Seven Acoustic Parameters Flashcards
Propagation Speed
Rate at which sound wave travels through a medium
What are the units of speed?
m/s
What is speed determined by?
Medium
What is the typical values of speed?
1,500-1,600 m/s
Is speed adjustable?
NO
Intensity
Concentration of energy in a sound beam
What are the units of intensity?
Watts/cm2, dB
What is intensity determined by?
Sound source
What are the typical values of intensity?
0.01-300 W/cm2
Is intensity adjustable?
YES! Alter the initial intensity of a wave
Period
The time it takes one wave to vibrate one single cycle
What are the units of period
Seconds microseconds time
What is period determined by?
Sound source
What are the typical values of period
0.06-0.5 microseconds
Is period adjustable
NO
Wavelength
Distance or length of 1 complete cycle
What are the units of wavelength
mm distance
What is wavelength determined by?
Both sound source and medium
What are the typical values of wavelength
0.1-0.8 mm
Is wavelength adjustable?
No
Frequency
Is the number of particular events that occur in a specific duration of time
What are the units of frequency
Per second Hz
What is frequency determined by?
Sound source
What are the typical values of frequency?
2-15 MHz
Can frequency be adjusted?
No
Amplitude
Difference between the max value and average or undisturbed value of an acoustic variable
What are the units of amplitude?
Pascal cm, g/cm3, dB
What is amplitude determined by?
Sound source
What are the typical values of amplitude
1MPa- 3MPa
Can you adjust amplitude?
YES! Alter initial amplitude of a wave
Power
Rate at which energy transfered
What are the units of Power?
0.004-0.090 watts
what is power determined by?
Sound Source
Is power adjustable?
YES! Alters initial power of a wave
