Investigations of the Acoustics of the Mandolin
We continue a broad-based experimental study of the acoustics of the mandolin. We will further investigate the complex coupling of the motions of the doubled strings using high-speed video and the musical implications of these interactions will be elucidated. Measurements of the sound spectrum and bridge impedance combine to characterize the transfer of mechanical energy from string motions through the bridge to the motions of the instrument body that ultimately produce sound. Experiments to understand in detail the connection between the mechanical properties of the bridge and the resulting sound spectrum aim to identify potential improvements in bridge design. Details of the resulting body motions, the modes of vibration, will be studied using holographic interferometry.