ThisdescriptorthatisdesignatedDL2andmeasuredindBstatesthegradientofthesoundpropagationcurve.AnotherdescriptordesignatedDLfandalsomeasuredindB,stateshowthesoundlevelatacertaindistancebehavesinrelationtothesoundlevelatthesamedistanceinafreesoundfield,i.e.withoutreflectingobjects.ByincreasingtheDL2valueandsimultaneouslyreducingtheDLfvalue,thedistancetotheplacewherethesoundlevelisnolongerdisturbing(distracting)willhavedecreased.

This descriptor that is designated DL 2 and measured in dB states the gradient of the sound propagation curve. Another descriptor designated DL f and also measured in dB, states how the sound level at a certain distance behaves in relation to the sound level at the same distance in a free sound field, i.e. without reflecting objects. By increasing the DL 2 value and simultaneously reducing the DL f value, the distance to the place where the sound level is no longer disturbing (distracting) will have decreased.


Oneofwhichistheabilityto.

One of which is the ability to.


Todaythis"moraleducation"isverystronglyintensified.

Today this "moral education" is very strongly intensified.


2Andthoushaltswear,TheLORDliveth,intruth,injudgment,andinrighteousness;andthenationsshallblessthemselvesinhim,andinhimshalltheyglory.
2 And thou shalt swear, The LORD liveth, in truth, in judgment, and in righteousness; and the nations shall bless themselves in him, and in him shall they glory.