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Waves may be graphed as a function of time or distance. A single frequency wave will appear as a sine wave (sinusoid) in either case. From the distance graph the wavelength may be determined. From the time graph, the period and the frequency can be obtained. From both together, the wave speed can be determined. Frequency is cycles per second. Source: http://hyperphysics.phy-astr.gsu.edu/hbase/sound/wavplt.html |

Any of the wave parameters below can be changed. When you have finished entering data, click on the quantity you wish to calculate. The quantities will not be forced to be consistent until you click on the desired quantity. |

Physical value | symbol | unit | abbreviation | formula |

period duration |
T = 1 / f |
second |
s |
T = λ / ν |

Frequency |
f = 1 / T |
hertz |
Hz = 1/s |
f = ν / λ |

Wavelength | λ |
meter | m | λ = ν / f |

Wave speed | ν |
meter per second | m/s | ν = λ × f |

Speed of sound | c | meter per second | m/s | c = λ × f |

Amplitude as particle displacement ξ = p / (2 π × Z)Ampliude as sound pressure p = ξ ×2 π × Z = v × ZSpecific acoustic impedance of air at 20°C is Z = 413 N·s/m^{3}Speed of sound of air at 20°C is c = 343 m/s"Distance = velocity × time" is the key to the basic wave relationship. |

The change of audio frequency does not
change the amplitude and vice versa. |

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