摘要:
A transducer (120) for a stringed musical instrument utilizes a coaxial structure. An electromechanical film tape is disposed about an inner, electrically conductive core (210). An outer conductor (230) is formed about the electromechanical film tape. The electromechanical film tape may be provided as a piezoelectric polymer film (200) or an electret film having a permanent electric charge, and is formed about the inner core by wrapping or braiding. Prior to being disposed about the inner core, the film tape may be polarized through the application of a direct current through the film to substantially align the electrical domains in the film. The transducer (120) is configured for placement underneath the saddle in a bridge of a string musical instrument.
摘要:
A pickup for a stringed musical instrument according to the first aspect of the invention has a core, a piezoelectric transducer element, a contact strip, and an output lead. The core is elongated and multi-faced, and has an electrically conducting face. The piezoelectric transducer element includes a piezoelectric film that has a first surface, and a second surface opposite the first surface. A first electrode covers at least part of the first surface, and a second electrode covers at least part of the second surface. The piezoelectric transducer element covers substantially all of the electrically conducting face of the core, and is attached to the core with its first electrode in contact with the electrically conducting face of the core. The contact strip contacts at least part of the second electrode of the piezoelectric transducer element. The output lead has a first conductor connected to the electrically conducting face of the core, and a second conductor connected to the contact strip. In a first variation, the piezoelectric transducer element is enlarged and serves not only as a piezoelectric transducer element, but also provides an electrical shield and insulator for the pickup. In a second variation, two thicker piezoelectric transducer elements are stacked on the core to increase the electrical output of the pickup without a reduction in capacity.
摘要:
The piezoelectric transducer saddle (11) of the present invention is a thin, generally rectangular member that is designed to fit into a bridge slot (13) of a musical instrument such as a guitar (14). The piezoelectric element is oriented vertically in the saddle and constitutes a structural member of the saddle. A first embodiment of the saddle (11) comprises a piezoelectric element (22) that forms the saddle itself. Electrical contacts (42, 44) are engaged to the side of the piezoelectric element to produce electrical output. A preferred embodiment of the saddle (110) is a laminated structure wherein the laminated layers (118) are disposed vertically, and a vertical layer (122) composed of a piezoelectric material is generally centrally disposed within the laminated structure. A metallic electrical contact (120, 130) is engaged on each side of the piezoelectric material to receive electrical signals generated by the piezoelectric material.
摘要:
Stringed musical instrument transducer for converting string vibrations into electric signals, which transducer is composed of at least one electromechanical sheet (107, 108) and is capable of converting string vibrations into electric signals and in which transducer at least one of the electrodes required by the electromechanical sheet is disposed on the surface of one or more thin and flexible dielectric materials, said electrodes (109) forming electrically conductive surfaces of the transducer for connecting the transducer to a signal processing device, and which transducer is constructed of a unitary, thin and flexible layered sheet structure and has the same width throughout its length.
摘要:
The piezoelectric transducer saddle (11) of the present invention is a thin, generally rectangular member that is designed to fit into a bridge slot (13) of a musical instrument such as a guitar (14). The piezoelectric element is oriented vertically in the saddle and constitutes a structural member of the saddle. A first embodiment of the saddle (11) comprises a piezoelectric element (22) that forms the saddle itself. Electrical contacts (42, 44) are engaged to the side of the piezoelectric element to produce electrical output. A preferred embodiment of the saddle (110) is a laminated structure wherein the laminated layers (118) are disposed vertically, and a vertical layer (122) composed of a piezoelectric material is generally centrally disposed within the laminated structure. A metallic electrical contact (120, 130) is engaged on each side of the piezoelectric material to receive electrical signals generated by the piezoelectric material.
摘要:
Vibration transducer unit for converting vibrations to electric signals, in which unit there is a transducer part (11) and a signal processing part (14), like a preamplifier part. The transducer part (11) and the signal processing part (14) are integrated to a single structure.
摘要:
Micro d'instrument musical à cordes décrit par le premier aspect de l'invention et possédant une âme, un élément transducteur piézoélectrique, une bande de contact et un conducteur de sortie. L'âme est allongée et comporte des faces multiples, y compris une face conductrice électriquement. L'élément transducteur piézoélectrique comprend une pellicule piézoélectrique possédant une première surface, ainsi qu'une deuxième surface opposée à la première surface. Une première électrode recouvre au moins une partie de la première surface et une deuxième électrode recouvre au moins une partie de la deuxième surface. L'élément tranducteur piézoélectrique recouvre pratiquement la totalité de la face de conduction électrique de l'âme et est fixé à ladite âme au moyen du contact de sa première électrode avec la face conductrice de ladite âme. La bande de contact vient au contact d'au moins une partie de la deuxième électrode de l'élément transducteur piézoélectrique. Le conducteur de sortie est composé d'un premier conducteur relié à la face conductrice de l'âme et d'un deuxième conducteur relié à la bande de contact. D'après une première variante, l'élément transducteur piézoélectrique est agrandi et sert non seulement d'élément transducteur piézoélectrique, mais également de blindage électrique et d'isolant du micro. D'après une deuxième variante, deux éléments transducteurs piézoélectriques plus épais sont empilés sur l'âme, afin d'amplifier la sortie électrique du micro sans diminuer sa capacité.
摘要:
Le microphone comprend une feuille (10) de fluorure de polyvinylidène ou d'autres matériaux polymères piézo-électriques portant une structure d'électrode (12). Le matériau est uniaxial, son axe de matériau piézo-électrique étant aligné avec les cordes de l'instrument de sorte que le microphone est sensible aux vibrations produites par les cordes lorsqu'elles sont pincées, mais insensible à d'autres vibrations telles que celles produites par le joueur maniant l'instrument. Le microphone est enveloppé autour des côtés et de la base du chevalet (14) de l'instrument avant montage de celui-ci dans le sillet. Dans une variante (Fig. 4), le microphone est positionné entre le corps et le sillet de l'instrument.
摘要:
Vibration transducer unit for converting vibrations to electric signals, in which unit there is a transducer part (11) and a signal processing part (14), like a preamplifier part. The transducer part (11) and the signal processing part (14) are integrated to a single structure.