What factors affect the velocity of sound?

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    Sound Velocity
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SUMMARY

The velocity of sound is primarily influenced by the medium's air pressure and density, following the principle that it is proportional to the square root of the ratio of these two factors. At high altitudes, such as 9000 feet, the velocity remains constant as long as the air composition is unchanged. However, increased CO2 levels can affect the tuning of musical instruments. Additionally, sound travels faster in water and solids compared to air due to differences in stiffness and density, with temperature also playing a significant role in sound velocity.

PREREQUISITES
  • Understanding of basic physics principles, particularly wave mechanics.
  • Familiarity with the concepts of air pressure and density.
  • Knowledge of how temperature affects physical properties of gases.
  • Awareness of the differences between sound waves and electromagnetic radiation.
NEXT STEPS
  • Research the mathematical relationship between sound velocity, air pressure, and density.
  • Explore the impact of temperature on sound propagation in different mediums.
  • Investigate the effects of gas composition on sound quality and instrument tuning.
  • Learn about the differences between sound waves and electromagnetic radiation pressure.
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Physics students, audio engineers, musicians, and anyone interested in the principles of sound propagation and its environmental effects.

flame_cmh
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We know that the velocity of sound has relation with the pressure of the medium.
And I'm wondering wether it has relation with the pressure of radiation ?
Thanks!
 
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I recently heard a clarinet solo at an elevation of about 9000 feet, and wondered why the pitch had not changed. The velocity of sound depends on the square root of the ratio of air pressure over air density. Thus the velocity of sound remains constant, even at high altitude, as long as the composition of air remains constant. However, excess
CO2 concentration from an overzeleous musician can detune the instrument. Radiation pressure (electromagnetic radiation) is entirely different, and has no direct relation to the velocity of sound (pressure waves in the medium).
 
SqRt of stiffness/density.
Which is why sound travels faster in water than air, and even faster in solids.
Also highly dependent on temperature.
 

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