Chapter 2 - Sound Flashcards
Acoustic Variables
Pressure
Density
Distance (particle motion)
Temperature
Pressure
Concentration of force within an area
Density
Concentration of mass within a volume
Distance
Measure of particle motion
Temperature
Measurement of heat
Period
The time required to complete a single cycle
Frequency
cycles that occur in 1 second
Ultrasound
Hz measurement
<20000Hz
Audible sound
Hz Measurenent
20Hz-20000Hz
Infrasound
Hz measurement
<20Hz
Frequency & period equation
Period = 1/frequency
Frequency = 1/period
Triangle
Bigness parameters
Amplitude
Power
Intensity
Amplitude
Maximum variatition in a acoustic variable
Power
Rate of energy transference
Intensity
Concentration of energy in a sound beam
Intensity equation
Intensity = power/beam area
Wavelength
The distance of a single cycle
Propitiation speed
The rate that sound travels through a medium
Also called velocity or speed
Interference
When two waves overlap at the same location at the same instant in time
Constructive interference
Add two waves together
Destructive interference
Subtract waves from each other