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ENGINEERING ACOUSTICS EE 363N
(p,q,r) modes ....................28
2qHP half-power beamwidth
.........................................16
A absorption......................27
a absorption coefficient ....21
absorption..........................27
average .........................27
measuring.....................27
absorption coefficient ..21, 28
measuring.....................21
acoustic analogies................8
acoustic impedance........3, 10
acoustic intensity ...............10
acoustic power...................10
spherical waves ............11
acoustic pressure..............5, 9
effective..........................5
adiabatic ........................7, 36
adiabatic bulk modulus........6
ambient density................2, 6
amp......................................3
amplitude.............................4
analogies..............................8
anechoic room ...................36
arbitrary direction plane
wave ..................................9
architectural absorption
coefficient........................28
area
sphere ...........................36
average absorption.............27
average energy density ......26
axial pressure.....................19
B bulk modulus..................6
band
frequency......................12
bandwidth..........................12
bass reflex..........................19
Bessel J function..........18, 34
binomial expansion............34
binomial theorem...............34
bulk modulus.......................6
C compliance......................8
c speed of sound .................3
calculus..............................34
capacitance ..........................8
center frequency ................12
characteristic impedance....10
circular source ...................15
cocktail party effect ...........30
coincidence effect..............22
complex conjugate.............33
complex numbers ..............33
compliance ..........................8
condensation................2, 6, 7
conjugate
complex........................33
contiguous bands ...............12
coulomb...............................3
Cp dispersion ....................22
Cramer's rule .....................23
critical gradient..................32
cross product .....................35
curl ....................................36
D(r) directivity function ...16
D(q) directivity function..14,
15, 16
dB decibels .............2, 12, 13
dBA...................................13
decibel .....................2, 12, 13
del......................................35
density .................................6
equilibrium.....................6
dependent variable.............36
diffuse field .......................28
diffuse field mass law........22
dipole.................................14
direct field ...................29, 30
directivity function 14, 15, 16
dispersion ..........................22
displacement
particle .........................10
divergence .........................35
dot product ........................35
double walls ......................23
E energy density...............26
E(t) room energy density..26
effective acoustic pressure...5
electrical analogies ..............8
electrical impedance ..........18
electrostatic transducer ......19
energy density ...................26
direct field ....................29
reverberant field ...........30
enthalpy.............................36
entropy ..............................36
equation of state ..............6, 7
equation overview ...............6
equilibrium density..............6
Euler's equation .................34
even function.......................5
expansion chamber......24, 25
Eyring-Norris ....................28
far field..............................16
farad ....................................3
fc center frequency............12
fl lower frequency.............12
flexural wavelength ...........22
flow effects........................25
focal plane .........................16
focused source...................16
Fourier series.......................5
Fourier's law for heat
conduction .......................11
frequency
center............................12
frequency band ..................12
frequency band intensity
level .................................13
fu upper frequency ............12
gas constant .........................7
general math ......................33
glossary .............................36
grad operator .....................35
gradient
thermoacoustic.............32
gradient ratio .....................32
graphing terminology ........36
H enthalpy........................36
h specific enthalpy............36
half-power beamwidth ......16
harmonic wave ..................36
heat flux ............................11
Helmholtz resonator..........25
henry ...................................3
Hooke's Law........................4
horsepower..........................3
humidity ............................28
hyperbolic functions..........34
I acoustic intensity10, 11, 12
If spectral frequency density
........................................13
IL intensity level...............12
impedance .....................3, 10
air 10
due to air ......................18
mechanical ...................17
plane wave ...................10
radiation .......................18
spherical wave .............11
incident power...................27
independent variable .........36
inductance ...........................8
inertance..............................8
instantaneous intensity ......10
instantaneous pressure.........5
intensity.......................10, 11
intensity (dB) ..............12, 13
intensity spectrum level.....13
intervals
musical.........................12
Iref reference intensity.......12
isentropic...........................36
ISL intensity spectrum level
........................................13
isothermal..........................36
isotropic.............................28
joule ....................................3
k wave number ...................2
k wave vector .....................9
kelvin ..................................3
L inertance..........................8
Laplacian...........................35
line source .........................14
linearizing an equation ......34
LM mean free path.............28
m architectural absorption
coefficient........................28
magnitude..........................33
mass
radiation .......................18
mass conservation ........... 6, 7
material properties.............20
mean free path...................28
mechanical impedance ......17
mechanical radiation
impedance ....................... 18
modal density.................... 28
modes................................ 28
modulus of elasticity ........... 9
momentum conservation . 6, 8
monopole .......................... 13
moving coil speaker .......... 17
mr radiation mass ............. 18
mufflers....................... 24, 25
musical intervals ............... 12
N fractional octave ........... 12
n number of reflections .... 28
N(f) modal density............ 28
nabla operator ................... 35
natural angular frequency.... 4
natural frequency ................ 4
newton................................. 3
Newton's Law ..................... 4
noise.................................. 36
noise reduction .................. 30
NR noise reduction .......... 30
number of reflections ........ 28
octave bands...................... 12
odd function ........................ 5
p acoustic pressure ......... 5, 6
Pa ........................................ 3
particle displacement... 10, 22
partition............................. 21
pascal .................................. 3
paxial axial pressure ........... 19
Pe effective acoustic
pressure ............................. 5
perfect adiabatic gas............ 7
phase ................................. 33
phase angle.......................... 4
phase speed ......................... 9
phasor notation.................. 33
piezoelectric transducer..... 19
pink noise.......................... 36
plane wave
impedance.................... 10
velocity .......................... 9
plane waves......................... 9
polar form ........................... 4
power .......................... 10, 11
SPL.............................. 29
power absorbed ................. 27
Pref reference pressure ...... 13
pressure ........................... 6, 9
progressive plane wave ....... 9
progressive spherical wave11
propagation ......................... 9
propagation constant ........... 2
Q quality factor ................ 29
quality factor ..................... 29
r gas constant ..................... 7
R room constant ............... 29
radiation impedance .......... 18
radiation mass ................... 18
radiation reactance ............ 18
rayleigh number ................ 16
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Engineering Acoustics_요약문.pdf
