CMD 278 Lecture Notes - Lecture 7: Tuning Fork, Frequency Response, Damping Ratio
15 Nov 2016
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Document Summary
Although the tone at the resonant frequency becomes louder, it vibrates for a shorter time: energy from the tuning fork tines is being imparted to the larger tabletop; thus energy is being used up more rapidly. Damping: the rate at which the magnitude of vibration and loudness of the resulting sound decreases: heavy damping: when the sound diminishes rapidly, light damping: when the sound diminishes slowly. When the tuning fork frequency is farther away from that of the table, there is more damping due to greater opposition to the flow of energy, or impedance. As the tube length decreases, natural resonant frequencies of vibration for the tube becomes higher. As tube length increases, natural resonant frequencies of vibration for the tube becomes lower. Cavities and tubes can act as resonators because they are columns of air capable of vibrating at certain frequencies.
