How Does a Mosquito's Wing Flapping Create Sound Waves?

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Discussion Overview

The discussion centers on the production of sound waves by the flapping of mosquito wings, specifically addressing the frequency and period of these sound waves. It involves theoretical considerations and calculations related to sound wave properties.

Discussion Character

  • Technical explanation
  • Mathematical reasoning

Main Points Raised

  • One participant notes that mosquitoes flap their wings at an average rate of 600 flaps per second and poses questions about the frequency and period of the resulting sound waves.
  • Another participant explains that frequency is defined as the number of cycles per second, measured in Hz, and that the period can be calculated as the inverse of frequency.
  • A third participant provides a range for the fundamental frequency of mosquito wing beats, citing variations based on species, sex, age, and temperature, with values ranging from 180 to 800 Hz and mentions sources that report frequencies from 250 to 1000 Hz.
  • A later reply states that the frequency of the buzzing sound is 600 Hz and calculates the period as 1/600 seconds.

Areas of Agreement / Disagreement

Participants present varying values for the frequency of mosquito wing beats, indicating that multiple competing views remain regarding the exact frequency range. The discussion does not reach a consensus on the definitive frequency or period.

Contextual Notes

The discussion highlights the dependence on species and environmental factors for the frequency of mosquito wing beats, as well as the potential for variations in reported values.

dikraduni
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I was wondering that the annoying buzzing sound from a mosquito is produced when it flaps its wongs at an average rate of 600 flaps per second.
a) what is the frequency of the sound waves?
b) what is the period of these sound waves?
 
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Frequency is the number of cycles (flaps) per second. Unit is Hz.
Period is 1/frequency. Unit is s.
 
"All human beings with normal audition detect, the annoying for us, buzz produced by mosquitoes while flying. This sound is the by-product of their wing beat, and its fundamental frequency is in the range between 180 and 800 cycles per second (Hz), varying with species, sex, age and temperature."
http://bugjammer.com/reports/coro/index.htm

"There are variations in the values of the frequency at which mosquitoes beat their wings. Sources show this value ranging from 250 to 1000 Hz."
http://hypertextbook.com/facts/2000/DianaLeung.shtml

For a .wav file you can listen to:
http://www.acoustics.org/press/132nd/3pab10.html
 
Last edited by a moderator:
The frequency is = to the number of vib. per sec. so the f of the buzzing sound is 600 Hz
and the period is 1/f =1/600

Your welcome.
 

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