EP0491139A3 - Diaphragm for electroacoustic transducer with discontinuous variation of the aperture angle - Google Patents

Diaphragm for electroacoustic transducer with discontinuous variation of the aperture angle Download PDF

Info

Publication number
EP0491139A3
EP0491139A3 EP19910118025 EP91118025A EP0491139A3 EP 0491139 A3 EP0491139 A3 EP 0491139A3 EP 19910118025 EP19910118025 EP 19910118025 EP 91118025 A EP91118025 A EP 91118025A EP 0491139 A3 EP0491139 A3 EP 0491139A3
Authority
EP
European Patent Office
Prior art keywords
diaphragm
degrees
aperture angles
electroacoustic transducer
aperture angle
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
EP19910118025
Other languages
German (de)
Other versions
EP0491139B1 (en
EP0491139A2 (en
Inventor
Dieter Ennemoser
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.)
ENNEMOSER, DIETER
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
Publication of EP0491139A2 publication Critical patent/EP0491139A2/en
Publication of EP0491139A3 publication Critical patent/EP0491139A3/en
Application granted granted Critical
Publication of EP0491139B1 publication Critical patent/EP0491139B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • H04R7/127—Non-planar diaphragms or cones dome-shaped

Abstract

The invention is a diaphragm for electroacoustic transducers with the object of approximating the decay spectrum (postoscillation) of the diaphragm to the decay spectrum of the human auditory apparatus. For this purpose, the diaphragm is to be constructed from at least two cones with different aperture angles. The applicable aperture angles are 163, 157, 140, 114, 98, 82 and 66 degrees. A more natural and pleasant sound impression is produced by the coincidence of the characteristic oscillations of the ear with the characteristic oscillations of the transducer. Overview of the figures: Figure 1: Cross-section of the diaphragm with the aperture angles alpha = 140 degrees and beta = 114 degrees (1) = suspension (2) = drive (3) = diaphragm Figure 2: Cross-section through a concave diaphragm with the aperture angles 114 degrees, 140 degrees and 157 degrees. (1) = suspension (2a), (2b) two possible drive types as examples (3) = diaphragm <IMAGE>
EP91118025A 1990-10-25 1991-10-23 Diaphragm for electroacoustic transducer with discontinuous variation of the aperture angle Expired - Lifetime EP0491139B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0215390A AT396859B (en) 1990-10-25 1990-10-25 MEMBRANE FOR AN ELECTRO-ACOUSTIC TRANSFORMER WITH A CONTINUOUS CHANGE OF THE OPENING ANGLE FOR THE ADAPTATION TO THE HEARING FUNCTION
AT2153/90 1990-10-25

Publications (3)

Publication Number Publication Date
EP0491139A2 EP0491139A2 (en) 1992-06-24
EP0491139A3 true EP0491139A3 (en) 1993-01-13
EP0491139B1 EP0491139B1 (en) 1994-07-06

Family

ID=3528906

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91118025A Expired - Lifetime EP0491139B1 (en) 1990-10-25 1991-10-23 Diaphragm for electroacoustic transducer with discontinuous variation of the aperture angle

Country Status (3)

Country Link
EP (1) EP0491139B1 (en)
AT (2) AT396859B (en)
DE (1) DE59102121D1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1276265B1 (en) * 1994-02-14 1997-10-28 Karl Mantinger POLAR TYPE ELECTRODYNAMIC TRANSDUCER WITH VIBRATING BODY.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB369992A (en) * 1929-12-19 1932-03-21 Ernst Oscar Persson An acoustic diaphragm
DE899048C (en) * 1950-05-04 1953-12-07 Adelbert Stephan Loudspeaker with tilt-free multi-cone membrane
US3955055A (en) * 1974-01-31 1976-05-04 Sony Corporation Dynamic loudspeaker

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR844211A (en) * 1938-03-31 1939-07-20 Improvements to sound reproducing devices such as loudspeakers
FR1251411A (en) * 1959-12-10 1961-01-20 D Applic Radio Electr Soc Ind Improvements to speaker membranes
JPS531517A (en) * 1976-06-25 1978-01-09 Kenzou Inoue Dynamic speaker and method of producing same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB369992A (en) * 1929-12-19 1932-03-21 Ernst Oscar Persson An acoustic diaphragm
DE899048C (en) * 1950-05-04 1953-12-07 Adelbert Stephan Loudspeaker with tilt-free multi-cone membrane
US3955055A (en) * 1974-01-31 1976-05-04 Sony Corporation Dynamic loudspeaker

Also Published As

Publication number Publication date
EP0491139B1 (en) 1994-07-06
EP0491139A2 (en) 1992-06-24
DE59102121D1 (en) 1994-08-11
AT396859B (en) 1993-12-27
ATE108289T1 (en) 1994-07-15
ATA215390A (en) 1993-04-15

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