CH271258A - Microphone du type à résistance variable. - Google Patents

Microphone du type à résistance variable.

Info

Publication number
CH271258A
CH271258A CH271258DA CH271258A CH 271258 A CH271258 A CH 271258A CH 271258D A CH271258D A CH 271258DA CH 271258 A CH271258 A CH 271258A
Authority
CH
Switzerland
Prior art keywords
microphone
variable resistance
resistance type
type
variable
Prior art date
Application number
Other languages
English (en)
Inventor
S A Standard Telephone E Radio
Original Assignee
Standard Telephone & Radio Sa
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
Priority claimed from GB15574/44A external-priority patent/GB594082A/en
Priority claimed from GB21942/45A external-priority patent/GB616158A/en
Application filed by Standard Telephone & Radio Sa filed Critical Standard Telephone & Radio Sa
Publication of CH271258A publication Critical patent/CH271258A/fr

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
    • H04R21/00—Variable-resistance transducers
    • H04R21/02—Microphones
    • H04R21/021—Microphones with granular resistance material
    • 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
    • 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
    • H04R7/16—Mounting or tensioning of 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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Toys (AREA)
CH271258D 1944-08-15 1946-08-10 Microphone du type à résistance variable. CH271258A (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB15574/44A GB594082A (en) 1945-08-27 1944-08-15 Improvements in or relating to microphones
GB21942/45A GB616158A (en) 1944-08-15 1945-08-27 Improvements in or relating to electro-acoustic devices
GB2131/47A GB631970A (en) 1944-08-15 1947-01-23 Improvements in or relating to acoustic diaphragms

Publications (1)

Publication Number Publication Date
CH271258A true CH271258A (fr) 1950-10-15

Family

ID=36952628

Family Applications (2)

Application Number Title Priority Date Filing Date
CH271258D CH271258A (fr) 1944-08-15 1946-08-10 Microphone du type à résistance variable.
CH263325D CH263325A (de) 1944-08-15 1948-01-23 Akustische Membran für elektroakustische Wandler.

Family Applications After (1)

Application Number Title Priority Date Filing Date
CH263325D CH263325A (de) 1944-08-15 1948-01-23 Akustische Membran für elektroakustische Wandler.

Country Status (6)

Country Link
US (2) US2521744A (fr)
BE (3) BE477474A (fr)
CH (2) CH271258A (fr)
DE (3) DE940654C (fr)
FR (3) FR939111A (fr)
GB (1) GB631970A (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012220006A1 (de) * 2012-11-02 2014-05-08 Robert Bosch Gmbh Bauelement mit einer mikromechanischen Mikrofonstruktur
USD966235S1 (en) 2019-08-23 2022-10-11 Tymphany Acoustic Technology Limited Waveguide

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1141107A (en) * 1902-01-27 1915-06-01 Kellogg Switchboard & Supply Telephone-transmitter.
AU107204B (en) * 1904-07-15 1905-06-27 And Improvements inthe wheels of steam or gas turbines
US1226886A (en) * 1913-05-13 1917-05-22 New Jersey Patent Co Telephone-transmitter.
US1352939A (en) * 1917-02-24 1920-09-14 Western Electric Co Telephone-transmitter
US1869230A (en) * 1929-08-16 1932-07-26 Philadelphia Storage Battery Electrical element
US1848433A (en) * 1929-09-09 1932-03-08 Magnavox Co Loud speaker element
US1846351A (en) * 1930-06-13 1932-02-23 Murkham Leonard Walter Electrodynamic sound-reproducing device
US1943425A (en) * 1931-12-26 1934-01-16 Kellogg Switchboard & Supply Diaphragm
US2069242A (en) * 1933-01-19 1937-02-02 George A Graham Electroacoustic energy converting system
US1930328A (en) * 1933-01-25 1933-10-10 Tichenor Sound reproducing diaphragm
BE402491A (fr) * 1933-05-11
GB425558A (en) * 1933-10-26 1935-03-18 Alfred Graham & Co Ltd Improvements relating to telephones
GB425186A (en) * 1933-11-24 1935-03-08 Alfred Graham & Co Ltd Improvements relating to telephones
US2043833A (en) * 1934-11-12 1936-06-09 Abraham I Klotz Protecting framing for brief cases
US2191992A (en) * 1937-03-31 1940-02-27 Int Standard Electric Corp Telephone transmitter
US2293078A (en) * 1939-12-05 1942-08-18 B A Proctor Company Inc Microphone
CH220358A (de) * 1940-10-26 1942-03-31 Fides Gmbh Kapselmikrofon.

Also Published As

Publication number Publication date
FR57814E (fr) 1953-09-17
GB631970A (en) 1949-11-14
DE940654C (de) 1956-03-22
CH263325A (de) 1949-08-31
BE477474A (fr) 1948-05-20
BE478254A (fr) 1948-05-17
DE873103C (de) 1953-04-09
BE482597A (fr)
DE862768C (de) 1953-01-12
FR939111A (fr) 1948-11-04
US2521744A (en) 1950-09-12
FR58186E (fr) 1953-09-29
US2539488A (en) 1951-01-30

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