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GB1479177A - Keyboard device for an electronic piano - Google Patents

Keyboard device for an electronic piano

Info

Publication number
GB1479177A
GB1479177A GB44838/74A GB4483874A GB1479177A GB 1479177 A GB1479177 A GB 1479177A GB 44838/74 A GB44838/74 A GB 44838/74A GB 4483874 A GB4483874 A GB 4483874A GB 1479177 A GB1479177 A GB 1479177A
Authority
GB
United Kingdom
Prior art keywords
key
hammer
keyboard device
sensor
oct
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
GB44838/74A
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.)
Roland Corp
Original Assignee
Roland Corp
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
Priority claimed from JP12112773A external-priority patent/JPS553720B2/ja
Priority claimed from JP49090118A external-priority patent/JPS5117426A/ja
Application filed by Roland Corp filed Critical Roland Corp
Publication of GB1479177A publication Critical patent/GB1479177A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H1/00—Details of electrophonic musical instruments
    • G10H1/02—Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos
    • G10H1/04—Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos by additional modulation
    • G10H1/053—Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos by additional modulation during execution only
    • G10H1/055—Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos by additional modulation during execution only by switches with variable impedance elements
    • G10H1/0556—Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos by additional modulation during execution only by switches with variable impedance elements using piezoelectric means
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10C—PIANOS, HARPSICHORDS, SPINETS OR SIMILAR STRINGED MUSICAL INSTRUMENTS WITH ONE OR MORE KEYBOARDS
    • G10C3/00—Details or accessories
    • G10C3/16—Actions
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H1/00—Details of electrophonic musical instruments
    • G10H1/32—Constructional details
    • G10H1/34—Switch arrangements, e.g. keyboards or mechanical switches specially adapted for electrophonic musical instruments
    • G10H1/344—Structural association with individual keys

Landscapes

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

Abstract

1479177 Keyboard device for an electronic musical instrument ROLAND CORP 16 Oct 1974 [26 Oct 1973 5 Aug 1974] 44838/74 Heading G5J A keyboard device for an electronic piano is designed to respond to variations in touch on the key. A key frame 1, pivoted at 6, carries a hammer 11 which on depression of the key, pivots about a point 10 and hook 13 and is thrown in the direction "b" to strike sensor 27. Mechanical damping pad 28 is released on depression of the key so that the sensor, which may be capacitive, piezo-electric or mechanical, modulates the signal generated for the particular note struck, according to the strength of the blow delivered by hammer 11 (Fig. 8, not shown). In a second embodiment (Fig. 9, not shown). The sensor comprises a lever which is shifted from one contact to another so that the time taken for the switch to occur, as measured by the discharge of a capacitor, is a function of the force with which the key was struck. Whilst the key is depressed, damper switch 25 remains open (due to pressure from tip 26 of pack 12) so discharging a capacitor in an attenuation circuit (Figs. 7, 14, not shown), which has the effect of attenuating the volume of the note played. "Double beats" are prevented by lever 21 which prevents hammer 11 from returning to plate 24 before the key is released. Lateral movements of the key are prevented by baseplate 8.
GB44838/74A 1973-10-26 1974-10-16 Keyboard device for an electronic piano Expired GB1479177A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP12112773A JPS553720B2 (en) 1973-10-26 1973-10-26
JP49090118A JPS5117426A (en) 1974-08-05 1974-08-05

Publications (1)

Publication Number Publication Date
GB1479177A true GB1479177A (en) 1977-07-06

Family

ID=26431624

Family Applications (1)

Application Number Title Priority Date Filing Date
GB44838/74A Expired GB1479177A (en) 1973-10-26 1974-10-16 Keyboard device for an electronic piano

Country Status (5)

Country Link
US (1) US3927594A (en)
DE (1) DE2450855C3 (en)
GB (1) GB1479177A (en)
IT (1) IT1024690B (en)
NL (1) NL7413568A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4129056A (en) * 1976-12-21 1978-12-12 Jensen Richard W Pedal control circuits for electronic piano
US4211141A (en) * 1978-03-17 1980-07-08 Jensen Richard W Pedal control circuits for electronic piano
DE3342558C1 (en) * 1983-11-25 1984-09-13 Matth. Hohner Ag, 7218 Trossingen Arrangement in an electronic keyboard musical instrument
US4562764A (en) * 1984-06-08 1986-01-07 Kurzweil Music Systems, Inc. Electronic musical performance
JP2830101B2 (en) * 1988-12-28 1998-12-02 カシオ計算機株式会社 Keyboard device for electronic keyboard instruments
JP2528588Y2 (en) * 1991-04-24 1997-03-12 株式会社河合楽器製作所 Electronic musical instrument keyboard device
JP3867594B2 (en) * 2002-03-12 2007-01-10 東海ゴム工業株式会社 Vibration damping device performance evaluation apparatus and performance evaluation method
JP3852355B2 (en) * 2002-03-25 2006-11-29 ヤマハ株式会社 Upright keyboard instrument
WO2018090798A1 (en) * 2016-11-17 2018-05-24 Sunland Information Technology Co., Ltd. System and method for recording user performance of keyboard instrument

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US591887A (en) * 1897-10-19 Charles b
US2974555A (en) * 1955-03-18 1961-03-14 Wurlitzer Co Electronic piano
US3248470A (en) * 1963-04-24 1966-04-26 Allen Organ Co Electronic piano having means responsive to the velocity of the action
US3208326A (en) * 1963-07-12 1965-09-28 Wilfrid H Bendall Piano action
US3516321A (en) * 1967-01-19 1970-06-23 Baldwin Co D H Electronic piano
US3514522A (en) * 1967-11-06 1970-05-26 Charles E Mussulman Organ reed pickups with circuitry and lamp-photoresistor arrangement for percussive effects

Also Published As

Publication number Publication date
US3927594A (en) 1975-12-23
DE2450855A1 (en) 1975-05-07
NL7413568A (en) 1975-04-29
DE2450855B2 (en) 1979-08-16
DE2450855C3 (en) 1980-05-08
IT1024690B (en) 1978-07-20

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee