|Sound pressure p|
|Particle velocity v|
|Particle velocity level (SVL)|
|(Sound velocity level)|
|Particle displacement ξ|
|Sound intensity I|
|Sound intensity level (SIL)|
|Sound power Pac|
|Sound power level (SWL)|
|Sound energy density E|
|Sound energy flux q|
|Acoustic impedance Z|
|Speed of sound c|
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 in a medium, mostly air. Sound pressure is the local Pressure deviation from the ambient (average or equilibrium pressure caused by a Sound Wave. Particle velocity is the velocity v of a particle (real or imagined in a medium as it transmits a Wave. Particle displacement or particle amplitude (represented in Mathematics by the lower-case Greek letter &xi) is a Measurement The sound intensity, I, (acoustic intensity is defined as the Sound power Pac per unit area A. 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 Sound power or acoustic power P ac 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 a specified reference level The sound energy density or sound density (symbol E or w) is an adequate measure to describe the sound field at a given point as a sound energy value The sound energy q results from the integral Particle velocity v of the surface A, whereby only the portions perpendicularly to the surface In Mathematics, specifically in Topology, a surface is a Two-dimensional Manifold. The acoustic impedance Z (or sound impedance) is a frequency f dependent parameter and is very useful for example for describing the behaviour of musical Sound is a vibration that travels through an elastic medium as a Wave.
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 "Lv".
The unit of the particle velocity level is named "dB".
Notice: The dB is dimensionless. The decibel ( dB) is a logarithmic unit of measurement that expresses the magnitude of a physical quantity (usually power or intensity relative to
If v0 is the standard reference particle velocity of:
we use "dB SVL". (SVL = sound velocity level).