GB148312A - Improvements in and relating to telephony - Google Patents

Improvements in and relating to telephony

Info

Publication number
GB148312A
GB148312A GB20226/20A GB2022620A GB148312A GB 148312 A GB148312 A GB 148312A GB 20226/20 A GB20226/20 A GB 20226/20A GB 2022620 A GB2022620 A GB 2022620A GB 148312 A GB148312 A GB 148312A
Authority
GB
United Kingdom
Prior art keywords
microphone
telephony
relating
loewe
larynx
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.)
Expired
Application number
GB20226/20A
Other languages
English (en)
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.)
Dr Erich F Huth GmbH
Original Assignee
Dr Erich F Huth GmbH
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 Dr Erich F Huth GmbH filed Critical Dr Erich F Huth GmbH
Publication of GB148312A publication Critical patent/GB148312A/en
Expired 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
    • H04R21/00—Variable-resistance transducers
    • H04R21/02—Microphones
    • H04R21/021—Microphones with granular resistance material
    • 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
    • H04R1/14—Throat mountings 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
    • H04R1/46—Special adaptations for use as contact microphones, e.g. on musical instrument, on stethoscope

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Prostheses (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
GB20226/20A 1915-12-31 1920-07-09 Improvements in and relating to telephony Expired GB148312A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1664220X 1915-12-31

Publications (1)

Publication Number Publication Date
GB148312A true GB148312A (en) 1921-10-10

Family

ID=7738668

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20226/20A Expired GB148312A (en) 1915-12-31 1920-07-09 Improvements in and relating to telephony

Country Status (4)

Country Link
US (1) US1664220A (enrdf_load_stackoverflow)
DE (2) DE301724C (enrdf_load_stackoverflow)
FR (1) FR535475A (enrdf_load_stackoverflow)
GB (1) GB148312A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
DE301724C (enrdf_load_stackoverflow)
FR535475A (fr) 1922-04-15
DE309261C (enrdf_load_stackoverflow)
US1664220A (en) 1928-03-27

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