A device is provided for capturing vibrations produced by an object such as a musical instrument such as a drum head of a drum kit. The device comprises a detectable element, such as a ferromagnetic element, such as a metal shim and a sensor spaced apart from and located relative to the musical instrument. The detectable element is located between the sensor and the musical instrument. When the musical instrument vibrates, the sensor remains stationary and the detectable element is vibrated relative to the sensor by the musical instrument.

A sensor unit capable of protecting a piezoelectric element and detecting vibration and sound is provided. The sensor unit comprises a sheet-like piezoelectric element having a porous layer, and a sound propagation sheet covering at least one face of the piezoelectric element and permitting transmission of sound from a first face toward a second face of the sound propagation sheet. A difference in acoustic pressure level between the sound incident on the sound propagation sheet and the transmitted sound is preferably no greater than 10 dB. A surface density of the sound propagation sheet is preferably from 0.03 g/m.sup.2 to 100 g/m.sup.2. The sound propagation sheet is preferably flexible and preferably has voids. The sensor unit preferably further comprises a sound insulation sheet covering another face of the piezoelectric element and substantially preventing transmission of sound from a second face toward a first face of the sound insulation sheet.

A sensor unit capable of protecting a piezoelectric element and detecting vibration and sound is provided. The sensor unit comprises a sheet-like piezoelectric element having a porous layer, and a sound propagation sheet covering at least one face of the piezoelectric element and permitting transmission of sound from a first face toward a second face of the sound propagation sheet. A difference in acoustic pressure level between the sound incident on the sound propagation sheet and the transmitted sound is preferably no greater than 10 dB. A surface density of the sound propagation sheet is preferably from 0.03 g/m.sup.2 to 100 g/m.sup.2. The sound propagation sheet is preferably flexible and preferably has voids. The sensor unit preferably further comprises a sound insulation sheet covering another face of the piezoelectric element and substantially preventing transmission of sound from a second face toward a first face of the sound insulation sheet.

A sound apparatus includes a piezoelectric device, a vibration member connected to the piezoelectric device, a first magnet connected to the piezoelectric device, and a second magnet facing the first magnet, which can readily realize a desired frequency characteristic.

An electronic device according to an embodiment of the present disclosure includes at least one memory configured to store executable instructions, and a processor configured to execute the executable instructions stored in the at least one memory to cause the electronic device to acquire a first sound signal from an external source, generate a musical sound signal according to a performance operation, output the first sound signal and the musical sound signal to a first output destination, and output the musical sound signal to a second output destination different from the first output destination.

A connector device for electronic musical instruments. The connector device comprising input electrical connector means that receives electrical signals generated by pickup means for an instrument. The instrument being played and a vibration transducer mechanically attached to the input electrical connector means or provided as an integral part of the input electrical connector means, such that vibrations from the instrument are transferred to the vibration transducer. The vibration transducer generates an electrical output signal based on the vibrations. The connector device comprises electrical output connector means that receives the electrical signals generated by the pickup means and the electrical output signal from the vibration transducer and provides these signals to equipment. The connector device further comprises a mixer that combines the signals v.sub.g(t) from the pickup means and the signal v.sub.vib(t) from the vibration transducer. The mixer provides output signal v.sub.o(t) that is a weighted combination of the input signals.

A connector device for electronic musical instruments. The connector device comprising input electrical connector means that receives electrical signals generated by pickup means for an instrument. The instrument being played and a vibration transducer mechanically attached to the input electrical connector means or provided as an integral part of the input electrical connector means, such that vibrations from the instrument are transferred to the vibration transducer. The vibration transducer generates an electrical output signal based on the vibrations. The connector device comprises electrical output connector means that receives the electrical signals generated by the pickup means and the electrical output signal from the vibration transducer and provides these signals to equipment. The connector device further comprises a mixer that combines the signals v.sub.g(t) from the pickup means and the signal v.sub.vib(t) from the vibration transducer. The mixer provides output signal v.sub.o(t) that is a weighted combination of the input signals.

An apparatus, system, and method for a magnetically and releaseably attachable trigger for an instrument is provided. Additionally, the trigger provides for an increased sensitivity of sound by being in direct physical contact with the surface on which it is attached.

The disclosure provides a detection device, a percussion instrument, and a detection method. The percussion instrument includes a head; a base that has at least a portion formed in a curved shape and that is in contact with the head in a direction in which a curvature of the curved shape is changed with a vibration of the head; and a film-shaped piezoelectric sensor disposed on the base.

A percussion instrument motion reproduction device includes a percussion instrument. The percussion instrument includes a vibration portion. The percussion instrument motion reproduction device includes a first driving portion. The first driving portion of the percussion instrument motion reproduction device is configured to visually displace the vibration portion in response to an electrical signal.