Particle velocity Guide, Meaning , Facts, Information and Description

Particle velocity or sound particle velocity or sound velocity is the velocity v of air particles in m/s. It is not to be confused with the speed of sound c, also measured in m/s. Usually in acoustics the particle velocity is measured as the particle velocity level L_v in decibels.

The particle velocity v in m/s is:

Sound pressure p in N/m² = Pa
Acoustic impedance, sound impedance, or Characteristic impedance Z in N·s/m³
Sound intensity J in W/m²

The sound velocity is connected to particle displacement or particle amplitude ξ in m by:

acoustic impedance Z in N·s/m³
sound velocity v in m/s
frequency f in Hz
sound pressure p in N/m² = Pa
angular frequency ω = 2 · π · f

External link

• Ohm's law of the acoustics - calculations
• The sound velocity (particle velocity) can be directly measured with a Microflown

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