US3748367A - Percussive musical instrument with transducer for actuating an electronic tone generator - Google Patents
Percussive musical instrument with transducer for actuating an electronic tone generator Download PDFInfo
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- US3748367A US3748367A US00191488A US3748367DA US3748367A US 3748367 A US3748367 A US 3748367A US 00191488 A US00191488 A US 00191488A US 3748367D A US3748367D A US 3748367DA US 3748367 A US3748367 A US 3748367A
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Classifications
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- 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
- G10H1/0535—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 incorporating a mechanical vibrator, the envelope of the mechanical vibration being used as modulating signal
-
- 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
- G10H2230/00—General physical, ergonomic or hardware implementation of electrophonic musical tools or instruments, e.g. shape or architecture
- G10H2230/045—Special instrument [spint], i.e. mimicking the ergonomy, shape, sound or other characteristic of a specific acoustic musical instrument category
- G10H2230/251—Spint percussion, i.e. mimicking percussion instruments; Electrophonic musical instruments with percussion instrument features; Electrophonic aspects of acoustic percussion instruments or MIDI-like control therefor
- G10H2230/275—Spint drum
-
- 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
- Y10S84/12—Side; rhythm and percussion devices
Definitions
- a microphone is positioned adjacent a playing member capable of being struck with drum sticks, foot-operated beaters, or the like.
- the electric output of the microphone in response to such striking, is rectified and added to the electric potential supplied to an electronic audio tone generator, to activate the latter and produce a desired tone.
- the generated tone is amplified and fed to an audio speaker, headphone, recording instrument, or other audio output device.
- This invention relates to percussive musical instruments, and more particularly to a novel electronic musical instrument of the percussion type.
- Electronic percussion musical instruments provided heretofore utilize switches, closed momentarily by finger-operated keys, to activate electronic tone generators designed to produce desired tones.
- the principal disadvantages of such arrangements are (1) they are incapable of producingvariable tone volume proportional to the pressure applied by the fingers; (2) they are incapable of being operated at speeds suitable for manipulation by drum sticks; and (3) their use therefore is limited to only a few types of percussive instruments.
- the percussive musical instrument of this invention involvesthe use of a transducer to produce an alternating current electric signal in response to the percussive effect of striking a playing member located adjacent the transducer, the electric signal functioningto activate an audio tone generator to produce a-desired tone.
- FIG. 1 is a plan view of a drum showing, in broken lines, the association of an audio frequency transducer.
- FIG. 2 is a sectional view taken on the line 2-2 in FIG. I. I
- FIG. 3 is a schematic diagram of an electric circuit forming a part of the electronic percussive musical instrument of this invention.
- FIGS. 1 and 2 show a drum in somewhat conventional shape, but of considerably different structural arrangement.
- the drum includes a substantially cylindrical side wall closed at its upper end by an end plate 12.
- This end Llt plate is connected to the sidewall by an interveningannular head 14 which projects upward fromthe plate.
- the plate 12 constitutes a playing member, the upper surface of which is adapted to be struck by a playing implement such as drum sticks, foot-operated beaters, the fingers of a player, and the like.
- the plate may be made of any desired material such as wood, metal, synthetic plastic, etc. In the embodiment illustrated it is formed integral with the side wall and bead by the spin casting of aluminum or other desired metal.
- the playing plate is substantially rigid, as distinguished from conventional drum head skins whichmust be made of flexible material capable of being stretched adjustably to provide a desired tone.
- the playingplate may be provided in the form of a flexible membrane, it is not required since the tone is generated electronically, as described hereinafter.
- the playing plate 12 may be utilized per se as the member to be struck by a playing implement. However, itis preferred that the playing surface of the plate'be covered with a resilient material 16 such as natural or synthetic rubber, synthetic plastic, cloth, or other suitable material which enhances the action of drum sticks and provides a softer sound which ;does notinte'rfere with the electronically produced tones described hereinafter.
