Abstract: A neck for a stringed instrument formed of a plywood comprising a lamination of a plurality of sheets of bamboo. A length of bamboo greater than the length of the neck to be produced and having a proper diameter is radially stiffed into equal sectors each having an arcuate section. Both the external and internal surfaces of the sectors are sliced tangentially and the opposite lateral edges of the sectors cut in a direction perpendicular to the tangential direction, thus providing a plurality of sheets of the required length which are rectangular in cross section. Using any known wood lamination technique, the sheets are laminated into a plywood. In a practical embodiment, the plywood is in the form of a straight square timber, the opposite ends of which are cut off, leaving the intermediate portion for use as a neck body.

Abstract: A string vibration transducer bridge for an electric string instrument including a plurality of string tension mechanism provided side by side in the bridge and which are adjustably movable along the direction of the string and includes a plurality of string supporting electrode parts which are slidably movable along the direction of the string and rotatable along a direction perpendicular to the string, a plurality of independent piezoelectric transducers which each engage with an undersurface of an electrode part, and a plurality of piezoelectric transducer pushing mechanisms for pushing the piezoelectric transducers against the electrode parts whereby the tension of the string may be adjusted by both the string tension mechanism and the transducer pushing mechanism and the vibration from each string is independently sensed.