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● Wave Graphs ●
Amplitude, Distance and Time  

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.

Wavelength λ  m Frequency f  Hz Period T  s Amplitude a   2  Wave velocity ν  m/s

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 × Z Specific acoustic impedance of air at 20°C is Z = 413 N·s/m3 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.

 

What is Amplitude? - Maximum displacement or distance relationship Soundfield Quantities of a Plane Wave − The Amplitudes − Particle displacement Questions to sound waves and the amplitudes Relationship of all acoustic quantities Factor, Ratio, or Gain to a Level Value (Gain Decibels dB) and vice versa Period, cycle duration, periodic time, time to frequency conversion 1 - Acoustic waves or sound waves in air 2 - Radio waves and light waves in a vacuum Calculation of the wavelength of an acoustic wave Calculation of the Speed of Sound in Air and the effective Temperature

 
 

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