How Loud Is an Airbus 321Neo? What's the Cabin Noise Like?

As promised, some measures taken this year in various flights.

In dB(C) (to take the worst case) from my iPhone app.

BAE 146 / seat 7: AVG 86 dB / peak 91 dB
A319 / seat 8: AVG 81 dB / peak 87 dB
A321 / seat 14: AVG 81 dB / peak 89 dB
Embraer 190 / seat 1: AVG 79 dB / peak 86 dB
Embraer 190 / seat 21: AVG 84 dB / peak 92 dB
A320 / seat 3D (aisle): AVG 81 dB / peak 88 dB
A320 / seat 3A (window): AVG 86 dB
CRJ900 / seat 4A: AVG 79 dB / peak 83 dB

I have also flown other aircraft in the past like several times A380 but did not check the dB at that time. However It was very quiet except once where I had an exit seat.

My experience is:

- Take the seat to the front except for turboprop (with propellers) where you should go to the back
- Avoid exit rows which are much noisier
- Avoid window seats: 4-5 dB higher than aisle in the 3-3 configuration

You will also get some information from the below link:
Quiet, Please: Which Aircraft Are the Quietest in the Sky? (thepointsguy.com)
 
As promised, some measures taken this year in various flights.

In dB(C) (to take the worst case) from my iPhone app.

BAE 146 / seat 7: AVG 86 dB / peak 91 dB
A319 / seat 8: AVG 81 dB / peak 87 dB
A321 / seat 14: AVG 81 dB / peak 89 dB
Embraer 190 / seat 1: AVG 79 dB / peak 86 dB
Embraer 190 / seat 21: AVG 84 dB / peak 92 dB
A320 / seat 3D (aisle): AVG 81 dB / peak 88 dB
A320 / seat 3A (window): AVG 86 dB
CRJ900 / seat 4A: AVG 79 dB / peak 83 dB

I have also flown other aircraft in the past like several times A380 but did not check the dB at that time. However It was very quiet except once where I had an exit seat.

My experience is:

- Take the seat to the front except for turboprop (with propellers) where you should go to the back
- Avoid exit rows which are much noisier
- Avoid window seats: 4-5 dB higher than aisle in the 3-3 configuration
Seems like the A350 is the only quiet plane in the 60s dB range...
 

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