Sound waves are characterized by the generic properties of waves, which are frequency, wavelength, period, amplitude, intensity, speed, and direction (sometimes speed and direction are combined as a velocity vector, or wavelength and direction are combined as a wave vector). Sound waves require a medium to travel through, like air or water. It is composed of longitudinal wave and here we talk of compressions and rarefactions (ie Mechanical Vibrations).
Speed of Sound
The speed of sound stays constant regardless of frequency or wavelength within a specific medium. The speed of sound does however vary depending on the medium it travels through. The speed of sound in air is 340 m/s.
(Audible or Acoustic) Sound
Sound that is detectable by the normal healthy human ear.
Complex Sound waves
Comparison of Sound and Light
|SOUND WAVES||LIGHT WAVES|
|VELOCITY IN AIR||APPROXIMATELY 1,100 FEET PER SECOND||APPROXIMATELY 186,000 MILES PER SECOND|
|FORM||A FORM OF WAVE MOTION||A FORM OF WAVE MOTION|
|TRANSMITTING MEDIUM||ALL SUBSTANCES||EMPTY SPACE AND ALL SUBSTANCES EXCEPT OPAQUE MATERIALS|
|RELATION OF TRANSMITTING MEDIUM VELOCITY TO VELOCITY||THE DENSER THE MEDIUM, THE GREATER THE SPEED||THE DENSER THE MEDIUM, THE SLOWER THE SPEED|
|VARIATIONS IN SENSATIONS PRODUCED||A LOW FREQUENCY CAUSES A LOW NOTE; A HIGH FREQUENCY, A HIGH NOTE||A LOW FREQUENCY CAUSES RED LIGHT; A HIGH FREQUENCY, VIOLET LIGHT|
Sound Waves Simulation
Heres a link thats like an online interactive textbook. Will answer any questions you might have..: http://www.glenbrook.k12.il.us/gbssci/phys/Class/waves/wavestoc.html (dhic014)
A link to Harmonic motion waves, close ended and open ended: Harmonic Motion (Aand065)
A link to the Introduction of Physics of Sound: http://www.podcomplex.com/guide/physics.html (amul050)
here is a link to understanding sound waves. shows how sound goes through different materials. easy to understand. http://www.ndt-ed.org/EducationResources/HighSchool/Sound/speedinmaterials.htm (aiye004)
A link that has very useful notes on waves, eg: dropper effects, different types of wave( light, sound , electro magnetic ) etc.... http://www.school-for-champions.com/science/sound.htm
A link to Longitudinal and Transverse Wave Motion: http://www.kettering.edu/~drussell/Demos/waves/wavemotion.html
Here is a link to help with fundamental frequency and harmonics: http://www.glenbrook.k12.il.us/GBSSCI/PHYS/Class/sound/u11l4d.html