Summary
Samenvatting Formularium akoestisch comfort (Monika)
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Alle te kennen formules voor akoestisch comfort
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FREQUENTIE Hz = 1/sAMPLITUDE 𝑝𝐴
𝑝eff = 𝑝rms = (Pa)
√2
GELUIDSSNELHEID LUCHT 𝑇 m T = temperatuur in °C
331,5√1 + 273,15 (s)
GELUIDSSNELHEID 𝐾 m K=
𝑐 = √𝜌 (s)
VLOEISTOFFEN compressiemodulus
(Pa)
𝜌 = dichtheid (kg/m^3)
GELUIDSSNELHEID VASTE 𝐸 m E=
𝑐=√ ( )
STOFFEN 𝜌 s elasticiteitsmodulus
(kg/m.s)
𝜌 = dichtheid (kg/m^3)
2
GELUIDSINTENSITEIT 𝑃 P = vermogen (W)
𝐼= (W/m )
𝑆 S = oppervlakte
GELUIDSINTENSITEIT ALS
PRODUCT VAN RMS DRUK
EN RMS
DEELTJESSNELHEID
GELUIDSNIVEAU p12 p po = 2.10-5 Pa
Lp = 10.log = 20.log 1 (dB)
po 2
po Io = 10-12 W.m-2
Wo = 10-12 W
I1
LI = 10.log (dB)
Io
W1
LW = 10.log (dB)
Wo
GELUIDSNIVEAU æ Lp1 Lp2 Lp3 Lpn
ö
Lp = 10.log ç 10 10 +10 10 +10 10 + ... +10 10 ÷
MEERDERE BRONNEN è ø
LIJNBRON 1 -3dB per
𝐼=𝑟
afstandsverdubbeling
PUNTBRON 1 -6dB per
𝐼 = 𝑟2
afstandsverdubbeling
GELUIDDRUKNIVEAU OP æ Q ö
Lp = Lw +10log ç (dB)
AFSTAND R (BUITEN) è 4p r 2 ÷ø
GELUIDDRUKNIVEAU OP æ Q 4(1- a ) ö
Lp = Lw +10log ç + (dB)
AFSTAND R (BINNEN) è 4p r 2
A ÷ø
GELUIDSSNELHEID IN r R = afstand (m)
FUNCTIE VAN STRAAL EN c= T = tijd (s)
TIJD t
ABSORPTIE Ei - Er α = 1 – r (-)
a= (-)
Ei
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