GB226253A - Improvements in and relating to method of and means for production of sonorous vibrations - Google Patents

Improvements in and relating to method of and means for production of sonorous vibrations

Info

Publication number
GB226253A
GB226253A GB1832423A GB1832423A GB226253A GB 226253 A GB226253 A GB 226253A GB 1832423 A GB1832423 A GB 1832423A GB 1832423 A GB1832423 A GB 1832423A GB 226253 A GB226253 A GB 226253A
Authority
GB
United Kingdom
Prior art keywords
electromagnet
rotor
electromagnets
rheostat
armature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1832423A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB1832423A priority Critical patent/GB226253A/en
Publication of GB226253A publication Critical patent/GB226253A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10KSOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K9/00Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
    • G10K9/12Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Stringed Musical Instruments (AREA)

Abstract

226,253. Severy, M. L. July 16, 1923. Electrically vibrated instruments; combined with pianofortes.-Sounds of notes of desired pitch and predetermined quality are produced by moving, relatively to an electromagnet in operative connection with a body such as a diaphragm or string &c., an armature having a formation artificially produced and corresponding to the desired sound-waves. The armature may be rotary and its necessary peripheral form may be obtained bv dimensional variations either in a radial direction or parallel to its axis, or both. The armature may be built up of laminµ, respectively producing the fundamental note and one or more partials. A number of electromagnets may be connected to one vibratory element such as a soundboard. The character and intensity of the sounds may be varied bv particular bodily movements of the armature relatively to the electromagnet, and the intensity alone by controlling the current or voltage of the electromagnet circuit. The invention is applicable to organs &c., while other instruments and human voices may be simulated, and defective diaphragms which unduly emphasize certain tones may be compensated for. Fig. 1 shows an artificially shaped rotor 24 rotated in front of an electromagnet 20 which is in circuit with a rheostat 23 and push-button or key 22, and whose core 19 is connected to a diaphragm 16 provided with a horn 18. In a modification in which the rheostat is omitted, the rotor is made up of differently formed laminµ, and an electromotor which drives the rotor also operates means moving the rotor backwards and forwards along its shaft, thus continuously modifying the timbre by bringing different laminae nearest the electromagnet. The laminµ may be set in various angular relations, and the fundamental or any partial may be emphasized by duplicating the corresponding lamina. Fig. 5 shows an example of a form of rotor for producing a violin tone. Fig. 6 shows diagrammatically a synthetic tone-producing means in a musical instrument. The resonators A, B, C produce simultaneous sounds jointly under the control of a rheostat 54 and key, each resonator being also individually under the control of a rheostat 51 and switch 52 so that the proportions of the sounds in the combination mav be varied. A synchronizer 56 may be employed to keep constant the relative speeds of the rotor shafts. Instead of using the rheostat 54, the rotors 49 may be moved bodily towards and away from the electromagnets, or vice versa by means such as described in U.S.A. Specification 1,218,324. The invention may be combined with a pianoforte of the kind in which the dampers are withdrawn from the strings by electromagnets energized on depression of the keys as described in U.S.A. Specification 1,183,245. Closure of the key circuits also energizes electromagnets in front of which rotors are rotated, the cores of the electromagnets being secured to the bridge on the soundboard. The pianoforte strings may be omitted. Fig. 8 shows a group of vibratory elements which may be used in an instrument capable of simulating different instruments. The rotor unit of each electromagnet 20b consists of three laminated rotors 74, 75, 76 which produce different effects and are mounted on a driven shaft 67 which is slidable into any one of three positions being held by one of the pins 71 - - 73. In another construction two rotors may act simultaneously on a twin electromagnet having a core of horseshoe form. The armature may be in the form of an endless belt, or a disc with the wave surface on its side face. The electromagnets may be entirely mounted on the vibrating elements. The invention is described as a modification of the method described in U.S.A. Specification 1,098,983 consisting in opening and closing with note-frequency a circuit containing an electromagnet in proximity to a diaphragm, string or the like; and of the method described in U.S.A. Specification 1.190,332 in which the current in the electromagnet circuit was instead rendered pulsatory by the rotation of a shaped rotor in proximity to a metallic member in the circuit.
GB1832423A 1923-07-16 1923-07-16 Improvements in and relating to method of and means for production of sonorous vibrations Expired GB226253A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1832423A GB226253A (en) 1923-07-16 1923-07-16 Improvements in and relating to method of and means for production of sonorous vibrations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1832423A GB226253A (en) 1923-07-16 1923-07-16 Improvements in and relating to method of and means for production of sonorous vibrations

Publications (1)

Publication Number Publication Date
GB226253A true GB226253A (en) 1924-12-16

Family

ID=10110514

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1832423A Expired GB226253A (en) 1923-07-16 1923-07-16 Improvements in and relating to method of and means for production of sonorous vibrations

Country Status (1)

Country Link
GB (1) GB226253A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SG111006A1 (en) * 1999-06-30 2005-05-30 Canon Kk Method for manufacturing ink jet recording head, ink jet recording head manufactured by such method, and laser working method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SG111006A1 (en) * 1999-06-30 2005-05-30 Canon Kk Method for manufacturing ink jet recording head, ink jet recording head manufactured by such method, and laser working method

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