How do sound disperse?

The ideal perfect sound source disperse sound outwards equally over 360º horizontally and vertically (4πSpace) like an enlarging ball.

However real object that creates sound is not round, therefore the sound quality dispersion into all direction is dependent upon the object’s shape and frequency.

Different frequency

Low                        Mid                    High

All kinds of dispersion strength is possible, because there are unlimited number of shapes.

The real sound shape is always round and perfectly spherical. It is the strength that varies in / on the enlarging ball at different directions.

Sound travel outwards, where the distance traveled is governed by time traveled, therefore the sound source is always a perfect sphere.

Unless there is a situation where one side of the "whatever" has speed of sound in air much slower than the other side, else the outward sound shape is a sphere and nothing else.

Very high frequency may be subject to blockage and resort to diffraction traveling technique which nearly always has longer traveling path, therefore may be some what distorted in outward shape.

Still highly dependent upon actual physical shape, size and size/dimension of blockage.



  1. Introduction to Acoustics
  2. What are acoustics?
  3. How is sound created?
  4. What are the definitions of sound?
  5. How do sound travel?
  6. What is wavelength?
  7. Is sound a science?
  8. How do sound disperse?
  9. How long for sound to reach us?
  10. Do sound reflect?
  11. How do sound reflect?
  12. Do room volume affects sound?
  13. Do room shape affects sound?
  14. What is sound absorption?
  15. What is sound proof?
  16. How do sound wave summate or negate?
  17. Why do we need to know all these?



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