With little or no damping, the vibration is in section While using the forcing frequency when the frequency ratio r 1 The pitch of a sound is determined by the frequency of vibration (of your sound producing item). Actually, the pitch of the sound is directly proportional to its frequency. https://rafaelkhauo.onzeblog.com/28727409/top-latest-five-vibration-is-necessary-for-producing-sound-justify-urban-news