EP0198043B1 - Sound pick-up device for musical string instruments - Google Patents

Sound pick-up device for musical string instruments Download PDF

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Publication number
EP0198043B1
EP0198043B1 EP85905319A EP85905319A EP0198043B1 EP 0198043 B1 EP0198043 B1 EP 0198043B1 EP 85905319 A EP85905319 A EP 85905319A EP 85905319 A EP85905319 A EP 85905319A EP 0198043 B1 EP0198043 B1 EP 0198043B1
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EP
European Patent Office
Prior art keywords
sound
instrument
microphones
foam pad
pickup assembly
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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 - Lifetime
Application number
EP85905319A
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German (de)
French (fr)
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EP0198043A1 (en
Inventor
Franz De Byl
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AT85905319T priority Critical patent/ATE53686T1/en
Publication of EP0198043A1 publication Critical patent/EP0198043A1/en
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Publication of EP0198043B1 publication Critical patent/EP0198043B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G10H3/00—Instruments in which the tones are generated by electromechanical means
    • G10H3/12—Instruments in which the tones are generated by electromechanical means using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument
    • G10H3/14—Instruments in which the tones are generated by electromechanical means using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument using mechanically actuated vibrators with pick-up means
    • G10H3/18—Instruments in which the tones are generated by electromechanical means using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument using mechanically actuated vibrators with pick-up means using a string, e.g. electric guitar
    • G10H3/181—Details of pick-up assemblies

Definitions

  • the invention relates to a pickup device with at least two microphones for an acoustic string instrument, in particular for an acoustic guitar.
  • Known pickup devices of this type usually have a holder for the microphones attached to the outer surface of the acoustic guitar.
  • the installation of microphones in the resonance room is also known.
  • a multi-part sound amplifier device having a magnet for picking up vibrations for a string instrument (US Pat. No. 2,680,986), which can be arranged adjustably in the resonance chamber of the string instrument between the top and bottom walls of the resonance body. This sound amplifier device is relatively complicated, and a special tool is always required for its installation.
  • a device is known with at least one microphone for sound absorption from the soundboard of a musical instrument (DE-A 2310066), in which the microphone is arranged in a soft, elastic molded body.
  • the invention is based on the object of designing a pickup device of the type mentioned at the outset from the point of view of cost-saving mass production and universal applicability for almost all types of acoustic stringed instruments, in particular for all types of acoustic guitars, in such a way that it effects damping by which the frequency response is linearized becomes.
  • the pickup device should be easy and quick to use.
  • a guide channel for the microphones and their leads having foam cushion piece which, due to its spring-back characteristic, can be fitted into the sound hole of the instrument in such a way that it sits firmly between the edge of the sound hole and the bottom surface of the instrument and one with the outer Surface of the resonance body of the instrument has a substantially form-fitting end face, the microphones being arranged in the foam pad so that the surface of each microphone head in the resonance body of the instrument is freely accessible to the sound waves.
  • Fig. 1 shows a top view of an acoustic guitar 1, in the sound hole 2, a foam pad 3 is clamped, as particularly the view of the section shown in Fig. 2 along the line 2-2 in Fig. 1 illustrates.
  • the outwardly directed end face 4 of the foam cushion piece 3 is essentially form-fitting with the outer surface 5 of the resonance body 6 of the guitar 1 and extends in its tampon-like clamped state over the entire depth of the resonance body 6 to its bottom surface 7 the sound hole 2 fitted foam cushion piece 3 sits due to its springback property firmly between the edge of the sound hole 2 and the bottom surface 7 and is from the short lower edge 8 of the end part 9 of the fingerboard 10 of the guitar 1, which can extend slightly over the sound hole 2, against secured a distance.
  • the feed line 11 bifurcates at the lower end of the guide channel 14 into two separate feed lines 23 and 24, each run through one of the larger guide channels 15 and 16 and are connected to the corresponding microphone 9 and 20.
  • a piece of felt (not shown) can be placed in the state in which it is fitted in the sound hole 2 in order to achieve a completely flat finish with the ceiling 27 of the resonance body 6 of the guitar 1.

Abstract

A sound pick-up device for musical string instruments comprises a polyethylene foam piece (3) which is adjusted to the sound hole (2) of the instrument and which is provided with guiding channels for microphones (19, 20) and with supply leads (11). The microphones (19, 20) are arranged in the foam part (3) so that the surface of each microphone is accessible to sound waves of the resonant cavity of the instrument without meeting with obstacles. Such a sound pick-up device may be fabricated in large series and at reduced costs and may be adapted to all types of guitars and related string instruments.

