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A new measurement set-up is presented for the modal analysis of stringed instruments. This set-up uses a lightweight impact hammer for the excitation of the instrument at different surface points. The response signal is captured in the form of a velocity signal by a modified phonograph needle on top of the bridge. The phonograph pickup is sensitive to the horizontal motion perpendicular to the strings. In this way the (response) measurement direction coincides with the actual bowing direction. The measured transfer function therefore contains only modes that are excited by actual bowing. A total of 330 transfer functions for each instrument was measured. The acoustically relevant modes are then analysed. The behaviour of these modes is discussed for the violin, the viola and the cello.

Additional information

Authors: LANGHOFF A, JRC Ispra (IT)
Bibliographic Reference: Paper presented: ISMA '95, Le Normont (FR), July 2-7, 1995
Availability: Available from (1) as Paper EN 39198 ORA
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