نوع : کتابعنوان : آکوستیک معماری مصور | Architectural Acoustics illustratedنویسنده : michael ermannتعداد صفحه : 282زبان : انگلیسی |Englishویرایش : ---سال انتشار : 2015نوع فایل : pdf در فایل فشرده zipحجم فایل : 19 mbرمز فایل : archlib.ir خلاصه کتاب :Sound LevelA sound is made when an oscillating membrane disturbs the molecules in an elastic medium—and that disturbance is heard. While sounds may travel through solids or liquids, in the domain of architectural acoustics, we generally skew our discussion to the elastic medium of air (structureborne sound notwithstanding). A nearby passing bus excites a window pane into vibration, which in turn excites the air molecules near the window, which in turn excite air molecules near the first group of air molecules, and so on, until the band of oscillating molecules reaches the ears of a listener; this creates a sound.