The particle velocity level or the sound velocity level tells the ratio of a sound incidence in comparison to a reference level of 0 dB.

It shows the ratio of the particle velocity v₁ and the particle velocity v₀.
Particle velocity is the velocity v of a particle (real or imagined) in a medium as it transmits a wave. ...

The particle velocity level is:

where v₁ and v₀ are the velocities.

The particle velocity level has the letter "L_v".

The unit of the particle velocity level is named "dB". The word unit means any of several things: Physical unit, a fundamental quantity of measurement in science or engineering Units (computer program), a popular program that does unit conversion. ...

Notice: The dB is dimensionless. Although it is widely used as a measure of the loudness of sound, the decibel (dB) is more generally a measure of the ratio between two quantities, and can be used to express a wide variety of measurements in acoustics and electronics. ...

If v₀ is the standard reference particle velocity of:

we use "dB SVL". (SVL = sound velocity level).

Sound measurements

• Sound power
• Sound power level (SWL)
• Sound pressure
• Sound pressure level (SPL)
• Sound intensity
• Sound intensity level (SIL)
• Particle velocity
• Particle velocity level (sometimes called Sound velocity level) (SVL)
• Sound energy flux
• Acoustic impedance
• Speed of sound

Sound power or acoustic power is a measure of sonic energy E per time t unit. ... Sound power level or acoustic power level is a logarithmic measure of the sound power in comparison to the reference level of 0 dB (decibels). ... Sound pressure p (or acoustic pressure) is the measurement in pascals of the root mean square (RMS) pressure deviation (from atmospheric pressure) caused by a sound wave passing through a fixed point. ... It has been suggested that this article or section be merged with Sound pressure. ... The sound intensity, J, (acoustic intensity) is defined as the sound power Pac per unit area A. The usual context is the measurement of sound intensity in the air at a listeners location. ... Sound intensity level or acoustic intensity level is a logarithmic measure of the sound intensity in comparison to the reference level of 0 dB (decibels). ... Particle velocity is the velocity v of a particle (real or imagined) in a medium as it transmits a wave. ... The sound energy flux is the average rate of flow of sound energy for one period through any specified area. ... The acoustic impedance Z (or sound impedance) is the ratio of sound pressure p to particle velocity v in a medium or acoustic component. ... The speed of sound c (from Latin celeritas, velocity) varies depending on the medium through which the sound waves pass. ...

See also

• | Sound velocity level |