GB1220800A - Improvements relating to electronic musical instruments - Google Patents

Improvements relating to electronic musical instruments

Info

Publication number
GB1220800A
GB1220800A GB51178/69A GB5117869A GB1220800A GB 1220800 A GB1220800 A GB 1220800A GB 51178/69 A GB51178/69 A GB 51178/69A GB 5117869 A GB5117869 A GB 5117869A GB 1220800 A GB1220800 A GB 1220800A
Authority
GB
United Kingdom
Prior art keywords
switch
vibrato
bus
earth
capacitor
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
GB51178/69A
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.)
Wurlitzer Co
Original Assignee
Wurlitzer Co
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 Wurlitzer Co filed Critical Wurlitzer Co
Publication of GB1220800A publication Critical patent/GB1220800A/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
    • G10H1/043—Continuous modulation
    • 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
    • G10H2210/00—Aspects or methods of musical processing having intrinsic musical character, i.e. involving musical theory or musical parameters or relying on musical knowledge, as applied in electrophonic musical tools or instruments
    • G10H2210/155—Musical effects
    • G10H2210/195—Modulation effects, i.e. smooth non-discontinuous variations over a time interval, e.g. within a note, melody or musical transition, of any sound parameter, e.g. amplitude, pitch, spectral response, playback speed
    • G10H2210/201—Vibrato, i.e. rapid, repetitive and smooth variation of amplitude, pitch or timbre within a note or chord
    • G10H2210/211—Pitch vibrato, i.e. repetitive and smooth variation in pitch, e.g. as obtainable with a whammy bar or tremolo arm on a guitar
    • 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
    • G10H2210/00—Aspects or methods of musical processing having intrinsic musical character, i.e. involving musical theory or musical parameters or relying on musical knowledge, as applied in electrophonic musical tools or instruments
    • G10H2210/155—Musical effects
    • G10H2210/195—Modulation effects, i.e. smooth non-discontinuous variations over a time interval, e.g. within a note, melody or musical transition, of any sound parameter, e.g. amplitude, pitch, spectral response, playback speed
    • G10H2210/221—Glissando, i.e. pitch smoothly sliding from one note to another, e.g. gliss, glide, slide, bend, smear, sweep

Abstract

1,220,800. Electronic musical instruments. WURLITZER CO. 17 Oct., 1969 [15 Nov., 1968], No. 51178/69. Heading G5J. An electronic musical instrument includes a pulsato signal generator and a circuit such that on operation of a switch the pulsato signal is introduced at a rate dependent on a time constant of the circuit to modulate the sound. In an electronic organ (12) glissando and vibrato effects are produced by operation of a switch 22 on the swell pedal (20) by the toe of the organist (Fig. 1, not shown). To produce vibrato, the ON/OFF switch 110 is switched on i.e. the opposite position to that shown. The instrumental vibrato switch 122 is also switched on, opposite to the position shown. A low frequency oscillation produced by an oscillator 36 is passed through a buffer amplifier stage 72. During steady state operation the capacitor 82 is charged from the voltage rail 44, junction 84 being at negative potential, thus cutting off the diode 86. The oscillations pass through the capacitor 88 and resistor 92 to the tone generator vibrato bus 100, producing the vibrato effect. The depth switch 109 controls the amount of oscillation applied to the bus 100, being minimum in the position shown, and maximum in the opposite position. On operation of the toe switch 22 the bus-bar 100 is shorted to earth through contact 146, inhibiting the vibrato. At the same time the junction 84 is brought near earth potential through the ganged contact 142. This brings the diode 86 into its conducting state, thus shorting the oscillations to earth. On releasing the switch 22, as capacitor 82 charges up, the vibrato effect is gradually reinstated, the rate depending on the time constant of the capacitor 82 and diode 86. To produce glissando the instrumental vibrato switch 122 is switched to the position shown. On closing the normally open toe switch 22 the tone generator slide bus 134 is connected to earth through resistor 140, thus de-tuning the generators by a semitone. At the same time the contact 146 closes shorting the tone generator vibrato bus to earth. On releasing the switch the tone generators drift back to their natural frequencies producing the glissando effect.
GB51178/69A 1968-11-15 1969-10-17 Improvements relating to electronic musical instruments Expired GB1220800A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US77623068A 1968-11-15 1968-11-15

Publications (1)

Publication Number Publication Date
GB1220800A true GB1220800A (en) 1971-01-27

Family

ID=25106824

Family Applications (1)

Application Number Title Priority Date Filing Date
GB51178/69A Expired GB1220800A (en) 1968-11-15 1969-10-17 Improvements relating to electronic musical instruments

Country Status (3)

Country Link
US (1) US3590133A (en)
DE (1) DE1957478A1 (en)
GB (1) GB1220800A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3973463A (en) * 1974-03-04 1976-08-10 Hammond Corporation Delayed vibrato and burble circuit
US3854366A (en) * 1974-04-26 1974-12-17 Nippon Musical Instruments Mfg Automatic arpeggio
JPS513736Y1 (en) * 1974-04-30 1976-02-03
US3948139A (en) * 1974-08-28 1976-04-06 Warwick Electronics Inc. Electronic synthesizer with variable/preset voice control
JPS5379523U (en) * 1976-12-06 1978-07-03
US4299153A (en) * 1979-08-10 1981-11-10 The Wurlitzer Company Touch responsive envelope control for electronic musical instrument
US4287804A (en) * 1980-07-09 1981-09-08 Nippon Gakki Seizo Kabushiki Kaisha Electronic musical instrument with timbre selection
US4375178A (en) * 1981-03-20 1983-03-01 Allen Organ Company Dynamic frequency modulation controller for an electronic musical instrument

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2141231A (en) * 1930-03-24 1938-12-27 Trautwein Friedrich Electrical musical instrument
US2455472A (en) * 1945-04-10 1948-12-07 Bell Telephone Labor Inc Method and system for electronically generating complex signals
US2577753A (en) * 1949-08-22 1951-12-11 Hammond Instr Co Electrical musical instrument with tone sustaining means
US2585357A (en) * 1950-12-09 1952-02-12 Baldwin Co Control system for electronic musical instruments
US2697959A (en) * 1951-11-23 1954-12-28 Conn Ltd C G Apparatus for producing complex waves at a desired frequency
US3288907A (en) * 1962-05-07 1966-11-29 Hammond Organ Co Electronic musical instrument with delayed vibrato
US3440325A (en) * 1964-01-27 1969-04-22 Wurlitzer Co Transistorized hartley oscillator tone generator circuit producing glissando and vibrato effects by voltage detuning
FR1443976A (en) * 1965-04-14 1966-07-01 Electronic musical instrument
US3376776A (en) * 1965-06-15 1968-04-09 Hammond Corp Organ portamento system

Also Published As

Publication number Publication date
US3590133A (en) 1971-06-29
DE1957478A1 (en) 1970-06-18

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