What does acoustic mean?
sound waves
Sound waves are and what do they convey ?
machanical waves which convey enegery from one location to another through vibration of molecusl in the medium
As sound travles molecules undergo
compression & rarefaction
What are the 3 acoustic variables ?
- Pressure
- Density
- Distance
What does pressure represent?
An acoustic variablle for
pressure concentration of force in an area
unit: pascals , PA
What does Density represent?
An acoustic variablle for
Density the concentration of mass in a volume
unit: kg /cm^3
What does Distance represent?
An acoustic variablle for
Distance a measure of particles motion
unit: mm or cm
What does acoustic variables mean?
variables discern from sound waves from other waves like light.. heat etc
What is acoustic parameters?
describes the 7 acoustic parameters properties of sound waves
What is interferenace
loss of sound waves as the two waves mesh to form a single wave
Which acoustic variable is concentraton of force in an area?
A. Pressure
B. Intensity
C. Power
A. Pressure
Name the Seven Acoustic Parameters?
- Period
- Frequency
- Amplitude
- Power
- Intensity
- Wavelength
- Propagation Speed
What term describes the area of increased molecular density in sound wave?
A. Refraction
B. Rarefaction
C. Compression
D. Propagation
C. Compression
What is the primary reason sound waves cannot travel in outer space?
A. Absence of molecules
B. Intense radiation levels
C. Lack of electromagnetic enegry
D. Zero gravity
A. Absence of molecules
Which Factor(s) determines the speed of sound in a medium?
A. Density & stiffness
B. Frequency
C. Wavelength
D. Intensity
A. Density & stiffness
