EP0107136A2 - Corps vibrants, en particulier corps résonants pour dispositifs de génération du son - Google Patents

Corps vibrants, en particulier corps résonants pour dispositifs de génération du son Download PDF

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Publication number
EP0107136A2
EP0107136A2 EP83110100A EP83110100A EP0107136A2 EP 0107136 A2 EP0107136 A2 EP 0107136A2 EP 83110100 A EP83110100 A EP 83110100A EP 83110100 A EP83110100 A EP 83110100A EP 0107136 A2 EP0107136 A2 EP 0107136A2
Authority
EP
European Patent Office
Prior art keywords
vibrating body
body according
partially
sound
granulate particles
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.)
Granted
Application number
EP83110100A
Other languages
German (de)
English (en)
Other versions
EP0107136B1 (fr
EP0107136A3 (en
Inventor
Georg Ignatius
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT83110100T priority Critical patent/ATE79191T1/de
Publication of EP0107136A2 publication Critical patent/EP0107136A2/fr
Publication of EP0107136A3 publication Critical patent/EP0107136A3/de
Application granted granted Critical
Publication of EP0107136B1 publication Critical patent/EP0107136B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • H04R7/06—Plane diaphragms comprising a plurality of sections or layers
    • H04R7/10—Plane diaphragms comprising a plurality of sections or layers comprising superposed layers in contact
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10D—STRINGED MUSICAL INSTRUMENTS; WIND MUSICAL INSTRUMENTS; ACCORDIONS OR CONCERTINAS; PERCUSSION MUSICAL INSTRUMENTS; AEOLIAN HARPS; SINGING-FLAME MUSICAL INSTRUMENTS; MUSICAL INSTRUMENTS NOT OTHERWISE PROVIDED FOR
    • G10D3/00—Details of, or accessories for, stringed musical instruments, e.g. slide-bars
    • G10D3/02—Resonating means, horns or diaphragms
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K13/00—Cones, diaphragms, or the like, for emitting or receiving sound in general

Definitions

  • the invention relates to a vibrating body, in particular a resonance body, for sound generating devices and devices, such as musical instruments and loudspeakers, with a sound-emitting surface.
  • a vibrating body in particular a resonance body
  • sound generating devices and devices such as musical instruments and loudspeakers
  • These can be plate-like resonance bodies on string instruments such as string instruments, manual and mechanized plucking instruments (piano, grand piano, harpsichord, etc.), which generally consist of wood, but also tubes of wind instruments and the like.
  • vibrating bodies are all those physical components of sound generating devices and devices that participate in sound generation and sound transmission as well as sound radiation, including accessories or aids that only come into active connection with the actual devices or devices, such as bars, pegs, tuning rods, dampers of stringed instruments ten, bows of string instruments and more.
  • Loudspeaker membranes, loudspeaker housings and associated resonance and sound radiation structures are mentioned as examples from the area going beyond the actual musical instruments.
  • musical instruments and sound generating devices such as loudspeakers or the like, or the corresponding, complex vibration systems, e.g. string instrument together with the bow, bridge and other accessories that are operatively connected therewith, can emit sound frequencies which go far beyond the audibility spectrum, but which have no influence have on the sound image, but at most can negatively influence the overall balance of the vibration energy. Influencing the aud Frequency response or spectral ranges far from barkability are therefore generally only of marginal importance with regard to handling or excitation aspects of musical instruments and sound generating devices of other types.
  • this increase in amplitude is generally in the linear characteristic range, i.e. it cannot cause any interactions between these frequency ranges, and is in any case generally small compared to the dynamic range of the vibration amplitudes within the audible range.
  • fine-grained granules are to be understood as meaning powder-like particle distributions whose grain size is substantially below approximately 0.1 mm. In practice, however, grain size distributions with a much lower upper limit grain size are used for the purposes of the present invention, preferably with a size of less than 0.01 mm. For sound radiation surfaces from wooden soundboards or ceilings, such as those used for stringed instruments, upper limit grain sizes of approximately 0.005 mm have proven to be highly effective. In particular, colloidal distributions have proven to be effective.
  • the force transmission connection of the granulate particles to the sound radiation surface is concerned, this can be in the range between a flexible or even essentially only adhesion-related coupling, preferably also by a viscous binder, and a firm, shear stress-transmitting connection.
  • these different connection types and their gradations have differentiated effects on the sound and can be used accordingly for targeted effects.
  • the viscous bond primarily results in frictional forces between the sound radiation surface and the particles that perform oscillating relative movements, which mainly results in damping in higher frequency ranges with a correspondingly smooth tone color.
  • This attenuation is, of course, of a particularly intensive effect also for frequencies above the hearing limit and in the ultrasound range, if such can occur at all depending on the type of the vibrating body.
  • This ultrasound attenuation itself has no significant effect on the audible sound and - as explained above - also no significant interaction with the lower frequency ranges, but is an important indicator for the damping effect as such and especially for its selective effect in higher frequency ranges, namely down to the audible range.
  • Essential to the invention is the experimentally proven fact that the sound image influence is less about the surface-related granulate mass coverage than the grain mass or the mean value thereof and, remarkably, even the specific mass of the grain material, in the sense of a clear preference of materials with high densities, such as the noble and especially platinum metals mentioned.
  • platinum and osmium powder has surprisingly proven to be significantly effective in extremely low doses per unit area of the sound radiation surface in a firm bond in the direction of an improved sonority of treated soundboards or string instruments.
  • the attached drawing shows a plate-shaped resonance body in a schematic cross section with sound radiation surface SF and viscous or firmly integrated granulate coating GR in a corresponding binder BM.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Stringed Musical Instruments (AREA)
  • Pinball Game Machines (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Toys (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
EP83110100A 1982-10-09 1983-10-10 Corps vibrants, en particulier corps résonants pour dispositifs de génération du son Expired - Lifetime EP0107136B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83110100T ATE79191T1 (de) 1982-10-09 1983-10-10 Schwingkoerper, insbesondere resonanzkoerper, fuer klangerzeugungsgeraete und -vorrichtungen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823237547 DE3237547A1 (de) 1982-10-09 1982-10-09 Schwingkoerper, insbesondere resonanzkoerper, fuer klangerzeugungsgeraete und -vorrichtungen
DE3237547 1982-10-09