Description

Die Erfindung betrifft eine Tonabnehmervorrichtung mit mindestens zwei Mikrofonen für ein akustisches Saiteninstrument, insbesondere für eine akustische Gitarre. Bekannte derartige Tonabnehmervorrichtungen weisen für gewöhnlich eine auf der Außenoberfläche der akustischen Gitarre angebrachte Halterung für die Mikrofone auf. Der Einbau von Mikrofonen in den Resonanzraum ist ebenfalls bekannt. Bekannt ist weiterhin eine mehrteilige, einen Magneten zum Aufnehmen von Schwingungen aufweisende Tonverstärkervorrichtung für ein Saiteninstrument (US-PS 2680986), die im Resonanzraum des Saiteninstrumentes zwischen der Deck- und Bodenwand des Resonanzkörpers verstellbar angeordnet werden kann. Diese Tonverstärkervorrichtung ist verhältnismäßig kompliziert aufgebaut, und zu ihrem Einbau ist stets ein spezielles Werkzeug erforderlich.The invention relates to a pickup device with at least two microphones for an acoustic string instrument, in particular for an acoustic guitar. Known pickup devices of this type usually have a holder for the microphones attached to the outer surface of the acoustic guitar. The installation of microphones in the resonance room is also known. Also known is a multi-part sound amplifier device having a magnet for picking up vibrations for a string instrument (US Pat. No. 2,680,986), which can be arranged adjustably in the resonance chamber of the string instrument between the top and bottom walls of the resonance body. This sound amplifier device is relatively complicated, and a special tool is always required for its installation.

Bekannt ist schließlich eine Vorrichtung mit wenigstens einem Mikrofon zur Schallabnahme vom Resonanzboden eines Musikinstrumentes (DE-A 2310066), bei der das Mikrofon in einem weichelastischen Formkörper angeordnet ist.Finally, a device is known with at least one microphone for sound absorption from the soundboard of a musical instrument (DE-A 2310066), in which the microphone is arranged in a soft, elastic molded body.

Bei der Tonabnahme ist es von Wichtigkeit, eine Dämpfung im tiefen mittleren Frequenzbereich zu erreichen, da ohne eine Dämpfung die Eigenresonanz des Instruments größer als 30 dB sein kann. Auch hochempfindliche Mikrofone, die ohnehin sehr teuer sind, bringen hier für den Musiker keine befriedigende Lösung. Akustische Gitarren, deren Eigenresonanz im tiefen mittleren Frequenzbereich (ca. 150-300 Hz) liegt, sind in den unterschiedlichsten Qualitätsausführungen auf dem Markt.When picking up the sound, it is important to achieve attenuation in the low middle frequency range, since without attenuation the natural resonance of the instrument can be greater than 30 dB. Even highly sensitive microphones, which are very expensive anyway, do not bring a satisfactory solution for the musician. Acoustic guitars, the natural resonance of which lies in the low middle frequency range (approx. 150-300 Hz), are available in various quality versions on the market.

Der Erfindung liegt nun die Aufgabe zugrunde, eine Tonabnehmervorrichtung der eingangs erwähnten Art unter den Gesichtspunkten kostensparender Massenproduktion sowie universeller Einsetzbarkeit für nahezu sämtliche Typen akustischer Saiteninstrumente, insbesondere für sämtliche Typen akustischer Gitarren derart zu gestalten, daß sie eine Dämpfung bewirkt, durch die das Frequenzverhalten linearisiert wird. Außerdem soll die Tonabnehmervorrichtung einfach und schnell handhabbar sein.The invention is based on the object of designing a pickup device of the type mentioned at the outset from the point of view of cost-saving mass production and universal applicability for almost all types of acoustic stringed instruments, in particular for all types of acoustic guitars, in such a way that it effects damping by which the frequency response is linearized becomes. In addition, the pickup device should be easy and quick to use.

Diese Aufgabe wird erfindungsgemäß gelöst durch ein Führungskanäle für die Mikrofone und deren Zuleitungen aufweisendes Schaumpolsterstück, das aufgrund seiner Rückfedereigenschaft in das Schalloch des Instruments derart klemmend einpaßbar ist, daß es fest zwischen dem Rand des Schallochs und der Bodenfläche des Instruments sitzt und eine mit der äußeren Oberfläche des Resonanzkörpers des Instruments im wesentlichen formschlüssige Stirnfläche aufweist, wobei die Mikrofone derart in dem Schaumpolsterstück angeordnet sind, daß die Oberfläche jedes Mikrofonkopfes im Resonanzkörper des Instruments für die Schallwellen ungehindert zugänglich ist. Vorteilhafte Ausgestaltungen der erfindungsgemäßen Tonabnehmervorrichtung ergeben sich aus den Unteransprüchen.This object is achieved according to the invention by a guide channel for the microphones and their leads having foam cushion piece which, due to its spring-back characteristic, can be fitted into the sound hole of the instrument in such a way that it sits firmly between the edge of the sound hole and the bottom surface of the instrument and one with the outer Surface of the resonance body of the instrument has a substantially form-fitting end face, the microphones being arranged in the foam pad so that the surface of each microphone head in the resonance body of the instrument is freely accessible to the sound waves. Advantageous embodiments of the pickup device according to the invention result from the subclaims.

