On Fri, 23 Feb 2018 16:56:51 -1000, David W. Jones wrote: >Yes, I understand that 4-foot thick solid stone walls are effective >for that purpose ;) German WWII high-rise bunker provide very well sound reduction by the walls-ceiling-floor combination, but unless you don't want to die from a CO intoxication, the acoustic pitfalls are the ventilation shafts. -- $ pacman -Q linux{,-rt-securityink,-rt,-rt-pussytoes,-rt-cornflower} linux 4.15.4-1 linux-rt-securityink 4.14.20_rt17-1 linux-rt 4.14.12_rt10-1 linux-rt-pussytoes 4.14.8_rt9-2 linux-rt-cornflower 4.11.12_rt16-1 _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx https://lists.linuxaudio.org/listinfo/linux-audio-user