The invention provides a plug for an electronic plucked string instrument having a structure for fixing with a set screw by inserting a cable into a sleeve in a plug side. A biting convex portion biting into an insulated outer sheath while receiving a screwing compression force of a set screw via a cable is formed integrally on an inner peripheral surface of an attachment sleeve in a plug side along a peripheral direction of a sleeve inner peripheral surface. The biting convex portion formed on the inner peripheral surface of the attachment sleeve in the plug bites into the insulated outer sheath of the cable. Thus, a slip displacement against a sleeve inner surface of the cable is inhibited by the biting convex portion and a slack of the set screw can be effectively suppressed even in a case where a stronger tensile force is applied to the cable.

A stringed musical instrument saddle containing a plurality of electrically independent transducers and associated electrical conditioning components where each transducer is located within the saddle such that it is sensitive to the vibratory energy of a corresponding string or course and senses the vibratory energy in both vertical and horizontal modes. The saddle contains at least one multi-conductor connector which connects to a removable multi-conductor cable to convey the transducer signals out of the saddle to external receiving electronics. The saddle is constructed of workable materials such that its top and bottom can be fit to a particular instrument by a technician.

The present invention relates to a string instrument (1; 100) comprising a resonator (2), a handle (3) and a tailpiece (4; 40), wherein the handle (3) and the tailpiece (4; 40) are bound to the resonator (2) for combining at least one string to the instrument, further comprising at least one couple of magnets essentially opposed each other, a first magnet (11; 110) of the at least one couple of magnets bound to the resonator (2) and a second magnet (12; 120) of the at least one couple of magnets arranged at a first distance from the first magnet, so that to apply, between the first magnet (11; 110) and the second magnet (12; 120), a repulsive force or an attractive force, respectively, depending on the opposed polarities, equal or opposite, of the first magnet and the second magnet, wherein the attractive force or the repulsive force is active on the resonator (2).

A power system on an electric guitar may include a cover plate covering a cavity in the electric guitar. A rechargeable power source may be contained within the cavity which may include circuitry. Other instruments or configurations may be used.

A power system on an electric guitar may include a cover plate covering a cavity in the electric guitar. A rechargeable power source may be contained within the cavity which may include circuitry. Other instruments or configurations may be used.

A magnetic pickup is configured for a stringed instrument with at least one string, a neck part, and a body, which has a soundboard. A north and south pole of the magnetic pickup define a magnetic axis. The magnetic axis of the magnetic pickup is oriented substantially parallel to the soundboard or, in the region of the magnetic pickup, an auxiliary magnet having a magnetic axis is arranged, the magnetic axis of the auxiliary magnet is oriented substantially parallel to the soundboard or at a right angle to the magnetic axis of the magnetic pickup.

A musical instrument includes: an acoustic portion that makes sound in response to vibration; an exciter that includes an exciter body and a vibrating portion vibrating with respect to the exciter body, and excites the acoustic portion; and a support portion that is attached to the acoustic portion and supports the exciter body such that the vibration is transmitted from the vibrating portion to the acoustic portion. The support portion supports the exciter body such that the exciter body is elastically displaced with respect to the acoustic portion. A resonance frequency of a vibration system including the exciter body and the support portion is lower than the lowest resonance frequency of the acoustic portion.

Battery powered devices are provided with electrically isolated outputs. One exemplary battery device comprises at least one battery; and control electronics configured to provide a plurality of outputs from one of the at least one battery, wherein the plurality of outputs comprise at least one output that is electrically isolated from at least one other output of the plurality of outputs that each provide power to one or more of a plurality of loads. In another exemplary battery device, the control electronics are configured to provide a plurality of outputs from one of the at least one battery, and further comprises a housing assembly comprising (i) at least two surfaces, wherein the at least two surfaces have a space therebetween configured to house the control electronics and the at least one battery; or (ii) a tubular structure configured to house the control electronics and the at least one battery.

This invention presents a modular circuit using a 3-gang pot to mix and compensate two signals, to produce an output of approximately uniform volume. One gang, Pga, physically simulates a pseudo-sine function, Q(x), where 0≤×≤1 is fractional pot rotation. A second gang, Pgb, physically simulates a pseudo-cosine function, R(x). The circuits using Pga & Pgb multiply the two input signals by the pseudo-functions, so that the length, SQRT(Q.sup.2+R.sup.2), of vector (Q,R) stays near one. The third gang, Pgc, modifies the gain of a summer/compensator op-amp, U3, which adds the two modified signals and compensates for variations in amplitude due to phase cancellations between the two input signals, maintaining an output of near-constant amplitude. A number of embodiments consider 3-gang pots with linear, custom nonlinear and mixed tapers. Any of the three gangs may be replaced by a digital pot, driven by a programmable processor. The functions Q(x) and R(x) are also the basis for full-cycle approximate sine and cosine functions, apsin & apcos, which can be used for forward and reverse spectral transformations to predict the output of such a modular circuit from the inputs as modified by the three gangs. The modules can be cascaded or otherwise combined to add more input signals to the output. The primary application is humbucking pair signals from hum-matched single-coil electric guitar pickups, but there may be applications in other fields.

An interchangeable transducer system for electrical musical instruments, wherein the system embodies one or more transducer cavities formed into the musical instrument, wherein self-contained transducers can slide into and out of each transducer cavity. Thereby the same instrument can generate vastly different tonal qualities depending on the type of self-contained transducers the user interchanges within each transducer cavity.