- a resilient material 16 such as natural or synthetic rubber, synthetic plastic, cloth, or other suitable material which enhances the action of drum sticks and provides a softer sound which ;does notinte'rfere with the electronically produced tones described hereinafter.
- the open bottom end of the cylindrical side wall 10 preferably is closed by "a bottomplate 18 which is secured to the side wall by such means as screws 20.
- a transducer 22 is positioned in contact with or adjacent the playing member 12 appropriately to receivethe percussive pressures resulting from the striking of the playing member and to convert them to electric output signals.
- the transducer may be a conventional microphone, or audio frequency speaker arranged to operate as amicrophone, and it may be secured directly to the playing member 12 on the side opposite the playing surface, as illustrated in FIG. 2, or it may be mounted in spaced relation to the playing member, as desired.
- the transducer maybemounted on the bottom plate 18 in spaced relation to the playing member 12.
- the transducer 22 be a dynamic speaker of rectangular-configuration associated with a round drum, as illustrated in FIG. 1.
- the drum may be of any other desired shape, such as square,rectangular, triangular, oval, etc.
- the playing member may be provided in any form desired.
- it may be formed in the shape of a base drum, arranged to be operated by a foot pedal-operated beater, a tom tom, bongo, bell, cymbal, triangle, or other desired form of instrument.
- drum sticks may strike upon the resilient covering 16 of the playing member to produce appropriate tonal qualities, or upon the metallic bead 14 to produce tones of more staccato characteristics.
- the microphone 22 described hereinbefore may be replaced by various other forms of transducers which function, in response to intermittent percussive pressure applied thereto, to produce alternating current electric signals.
- a piezoelectric crystal may be employed for this purpose to produce electric signals at any desired alternating current frequency in response to the percussive effect of striking a playing member placed in direct contact withor located adjacent to the crystal.
- the electrical output of the transducer is connected to the primary winding of a step-up transformer 24, the secondary winding of which is connected across the input of a full wave rectifier 26.
- One output terminal of the rectifier is connected through a potentiometer 28, battery 30 and control switch 32 to ground.
- the other output terminal of the rectifier is connected through a resistance 34 to a tone generator 36 to provide electrical potential for the latter.
- the tone generator is a conventional twin T oscillator, the frequency of which is determined primarily by the values of the resistors 38 and capacitors 40.
- a potentiometer 42 functions to vary the frequency slightly over a limited range.
- a sensitivity potentiometer 44 functions to adjust the potential from the battery 30 to a level just below activation of the oscillator. Thus, when the playing surface is struck by a playing implement the resulting electric output signal is rectified and added to the battery potential to bring the level up to activation of the oscillator. This level also may be adjusted by the ringing potentiometer 28 which functions to vary the duration of oscillation and hence the tonal quality output from the tone generator. This potentiometer also may be adjusted to effect continuous operation of the oscillator, if a steady output tone is desired.
- the electric output signal from the oscillator 36 is fed through a resistance 48 to the input of a preamplifier assembly 50 which may constitute one or more stages of preamplification.
- the output from this assembly is fed to the input of a power amplifier 52, the output of which is fed to an output audio frequency speaker 54.
- any desired number of tone generators 36 may be included in the system, by parallel connection with the tone generator illustrated in full lines.
- Appropriate switches are associated with the plurality of tone generators for connecting them selectively in the circuit. In this manner a wide variety of tones may be provided by operating on a single playing member 12.
- a plurality of the foregoing systems may be combined into a composite assembly.
- a complete drum assembly of snare, base, tom tom, cymbal and any other desired components may be arranged in conventional playing manner, each provided with a plurality of tone generators.
- a headphone 56 may be connected, either at the output of the preamplifier assembly 50 or at the output of the power amplifier 52, for use by the player during practice sessions.
- the amplified output from the preamplifier assembly or power amplifier may be connected directly to the input of recording apparatus. As previously explained, such an arrangement avoids the problem of feedback distortion which occurs when microphone pickups are required.
- the arrangement illustrated and described hereinbefore offers the additional advantages of providing full dynamic range over any desired frequency range.