Die erfindungsgemäße Tonabnehmervorrichtung sorgt für eine ausgezeichnete Dämpfung der Eigenresonanz, da das Frequenzverhalten im Bereich der tiefen mittleren Frequenzen durch den Schaumstoff linearisiert wird. Das Schaumpolsterstück kann aus jedem geeigneten Dämpfungsmaterial bestehen. Bevorzugt sind geschäumte Kunststoffe. Das Schaumpolsterstück ist einfach von Hand in das Schalloch des Instrumentes klemmend einsetzbar und gewährleistet eine sichere Führung der Mikrofonzuleitungen sowie eine sichere Haltung der Mikrofone. Die Mikrofone der erfindungsgemäßen Tonabnehmervorrichtung können von einfachster Bauart und einfacher Qualität sein, ohne daß die Linearisierung des Frequenzverhaltens beeinträchtigt wird. Die erfindungsgemäße Tonabnehmervorrichtung ist universell für eine Vielzahl akustischer Saiteninstrumente, insbesondere für alle Typen akustischer Gitarren geeignet einsetzbar und als kostensparender Massenartikel schnell herstellbar. Ein bevorzugtes Ausführungsbeispiel der erfindungsgemäßen Tonabnehmervorrichtung wird nun an Hand der Zeichnungen beschrieben. In diesen sind:

  • Fig. 1 eine Draufsicht auf eine Gitarre mit im Schalloch eingesetzter erfindungsgemäßer Tonabnehmervorrichtung und
  • Fig. 2 eine Ansicht eines Schnitts längs der Linie 2-2 in Fig. 1
The pickup device according to the invention ensures excellent damping of the natural resonance, since the frequency behavior in the region of the low middle frequencies is linearized by the foam. The foam cushion piece can consist of any suitable damping material. Foamed plastics are preferred. The foam pad is easy to insert by hand into the sound hole of the instrument and ensures that the microphone leads are securely guided and the microphones are held securely. The microphones of the pickup device according to the invention can be of the simplest design and simple quality without the linearization of the frequency behavior being impaired. The pickup device according to the invention can be used universally for a large number of acoustic stringed instruments, in particular for all types of acoustic guitars, and can be quickly produced as a cost-saving mass article. A preferred embodiment of the pickup device according to the invention will now be described with reference to the drawings. In these are:
  • Fig. 1 is a plan view of a guitar with the inventive pickup device inserted in the sound hole and
  • FIG. 2 is a view of a section along line 2-2 in FIG. 1

Fig. 1 zeigt in Draufsicht eine akustische Gitarre 1, in deren Schalloch 2 ein Schaumpolsterstück 3 klemmend eingepaßt ist, wie insbesondere die in Fig. 2 gezeigte Ansicht des Schnitts längs der Linie 2-2 in Fig. 1 verdeutlicht. Die nach außen gerichtete Stirnfläche 4 des Schaumpolsterstücks 3 ist dabei im wesentlichen formschlüssig mit der äußeren Oberfläche 5 des Resonanzkörpers 6 der Gitarre 1 und erstreckt sich in seinem tamponmä- ßig eingeklemmten Zustand über die gesamte Tiefe des Resonanzkörpers 6 bis zu dessen Bodenfläche 7. Das in das Schalloch 2 eingepaßte Schaumpolsterstück 3 sitzt aufgrund seiner Rückfedereigenschaft fest zwischen dem Rand des Schallochs 2 und der Bodenfläche 7 und wird von der kurzen Unterkante 8 des Endteils 9 des Griffbrettes 10 der Gitarre 1, der sich geringfügig über das Schalloch 2 erstrecken kann, zusätzlich gegen eine Entfernung gesichert.Fig. 1 shows a top view of an acoustic guitar 1, in the sound hole 2, a foam pad 3 is clamped, as particularly the view of the section shown in Fig. 2 along the line 2-2 in Fig. 1 illustrates. The outwardly directed end face 4 of the foam cushion piece 3 is essentially form-fitting with the outer surface 5 of the resonance body 6 of the guitar 1 and extends in its tampon-like clamped state over the entire depth of the resonance body 6 to its bottom surface 7 the sound hole 2 fitted foam cushion piece 3 sits due to its springback property firmly between the edge of the sound hole 2 and the bottom surface 7 and is from the short lower edge 8 of the end part 9 of the fingerboard 10 of the guitar 1, which can extend slightly over the sound hole 2, against secured a distance.

