EP0334219A2 - Kontaktmikrophon - Google Patents

Kontaktmikrophon Download PDF

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Publication number
EP0334219A2
EP0334219A2 EP89104754A EP89104754A EP0334219A2 EP 0334219 A2 EP0334219 A2 EP 0334219A2 EP 89104754 A EP89104754 A EP 89104754A EP 89104754 A EP89104754 A EP 89104754A EP 0334219 A2 EP0334219 A2 EP 0334219A2
Authority
EP
European Patent Office
Prior art keywords
sheet
noise
hollow
transducing
voice
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.)
Withdrawn
Application number
EP89104754A
Other languages
English (en)
French (fr)
Other versions
EP0334219A3 (de
Inventor
Eugenio Parisi
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.)
M-P & Sd Di-Parisi Eugenio Marketing Promotion & Systems Development
Original Assignee
M-P & Sd Di-Parisi Eugenio Marketing Promotion & Systems Development
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 M-P & Sd Di-Parisi Eugenio Marketing Promotion & Systems Development filed Critical M-P & Sd Di-Parisi Eugenio Marketing Promotion & Systems Development
Publication of EP0334219A2 publication Critical patent/EP0334219A2/de
Publication of EP0334219A3 publication Critical patent/EP0334219A3/de
Withdrawn legal-status Critical Current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; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/46—Special adaptations for use as contact microphones, e.g. on musical instrument, on stethoscope

Definitions

  • the present invention relates to a device for transducing noise generated inside a body, in particular voice, with a substantial damping of environmental noise.
  • the core of the invention is to provide a noise transducing device so designed and arranged as to transudce noise not directly as an acoustic phenomenon through the air, but as a vibration of a surface of the noise generating body.
  • Typical applications of the transducing device according to the invention would be voice communications through a highly noisy environments (such as 110-120 dB's), e.g. the inside environment of tanks, airplanes and the like, sports fields, engine testing rooms, machine rooms of ships and any other environments in which it would be necessary to voice communicate in the presence of a noise so great as to practically hinder such a communication; the detection of noise generated in a separated environment, such as the heart beat of a foetus or the voices of persons standing in separated and adjoining rooms; and the analysis of a given part of a machinery item.
  • a highly noisy environments such as 110-120 dB's
  • the detection of noise generated in a separated environment such as the heart beat of a foetus or the voices of persons standing in separated and adjoining rooms
  • analysis of a given part of a machinery item such as the heart beat of a foetus or the voices of persons standing in separated and adjoining rooms.
  • noise cancelling microphones specifically designed for improving voice communications.
  • These microphones are based on the fact that the sound waves of the environment noise will enter two opposite slots of the microphone so as to impinge on the two opposite sides of the microphone membrane and cancel at least partially, whereas voice will mainly enter only one of the slots, to impinge against the membrane and cause it to vibrate.
  • These presently commercially available microphones mainly comprise a small electrodynamic including a coil rigid with the membrane and lying in a permanent magnetic field.
  • the laringophone which is conventionally formed by two microphone elements which are pressed as a pliers on the laryinx region but which, on the other hand, has great drawbacks hindering a broad diffusion thereof.
  • the main drawback of the laringophone is that it causes troubles to the operator upon long use.
  • the signal/noise ratio moreover, that is the ratio of the sound level of the voice signal and the sound level of the environment noise, is less than that of the cancellation microphone.
  • the laringophone furthermore, has the drawback that it is not able of transmitting the sound "S".
  • the main object of the present invention is to overcome the above mentioned drawbacks, by providing a device for transducing noise, in particular voice, which includes contemporaneously the following features: - a great damping or roll-off of the environment noise; - a great signal/noise ratio which, in the subject application as a voice transducer, does not require any large vocal effort by the speaker; - a highly reliable operation and absence of maintenance; - a very high resistance against impacts and atmospheric, chemical and the like agents; - a good resistance to thermal changes; and - a comparatively simple structure and a low making cost.
  • the device for transducing noise generated inside a body, in particular voice, with a great damping of environment noise is essentially characterized in that said device comprises a sheet like element adapted to operate as a transducer proper and associated with a supporting body provided for exerting a pressure between said sheet like element and a contact surface forming a part of said noise generating body, the electric output signal from said sheet like element being conventionally applied to an amplifier, noise analyzer or the like apparatus.
  • the outer surface of the sheet like element can be coated by a removable and replaceable film material layer, so as to provide the possibility of using the device by lot of speakers or users without any dangers of transmitting infectious diseases.
  • the sheet like element-support member assembly is to be used in an environment having a pressure greater than the atmospheric pressure, then the device can be constructed with a pressurized tight construction.
  • the device - indicated overally at the reference number 1 - comprises a supporting hollow body 2, made of a great weight material, on the opening of which there is applied a conventional buzzer, consisting of a sheet like element 3 thereto there is coupled a ceramics layer 4, in which there is embedded a contact member (not shown) of omega shape, from the two end portions whereof two wires 5,5′ extend said wires ending on a pair of small rods 6,6′ rigid with the bottom of the hollow body 2. From the rods 6,6′ there extend two further wires which, in the embodiment being disclosed, end with a conventional headphone 7 which is coupled to a receiving-transmitting device 8.
  • the device 1 is so arranged as to contact a cheek of the speaker, or operator, and is herein pressed at its proper position by means of a harness assembly supported by the head-phone 7.
  • the sensivity of the device according to the invention is such that the device 1 can be arranged to contact other parties of the speaker's body, provided that they are subjected to voice generated vibration, such as the front, and this with comparatively good results.
  • the sheet like element if desired, can be coated by a film material 9 to be removed and replaced according to requirements.
  • the assembly 2,3 can be tight constructed and the hollow defined by the body 2 can be pressurized so as to compensate, in use, the outer pressure.
  • a negative pressure can be generated adapted to fit a possible negative pressure of the outer environment.
  • the signal transduced by the device according to the invention is remarkably more intelligible than that of other presently commercially available devices.
  • the hollow body 2 has a cylindrical shape; however it may have any other shape suitable for the application of the subject device and the hollow of said body will be designed depending on the frequency response to be obtained.
  • This hollow moreover, may hold microcircuits printed by the SMD method, for example, in order to switch on and off the control system.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
EP19890104754 1988-03-21 1989-03-16 Kontaktmikrophon Withdrawn EP0334219A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1987388 1988-03-21
IT19873/88A IT1218059B (it) 1988-03-21 1988-03-21 Dispositivo di trasduzione dei rumori generati all'interno di un corpo,in particolare della voce,con sostanziale abbattimento dei rumori ambientali