- the arrangement is of simplified construction for economical manufacture and requires minimum maintenance.
- the battery supply 30 for the oscillator 36 may be connected directly to the latter, i.e., by connecting the upper end of the ringing potentiometer 28 to the collector of the transistor.
- the arrangement illustrated is preferred, however, since it minimizes the magnitude requirement of the signal from the step-up transformer and accommodates the incorporation of a greater number of tone generators in the system.
- the twin T oscillator illustrated may be replaced by any other conventional form of tone generator, as desired.
- An electronic percussive musical instrument comprising a. a playing member having a playing surface to be struck by a playing implement,
- transducer means located adjacent the playing member and responsive to the percussive effect from the striking of the playing member with a playing implement to produce an electric alternating current output signal
- rectifier means connecting the output of the transducer means to the tone generator for rectifying the alternating current output signal of the transducer means and supplying the rectified signal to the tone generator to activate the latter
- audio amplifier means connected to the output of the tone generator for amplifying the electric audio signal output of the latter.
- the electronic percussive musical instrument of claim 1 wherein the playing member comprises a substantially rigid plate supporting a playing surface of resilient material.
- transducer means is a microphone located on the side of the playing member opposite the striking surface.
- the playing member comprises a substantially rigid plate
- the transducer means is located on the side of the playing member opposite the striking surface
- the source of electric potential is connected in series with said rectifier means
- the source of electric potential includes potential adjusting means for varying the potential of the tone generator to various levels below activation of the generator.
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- Acoustics & Sound (AREA)
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- Electrophonic Musical Instruments (AREA)
Abstract
A microphone is positioned adjacent a playing member capable of being struck with drum sticks, foot-operated beaters, or the like. The electric output of the microphone, in response to such striking, is rectified and added to the electric potential supplied to an electronic audio tone generator, to activate the latter and produce a desired tone. The generated tone is amplified and fed to an audio speaker, headphone, recording instrument, or other audio output device.
Description
United States Patent [191 Lamme et al.
[111 3,748,367 1 July 24, 1973 Filed: Oct. 21, 1971 Appl. No.: 191,488
Related US. Application Data Continuation-impart of Ser. No. 72,688, Sept. 16, 1970, abandoned.
US. Cl 84/].04, 84/l.l2, 84/DIG. 12 Int. Cl. G101! .3/00, GlOh 5/00 Field of Search 84/1.0l, 1.04, 1.12-1.16,
- 84/l.26, DIG. 12
References Cited UNITED STATES PATENTS 9/1969 Borell 84/l.l6
3,429,976 2/1969 Tomcik 84/1.l2 3,538,806 11/1970 Bunger 84/l.l2 3,509,264 4/1970 Green 84ll.l5 3,549,775 12/1970 Kaminsky 84/DIG. 12 3,551,580 12/1970 Glenn et al. 84/DIG. 12 3,553,339 l/l971 Dominguez et al... 84/].15 3,659,032 4/1972 May 84/].04
Primary Examiner-Richard B. Wilkinson Assistant Examiner-Stanley J. Witkowski Attorney0liver D. Olson [5 7 ABSTRACT A microphone is positioned adjacent a playing member capable of being struck with drum sticks, foot-operated beaters, or the like. The electric output of the microphone, in response to such striking, is rectified and added to the electric potential supplied to an electronic audio tone generator, to activate the latter and produce a desired tone. The generated tone is amplified and fed to an audio speaker, headphone, recording instrument, or other audio output device.
8 Claims, 3 Drawing Figures 1 l g l u 1i g V i 1 3 f 38 l I 3.1 J. I 24 ii l f 1a 1 5 I I :r 30 l 3 I 52 e I l I 32 5 1 :1: E 7 l 36 l l 3,4 4, I 54 f' l wa- I. 1, 1 I 3 I f 1 l .18
PATENIED Jlll24l975 Siephen L mm Thomas J. Holce BY INVENTORS ggenf PERCUSSIVE MUSICAL INSTRUMENT WITH TRANSDUCER FOR ACTUATING AN ELECTRONIC TONE GENERATOR CROSS REFERENCE TO RELATED APPLICATION This application is a continuation-impart of earlier filed application, Ser. No. 72,688, filed Sept. 16, 1970 now abandoned.