Eine von außen herangeführte Zuleitung 11 ist seitlich von den über das Griffbrett 10 zum Steg 12 verlaufenden Saiten 13 der Gitarre 1 in einen sich von der Stirnfläche 4 des Schaumpolsterstücks 3 nach unten erstreckenden kurzen Führungskanal 14 geführt, der sich in zwei größere Führungskanäle 15 und 16 aufgabelt, die an gegenüberliegenden Mantelflächen 17 des Schaumpolsterstücks 3 in den Resonanzraum 18 der Gitarre 1 münden und jeweils ein Mikrofon 9 bzw. 20 derart aufnehmen, daß die Oberfläche 21 bzw. 22 jedes Mikrofonkopfes 25 bzw. 26 im Resonanzkörper 6 für die Schallwellen ungehindert zugänglich ist. Die Zuleitung 11 gabelt sich am unteren Ende des Führungskanals 14 in zwei getrennte Zuleitungen 23 und 24, die jeweils durch einen der größeren Führungskanäle 15 bzw. 16 verlaufen und an das entsprechende Mikrofon 9 bzw. 20 angeschlossen sind. Auf der Stirnfläche 4 des Schaumpolsterstücks 3 kann in dessen im Schalloch 2 eingepaßtem Zustand ein nicht dargestelltes Filzstück zur Erzielung eines völlig planen Abschlusses mit der Decke 27 des Resonanzkörpers 6 der Gitarre 1 aufgelegt sein.A supply line 11, which is brought in from the outside, is guided laterally from the strings 13 of the guitar 1 running over the fingerboard 10 to the bridge 12 into a short guide channel 14 which extends downward from the end face 4 of the foam cushion piece 3 and which extends into two larger guide channels 15 and 16 picked up, which open on opposite lateral surfaces 17 of the foam pad 3 in the resonance chamber 18 of the guitar 1 and each receive a microphone 9 or 20 such that the surface 21 or 22 of each microphone head 25 or 26 in the resonance body 6 is freely accessible to the sound waves is. The feed line 11 bifurcates at the lower end of the guide channel 14 into two separate feed lines 23 and 24, each run through one of the larger guide channels 15 and 16 and are connected to the corresponding microphone 9 and 20. On the end face 4 of the foam cushion piece 3, a piece of felt (not shown) can be placed in the state in which it is fitted in the sound hole 2 in order to achieve a completely flat finish with the ceiling 27 of the resonance body 6 of the guitar 1.

Claims (4)

1. A sound pickup assembly comprising at least two microphones for an acoustic string instrument, particularly for an acoustic guitar, characterized by a pad of foam material (3) which has guide openings (14, 15, 16) extending therethrough for the microphones (19, 20) and their connecting leads (11, 23, 24), which on account of its re-expansion property can be squeezed together and pushed through the sound hole (2) of the instrument (1) into the resonator cavity (6), where it then expands and holds itself firm between the edge of the sound hole and the bottom (7) of the instrument (1), the outwardly directed end face of the foam pad element (3) pushing slightly through the sound hole to form an almost even plane (4) with the external top surface (5) of the instrument (1), whereby the microphones (19, 20) are arranged inside the foam pad (3) in a manner such that the sound waves inside the resonator cavity (6) of the instrument (1) may, without hindrance, strike the surface (21 respectively 22) of each microphone head (25 respectively 26).
2. A sound pickup assembly as in claim 1, characterized by foam pad element (3) consisting of a material acting to substantially attenuate frequencies at the lower end of the medium frequency range.
3. A sound pickup assembly as in claim 1 or 2, characterized by foam pad element (3) being cylindrical in shape and having a guide passage (11) extending therethrough along about one half its height and merging at the lower end thereof with a horizontal guide passage having a length corresponding to the diameter of the cylinder.
4. Sound pickup assembly as in any one of claims 1 to 3, characterized in that foam pad element (3) is constructed to additionally accommodate a single-or multichannel sound transmitter and the battery-type power supply required therefor to effect wireless sound transmission.
EP85905319A 1984-10-22 1985-10-21 Sound pick-up device for musical string instruments Expired - Lifetime EP0198043B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85905319T ATE53686T1 (en) 1984-10-22 1985-10-21 PICK-UP DEVICE FOR ACOUSTIC STRINGED INSTRUMENTS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8431266U 1984-10-22
DE19848431266U DE8431266U1 (en) 1984-10-22 1984-10-22 CARTRIDGE DEVICE WITH AT LEAST TWO MICROPHONES FOR ACOUSTIC STRING INSTRUMENTS, ESPECIALLY FOR ACOUSTIC GUITARS

