Flew on a Dash 8 this evening.
You can feel the vibrations through the wall panels. However, it's the noise that does you. In the air it's ok. On the ground, much less so.
Today, whilst taxiing, it was as if you could hear two separate noises, with different frequencies. I was in row 15, adjacent the starboard engine. Not the first time I've noticed this on this aircraft.
The overhead lockers are also very small, depth wise. Good job the flight was only 50 minutes.
Despite all this, they do appear a good fit for the job.
Seem to recall a similar discussion on here some years ago that mentioned some in-built white noise?