Sound field size

Sound quantities

Sound deflection ${\displaystyle \xi }$ Sound pressure ${\displaystyle p}$ Sound pressure level ${\displaystyle L_{p}}$ Sound energy density ${\displaystyle E}$ Sound energy ${\displaystyle W}$ Sound flow ${\displaystyle q}$ Speed ​​of sound ${\displaystyle c_{\text{S}}}$ Acoustic impedance ${\displaystyle Z}$ Sound intensity ${\displaystyle I}$ Sound power ${\displaystyle P_{\text{ak}}}$ Speed ​​of sound ${\displaystyle v}$ Fast sound amplitude ${\displaystyle v}$ Sound radiation pressure

Sound field quantities are physical alternating quantities that are used to describe the state of a sound field . The sound field sizes include:

• the sound pressure and the derived logarithmic quantity sound pressure level
• the sound velocity and the derived logarithmic quantity sound velocity level
• the sound deflection
• the sound acceleration (particle acceleration)
• the sound flow

The description of a sound field can also have other hydrodynamic e parameters occur for. B. on the fluctuations in density or temperature .

In addition to the sound field parameters, sound energy parameters (e.g. the sound intensity ) are also considered.

Web links

• Waves and fields - recommendation of the German Society for Acoustics (PDF file; 1016 kB)
• Relationship between the acoustic parameters in formulas (PDF file; 109 kB)
• Assessment of sound field size differences in studio eavesdropping conditions (PDF file; English; 193 kB)
• Sound pressure and sound power - effect and cause (PDF; 112 kB)