A hard-plastered wall is a better
reflector of sound than most
mirrors are of light; sound waves
may travel for miles in large and
empty rooms before dying away.
A room for acoustic research is
thickly lined with cotton wool on
the floor, walls and ceiling, and is
so absorbent that speech and
music become unnatural.
Antiphone
Ardente public address system
Boeing
Concrete breaker
Ear defenders, protectors and stops
Ear plugs and percussion resisters
Floating floor
Linatex age-resisting rubber
Pip
Silenta typewriters
Soundex flesh-coloured vulcanite
Spandit silent rubber toys
Top
Toyot
Toyot
Top
Spandit silent rubber toys
Soundex flesh-coloured vulcanite
Silenta typewriters
Pip
Linatex age-resisting rubber
Floating floor
Ear plugs and percussion resisters
Ear defenders, protectors and stops
Concrete breaker
Boeing
Ardente public address system
Antiphone
A room for acoustic research is
thickly lined with cotton wool on
the floor, walls and ceiling, and is
so absorbent that speech and
music become unnatural.
A hard-plastered wall is a better
reflector of sound than most
mirrors are of light; sound waves
may travel for miles in large and
empty rooms before dying away.
