The purpose of this experiment is to find the speed of sound and verify if it is really 340 m/s. Our group planned to find out the speed of sound by measuring the length of sound waves with different frequencies. We expect our results to be around 137 m/s to 343 m/s based on our research from Yavuz, A., 2015. Our approach towards doing this experiment is using a signal generator on smartphones to generate the signals in a water carboy fully filled with water. We expect our results to be 340m/s and the relevance to the world for the experiment we are doing is to verify if the speed of sound is 340m/s.