NO803305L - Reflekstrakthoeyttaler med vanntettende anordning. - Google Patents

Reflekstrakthoeyttaler med vanntettende anordning.

Info

Publication number
NO803305L
NO803305L NO803305A NO803305A NO803305L NO 803305 L NO803305 L NO 803305L NO 803305 A NO803305 A NO 803305A NO 803305 A NO803305 A NO 803305A NO 803305 L NO803305 L NO 803305L
Authority
NO
Norway
Prior art keywords
speeches
waterproofing device
reflector
strength
reflector strength
Prior art date
Application number
NO803305A
Other languages
English (en)
Other versions
NO155870C (no
NO155870B (no
Inventor
Yoshishige Shintaku
Original Assignee
Ibuki Kogyo Co 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 Ibuki Kogyo Co Ltd filed Critical Ibuki Kogyo Co Ltd
Publication of NO803305L publication Critical patent/NO803305L/no
Publication of NO155870B publication Critical patent/NO155870B/no
Publication of NO155870C publication Critical patent/NO155870C/no

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
    • H04R1/44—Special adaptations for subaqueous use, e.g. for hydrophone
    • 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
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/30—Combinations of transducers with horns, e.g. with mechanical matching means, i.e. front-loaded horns

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
NO803305A 1980-05-28 1980-11-04 Reflekstrakthoeyttaler med lydtrakttettende anordning. NO155870C (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7100980A JPS56166698A (en) 1980-05-28 1980-05-28 Reflex horn speaker with waterproofing device

Publications (3)

Publication Number Publication Date
NO803305L true NO803305L (no) 1981-11-30
NO155870B NO155870B (no) 1987-03-02
NO155870C NO155870C (no) 1987-06-10

Family

ID=13448068

Family Applications (1)

Application Number Title Priority Date Filing Date
NO803305A NO155870C (no) 1980-05-28 1980-11-04 Reflekstrakthoeyttaler med lydtrakttettende anordning.

Country Status (7)

Country Link
US (1) US4385211A (no)
JP (1) JPS56166698A (no)
DE (1) DE3047073C2 (no)
GB (1) GB2078056B (no)
NL (1) NL183558C (no)
NO (1) NO155870C (no)
SE (1) SE437103B (no)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4982436A (en) * 1988-12-05 1991-01-01 Gai-Tronics Dual horn folded soundpath loudspeaker
KR100540981B1 (ko) * 2003-03-07 2006-01-11 송종석 혼스피커
JP2005141079A (ja) * 2003-11-07 2005-06-02 Patoraito:Kk 音声信号報知装置およびそれを備えた警光灯
US10261167B2 (en) * 2014-09-22 2019-04-16 Symbol Technologies, Llc Co-located locationing technologies
CN111447538B (zh) * 2020-04-14 2021-05-07 吉林师范大学 对外汉语翻译机的辅助扩音装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2290968A (en) * 1939-11-03 1942-07-28 Lorenz C Ag Loud-speaker
US2981359A (en) * 1958-03-05 1961-04-25 Ling Temco Electronics Inc Reflex horn loudspeaker
US3260990A (en) * 1962-01-03 1966-07-12 Dynamics Corp America Electroacoustic transducer
US4071111A (en) * 1976-04-28 1978-01-31 Acoustic Fiber Sound Systems, Inc. Weatherproof loudspeaker assembly and method of making same

Also Published As

Publication number Publication date
NO155870C (no) 1987-06-10
DE3047073A1 (de) 1981-12-03
JPS56166698A (en) 1981-12-21
JPS6250039B2 (no) 1987-10-22
NL183558B (nl) 1988-06-16
GB2078056A (en) 1981-12-23
GB2078056B (en) 1984-08-30
NL8006220A (nl) 1982-01-04
US4385211A (en) 1983-05-24
NO155870B (no) 1987-03-02
SE437103B (sv) 1985-02-04
SE8008099L (sv) 1981-11-29
NL183558C (nl) 1988-11-16
DE3047073C2 (de) 1983-12-29

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