How to localize direction / source of sound?


By role of importance: -


1st - Inter-Aural Time Difference (ITD) = which sound that reach first is the source of direction.



2nd - Inter-Aural Intensity Difference (IID) - which sound is louder, fools the ear & brain to perceive as source of direction.



3rd - Head-Diffraction, l, shadow effect.




This is high frequency, little perception to the opposite ear, precedence priority given to the exposed ear as high probability of source of direction.



But at low frequency, where the wavelength = l, is "relatively" large, sufficient to envelope both ears, also normally with equal strength???, therefore making localization difficult. In this case, un-conscious mode engage and relies on higher harmonics to Q the source of direction, including the use of ITD and IID above.

  1. The Human Ears

  2. Disclaimer

  3. Questions

  4. How is sound created?

  5. How do sound travel?

  6. How loud is loud?

  7. How does the ear work?

  8. How does the ear work 2?

  9. Hairlike Nerve Died

  10. How to localize sound?

  11. What do we listen for - to?

  12. How do we listen?

  13. How to differentiate level?

  14. What sound can be heard or not?

  15. Regular music frequencies area

  16. Questions and Answers

  17. Example of sound in Frequency Domain

  18. Example of sound in Time Domain

  19. One prove of human listening in Time Domain

  20. Conclusion

  21. A New Thought

  22. Side notes


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