Abstract：Till now，the testing method for the elastic wave velocity of rock specimens with ultrasonic waves is basically the travel time testing method. Sometimes，owing to the limitation of specimens or testing conditions，etc.，the measurement for the exact travel time of a wave phase is very difficult. The relationship between elastic wave velocities and wave frequency features of rock specimens will be helpful to resolve this problem. This relationship is revealed，and the testing method for the elastic wave velocity of rock specimens based on the features of wave frequencies is put forward. Then the frequency method of rock specimens wave velocity testing is particularly introduced and the rock specimens¢ wave velocities are separately tested in time-domain and frequency-domain in this paper. The comparison between frequency testing results and time testing results show that the frequency testing method is feasible and practical.
