Impressive indeed, well done Honda.
Sounds a hell of a lot better than the cars of today, it'll be interesting to hear what the 1.6 v6 turbo sounds like...
This is the official sound clip Renault uploaded onto their website, It's the 2014 1.6 v6 Turbo engine. I couldn't be bothered browsing their website for the clip again so I just searched YouTube for this particular one, judging by people's responses I don't see these engines being too popular but anyway we can only wait and see.
A vacuum cleaner is the best description for it. A large part of watching a F1 race in person is the sound.
They're going to receive alot of criticism and rightly so.