, I've never done any design work, other than flight software, up in the cockpit, so I'm very curious as to the design evolution.