On Sat, 24 Feb 2018 01:04:54 -1000, David W. Jones wrote: >On February 23, 2018 9:32:20 PM HST, Ralf Mardorf ><ralf.mardorf@xxxxxxxxxxxxx> wrote: >> 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. > >The building that inspired my reference was that of a private home in >Sacramento, CA, that had solid stone walls that thick. But it had >windows and doors and was only a single floor, so much better >ventilated than a bunker! Air circulation of a default German WWII high-rise bunker is very good. The waste air escape and air intake of a default bunker works properly and btw. a default bunker has got doors, too, just windows are only provided by expensive controlled blasting operations and perhaps other expensive workings, too. However, apart from small rehearsal rooms for hobby musicians, I used huge audio studios in German WWII high-rise bunkers, too. For the small rehearsal rooms for hobby musicians, as well as the huge audio studios, the sound escapes through ventilation shafts. You could turn of the gas heating or use electric radiators instead and close the ventilation shafts for a while, but the smaller the room/rooms is/are and the more people are working in such a bunker studio, the shorter you could risk doing it. Inside a bunker without windows (some have got windows nowadays), you loose track of time and decades ago my friends and I didn't own gas measurement equipment. _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx https://lists.linuxaudio.org/listinfo/linux-audio-user
