The frequency remains the same with the same piece a different length. However, the sound wave changes. Thus, the different sound you hear. Though each different length of pipe on a wind chime produces a different sound, the frequency remains the same. If you added one of Mikes tuners to the chime, you could change the frequency on each pipe.seymour fish said:JRS, You have lost me, as when I strike a pipe, then cut it in half and strike it again, it rings at higher frequency. Seymour