BE389811A - - Google Patents

Info

Publication number
BE389811A
BE389811A BE389811DA BE389811A BE 389811 A BE389811 A BE 389811A BE 389811D A BE389811D A BE 389811DA BE 389811 A BE389811 A BE 389811A
Authority
BE
Belgium
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.)
Filing date
Publication date
Application filed filed Critical
Publication of BE389811A publication Critical patent/BE389811A/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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/08—Microphones
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/72—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using ultrasonic, sonic or infrasonic waves
    • 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
    • H04R1/08—Mouthpieces; Microphones; Attachments therefor
    • H04R1/083—Special constructions of mouthpieces
    • 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 
    • H04R1/222—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only  for microphones
    • 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
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
    • H04R1/38—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means in which sound waves act upon both sides of a diaphragm and incorporating acoustic phase-shifting means, e.g. pressure-gradient microphone
    • 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
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
    • 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
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
    • H04R1/406—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers microphones

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
BE389811D 1931-03-31 1932-07-13 BE389811A (US06265458-20010724-C00049.png)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US526598A US1885001A (en) 1931-03-31 1931-03-31 Apparatus for converting sound vibrations into electrical variations
US612466A US1892645A (en) 1931-03-31 1932-05-20 Sound pick-up device

Publications (1)

Publication Number Publication Date
BE389811A true BE389811A (US06265458-20010724-C00049.png) 1932-08-31

Family

ID=24097986

Family Applications (4)

Application Number Title Priority Date Filing Date
BE396402D BE396402A (US06265458-20010724-C00049.png) 1931-03-31
BE387520D BE387520A (US06265458-20010724-C00049.png) 1931-03-31 1932-03-31
BE389811D BE389811A (US06265458-20010724-C00049.png) 1931-03-31 1932-07-13
BE428292D BE428292A (US06265458-20010724-C00049.png) 1931-03-31 1938-05-27

Family Applications Before (2)

Application Number Title Priority Date Filing Date
BE396402D BE396402A (US06265458-20010724-C00049.png) 1931-03-31
BE387520D BE387520A (US06265458-20010724-C00049.png) 1931-03-31 1932-03-31

Family Applications After (1)

Application Number Title Priority Date Filing Date
BE428292D BE428292A (US06265458-20010724-C00049.png) 1931-03-31 1938-05-27

Country Status (6)

Country Link
US (3) US1885001A (US06265458-20010724-C00049.png)
BE (4) BE387520A (US06265458-20010724-C00049.png)
DE (2) DE607620C (US06265458-20010724-C00049.png)
FR (1) FR733929A (US06265458-20010724-C00049.png)
GB (2) GB386478A (US06265458-20010724-C00049.png)
NL (1) NL39328C (US06265458-20010724-C00049.png)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2239503A (en) * 1938-08-05 1941-04-22 Rca Corp Sound pickup apparatus
US2476396A (en) * 1939-12-28 1949-07-19 Rca Corp Magnetic equalization of sensitivity in ribbon microphone assemblies
US2417927A (en) * 1943-03-22 1947-03-25 Automatic Elect Lab Sound direction finder
GB611209A (en) * 1944-08-29 1948-10-27 Standard Telephones Cables Ltd Improvements in or relating to microphones
US2544536A (en) * 1947-05-28 1951-03-06 Rca Corp Microphone
US2552311A (en) * 1948-08-28 1951-05-08 Rca Corp Ribbon support for high fidelity electroacoustical sound transducers
DE1047250B (de) * 1953-01-22 1958-12-24 Alexander Schaaf Elektroakustischer Wandler (Mikrofon und Lautsprecher) mit einer nach dem elektrostatischen Prinzip arbeitenden Membran
EP1813132B1 (en) 2004-10-21 2019-08-14 Shure Incorporated Acoustic ribbon transducer arrangements
US7936894B2 (en) * 2004-12-23 2011-05-03 Motorola Mobility, Inc. Multielement microphone
WO2015077099A1 (en) * 2013-11-21 2015-05-28 Ghaffari Mohsen Tunable ribbon microphone
US9877110B2 (en) 2014-12-29 2018-01-23 Michael Patrick Timmins Ribbon support system for electrodynamic microphone
US10573291B2 (en) 2016-12-09 2020-02-25 The Research Foundation For The State University Of New York Acoustic metamaterial

Also Published As

Publication number Publication date
GB405497A (en) 1934-02-08
US1885001A (en) 1932-10-25
GB386478A (en) 1933-01-19
DE656210C (de) 1938-01-31
US1892645A (en) 1932-12-27
BE387520A (US06265458-20010724-C00049.png) 1932-05-31
DE607620C (de) 1935-01-03
NL39328C (US06265458-20010724-C00049.png) 1936-11-16
BE428292A (US06265458-20010724-C00049.png) 1938-08-31
BE396402A (US06265458-20010724-C00049.png)
FR733929A (fr) 1932-10-14
USRE19115E (en) 1934-03-13

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