Publications (2)

Publication Number Publication Date
EP0198043A1 EP0198043A1 (en) 1986-10-22
EP0198043B1 true EP0198043B1 (en) 1990-06-13

Family

ID=6772037

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85905319A Expired - Lifetime EP0198043B1 (en) 1984-10-22 1985-10-21 Sound pick-up device for musical string instruments

Country Status (4)

Country Link
US (1) US4748886A (en)
EP (1) EP0198043B1 (en)
DE (2) DE8431266U1 (en)
WO (1) WO1986002765A1 (en)

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DE4336048A1 (en) * 1993-10-22 1995-05-18 Drisch Gerhard Device for sound recording, signal processing and integration of common operating parts and interfaces, with a particularly simple installation option without structural changes or acoustic impairment for acoustic stringed instruments, in particular for acoustic guitars

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US4949619A (en) * 1987-02-08 1990-08-21 Maltzan Wolf U Freiherr Von Sound pickup device for acoustic stringed instruments
DK558687D0 (en) * 1987-10-26 1987-10-26 Helge Wahlgreen PICKUP SYSTEM FOR MUSIC INSTRUMENTS
US4987815A (en) * 1988-07-25 1991-01-29 Gary Shockley Acoustic and electric combination guitar
US5010803A (en) * 1988-11-08 1991-04-30 Donnell Kenneth D Microphone mount
US5438157A (en) * 1993-01-14 1995-08-01 Actodyne General, Inc. Acoustic pick-up assembly for a stringed musical instrument
US5422955A (en) * 1993-07-06 1995-06-06 Dsa Systems Corp. Wireless amplification system for musical instruments
US5438158A (en) * 1994-03-10 1995-08-01 Gibson Guitar Corp. Pickup, including mounting apparatus thereof, for a stringed musical instrument having a soundhole
US5614688A (en) * 1994-12-01 1997-03-25 Donnell; Kenneth D. Transducer system for acoustic instruments
US5883322A (en) * 1995-11-28 1999-03-16 Baker; Michael R. Feedback minimizing device
AT404304B (en) * 1997-02-28 1998-10-27 Schertler Stephan BRIDGE FOR STRINGING THE STRINGS OF A MUSICAL INSTRUMENT
US6441292B1 (en) 1998-10-07 2002-08-27 Kenneth D. Donnell Multiple gooseneck microphones and methods for attachment
US7247789B2 (en) * 2005-01-18 2007-07-24 Fishman Transducers, Inc. Soundhole accessible musical instrument control platform
US7844069B2 (en) * 2007-04-11 2010-11-30 Billy Steven Banks Microphone mounting system for acoustic stringed instruments
US8822805B2 (en) * 2007-05-17 2014-09-02 Eliton, Llc Musical instrument
US7671268B2 (en) * 2007-09-14 2010-03-02 Laurie Victor Nicoll Internally mounted self-contained amplifier and speaker system for acoustic guitar
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US20120312146A1 (en) * 2011-06-11 2012-12-13 Benjamin Randal Bekerman Interface Adapter for Installation of a Standard Magnetic Pickup into an Acoustic Guitar Sound Hole
WO2014022280A1 (en) * 2012-08-03 2014-02-06 The Penn State Research Foundation Microphone array transducer for acoustic musical instrument
US9264524B2 (en) 2012-08-03 2016-02-16 The Penn State Research Foundation Microphone array transducer for acoustic musical instrument
US9646581B2 (en) 2014-12-05 2017-05-09 Stanley Landis Soundhole cover accessories
US10777172B1 (en) 2019-06-04 2020-09-15 Joseph J. Katzenberger Folded horn acoustic guitar
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Publication number Priority date Publication date Assignee Title
DE4336048A1 (en) * 1993-10-22 1995-05-18 Drisch Gerhard Device for sound recording, signal processing and integration of common operating parts and interfaces, with a particularly simple installation option without structural changes or acoustic impairment for acoustic stringed instruments, in particular for acoustic guitars

Also Published As

Publication number Publication date
DE3578243D1 (en) 1990-07-19
EP0198043A1 (en) 1986-10-22
US4748886A (en) 1988-06-07
WO1986002765A1 (en) 1986-05-09
DE8431266U1 (en) 1985-04-11

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