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Appendix B
Acoustic output data
The meaning of each symbol in the sound output table:
Symbol
Meaning
Α
Acoustic attenuation coefficient
A
aprt
-12dBOutput acoustic beam area
D
eq
Equivalent pore diameter
d
eq
Equivalent sound beam diameter
f
awf
Sound working frequency
I
pa
Pulse average sound intensity
I
pa,α
Average sound intensity after attenuation
I
pi
Impulsive sound intensity integral
I
pi, α
Pulse sound intensity integral
I
ta
(z)
Time average sound intensity
I
ta, α
(z)
Decay time average sound intensity
I
zpta
(z)
Spatial peak time average sound intensity
I
zpta, α
(z)
Decay time space peak time average sound intensity
MI
Mechanical index
P
output power
P
α
Output power after attenuation
P
1
Bounded output power
p
i
Pulse sound pressure square integral
p
r
Peak sparse sound pressure
p
r.a
Peak sparse sound pressure
Prr
Pulse repetition frequency
TI
Thermal index
TIS
Soft tissue thermal index
TIB
Bone thermal index
TIC
Skull thermal index
Z
Distance from the sound source to the specified point
z
b
Distance from the sound source to the specified point
z
bp
Breakpoint depth