 By the same method as above, the fundamental frequency is found to be

At 20 °C (68 °F) the speed of sound in air is 343 m/s (1129 ft/s).This speed is temperature dependent and increases at a rate of 0.6 m/s for each degree Celsius increase in temperature (1.1 ft/s for every increase of 1 °F).The velocity of a sound wave at different temperatures