SPI Relationships Flashcards
As frequency increases, period will
decrease
As frequency decreases, period will
increase
Frequency and period are ____ related
inversely
Frequency is determined only by
the sound source
Wavelength is
propagation speed / frequency
Wavelength is __ related to frequency
inversely
Propagation speed is
Frequency x wavelength
Propagation speed is determined only by
characteristics of the medium (density, stiffness)
Propagation speed is also known as
velocity
If density increases, the speed
decreases
If stiffness increases, speed
increases
if compressibility increases, the speed will
decrease
Amplitude units are
decibels
Amplitude is determined by
the sound source
Amplitude _____ as sound propagates thru body
decreases
If the amplitude is halved, the power is what?
quartered
When waves amplitude is tripled, the power is increased how much
9x
Power is __ related to amplitude
directly
If amplitude is doubled, the intensity is
increased 4x
Intensity is equal to
power/beam area
Intensity is __ related to power and amplitude
directly
If power is doubled, the intensity is
doubled
Intensity is also equal to
the amplitude squared
Pulse duration is equal to
(of cycles in pulse X period#)and (# of cycles in pulse/frequency)
Pulse duration will increase if the period
increases
