Soldato
- Joined
- 24 Mar 2011
- Posts
- 6,479
- Location
- Kent
If you travel over 700mph it's silent.
There'd still be wind noise, I think.
Watch this video onboard concorde going supersonic (and well beyond) - if anything it's louder at 1300mph than it is a 700mph, and the no noisier at 600mph.