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No. Higher frequency waves simply have a shorter wavelength (that is, the distance from one crest to the next). Lower frequency waves have a longer wavelength. The waves themselves propagate at the same speed (roughly) depending on the medium. For example, sound travels faster in metal or water than it does in air. A good illustration of this would be a line of cars. If each wave crest is a car, a high frequency wave would be one where the cars are each 20 feet apart. A low frequency wave would be one where the cars are 200 feet apart. Both "waves" can be travelling at the same speed (say, 30 miles per hour) HOWEVER! IF the listener is traveling faster RELATIVE to the source of the sound, then the frequency will appear higher. This is called the Doppler Effect. Simply put, if I were stationary next to that line of cars in the previous example, they would pass by at some rate per minute. If I were travelling at 30 mph in the opposite direction along side the line of cars, they would pass by be at TWICE that rate per minute, thus their FREQUENCY would appear to be much higher. But again, the cars (that is the sound waves) individually have not changed speed.

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