DD104891A1 - - Google Patents

Info

Publication number
DD104891A1
DD104891A1 DD17231073A DD17231073A DD104891A1 DD 104891 A1 DD104891 A1 DD 104891A1 DD 17231073 A DD17231073 A DD 17231073A DD 17231073 A DD17231073 A DD 17231073A DD 104891 A1 DD104891 A1 DD 104891A1
Authority
DD
German Democratic Republic
Application number
DD17231073A
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
Priority to DD17231073A priority Critical patent/DD104891A1/xx
Publication of DD104891A1 publication Critical patent/DD104891A1/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
    • 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
    • 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
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H04R17/02—Microphones
DD17231073A 1973-07-11 1973-07-11 DD104891A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DD17231073A DD104891A1 (ja) 1973-07-11 1973-07-11

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD17231073A DD104891A1 (ja) 1973-07-11 1973-07-11

Publications (1)

Publication Number Publication Date
DD104891A1 true DD104891A1 (ja) 1974-03-20

Family

ID=5492105

Family Applications (1)

Application Number Title Priority Date Filing Date
DD17231073A DD104891A1 (ja) 1973-07-11 1973-07-11

Country Status (1)

Country Link
DD (1) DD104891A1 (ja)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2650466A1 (fr) * 1989-07-18 1991-02-01 Messerschmitt Boelkow Blohm Microphone de detection et de localisation de sources sonores
WO2001037519A2 (en) 1999-11-19 2001-05-25 Gentex Corporation Vehicle accessory microphone
US7447320B2 (en) 2001-02-14 2008-11-04 Gentex Corporation Vehicle accessory microphone
US7616768B2 (en) 2001-02-14 2009-11-10 Gentex Corporation Vehicle accessory microphone having mechanism for reducing line-induced noise
US8682005B2 (en) 1999-11-19 2014-03-25 Gentex Corporation Vehicle accessory microphone

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2650466A1 (fr) * 1989-07-18 1991-02-01 Messerschmitt Boelkow Blohm Microphone de detection et de localisation de sources sonores
WO2001037519A2 (en) 1999-11-19 2001-05-25 Gentex Corporation Vehicle accessory microphone
EP1230739A2 (en) * 1999-11-19 2002-08-14 Gentex Corporation Vehicle accessory microphone
EP1230739A4 (en) * 1999-11-19 2007-09-26 Gentex Corp ACCESSORY MICROPHONE OF VEHICLE
US8224012B2 (en) 1999-11-19 2012-07-17 Gentex Corporation Vehicle accessory microphone
US8682005B2 (en) 1999-11-19 2014-03-25 Gentex Corporation Vehicle accessory microphone
US7447320B2 (en) 2001-02-14 2008-11-04 Gentex Corporation Vehicle accessory microphone
US7616768B2 (en) 2001-02-14 2009-11-10 Gentex Corporation Vehicle accessory microphone having mechanism for reducing line-induced noise

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