GB1327244A - Coupler system for electronic musical instrument - Google Patents

Coupler system for electronic musical instrument

Info

Publication number
GB1327244A
GB1327244A GB4259570A GB4259570A GB1327244A GB 1327244 A GB1327244 A GB 1327244A GB 4259570 A GB4259570 A GB 4259570A GB 4259570 A GB4259570 A GB 4259570A GB 1327244 A GB1327244 A GB 1327244A
Authority
GB
United Kingdom
Prior art keywords
signal
sampling
tone
signals
square waveform
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
GB4259570A
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of GB1327244A publication Critical patent/GB1327244A/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
    • G10H1/06—Circuits for establishing the harmonic content of tones, or other arrangements for changing the tone colour
    • G10H1/08—Circuits for establishing the harmonic content of tones, or other arrangements for changing the tone colour by combining tones
    • 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
    • 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
    • G10H1/057—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 envelope-forming circuits

Landscapes

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

Abstract

1327244 Electrophonic musical instruments MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 4 Sept 1970 [9 Sept 1969] 42595/70 Heading G5J A coupler system comprises a plurality of sampling means each adapted for sampling an input signal by a square waveform control signal, means for obtaining a plurality of tone signals coupled together by utilizing the sampled signals from said sampling means, and means for varying the duty ratio of the square waveform control signals to vary the degree of sampling of the input signals thereby varying the degree of coupling of the tone signals. The input signals may either be in the form of a tone signal, or a depression responsive signal, produced by the depression of a key. With a tone signal, the square waveform control signal is made to have a frequency greater than that of the tone signal. The input signal e 1 at 1 of the sampling circuit (Fig. 1) and the square waveform control signal e 2 at 2 produce a signal e 3 at 3, which is subsequently integrated by resistor R 2 and capacitor C 1 to produce the sampled signal e 4 at 4. If e 1 is a sinusoidal tone signal, then e 4 has the form shown in Fig. 5; and if e 1 is a depression responsive signal, the output signal at 4 has the form shown in Fig. 13. In the case of a depression responsive signal, the signal is subsequently passed to a gate circuit, which is opened by an amount determined by the degree of sampling of the signal to produce a tone signal corresponding to a particular note. Thus, notes, for example, in octave relation to each other may be coupled, the degree of coupling being independently controlled for each note. Notes produced by different keyboards, for example, on an electronic organ, may also be coupled in this way. The sampled signals may be integrated separately, as shown in Fig. 1, or may alternately be coupled and then all integrated together. The length of the depression responsive signal may be controlled by the time taken to depress a key, as illustrated in Fig. 15 (not shown). The square waveform generator comprises a differential amplifier supplied with saw-tooth waveform, which is subsequently shaped by a Schmitt trigger and an emitter follower to produce a square waveform. The duty ratio may be varied by varying the D.C. voltage supplied to the differential amplifier.
GB4259570A 1969-09-09 1970-09-04 Coupler system for electronic musical instrument Expired GB1327244A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7245369 1969-09-09

Publications (1)

Publication Number Publication Date
GB1327244A true GB1327244A (en) 1973-08-15

Family

ID=13489718

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4259570A Expired GB1327244A (en) 1969-09-09 1970-09-04 Coupler system for electronic musical instrument

Country Status (4)

Country Link
US (1) US3775545A (en)
FR (1) FR2061089A5 (en)
GB (1) GB1327244A (en)
NL (1) NL160666C (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3718871A (en) * 1970-07-29 1973-02-27 Matsushita Electric Ind Co Ltd Phase modulating device
US3825668A (en) * 1972-05-30 1974-07-23 Nippon Musical Instruments Mfg Electronic musical instrument capable of providing a third type of musical tones by operation of two keyboards in addition to the ordinary melody and chord tones
US3937115A (en) * 1974-08-01 1976-02-10 The Wurlitzer Company Electronic piano circuit arrangement
JPS5645332B2 (en) * 1974-11-13 1981-10-26
JPS52118631U (en) * 1976-03-05 1977-09-08
US4205578A (en) * 1978-02-24 1980-06-03 Marmon Company Electronic musical instrument signal generator
US4409877A (en) * 1979-06-11 1983-10-18 Cbs, Inc. Electronic tone generating system
DE3529553A1 (en) * 1985-08-17 1987-02-26 Kuhn Dr & Co TALKING OPERATOR FOR TALK-HEAD OPERATED

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2480137A (en) * 1947-05-09 1949-08-30 Rca Corp System for producing amplitudemodulated pulses
US3007361A (en) * 1956-12-31 1961-11-07 Baldwin Piano Co Multiple vibrato system
US3006228A (en) * 1957-11-14 1961-10-31 White James Paul Circuit for use in musical instruments
US3260785A (en) * 1963-10-17 1966-07-12 William H Krug Vibrato circuit
GB1185888A (en) * 1966-06-30 1970-03-25 Philips Electronic Associated A Method and a Device for Generating a Tone Scale in Musical Instruments
US3532799A (en) * 1967-04-17 1970-10-06 Tokyo Shibaura Electric Co Electronic musical apparatus improved in a musical tone generating circuit
US3510565A (en) * 1967-07-17 1970-05-05 Warwick Electronics Inc Electronic organ with musical notes comprising beat frequencies of a reference generator and note generators utilizing magnetostrictive oscillators
US3602824A (en) * 1968-08-19 1971-08-31 Sanders Associates Inc Frequency changing apparatus and methods
JPS4837084B1 (en) * 1968-10-14 1973-11-09
US3651242A (en) * 1970-06-15 1972-03-21 Columbia Broadcasting Syst Inc Octave jumper for musical instruments
US3637913A (en) * 1970-07-27 1972-01-25 Columbia Broadcasting Syst Inc Tone generator employing asymmetrical wave generator rectangular

Also Published As

Publication number Publication date
NL160666B (en) 1979-06-15
NL160666C (en) 1979-11-15
FR2061089A5 (en) 1971-06-18
DE2044462A1 (en) 1971-04-08
NL7013277A (en) 1971-03-11
US3775545A (en) 1973-11-27
DE2044462B2 (en) 1976-01-22

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years