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GB996579A - Improvements in directional sound-receiving apparatus - Google Patents

Improvements in directional sound-receiving apparatus

Info

Publication number
GB996579A
GB996579A GB18945/62A GB1894562A GB996579A GB 996579 A GB996579 A GB 996579A GB 18945/62 A GB18945/62 A GB 18945/62A GB 1894562 A GB1894562 A GB 1894562A GB 996579 A GB996579 A GB 996579A
Authority
GB
United Kingdom
Prior art keywords
transducer
treble
bass
directional sound
acting
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
GB18945/62A
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.)
AKG Acoustics GmbH
Original Assignee
AKG Akustische und Kino Geraete 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 AKG Akustische und Kino Geraete GmbH filed Critical AKG Akustische und Kino Geraete GmbH
Publication of GB996579A publication Critical patent/GB996579A/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
    • 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

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)

Abstract

996,579. Microphones. AKUSTISCHE UND KINO-GERATE G.m.b.H. May 16, 1962 [May 17, 1961], No. 18945/62. Headings H4J and H4R. A directional sound transducer comprises two condenser microphones one of small sound detour acting as a treble transducer the other of relatively larger sound detour acting as a bass transducer, the bass transducer, being omnidirectional at high frequencies, is connected to the treble transducer by a low pass filter. In the described embodiment, Fig. 4, the bass transducer 1 is connected via a resistance R1 to the treble transducer 2 and the input to the amplifier, the resistor R1, the capacitance of the treble transducer, and the stray capacitance of the amplifier input forming an R.C. low pass filter for the bass transducer output.
GB18945/62A 1961-05-17 1962-05-16 Improvements in directional sound-receiving apparatus Expired GB996579A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT387861A AT225767B (en) 1961-05-17 1961-05-17 Sound receiver with directional effect

Publications (1)

Publication Number Publication Date
GB996579A true GB996579A (en) 1965-06-30

Family

ID=3556657

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18945/62A Expired GB996579A (en) 1961-05-17 1962-05-16 Improvements in directional sound-receiving apparatus

Country Status (3)

Country Link
US (1) US3261915A (en)
AT (1) AT225767B (en)
GB (1) GB996579A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3777079A (en) * 1971-10-21 1973-12-04 Willco Gmbh Directional microphone for head mounted midget hearing aids
US3770911A (en) * 1972-07-21 1973-11-06 Industrial Research Prod Inc Hearing aid system
AT360600B (en) * 1979-03-22 1981-01-26 Akg Akustische Kino Geraete ALIGNMENT MICROPHONE
EP2495581B1 (en) 2011-03-04 2017-03-22 BlackBerry Limited Human audible localization for sound emitting devices

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1711529A (en) * 1923-05-14 1929-05-07 Signal Ges Mit Beschraenkter H Multiple-range sound-transmitting system
GB721976A (en) * 1952-08-11 1955-01-19 Ferguson Radio Corp Improvements in and relating to sound reproducing apparatus
US2898405A (en) * 1955-07-13 1959-08-04 George H Eck Listening device
DE1082298B (en) * 1957-04-13 1960-05-25 Rudolf Goerike Dr Small condenser microphone

Also Published As

Publication number Publication date
US3261915A (en) 1966-07-19
AT225767B (en) 1963-02-11

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