US2809547A - Intensity control device for electrical musical instrument - Google Patents

Intensity control device for electrical musical instrument Download PDF

Info

Publication number
US2809547A
US2809547A US484777A US48477755A US2809547A US 2809547 A US2809547 A US 2809547A US 484777 A US484777 A US 484777A US 48477755 A US48477755 A US 48477755A US 2809547 A US2809547 A US 2809547A
Authority
US
United States
Prior art keywords
electrode
denoted
electrodes
key
shield
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 - Lifetime
Application number
US484777A
Other languages
English (en)
Inventor
Caine Hugh Le
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.)
National Research Council of Canada
Original Assignee
National Research Council of Canada
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 National Research Council of Canada filed Critical National Research Council of Canada
Priority to US484777A priority Critical patent/US2809547A/en
Priority to GB1030/56A priority patent/GB799312A/en
Priority to FR1145749D priority patent/FR1145749A/fr
Application granted granted Critical
Publication of US2809547A publication Critical patent/US2809547A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • G10H1/0551—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 variable capacitors
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B9/00—Exposure-making shutters; Diaphragms
    • G03B9/08—Shutters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S84/00—Music
    • Y10S84/07—Electric key switch structure

Definitions

  • Variable resistance and variable two-terminal capacitance devices while capable of gradual control of the sound level, have a restricted range of attainable intensity values less than the full range of sound intensity which can be musically appreciated by the human ear. They are also bulky and not convenient for the ganging of several control means on one key, such as is required for couplers.
  • a device for manually controlling the intensity of a musical sound may change the intensity suddenly, or alternatively, it may produce a gradual attack.
  • a simple single contact switch connected in a circuit of the kind referred to will normally produce a sudden onset of sound which is usually not musically desirable.
  • Devices providing gradual attack, of which the present invention is one may be classified according to whether the nature of the attack may or may not be appreciably varied by any practical method of operating the control. If the attack may be varied, the intensitycontrol means may be said to have a player-controlled attack; while if not, the intensit -control means may be said to have a predetermined attack.
  • Devices which have a playercontrolled attack may be further subdivided according to whether the resulting intensity is distance-sensitive or pressure-sensitive.
  • Figure 4 shows the manner -in which a tube such as that denoted by 34 in Figure 1, may be connected directly .to the fixed electrode denoted by 25 in Figure 1;
  • Figure 10 shows a graph relating the travel of the movable electrode denoted by 21 to attenuation.
  • a spring denoted by 19 similar to springs 6-8 is placed coaxially on shaft 14, and spring 19 preferably has two portions, a closely-wound portion of small stiffness (toward the bottom) and a loosely-wound portion (toward the top). After a short compression, the coils of the closely-wound portion touch and the only remaining resiliency is provided by the loosely-wound portion.
  • the loosely-wound portion having few convolutions has comparatively large stiffness.
  • shield 23 Immediately below movable electrode 21 is a box-like shield denoted by 23 having a slot therein denoted by 24. Shield 23 may be mounted on supporting member 9. Inside shield 23 is a fixed electrode denoted by 25, preferably mounted on shield 23 by means of an insulating strip denoted by 26.
  • a given small number of decibels increase in sound intensity is more important for loud sounds, and it is accordingly desirable in the case of a player-controlled device to obtain finer control at the loud end of the range.
  • the sensitivity has a maximum below the upper threshold of audibility. The greater importance per decibel for loud sounds is due to the fact that they then stand out over the background.
  • the movable electrodes may be made progressively shorter or longer, in which case the rate of decrease in attenuation has a gradation from one movable electrode to the next or the key is depressed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • General Physics & Mathematics (AREA)
  • Electrophonic Musical Instruments (AREA)
US484777A 1955-01-28 1955-01-28 Intensity control device for electrical musical instrument Expired - Lifetime US2809547A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US484777A US2809547A (en) 1955-01-28 1955-01-28 Intensity control device for electrical musical instrument
GB1030/56A GB799312A (en) 1955-01-28 1956-01-11 Improvements in or relating to capacitive switches
FR1145749D FR1145749A (fr) 1955-01-28 1956-01-27 Appareil pour la commande de l'amplitude d'une tension électrique et dispositif producteur de son comportant un tel appareil

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US799312XA 1955-01-28 1955-01-28
US1145749XA 1955-01-28 1955-01-28
US484777A US2809547A (en) 1955-01-28 1955-01-28 Intensity control device for electrical musical instrument

Publications (1)

Publication Number Publication Date
US2809547A true US2809547A (en) 1957-10-15

Family

ID=63721169

Family Applications (1)