BACKGROUND OF THE INVENTION This invention relates to percussive musical instruments, and more particularly to a novel electronic musical instrument of the percussion type.
Conventional percussion instruments, such as drums, have certain inherent limitations. For example, they are limited to narrow ranges of tone, as dictated by specific structural materials and range of adjustment. They present serious problems in recording, since required microphone pickup results in feed-back distortions. These limitations are overcome in electronic percussion instruments.
Electronic percussion musical instruments provided heretofore utilize switches, closed momentarily by finger-operated keys, to activate electronic tone generators designed to produce desired tones. The principal disadvantages of such arrangements are (1) they are incapable of producingvariable tone volume proportional to the pressure applied by the fingers; (2) they are incapable of being operated at speeds suitable for manipulation by drum sticks; and (3) their use therefore is limited to only a few types of percussive instruments.
SUMMARY OF THE INVENTION In its basic concept the percussive musical instrument of this invention involvesthe use of a transducer to produce an alternating current electric signal in response to the percussive effect of striking a playing member located adjacent the transducer, the electric signal functioningto activate an audio tone generator to produce a-desired tone. I
It is by virtue of the foregoing basic concept that the principal objective of this invention is achieved; namely, to overcome the aforementioned disadvantages of conventional percussion instruments and prior electronic percussion instruments.
The foregoing and other objects and advantages of this invention will appear from the following detailed description, taken in connection with the accompanying drawing of the preferred embodiment.
BRIEF DESCRIPTION OF THE DRAWING FIG. 1 is a plan view of a drum showing, in broken lines, the association of an audio frequency transducer.
FIG. 2 is a sectional view taken on the line 2-2 in FIG. I. I
FIG. 3 is a schematic diagram of an electric circuit forming a part of the electronic percussive musical instrument of this invention.
DESCRIPTION OF THE PREFERRED EMBODIMENT For purposes merely of illustration, FIGS. 1 and 2 show a drum in somewhat conventional shape, but of considerably different structural arrangement. Thus, the drum includes a substantially cylindrical side wall closed at its upper end by an end plate 12. This end Llt plate is connected to the sidewall by an interveningannular head 14 which projects upward fromthe plate.
The plate 12 constitutes a playing member, the upper surface of which is adapted to be struck by a playing implement such as drum sticks, foot-operated beaters, the fingers of a player, and the like. The plate may be made of any desired material such as wood, metal, synthetic plastic, etc. In the embodiment illustrated it is formed integral with the side wall and bead by the spin casting of aluminum or other desired metal. Thus, the playing plate is substantially rigid, as distinguished from conventional drum head skins whichmust be made of flexible material capable of being stretched adjustably to provide a desired tone. Although the playingplate may be provided in the form of a flexible membrane, it is not required since the tone is generated electronically, as described hereinafter.
The playing plate 12 may be utilized per se as the member to be struck by a playing implement. However, itis preferred that the playing surface of the plate'be covered with a resilient material 16 such as natural or synthetic rubber, synthetic plastic, cloth, or other suitable material which enhances the action of drum sticks and provides a softer sound which ;does notinte'rfere with the electronically produced tones described hereinafter.
The open bottom end of the cylindrical side wall 10 preferably is closed by "a bottomplate 18 which is secured to the side wall by such means as screws 20.
In accordance with the present invention, a transducer 22 is positioned in contact with or adjacent the playing member 12 appropriately to receivethe percussive pressures resulting from the striking of the playing member and to convert them to electric output signals. The transducer may be a conventional microphone, or audio frequency speaker arranged to operate as amicrophone, and it may be secured directly to the playing member 12 on the side opposite the playing surface, as illustrated in FIG. 2, or it may be mounted in spaced relation to the playing member, as desired. For example, the transducer maybemounted on the bottom plate 18 in spaced relation to the playing member 12.
