NL109829C - - Google Patents

Info

Publication number
NL109829C
NL109829C NL109829DA NL109829C NL 109829 C NL109829 C NL 109829C NL 109829D A NL109829D A NL 109829DA NL 109829 C NL109829 C NL 109829C
Authority
NL
Netherlands
Application number
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.)
Publication of NL109829C publication Critical patent/NL109829C/xx

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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2807—Enclosures comprising vibrating or resonating arrangements
    • H04R1/2815—Enclosures comprising vibrating or resonating arrangements of the bass reflex type
    • H04R1/2819—Enclosures comprising vibrating or resonating arrangements of the bass reflex type for loudspeaker transducers
    • 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
    • H04R7/122—Non-planar diaphragms or cones comprising a plurality of sections or layers

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
NL109829D 1956-07-24 NL109829C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT556921 1956-07-24

Publications (1)

Publication Number Publication Date
NL109829C true NL109829C (en)

Family

ID=11120284

Family Applications (2)

Application Number Title Priority Date Filing Date
NL219278D NL219278A (en) 1956-07-24
NL109829D NL109829C (en) 1956-07-24

Family Applications Before (1)

Application Number Title Priority Date Filing Date
NL219278D NL219278A (en) 1956-07-24

Country Status (7)

Country Link
US (1) US3009528A (en)
BE (1) BE559436A (en)
CH (1) CH355813A (en)
DE (1) DE1109736B (en)
FR (1) FR1183056A (en)
GB (1) GB854851A (en)
NL (2) NL109829C (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8301653A (en) * 1983-05-10 1984-12-03 Philips Nv ELECTRO-ACOUSTIC CONVERTER WITH AN AIR-PERMISSIBLE MEMBRANE.
DE3929266C1 (en) * 1989-09-02 1991-01-03 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De
US5159139A (en) * 1990-06-13 1992-10-27 Evans Products, Inc. Drumhead with overtone suppression
DE102015106240A1 (en) * 2015-04-23 2016-10-27 Valeo Schalter Und Sensoren Gmbh Ultrasonic sensor for a motor vehicle with a through-passage membrane, trim arrangement and motor vehicle

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB248497A (en) * 1924-12-12 1926-03-11 John Sydney Robert James Improvements in and relating to diaphragms for sound boxes
DE463900C (en) * 1925-05-05 1928-08-04 Kallistophon G M B H Electromagnetic loudspeaker with a sound membrane designed as a fan
US2122587A (en) * 1925-07-20 1938-07-05 Rca Corp Acoustic device
GB256395A (en) * 1925-07-29 1926-08-12 Charles Mahe De Chenal De La B Improvements in, or relating to, loud-speakers, gramophones, and other sound-recording or reproducing apparatus
GB301638A (en) * 1927-11-24 1928-12-06 Sidney George Brown Improvements in or relating to loud speakers
DE557850C (en) * 1929-06-12 1932-09-01 Cantora Soc Sound reproduction device, sound box for speaking machines, electric loudspeakers or the like.
US1869178A (en) * 1930-08-15 1932-07-26 Bell Telephone Labor Inc Sound translating device
US1997790A (en) * 1931-03-07 1935-04-16 Stephen L Heidrich Acoustic diaphragm
DE593201C (en) * 1931-04-15 1934-02-23 I M K Syndicate Ltd Device for image decomposition and composition in television
US2022060A (en) * 1934-08-29 1935-11-26 Bell Telephone Labor Inc Acoustic device
DE667495C (en) * 1935-07-09 1938-11-12 Telefunken Gmbh Process for reducing the natural frequency of vibration to a specified target value of loudspeaker diaphragms manufactured using the cardboard casting or Schoepf process
NL90604C (en) * 1951-12-05
US2766839A (en) * 1953-03-16 1956-10-16 Research Corp Loudspeaker system
US2712360A (en) * 1954-05-06 1955-07-05 Reisz Eugene Membrane for sound reproducing devices
US2845135A (en) * 1955-09-26 1958-07-29 Arthur Blumenfeld Auxiliary wave propagating and directing attachment for loudspeaker diaphragms

Also Published As

Publication number Publication date
NL219278A (en)
US3009528A (en) 1961-11-21
GB854851A (en) 1960-11-23
CH355813A (en) 1961-07-31
FR1183056A (en) 1959-07-02
DE1109736B (en) 1961-06-29
BE559436A (en)

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