Publications (3)

Publication Number Publication Date
EP0107136A2 true EP0107136A2 (fr) 1984-05-02
EP0107136A3 EP0107136A3 (en) 1986-12-30
EP0107136B1 EP0107136B1 (fr) 1992-08-05

Family

ID=6175387

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83110100A Expired - Lifetime EP0107136B1 (fr) 1982-10-09 1983-10-10 Corps vibrants, en particulier corps résonants pour dispositifs de génération du son

Country Status (3)

Country Link
EP (1) EP0107136B1 (fr)
AT (1) ATE79191T1 (fr)
DE (2) DE3237547A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2177569A (en) * 1985-07-05 1987-01-21 Jamo Hi Fi As A loudspeaker unit

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3533777B2 (ja) * 1995-09-25 2004-05-31 ヤマハ株式会社 ピアノ用ハンマーおよびその成形方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE239805C (fr) *
CH83695A (de) * 1919-04-08 1920-05-17 Salom Rywosch Verfahren zur Verbesserung des Tones von Streich- und Zupfinstrumenten
DE361364C (de) * 1921-08-20 1922-10-13 Paul A R Frank Verfahren zur Verbesserung des Tones bei Saiteninstrumenten
GB316147A (en) * 1929-07-23 1930-12-23 Emil Bondy Musical instruments
DE611612C (de) * 1931-11-14 1935-04-03 Steatit Magnesia Akt Ges Aus mehreren Schichten verschiedener Leitfaehigkeit bestehende Membran fuer Apparate akustisch-mechanisch-elektrischer Umformung, wie Mikrophone
US3618442A (en) * 1965-09-25 1971-11-09 Nippon Musical Instruments Mfg Vibrating plates for sound instruments and method of manufacturing the same
US3508626A (en) * 1967-12-22 1970-04-28 Franklin Robbins Acoustic diaphragm
DE3163565D1 (en) * 1980-02-21 1984-06-20 Wharfedale Ltd Improvements in moving coil loudspeakers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2177569A (en) * 1985-07-05 1987-01-21 Jamo Hi Fi As A loudspeaker unit
GB2177569B (en) * 1985-07-05 1989-07-12 Jamo Hi Fi As A loudspeaker unit

Also Published As

Publication number Publication date
ATE79191T1 (de) 1992-08-15
DE3237547A1 (de) 1984-04-12
DE3382602D1 (de) 1992-09-10
EP0107136B1 (fr) 1992-08-05
EP0107136A3 (en) 1986-12-30

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