It is preferred that the transducer 22 be a dynamic speaker of rectangular-configuration associated with a round drum, as illustrated in FIG. 1. In this regard it has been found that such an arrangement provides a greater'variation in tone volume by striking the playing member at various locations on its circular surface, relative to the rectangular speaker. However, the drum may be of any other desired shape, such as square,rectangular, triangular, oval, etc.
It will be understood, of course, that the playing member may be provided in any form desired. For example, it may be formed in the shape of a base drum, arranged to be operated by a foot pedal-operated beater, a tom tom, bongo, bell, cymbal, triangle, or other desired form of instrument. In the snare drum arrangement illustrated, drum sticks may strike upon the resilient covering 16 of the playing member to produce appropriate tonal qualities, or upon the metallic bead 14 to produce tones of more staccato characteristics.
It will be further understood that the microphone 22 described hereinbefore may be replaced by various other forms of transducers which function, in response to intermittent percussive pressure applied thereto, to produce alternating current electric signals. For exa'mpie, a piezoelectric crystal may be employed for this purpose to produce electric signals at any desired alternating current frequency in response to the percussive effect of striking a playing member placed in direct contact withor located adjacent to the crystal.
Referring now to FIG. 3 of the drawing, the electrical output of the transducer is connected to the primary winding of a step-up transformer 24, the secondary winding of which is connected across the input of a full wave rectifier 26. One output terminal of the rectifier is connected through a potentiometer 28, battery 30 and control switch 32 to ground. The other output terminal of the rectifier is connected through a resistance 34 to a tone generator 36 to provide electrical potential for the latter. In the embodiment illustrated the tone generator is a conventional twin T oscillator, the frequency of which is determined primarily by the values of the resistors 38 and capacitors 40. A potentiometer 42 functions to vary the frequency slightly over a limited range.
A sensitivity potentiometer 44 functions to adjust the potential from the battery 30 to a level just below activation of the oscillator. Thus, when the playing surface is struck by a playing implement the resulting electric output signal is rectified and added to the battery potential to bring the level up to activation of the oscillator. This level also may be adjusted by the ringing potentiometer 28 which functions to vary the duration of oscillation and hence the tonal quality output from the tone generator. This potentiometer also may be adjusted to effect continuous operation of the oscillator, if a steady output tone is desired.
The electric output signal from the oscillator 36 is fed through a resistance 48 to the input of a preamplifier assembly 50 which may constitute one or more stages of preamplification. The output from this assembly is fed to the input of a power amplifier 52, the output of which is fed to an output audio frequency speaker 54.
As indicated in broken lines in FIG. 3, any desired number of tone generators 36 may be included in the system, by parallel connection with the tone generator illustrated in full lines. Appropriate switches (not shown) are associated with the plurality of tone generators for connecting them selectively in the circuit. In this manner a wide variety of tones may be provided by operating on a single playing member 12.
A plurality of the foregoing systems may be combined into a composite assembly. Thus, for example, a complete drum assembly of snare, base, tom tom, cymbal and any other desired components may be arranged in conventional playing manner, each provided with a plurality of tone generators.
If desired, a headphone 56 may be connected, either at the output of the preamplifier assembly 50 or at the output of the power amplifier 52, for use by the player during practice sessions.
Further, the amplified output from the preamplifier assembly or power amplifier may be connected directly to the input of recording apparatus. As previously explained, such an arrangement avoids the problem of feedback distortion which occurs when microphone pickups are required.
The arrangement illustrated and described hereinbefore offers the additional advantages of providing full dynamic range over any desired frequency range. The arrangement is of simplified construction for economical manufacture and requires minimum maintenance.
