GB308988A - Improvements in electrical musical instruments - Google Patents
Improvements in electrical musical instrumentsInfo
- Publication number
- GB308988A GB308988A GB10272/29A GB1027229A GB308988A GB 308988 A GB308988 A GB 308988A GB 10272/29 A GB10272/29 A GB 10272/29A GB 1027229 A GB1027229 A GB 1027229A GB 308988 A GB308988 A GB 308988A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wire
- finger
- variable
- inductance
- frequency
- 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
Links
- 239000004020 conductor Substances 0.000 abstract 3
- 239000002184 metal Substances 0.000 abstract 3
- 229910052751 metal Inorganic materials 0.000 abstract 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract 1
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 239000010949 copper Substances 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 229910002804 graphite Inorganic materials 0.000 abstract 1
- 239000010439 graphite Substances 0.000 abstract 1
- 238000007689 inspection Methods 0.000 abstract 1
- 239000011810 insulating material Substances 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 239000011669 selenium Substances 0.000 abstract 1
- 229910052711 selenium Inorganic materials 0.000 abstract 1
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
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/14—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with electron or nuclear magnetic resonance
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Multimedia (AREA)
- Acoustics & Sound (AREA)
- Power Engineering (AREA)
- High Energy & Nuclear Physics (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- Remote Sensing (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Electrophonic Musical Instruments (AREA)
- Auxiliary Devices For Music (AREA)
Abstract
308,988. Martenot, M. L. E. April 2, 1928, [Convention date]. Electrically-vibrated instruments. - In electrical musical instruments utilizing oscillating currents, the frequency is varied by adjusting variable inductances capacities or resistances provided with movable flexible conductors, the flexible conductors facilitating adjustment of, and forming parts of, the controlling devices. In Fig. 1 the variable inductance comprises a flexible wire or band 1, of preferably decreasing cross-section, attached by a wire 7 to a spring drum 5 and moved relatively to a coil 1<a> by the operator through an insulating finger-piece. 2. An indicator 4 attached to the wire 7 moves over a scale 6 to show the note produced. In Fig. 2 (not shown the variable inductance comprises a wire which may be more or less unwound from the grooves of an insulating spring drum, with or without a fixed coil near or on the drum to form a variometer. Fig. 3 shows a variable condenser comprising a metal cylinder 10 with dielectric 11 of varying thickness on which is wound a wire 12 attached to a finger-piece 13. In Fig. 4 (not shown) the turns of wire are within a metal cylinder. These condensers may be connected by reduction gearing to an ordinary condenser, or to a variable self-inductance, or to a variometer, by which fine adjustments can be obtained. In Fig. 5, a variable condenser comprises a band 16 connected to a finger-piece 20 and by a cord 17 to a spring drum 18a, and another metallic body 19, of wedge shape. The band 16 is formed of fine wire wound on insulating material. Alternatively the ends 16<a>, 17<a> of the band and cord may be joined, (Fig. 6, not shown), and, in lieu of an indicator 22 and scale 23, a finger-ring working over a dummy keyboard may be provided. Or the graduations may be on the cord 17 working past a fixed pointer. A variable resistance comprises an insulating drum coated with a film of graphite on which is wound more or less a metallic wire or band. Fig. 7 shows a finger-piece 36 which is connected to one of the flexible conductors 16 and is provided with small plates 34 of varying sizes and with fixed metallic keys 35. By placing a finger on a key the capacity of that finger is added, giving additional control over the pitch of the sounds. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the following:- A keyboard (or octave thereof) mounted on springs may be vibrated by the operator's hand to vary the frequency or intensity by varying a capacity inductance or resistance, so as to produce a vibrato effect; this forms the subjectmatter of Specification 335,997. Or a vibrato of constant frequency may be produced by a condenser having one plate connected by a spring to the keyboard which is given an initial shake. To vary frequency by varying inductance, a copper plate or a magnet may be moved by hand near an inductance; or by varying resistance, a wire may be variably immersed in a poorly conductive liquid. Scales or dummy keyboards may be applied to instruments in which the hand is moved near an aerial, a pointer moving over the scale reproducing the movements of the hand. A keyboard with fixed metallic keys may be connected through different inductances or resistances. Fixed insulating keys of different thicknesses, or a single key of varying thickness, may rest on a metal wire or plate to vary the frequency according to the point touched. A keyboard for any electric instrument has keys connected to resistances to give different sound intensities according to the extent of depression of a key. Instruments with keyboards and with an aerial co-operating with the hand may be combined. A selenium cell connected in the oscillating circuit either directly or by a relay, may control intensity or frequency. The apparatus may be automatically operated. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR308988X | 1928-04-02 | ||
FR335997X | 1928-04-02 | ||
FR1824402X | 1928-04-02 | ||
FR636985X | 1928-04-02 | ||
FR668807T | 1928-05-19 | ||
DEM113282D DE584127C (en) | 1928-04-02 | 1929-05-02 | Musical instrument with sound generation by electrical means |
Publications (1)
Publication Number | Publication Date |
---|---|
GB308988A true GB308988A (en) | 1930-10-02 |
Family
ID=63721172
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB10272/29A Expired GB308988A (en) | 1928-04-02 | 1929-04-02 | Improvements in electrical musical instruments |
GB28474/30A Expired GB335997A (en) | 1928-04-02 | 1929-04-02 | Improvements in and relating to electrical musical instruments |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB28474/30A Expired GB335997A (en) | 1928-04-02 | 1929-04-02 | Improvements in and relating to electrical musical instruments |
Country Status (4)
Country | Link |
---|---|
US (1) | US1824402A (en) |
DE (2) | DE636985C (en) |
FR (2) | FR668807A (en) |
GB (2) | GB308988A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7435284B2 (en) * | 2005-11-17 | 2008-10-14 | Thermo Electron Corporation | Parallel-plate diffusion gas dehumidifier and methods for use |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1273438A (en) * | 1960-08-31 | 1961-10-13 | Electronic musical instrument | |
US3288909A (en) * | 1960-11-21 | 1966-11-29 | Volodin Andrey Alexandrovich | Keyboard electric musical instrument |
US3912987A (en) * | 1973-10-25 | 1975-10-14 | Simmonds Precision Products | Variable capacitors |
FR2408188A1 (en) * | 1977-11-02 | 1979-06-01 | Allen John | pitch variation in keyboard instruments - involves key designed to allow string tension to be varied by way in which key is actuated |
-
0
- FR FR37066D patent/FR37066E/fr not_active Expired
-
1928
- 1928-04-25 DE DEM104470D patent/DE636985C/en not_active Expired
- 1928-05-19 FR FR668807D patent/FR668807A/en not_active Expired
-
1929
- 1929-03-27 US US350357A patent/US1824402A/en not_active Expired - Lifetime
- 1929-04-02 GB GB10272/29A patent/GB308988A/en not_active Expired
- 1929-04-02 GB GB28474/30A patent/GB335997A/en not_active Expired
- 1929-05-02 DE DEM113282D patent/DE584127C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7435284B2 (en) * | 2005-11-17 | 2008-10-14 | Thermo Electron Corporation | Parallel-plate diffusion gas dehumidifier and methods for use |
Also Published As
Publication number | Publication date |
---|---|
GB335997A (en) | 1930-10-02 |
DE636985C (en) | 1936-10-22 |
FR668807A (en) | 1929-11-07 |
DE584127C (en) | 1933-09-14 |
US1824402A (en) | 1931-09-22 |
FR37066E (en) | 1930-10-15 |
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