Patent classifications
G10H2220/541
Electroacoustic transducer
An omnidirectional electroacoustic transducer capable of reproducing a sound with high acoustic quality and sufficient sound volume in a wide frequency band is provided with a small number of components. The electroacoustic transducer includes: two or more electroacoustic transduction units each including an electroacoustic transduction film and an elastic supporter, the electroacoustic transduction film having a polymer composite piezoelectric body in which piezoelectric body particles are dispersed in a viscoelastic matrix formed of a polymer material having viscoelasticity at a normal temperature, and two thin film electrodes laminated on both surfaces of the polymer composite piezoelectric body, and the elastic supporter being disposed to be closely attached to one principal surface of the electroacoustic transduction film so as to cause the electroacoustic transduction film to be bent, in which the two or more electroacoustic transduction units are disposed so that the electroacoustic transduction films face outward and form some or all of faces of a polyhedron.
ELECTRONIC CYMBAL
An electronic cymbal includes: a base body having a through-hole at a center; a pad made of a material with elasticity, the pad including a surface hit by a player with the surface covering a first surface of the base body; and a hitting sensor disposed adjacent to the through-hole on a second surface side of the base body, the hitting sensor being configured to detect the hitting to the pad. The pad includes a cup portion, the cup portion includes a part of the pad bulging into a convex shape and being separated from the first surface, the cup portion forming a void between the cup portion and the first surface by the separation, and the pad further includes a joint, the joint drooping from an inner surface of the cup portion to contact the first surface of the base body.
ELECTROACOUSTIC TRANSDUCTION FILM AND MANUFACTURING METHOD THEREOF, ELECTROACOUSTIC TRANSDUCER, FLEXIBLE DISPLAY, VOCAL CORD MICROPHONE, SENSOR FOR MUSICAL INSTRUMENT
Provided are an electroacoustic transduction film capable of reproducing a sound with a sufficient sound volume at a high conversion efficiency, a manufacturing method thereof, an electroacoustic transducer, a flexible display, a vocal cord microphone, and a sensor for a musical instrument. The electroacoustic transduction film includes: a polymer composite piezoelectric body in which piezoelectric body particles are dispersed in a viscoelastic matrix formed of a polymer material having viscoelasticity at a normal temperature; two thin film electrodes laminated on both surfaces of the polymer composite piezoelectric body; and two protective layers respectively laminated on the two thin film electrodes, in which an intensity ratio .sub.1=(002) plane peak intensity/((002) plane peak intensity+(200) plane peak intensity) between a (002) plane peak intensity and a (200) plane peak intensity derived from the piezoelectric body particles in a case where the polymer composite piezoelectric body is evaluated by an X-ray diffraction method is more than or equal to 0.6 and less than 1.
Pickup for stringed instruments
A pickup for a stringed musical instrument, including at least one magnet and at least one pressure sensitive element arranged in contact with the at least one magnet.