Not surprisingly faster = noisier.
747 is noisier than 767. (M 0.85 vs 0.79)
777 is noisier than 767 (M 0.84 vs 0.790) same nose!
737NG is noisier than 737 classic (M 0.78 vs 0.74) same nose.
The 747 would be noisier still if it were not for the beautifully curved windscreen.- glad I don't have to try to make that glass!
Have flown all of the above and none are really that noisy except low level high speed cruise.
However all ARE noisy enough to give long term hearing loss hence the noise cancelling head sets many airlines now use.