Application Number Title Priority Date Filing Date
US484777A Expired - Lifetime US2809547A (en) 1955-01-28 1955-01-28 Intensity control device for electrical musical instrument

Country Status (3)

Country Link
US (1) US2809547A (fr)
FR (1) FR1145749A (fr)
GB (1) GB799312A (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3007093A (en) * 1959-03-27 1961-10-31 Rca Corp Variable capacitor
US3231661A (en) * 1961-07-20 1966-01-25 Philips Corp Electronic keyboard instruments
US3321699A (en) * 1963-09-19 1967-05-23 Lab Voor Instr Dalawell N V Device for quadratically converting a linear displacement into an electrical quantity
US4160400A (en) * 1975-09-29 1979-07-10 Marmon Company Touch responsive keying unit for electronic musical instruments
EP2352141A1 (fr) * 2009-12-09 2011-08-03 Roland Corporation Capteur de vitesse pour touche d'instrument de musique électronique
FR3084507A1 (fr) * 2018-07-30 2020-01-31 Arturia Clavier d'instrument de musique electronique a touches sensibles permettant une modulation du son

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1217265B (it) * 1981-11-16 1990-03-22 Intercontinental Electronics S Realizzazione della dinamica di volume negli strumenti musicali a tastiera,con un unico trasduttore per un numero di tasti superiore ad uno

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1738194A (en) * 1929-12-03 Condenser
US2215709A (en) * 1939-03-09 1940-09-24 Miessner Inventions Inc Apparatus for the production of music
US2469168A (en) * 1946-12-17 1949-05-03 Hazeltine Research Inc Loop-antenna tuning system
US2696576A (en) * 1951-07-17 1954-12-07 John A Connor Coaxial capacitor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1738194A (en) * 1929-12-03 Condenser
US2215709A (en) * 1939-03-09 1940-09-24 Miessner Inventions Inc Apparatus for the production of music
US2469168A (en) * 1946-12-17 1949-05-03 Hazeltine Research Inc Loop-antenna tuning system
US2696576A (en) * 1951-07-17 1954-12-07 John A Connor Coaxial capacitor

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3007093A (en) * 1959-03-27 1961-10-31 Rca Corp Variable capacitor
US3231661A (en) * 1961-07-20 1966-01-25 Philips Corp Electronic keyboard instruments
US3321699A (en) * 1963-09-19 1967-05-23 Lab Voor Instr Dalawell N V Device for quadratically converting a linear displacement into an electrical quantity
US4160400A (en) * 1975-09-29 1979-07-10 Marmon Company Touch responsive keying unit for electronic musical instruments
EP2352141A1 (fr) * 2009-12-09 2011-08-03 Roland Corporation Capteur de vitesse pour touche d'instrument de musique électronique
FR3084507A1 (fr) * 2018-07-30 2020-01-31 Arturia Clavier d'instrument de musique electronique a touches sensibles permettant une modulation du son

Also Published As

Publication number Publication date
FR1145749A (fr) 1957-10-29
GB799312A (en) 1958-08-06

Similar Documents

Publication Publication Date Title
US4213367A (en) Monophonic touch sensitive keyboard
US4044642A (en) Touch sensitive polyphonic musical instrument
US4276538A (en) Touch switch keyboard apparatus
GB2078427A (en) Electronic musical instrument
US4430917A (en) Hand-held musical instrument and systems including a man-machine interface apparatus
US4306480A (en) Electronic musical instrument
US3965789A (en) Electronic musical instrument effects control
US2562670A (en) Musical instrument
JPS59206897A (ja) 電気ギタ−の特性音の調整および音調の制御の装置および方法
US2577753A (en) Electrical musical instrument with tone sustaining means
US2959693A (en) Key switching system for electrical musical instruments
US3439568A (en) Percussion type electronic musical instrument
US2809547A (en) Intensity control device for electrical musical instrument
US2357191A (en) Electrical musical instrument
US3657460A (en) Organ keyboard switching system
US2296125A (en) Automatic volume control for keyboard operated musical instruments
US3178501A (en) Controls for electrical string instruments
US3673304A (en) Electronic guitar having plural output channels, one of which simulates an organ
US3769869A (en) Electronic musical instrument keying assembly providing a minimum of electrical noise
US3657459A (en) Musical instrument with variable amplitude
US2811887A (en) Electrical musical instrument
US3681507A (en) Electronic organ voicing control mounted on voice tab
US2297829A (en) Electric piano with pedal control
US3610802A (en) Combination accordion-organ musical instrument
US3119890A (en) Electronic organ obtaining reverberation effects utilizing a light sensitive resistor