It will be apparent to those skilled in the art that various changes in the size, shape, number, type and arrangement of parts hereinbefore may be made. For example, the battery supply 30 for the oscillator 36 may be connected directly to the latter, i.e., by connecting the upper end of the ringing potentiometer 28 to the collector of the transistor. The arrangement illustrated is preferred, however, since it minimizes the magnitude requirement of the signal from the step-up transformer and accommodates the incorporation of a greater number of tone generators in the system. The twin T oscillator illustrated may be replaced by any other conventional form of tone generator, as desired. These and other changes may be made without departing from the spirit of this invention.
Having now described our invention and the manner in which it may be used, we claim:
1. An electronic percussive musical instrument, comprising a. a playing member having a playing surface to be struck by a playing implement,
b. transducer means located adjacent the playing member and responsive to the percussive effect from the striking of the playing member with a playing implement to produce an electric alternating current output signal,
c. an electronic audio tone generator having an electric audio signal output,
d. a source of electric potential for the tone generator,
e. rectifier means connecting the output of the transducer means to the tone generator for rectifying the alternating current output signal of the transducer means and supplying the rectified signal to the tone generator to activate the latter, and
f. audio amplifier means connected to the output of the tone generator for amplifying the electric audio signal output of the latter.
2. The electronic percussive musical instrument of claim 1 wherein the playing member comprises a substantially rigid plate.
3. The electronic percussive musical instrument of claim 1 wherein the playing member comprises a substantially rigid plate supporting a playing surface of resilient material.
4. The electronic percussive musical instrument of claim 1 wherein the transducer means is a microphone located on the side of the playing member opposite the striking surface.
5. The electronic percussive musical instrument of claim 1 wherein the playing member is circular in shape and the transducer means comprises a microphone of rectangular shape.
6. The electronic percussive musical instrument of claim 1 wherein the source of electric potential is connected in series with said rectifier means.
7. The electronic percussive musical instrument of claim 1 wherein the source of electric potential includes potential adjusting means for varying the potential to the tone generator to various levels below activation of the generator. I
8. The electronic percussive musical instrument of claim 1 wherein a. the playing member comprises a substantially rigid plate,
b. the transducer means is located on the side of the playing member opposite the striking surface,
c. the source of electric potential is connected in series with said rectifier means, and
d. the source of electric potential includes potential adjusting means for varying the potential of the tone generator to various levels below activation of the generator.
Claims (8)
1. An electronic percussive musical instrument, comprising a. a playing member having a playing surface to be struck by a playing implement, b. transducer means located adjacent the playing member and responsive to the percussive effect from the striking of the playing member with a playing implement to produce an electric alternating current output signal, c. an electronic audio tone generator having an electric audio signal output, d. a source of electric potential for the tone generator, e. rectifier means connecting the output of the transducer means to the tone generator for rectifying the alternating current output signal of the transducer means and supplying the rectified signal to the tone generator to activate the latter, and f. audio amplifier means connected to the output of the tone generator for amplifying the electric audio signal output of the latter.
2. The electronic percussive musical instrument of claim 1 wherein the playing member comprises a substantially rigid plate.
3. The electronic percussive musical instrument of claim 1 wherein the playing member comprises a substantially rigid plate supporting a playing surface of resilient material.
4. The electronic percussive musical instrument of claim 1 wherein the transducer means is a microphone located on the side of the playing member opposite the striking surface.
5. The electronic percussive musical instrument of claim 1 wherein the playing member is circular in shape and the transducer means comprises a microphone of rectangular shape.
6. The electronic percussive musical instrument of claim 1 wherein the source of electric potential is connected in series with said rectifier means.
7. The electronic percussive musical instrument of claim 1 wherein the source of electric potential includes potential adjusting means for varying the potential to the tone generator to various levels below activation of the generator.
