SE7800605L - Mikrofon for en handmikrotelefon - Google Patents

Mikrofon for en handmikrotelefon

Info

Publication number
SE7800605L
SE7800605L SE7800605A SE7800605A SE7800605L SE 7800605 L SE7800605 L SE 7800605L SE 7800605 A SE7800605 A SE 7800605A SE 7800605 A SE7800605 A SE 7800605A SE 7800605 L SE7800605 L SE 7800605L
Authority
SE
Sweden
Prior art keywords
microphone
hand
hand microphone
Prior art date
Application number
SE7800605A
Other languages
English (en)
Swedish (sv)
Inventor
R C Robinson
Original Assignee
Northern Telecom Ltd
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 Northern Telecom Ltd filed Critical Northern Telecom Ltd
Publication of SE7800605L publication Critical patent/SE7800605L/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Telephone Set Structure (AREA)
SE7800605A 1977-01-18 1978-01-18 Mikrofon for en handmikrotelefon SE7800605L (sv)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA269,918A CA1069233A (fr) 1977-01-18 1977-01-18 Emetteur-combine telephonique a reponse amelioree
US05/761,275 US4086445A (en) 1977-01-18 1977-01-21 Telephone handset transmitter with improved output response

Publications (1)

Publication Number Publication Date
SE7800605L true SE7800605L (sv) 1978-07-19

Family

ID=25668432

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7800605A SE7800605L (sv) 1977-01-18 1978-01-18 Mikrofon for en handmikrotelefon

Country Status (6)

Country Link
US (1) US4086445A (fr)
CA (1) CA1069233A (fr)
DE (1) DE2801654A1 (fr)
FR (1) FR2377736A1 (fr)
GB (1) GB1599554A (fr)
SE (1) SE7800605L (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NZ199275A (en) * 1980-12-16 1984-11-09 Minnesota Mining Mfg Australia Verification of recorded messages
FR2822617B1 (fr) * 2001-03-20 2003-08-01 Cit Alcatel Telephone mains libres tolerant aux fuites
US8094861B2 (en) * 2008-06-18 2012-01-10 Nien-Tzu Liu Speaker
US9628903B2 (en) 2014-12-23 2017-04-18 Bose Corporation Microspeaker acoustical resistance assembly

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2540498A (en) * 1949-03-18 1951-02-06 Bell Telephone Labor Inc Microphone damping system having rear openings
AT227805B (de) * 1961-10-03 1963-06-10 Schallwandler für Diktiergeräte
NL291745A (fr) * 1962-04-27
DE2052444A1 (de) * 1970-10-26 1971-11-04 Sennheiser Electronic Dynamisches Lavaliermikrofon
DE2246981B2 (de) * 1972-09-25 1974-07-18 Siemens Ag, 1000 Berlin U. 8000 Muenchen Anordnung zur Frequenzgangbeeinflussung elektroakustischer Wandler

Also Published As

Publication number Publication date
DE2801654A1 (de) 1978-07-20
GB1599554A (en) 1981-10-07
FR2377736A1 (fr) 1978-08-11
US4086445A (en) 1978-04-25
CA1069233A (fr) 1980-01-01

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