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18 Terms
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period
T = 1 / f
T = full time / cycle
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frequency
f = 1 / T
f = c / λ
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amplitude
P ∝ A²
I ∝ A²
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speed
c = e / p
c = f x λ
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wavelength
λ = c / f
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pulse duration and period
PD = # cycles x T
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pulse duration and frequency
PD = # cycles / f
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spatial pulse length
SPL = # cycles x λ
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pulse repetition period
PRP x PRF = 1
PRP = 1 / PRF
PRP = 13μs x depth
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pulse repetition frequency
PRP X PRF = 1
PRF = 1 / PRP
PRF = 77,000 (cm/s) / depth (cm)
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duty factor
DF = PD/PRP x 100
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time of flight
depth = 1.54 x go flight time / 2
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duty factor and SPPA
df x sppa = spta
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beam uniformity
BUR = SP / SA
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q factor
frequency / bandwidth
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Acoustic impedance
Density x propagation speed
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Attenuation coefficient
0.5 (db/cm) / frequency
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axial resolution
SPL / 2
Note 
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