8. The electronic percussive musical instrument of claim 1 wherein a. the playing member comprises a substantially rigid plate, b. the transducer means is located on the side of the playing member opposite the striking surface, c. the source of electric potential is connected in series with said rectifier means, and d. the source of electric potential includes potential adjusting means for varying the potential of the tone generator to various levels below activation of the generator.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US19148871A | 1971-10-21 | 1971-10-21 |
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US3748367A true US3748367A (en) | 1973-07-24 |
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US00191488A Expired - Lifetime US3748367A (en) | 1971-10-21 | 1971-10-21 | Percussive musical instrument with transducer for actuating an electronic tone generator |
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Cited By (28)
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US3878748A (en) * | 1974-03-21 | 1975-04-22 | Larry A Spence | Oral cavity controlled electronic musical instrument |
US3956959A (en) * | 1974-04-30 | 1976-05-18 | Sanyo Silicon Electronics Co., Ltd. | Electronic percussion instrument |
US4342246A (en) * | 1980-06-24 | 1982-08-03 | Cbs Inc. | Multiple voice electric piano and method |
US4732070A (en) * | 1985-10-16 | 1988-03-22 | Nippon, Sakki, Seizo, Kabushiki, Kaisha | Electronic bass drum with integral supports |
US4867028A (en) * | 1984-09-17 | 1989-09-19 | Dynacord Electronic-Und Geratebau Gmbh & Co. | Music synthesizer especially portable drum synthesizer |
DE19625570A1 (en) * | 1996-06-26 | 1998-01-02 | Kurt Meister | Vibration generation device without acoustic sound output, for percussion instrument |
US6121538A (en) * | 1996-07-04 | 2000-09-19 | Roland Corporation | Electronic percussion instrumental system and percussion detecting apparatus therein |
US6271458B1 (en) | 1996-07-04 | 2001-08-07 | Roland Kabushiki Kaisha | Electronic percussion instrumental system and percussion detecting apparatus therein |
US20040083873A1 (en) * | 1996-07-04 | 2004-05-06 | Roland Kabushiki Kaisha | Electronic percussion instrumental system and percussion detecting apparatus therein |
US6794569B2 (en) | 2003-01-14 | 2004-09-21 | Roland Corporation | Acoustic instrument triggering device and method |
US20040211310A1 (en) * | 2003-04-25 | 2004-10-28 | Takashi Hagiwara | Sound pickup device for percussion instrument |
US20050022655A1 (en) * | 2003-07-28 | 2005-02-03 | Wise Johnathan R. | Real drum trigger monitor and amplified tone module |
US20070149254A1 (en) * | 2005-12-28 | 2007-06-28 | Carrero Alfredo R | Method and apparatus for operating a mobile communication device coupled with an external power supply for charging a battery of the mobile communication device |
US7514626B1 (en) * | 2007-12-14 | 2009-04-07 | John Jerome Snyder | Method and apparatus for electrostatic pickup for stringed musical instruments |
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US4342246A (en) * | 1980-06-24 | 1982-08-03 | Cbs Inc. | Multiple voice electric piano and method |
US4867028A (en) * | 1984-09-17 | 1989-09-19 | Dynacord Electronic-Und Geratebau Gmbh & Co. | Music synthesizer especially portable drum synthesizer |
US4732070A (en) * | 1985-10-16 | 1988-03-22 | Nippon, Sakki, Seizo, Kabushiki, Kaisha | Electronic bass drum with integral supports |
DE19625570C2 (en) * | 1996-06-26 | 1999-08-12 | Kurt Meister | Percussion instrument |
DE19625570A1 (en) * | 1996-06-26 | 1998-01-02 | Kurt Meister | Vibration generation device without acoustic sound output, for percussion instrument |
US20050223880A1 (en) * | 1996-07-04 | 2005-10-13 | Kiyoshi Yoshino | Electronic percussion instrumental system and percussion detecting apparatus therein |
