GB1289028A - - Google Patents

Info

Publication number
GB1289028A
GB1289028A GB1289028DA GB1289028A GB 1289028 A GB1289028 A GB 1289028A GB 1289028D A GB1289028D A GB 1289028DA GB 1289028 A GB1289028 A GB 1289028A
Authority
GB
United Kingdom
Prior art keywords
output
frequency
transistor
dividers
divider
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
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 filed Critical
Publication of GB1289028A publication Critical patent/GB1289028A/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
    • G10H5/00—Instruments in which the tones are generated by means of electronic generators
    • G10H5/10—Instruments in which the tones are generated by means of electronic generators using generation of non-sinusoidal basic tones, e.g. saw-tooth
    • G10H5/12—Instruments in which the tones are generated by means of electronic generators using generation of non-sinusoidal basic tones, e.g. saw-tooth using semiconductor devices as active elements

Landscapes

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

Abstract

1289028 Multiple frequency oscillators T SAKAI 24 Aug 1970 [27 March 1970] 40690/70 Heading H3T [Also in Division G5] A tone oscillator for an electronic musical instrument comprises a master oscillator 1, a plurality of serially connected frequency dividers 2A-5A and a plurality of LC oscillating circuits 2A-5A each connected to one of the dividers and having a resonance fequency corresponding substantially to the output frequency of the associated divider and yielding a first sinusoidal output and a second pulse output at the divider output frequency, which outputs are combined to produce a musical note rich in harmonics. The oscillating circuit comprises a transistor C17, Fig. 2, not shown) biased to a point just below the oscillatory state whereby application of an input signal overcomes said bias and causes the transistor to oscillate producing a sinusoidal output at the collector connected to a tuned circuit and a pulse output at the emitter.
GB1289028D 1970-03-27 1970-08-24 Expired GB1289028A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2619270A JPS5517399B1 (en) 1970-03-27 1970-03-27

Publications (1)

Publication Number Publication Date
GB1289028A true GB1289028A (en) 1972-09-13

Family

ID=12186616

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1289028D Expired GB1289028A (en) 1970-03-27 1970-08-24

Country Status (7)

Country Link
US (1) US3639853A (en)
JP (1) JPS5517399B1 (en)
BE (1) BE755418A (en)
DE (1) DE2046906A1 (en)
GB (1) GB1289028A (en)
NL (1) NL7016530A (en)
ZA (1) ZA71698B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3809787A (en) * 1970-05-30 1974-05-07 Nippon Musical Instruments Mfg Tone generator system
JPS5033157Y2 (en) * 1971-03-06 1975-09-27
US3808347A (en) * 1971-06-01 1974-04-30 Itt Electronic music tone generator with pulse generator and frequency dividers
US4044643A (en) * 1974-01-09 1977-08-30 Chase Willis E Musical instrument circuit providing celeste and vibrato effects
JPS5712303B2 (en) * 1974-05-09 1982-03-10
US3999456A (en) * 1974-06-04 1976-12-28 Matsushita Electric Industrial Co., Ltd. Voice keying system for a voice controlled musical instrument
JPS5330016B2 (en) * 1974-09-30 1978-08-24
US4070943A (en) * 1975-09-05 1978-01-31 Faulkner Alfred H Electronic organ keying system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2777064A (en) * 1953-12-11 1957-01-08 Harris A Robinson Frequency control system

Also Published As

Publication number Publication date
US3639853A (en) 1972-02-01
JPS5517399B1 (en) 1980-05-10
BE755418A (en) 1971-02-01
NL7016530A (en) 1971-09-29
DE2046906A1 (en) 1971-10-07
ZA71698B (en) 1971-10-27

Similar Documents

Publication Publication Date Title
GB1458405A (en) Electronic musical instruments
GB1289028A (en)
SE7504477L (en) MULTICANAL GENERATOR.
SE8604662L (en) FREQUENCY SYNTHISIZATION DEVICE
CH619832GA3 (en)
US3529260A (en) Oscillator with frequency dividers for providing tunable sinusoidal outputs
GB855985A (en) Improvements in or relating to transistor oscillation generators
US3629727A (en) Circuit for sustaining oscillation of a resonator by a frequency above the natural frequency of said resonator
GB1438126A (en) Oscillator unit and method of digital adjustment of output frequency thereof
GB983657A (en) Improvements in or relating to variable frequency oscillators
US3278862A (en) Crystal controlled synchronized oscillator
GB1094149A (en) Improvements in or relating to signal generation
GB1026654A (en) Signal generator
GB1185888A (en) A Method and a Device for Generating a Tone Scale in Musical Instruments
US3688212A (en) Frequency synthesis system
GB1284377A (en) Device for generating a plurality of sinusoidal oscillations in a carrier telephony system
SE333585B (en)
US2680198A (en) Frequency divider
US3854367A (en) Dual vibrato system
US3651336A (en) Frequency-dividing circuit for signals of sawtooth waveform
US3760290A (en) Crystal controlled variable frequency oscillator
DE3870049D1 (en) OSCILLATOR DEVICE FOR GENERATING AT LEAST TWO DIFFERENT FREQUENCIES.
GB1106456A (en) Improvements relating to frequency synthesis
KR940012090A (en) Clock divider
SU472365A1 (en) Device for obtaining a scale of sounds of an electromusical instrument

Legal Events

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