Abstract: A resonator including a base; two or more vibration arms connected at ends thereof to a front end of the base and spaced apart from each other across a predetermined space and extending away from the base. Moreover, a connection member connects the vibration arms that bend in the same direction when an electric field is applied. The resonator inhibit occurrence of a spurious mode that otherwise occurs in a resonator that performs out-of-plane bending.

Abstract: The invention is directed toward detection, analyzation and correction of unwanted frequencies. The elimination of the wolf tone may be done through either correction of surface instability or dynamic frequency correction by a signal generator.

Abstract: A self-contained tuning stabilizer for a stringed instrument consists of a body which is attachable to the stringed instrument like a capo, the stabilizer containing mechanical members for increasing or decreasing the tension on each of the strings to keep them in tune as the instrument is played. The device contains sensors for each string, an analyzer for determining if the frequency produced by each string is correct, and a driver for each of the mechanical members for applying micro-tuning corrections to the strings. The device must first be zeroed, and the instrument tuned by hand. Thereafter, the device will maintain the original tuning.

Abstract: The U-shaped base of a U-shaped vibrating element 1 is provided with a transmission rod integrally attached thereto. Further, the transmission rod 2 is attached with a grip portion 3, which in turn is integrally attached with a press member 4 to be pressed against affected areas of patients. Thus constructed, it is possible to provide a tuning fork type therapeutic utensil inexpensive, easy to handle and providing remarkable curing effects not only for the surfaces of the body but also deep and extensively into the body as far as into the osseous tissues.

Abstract: An electric guitar has an electromagnetic resonating unit (3) which is arranged to resonate the strings (2) of the guitar, either individually or together. The resonance of each string is picked up by a pick-up unit (4), and the frequency of resonation of the string is detected and compared with a desired value. A tension adjusting unit (5) adjusts the tension in each string (2) until the frequency of resonance of the string correponds to the desired frequency, in order to tune the guitar to a desired tuning pattern. A control panel (6) on the body (1) of the guitar displays optional tuning patterns which may be selected by a user. Automatic tuning of the guitar may be achieved, without requiring the strings to be plucked manually.

Abstract: An electrostatic measuring apparatus for measuring unknowns such as the electrostatic potential of a surface in a non-contacting manner, including a tuning fork and a sensing electrode, and in which the frequencies of two different vibration modes of the fork are separated by a slotted supporting structure which is united with the fork, and in which harmful amplitudes of vibration of the fork are avoided by an amplitude limiting structure integral with the sensing electrode. The amplitude limiting structure includes arms extending around the ends of the tines.

Abstract: Apparatus, such as a stringed musical instrument, is provided with at least one free-to-vibrate portion tightly coupled to a vibrating object. A member forming the free-to-vibrate is tuned to at least one specific resonant frequency related to the vibrating object. In a guitar the bridge assembly can include the free-to-vibrate portion. The bridge assembly can be a fulcrum tremolo with individual intonation modules each having a free-to-vibrate portion.

Abstract: A base has means for mounting and holding an electronic component, and a plurality of lead-out terminals for establishing electric connection between the electronic component and an external circuit. With the electronic component mounted on the base, an inner casing adapted to cover the electronic component is placed on the base. A tube made of a synthetic resin which will contract when heated is applied to cover the junctions between the base and the inner casing over the entire perimeter of the base. In this condition, the tube is heated to shrink it, so that the junctions are sealed by the tube. Thereafter, an outer casing the bottom of which is fixed on the base as to cover the inner casing and the contracted tube, remaining in intimate contact with the tube.

Abstract: A tuning fork for use in tuning a string instrument, the tuning fork having a groove or notch formed in the free end of its stem to enable it to conveniently ride on a string to be tuned and resist slipping off the string.

Abstract: A method for tuning a fretted string instrument such, for example, as a guitar, by the use of a tuning fork of predetermined pitch by positioning a vibrating tuning fork on the string to be tuned and then adjusting the tension of the string until the vibrating tuning fork causes an audible sympathetic resonance of the string when the tuning fork is at a position where the pitch of the tuning fork and pitch of the string (as determined by the fret scale of the instrument) coincide.