Sound energy

Short description: Form of energy that can be heard by living things

Sound measurements

Characteristic

Symbols

Sound pressure|  p, SPL,LPA
Particle velocity|  v, SVL
Particle displacement|  δ
Sound intensity|  I, SIL
Sound power|  P, SWL, LWA
Sound energy|  W
Sound energy density|  w
Sound exposure|  E, SEL
Acoustic impedance|  Z
Audio frequency|  AF
Transmission loss|  TL

* * *

* v
* t
* e

In physics, sound energy is a form of energy that can be heard by living things. Only those waves that have a frequency of 20 Hz to 20 kHz are audible to humans. However, this range is an average and will slightly change from individual to individual. Sound waves that have frequencies below 20 Hz are called infrasonic and those above 20 kHz are called ultrasonic. Sound is a longitudinal mechanical wave and as such consists physically in oscillatory elastic compression and in oscillatory displacement of a fluid. Therefore, the medium acts as storage for both potential and kinetic energy.[1]

Consequently, the sound energy in a volume of interest is defined as the sum of the potential and kinetic energy densities integrated over that volume:

W=Wpotential+Wkinetic=∫Vp22ρ0c2dV+∫Vρv22dV,

where

* V is the volume of interest;
* p is the sound pressure;
* v is the particle velocity;
* ρ0 is the density of the medium without sound present;
* ρ is the local density of the medium; and
* c is the speed of sound.

## See also

* Sound energy density

## References

1. ↑ Möser, M.; Müller, G. (2012). Handbook of Engineering Acoustics. Springer. p. 7. ISBN 9783540694601. https://books.google.com/books?id=1cX4AgfUaSkC.

* v
* t
* e

Energy

* Outline
* History
* Index

Fundamental concepts|

* Energy
* Units
* Conservation of energy
* Energetics
* Energy transformation
* Energy condition
* Energy transition
* Energy level
* Energy system
* Mass
* Negative mass
* Mass–energy equivalence
* Power
* Thermodynamics
* Quantum thermodynamics
* Laws of thermodynamics
* Thermodynamic system
* Thermodynamic state
* Thermodynamic potential
* Thermodynamic free energy
* Irreversible process
* Thermal reservoir
* Heat transfer
* Heat capacity
* Volume (thermodynamics)
* Thermodynamic equilibrium
* Thermal equilibrium
* Thermodynamic temperature
* Isolated system
* Entropy
* Free entropy
* Entropic force
* Negentropy
* Work
* Exergy
* Enthalpy

Types|

* Kinetic
* Internal
* Thermal
* Potential
* Gravitational
* Elastic
* Electric potential energy
* Mechanical
* Interatomic potential
* Electrical
* Magnetic
* Ionization
* Radiant
* Binding
* Nuclear binding energy
* Gravitational binding energy
* Chromodynamic
* Dark
* Quintessence
* Phantom
* Negative
* Chemical
* Rest
* Sound energy
* Surface energy
* Mechanical wave
* Sound wave
* Vacuum energy
* Zero-point energy

Energy carriers|

* Radiation
* Enthalpy
* Fuel
* fossil fuel
* Heat
* Latent heat
* Work
* Electricity
* Battery
* Capacitor

Primary energy|

* Fossil fuel
* Coal
* Petroleum
* Natural gas
* Nuclear fuel
* Natural uranium
* Radiant energy
* Solar
* Wind
* Hydropower
* Marine energy
* Geothermal
* Bioenergy
* Gravitational energy

Energy system
components|

* Energy engineering
* Oil refinery
* Electric power
* Fossil fuel power station
* Cogeneration
* Integrated gasification combined cycle
* Nuclear power
* Nuclear power plant
* Radioisotope thermoelectric generator
* Solar power
* Photovoltaic system
* Concentrated solar power
* Solar thermal energy
* Solar power tower
* Solar furnace
* Wind power
* Wind farm
* Airborne wind energy
* Hydropower
* Hydroelectricity
* Wave farm
* Tidal power
* Geothermal power
* Biomass

Use and
supply|

* Energy consumption
* Energy storage
* World energy consumption
* Energy security
* Energy conservation
* Efficient energy use
* Transport
* Agriculture
* Renewable energy
* Sustainable energy
* Energy policy
* Energy development
* Worldwide energy supply
* South America
* USA
* Mexico
* Canada
* Europe
* Asia
* Africa
* Australia

Misc.|

* Jevons paradox
* Carbon footprint

* Category
* Commons
* Portal
* WikiProject

0.00

(0 votes)

Original source: https://en.wikipedia.org/wiki/Sound energy. Read more

|

Retrieved from "https://handwiki.org/wiki/index.php?title=Physics:Sound_energy&oldid=4109761"
*[v]: View this template
*[t]: Discuss this template
*[e]: Edit this template