US6121538A (en) * | 1996-07-04 | 2000-09-19 | Roland Corporation | Electronic percussion instrumental system and percussion detecting apparatus therein |
US6271458B1 (en) | 1996-07-04 | 2001-08-07 | Roland Kabushiki Kaisha | Electronic percussion instrumental system and percussion detecting apparatus therein |
US20040083873A1 (en) * | 1996-07-04 | 2004-05-06 | Roland Kabushiki Kaisha | Electronic percussion instrumental system and percussion detecting apparatus therein |
US6756535B1 (en) | 1996-07-04 | 2004-06-29 | Roland Corporation | Electronic percussion instrumental system and percussion detecting apparatus therein |
US7385135B2 (en) | 1996-07-04 | 2008-06-10 | Roland Corporation | Electronic percussion instrumental system and percussion detecting apparatus therein |
US6921857B2 (en) | 1996-07-04 | 2005-07-26 | Roland Corporation | Electronic percussion instrumental system and percussion detecting apparatus therein |
US6794569B2 (en) | 2003-01-14 | 2004-09-21 | Roland Corporation | Acoustic instrument triggering device and method |
US7256342B2 (en) * | 2003-04-25 | 2007-08-14 | Yamaha Corporation | Sound pickup device for percussion instrument |
US20040211310A1 (en) * | 2003-04-25 | 2004-10-28 | Takashi Hagiwara | Sound pickup device for percussion instrument |
US6982376B2 (en) | 2003-07-28 | 2006-01-03 | Wise Johnathan R | Real drum trigger monitor and amplified tone module |
US20050022655A1 (en) * | 2003-07-28 | 2005-02-03 | Wise Johnathan R. | Real drum trigger monitor and amplified tone module |
GB2438795B (en) * | 2005-04-13 | 2010-10-13 | Kieffa Drums Llc | Hybrid electric/acoustic percussion instrument |
US7742753B2 (en) * | 2005-12-28 | 2010-06-22 | Motorola, Inc. | Method and apparatus for operating a mobile communication device coupled with an external power supply for charging a battery of the mobile communication device |
US20070149254A1 (en) * | 2005-12-28 | 2007-06-28 | Carrero Alfredo R | Method and apparatus for operating a mobile communication device coupled with an external power supply for charging a battery of the mobile communication device |
US7989690B1 (en) * | 2007-04-16 | 2011-08-02 | Andrew Scott Lawing | Musical instrument pickup systems |
US7514626B1 (en) * | 2007-12-14 | 2009-04-07 | John Jerome Snyder | Method and apparatus for electrostatic pickup for stringed musical instruments |
US8664507B1 (en) | 2010-09-01 | 2014-03-04 | Andrew Scott Lawing | Musical instrument pickup and methods |
US8872015B2 (en) | 2012-08-27 | 2014-10-28 | Avedis Zildjian Co. | Cymbal transducer using electret accelerometer |
US10762483B2 (en) | 2014-03-04 | 2020-09-01 | Bank Of America Corporation | ATM token cash withdrawal |
US9600817B2 (en) | 2014-03-04 | 2017-03-21 | Bank Of America Corporation | Foreign exchange token |
US9600844B2 (en) | 2014-03-04 | 2017-03-21 | Bank Of America Corporation | Foreign cross-issued token |
WO2015138779A1 (en) * | 2014-03-12 | 2015-09-17 | Avedis Zildjian Co. | Electronic cymbal trigger |
US9754573B2 (en) | 2014-03-12 | 2017-09-05 | Avedis Zildjian Co. | Electronic cymbal trigger |
US9761212B2 (en) | 2015-01-05 | 2017-09-12 | Rare Earth Dynamics, Inc. | Magnetically secured instrument trigger |
US9875732B2 (en) | 2015-01-05 | 2018-01-23 | Stephen Suitor | Handheld electronic musical percussion instrument |
US10096309B2 (en) | 2015-01-05 | 2018-10-09 | Rare Earth Dynamics, Inc. | Magnetically secured instrument trigger |
US10460367B2 (en) | 2016-04-29 | 2019-10-29 | Bank Of America Corporation | System for user authentication based on linking a randomly generated number to the user and a physical item |
US10268635B2 (en) | 2016-06-17 | 2019-04-23 | Bank Of America Corporation | System for data rotation through tokenization |
US11335310B2 (en) | 2018-06-18 | 2022-05-17 | Rare Earth Dynamics, Inc. | Instrument trigger and instrument trigger mounting systems and methods |
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