FI42731B - - Google Patents

Info

Publication number
FI42731B
FI42731B FI0829/63A FI82963A FI42731B FI 42731 B FI42731 B FI 42731B FI 0829/63 A FI0829/63 A FI 0829/63A FI 82963 A FI82963 A FI 82963A FI 42731 B FI42731 B FI 42731B
Authority
FI
Finland
Application number
FI0829/63A
Other languages
Finnish (fi)
Inventor
E Martin
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Application granted granted Critical
Publication of FI42731B publication Critical patent/FI42731B/fi

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 
    • H04R1/225—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only  for telephonic receivers

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
FI0829/63A 1962-04-27 1963-04-26 FI42731B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES79202A DE1188656B (en) 1962-04-27 1962-04-27 Arrangement for improving the frequency response of an electroacoustic converter

Publications (1)

Publication Number Publication Date
FI42731B true FI42731B (en) 1970-06-30

Family

ID=7508023

Family Applications (1)

Application Number Title Priority Date Filing Date
FI0829/63A FI42731B (en) 1962-04-27 1963-04-26

Country Status (8)

Country Link
US (1) US3246721A (en)
BE (1) BE631608A (en)
CH (1) CH399542A (en)
DE (1) DE1188656B (en)
FI (1) FI42731B (en)
GB (1) GB999378A (en)
NL (2) NL142042B (en)
SE (1) SE318610B (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3396241A (en) * 1964-10-23 1968-08-06 Russell K Anderson Stethoscope with sound spectrum selection
CH528197A (en) * 1971-12-20 1972-09-15 Ibm Housing arrangement with an electro-acoustic transducer, and use of the same in a telephone set of a communication system with PCM coding
CA1069233A (en) * 1977-01-18 1980-01-01 Northern Telecom Limited Telephone hand set transmitter with improved output response
DE2948034A1 (en) * 1979-11-29 1981-06-11 Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt Electroacoustic converter assembly - has loudspeaker mounted inside housing divided into two chambers by PCB
JPS6163193A (en) * 1984-09-04 1986-04-01 Nippon Chemicon Corp Electroacoustic transducer
JPH0450718Y2 (en) * 1986-02-28 1992-11-30
US4727583A (en) * 1986-10-28 1988-02-23 Motorola, Inc. Telephone transducer with improved frequency response
WO1989004106A1 (en) * 1987-10-28 1989-05-05 Acs Communications, Inc. Acoustic filter microphone cup
US4864611A (en) * 1987-11-24 1989-09-05 Helmuth Keld T Telephone handset attachment for use in-the-ear hearing aids
US4977975A (en) * 1989-09-14 1990-12-18 Lazzeroni John J Vented motorcycle helmet speaker enclosure
US7305098B2 (en) * 2002-05-24 2007-12-04 Phonak Ag Hearing device
US8111854B2 (en) 2006-11-29 2012-02-07 Yan-Ru Peng Methods and apparatus for sound production
TWI285510B (en) * 2006-01-10 2007-08-11 Gaiatek Inc Personal type leads of a sound device
ES2686074T3 (en) * 2013-10-30 2018-10-16 Svantek Sp. Z O.O. Device to measure the sound level
US10171905B2 (en) * 2016-02-14 2019-01-01 Transound Electronics Co., Ltd. Headphones with frequency-targeted resonance chambers
US10542337B2 (en) * 2017-07-18 2020-01-21 Shure Acquisition Holdings, Inc. Moving coil microphone transducer with secondary port
US10623847B2 (en) * 2018-08-02 2020-04-14 EVA Automation, Inc. Headphone with multiple acoustic paths

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1854716A (en) * 1929-01-24 1932-04-19 Herman G Pape Sound instrument
US2327137A (en) * 1941-05-21 1943-08-17 Sonotone Corp Hearing aid microphone
US2342334A (en) * 1942-07-11 1944-02-22 Maico Company Inc Variable baffle for translating devices
US2490466A (en) * 1944-07-19 1949-12-06 Rca Corp Loudspeaker diaphragm support comprising plural compliant members
US2524393A (en) * 1947-12-06 1950-10-03 E A Myers & Sons Noise reducing hearing aid case
US2585052A (en) * 1948-04-23 1952-02-12 Int Standard Electric Corp Granule type acoustic transducer
GB698695A (en) * 1951-01-11 1953-10-21 Lustraphone Ltd Improvements in or relating to microphones
DE1078174B (en) * 1956-02-25 1960-03-24 Dr Emil Podszus Suspension for speaker cones with special damping

Also Published As

Publication number Publication date
GB999378A (en) 1965-07-21
NL142042B (en) 1974-04-16
CH399542A (en) 1965-09-30
SE318610B (en) 1969-12-15
US3246721A (en) 1966-04-19
NL291745A (en)
DE1188656B (en) 1965-03-11
BE631608A (en)

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