Publications (2)

Publication Number Publication Date
EP0334219A2 true EP0334219A2 (de) 1989-09-27
EP0334219A3 EP0334219A3 (de) 1991-04-03

Family

ID=11161971

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890104754 Withdrawn EP0334219A3 (de) 1988-03-21 1989-03-16 Kontaktmikrophon

Country Status (5)

Country Link
EP (1) EP0334219A3 (de)
AU (1) AU3156389A (de)
BR (1) BR8901314A (de)
IL (1) IL89655A0 (de)
IT (1) IT1218059B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5785069A (en) * 1994-03-03 1998-07-28 Glatz Ag Standing umbrella
WO1999009785A1 (en) * 1997-08-19 1999-02-25 Electronics And Telecommunications Research Institute Telephone with a receiver arousing bone-conduction and air-conduction hearing
US6603863B1 (en) * 1998-12-25 2003-08-05 Matsushita Electric Industrial Co., Ltd. Headphone apparatus for providing dynamic sound with vibrations and method therefor

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4013992A (en) * 1976-01-28 1977-03-22 The United States Of America As Represented By The Secretary Of The Navy Diver's piezoelectric microphone with integral agc preamplifier
FR2448817A1 (fr) * 1979-02-08 1980-09-05 Kauffmann Paulette Capsule de protection anti-microbienne pour combine telephonique
DE3023155A1 (de) * 1980-06-20 1982-01-07 Telemit Electronic GmbH, 8000 München Kontaktmikrofon zur aufnahme der menschlichen sprache
US4591668A (en) * 1984-05-08 1986-05-27 Iwata Electric Co., Ltd. Vibration-detecting type microphone
US4607383A (en) * 1983-08-18 1986-08-19 Gentex Corporation Throat microphone
EP0201421A1 (de) * 1985-05-02 1986-11-12 Societe Industrielle De Liaisons Electriques - Silec Körperschallaufnehmer mit einer piezopolymeren Membran

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4013992A (en) * 1976-01-28 1977-03-22 The United States Of America As Represented By The Secretary Of The Navy Diver's piezoelectric microphone with integral agc preamplifier
FR2448817A1 (fr) * 1979-02-08 1980-09-05 Kauffmann Paulette Capsule de protection anti-microbienne pour combine telephonique
DE3023155A1 (de) * 1980-06-20 1982-01-07 Telemit Electronic GmbH, 8000 München Kontaktmikrofon zur aufnahme der menschlichen sprache
US4607383A (en) * 1983-08-18 1986-08-19 Gentex Corporation Throat microphone
US4591668A (en) * 1984-05-08 1986-05-27 Iwata Electric Co., Ltd. Vibration-detecting type microphone
EP0201421A1 (de) * 1985-05-02 1986-11-12 Societe Industrielle De Liaisons Electriques - Silec Körperschallaufnehmer mit einer piezopolymeren Membran

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5785069A (en) * 1994-03-03 1998-07-28 Glatz Ag Standing umbrella
WO1999009785A1 (en) * 1997-08-19 1999-02-25 Electronics And Telecommunications Research Institute Telephone with a receiver arousing bone-conduction and air-conduction hearing
US6603863B1 (en) * 1998-12-25 2003-08-05 Matsushita Electric Industrial Co., Ltd. Headphone apparatus for providing dynamic sound with vibrations and method therefor

Also Published As

Publication number Publication date
IT1218059B (it) 1990-04-12
AU3156389A (en) 1989-09-21
EP0334219A3 (de) 1991-04-03
IL89655A0 (en) 1989-09-28
IT8819873A0 (it) 1988-03-21
BR8901314A (pt) 1989-11-07

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