3. Speed
The speed of sound is quoted as 330 meters (1130 Feet) per second at standard room temperature and pressure (STP). The speed of sound can alter considerably due to a number of factors
1. Temperature - For every rise of 1 degree Fahrenheit, the speed of sound will increase by 1.1 feet per second.
2. The density of the medium - This will affect the speed of sound dramatically.
These two factors are worth thinking about when considering the surroundings you may have when working with sound. The following figures show how much the speed changes.
Speed of sound in sea water = 4.900 ft/sec
Speed of sound in wood = 12.500 ft/sec
Speed of sound in steel = 16.600 ft/sec
Speed of sound in plasterboard = 22.300 ft/sec