It is possible for the pitch of the voice to change since gas dynamics ( i.e., Bernoulli effect) is partially responsible for the closing frequency of the vocal folds, but I haven't been able to find any data which demonstrates such a change. The cavity resonances which determine the vocal formants would be raised by the higher sound speed, so the timbre of the voice would be different. Note that if the vibration frequency of the vocal folds does not change, the actual pitch of the voice is not higher. The high speed of sound is responsible for the amusing "Donald Duck" voice which occurs when someone has breathed in helium from a balloon. This is consistent with the general relationship for sound speed in gases since the density of helium is so much less than that of air. The speed of sound in helium at 0☌ is about 972 m/s, compared to 331 m/s in air. Sound speeds in other gasesīreaking the sound barrier with an aircraft It is not dependent upon the sound amplitude, frequency or wavelength.Ĭalculation note: You may enter temperature to calculate sound speed, or enter sound speed to calculate the corresponding temperature.
It is important to note that the sound speed in air is determined by the air itself. This sound speed does not apply to gases other than air, for example the helium from a balloon.
In the mean time, read Design and simulation of four-stroke engines by Gordon P. At 200☌ this relationship gives 453 m/s while the more accurate formula gives 436 m/s. Modeling of the gas dynamics throughout a 4-stroke piston engine. If you measured sound speed in your oven, you would find that this relationship doesn't fit. This calculation is usually accurate enough for dry air, but for great precision one must examine the more general relationship for sound speed in gases.
The speed of sound is m/s = ft/s = mi/hr. The speed of sound in dry air is given approximately byįor temperatures reasonably close to room temperaature, where T C is the celsius temperature,
0 kommentar(er)
