NL174008B - HORN FOR ACHIEVING AN IMPEDANCE TRANSFORMATION BETWEEN AN ACOUSTIC CONVERTER AND AN ACOUSTIC TRANSMISSION MEDIUM. - Google Patents

HORN FOR ACHIEVING AN IMPEDANCE TRANSFORMATION BETWEEN AN ACOUSTIC CONVERTER AND AN ACOUSTIC TRANSMISSION MEDIUM.

Info

Publication number
NL174008B
NL174008B NLAANVRAGE7400200,A NL7400200A NL174008B NL 174008 B NL174008 B NL 174008B NL 7400200 A NL7400200 A NL 7400200A NL 174008 B NL174008 B NL 174008B
Authority
NL
Netherlands
Prior art keywords
acoustic
horn
achieving
transmission medium
impedance transformation
Prior art date
Application number
NLAANVRAGE7400200,A
Other languages
Dutch (nl)
Other versions
NL174008C (en
NL7400200A (en
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Publication of NL7400200A publication Critical patent/NL7400200A/xx
Publication of NL174008B publication Critical patent/NL174008B/en
Application granted granted Critical
Publication of NL174008C publication Critical patent/NL174008C/en

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/18—Methods or devices for transmitting, conducting or directing sound
    • G10K11/26—Sound-focusing or directing, e.g. scanning
    • G10K11/28—Sound-focusing or directing, e.g. scanning using reflection, e.g. parabolic reflectors
    • 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)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Signal Processing (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
NLAANVRAGE7400200,A 1973-01-10 1974-01-07 HORN FOR ACHIEVING AN IMPEDANCE TRANSFORMATION BETWEEN AN ACOUSTIC CONVERTER AND AN ACOUSTIC TRANSMISSION MEDIUM. NL174008C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00322601A US3852529A (en) 1973-01-10 1973-01-10 Acoustic horn

Publications (3)

Publication Number Publication Date
NL7400200A NL7400200A (en) 1974-07-12
NL174008B true NL174008B (en) 1983-11-01
NL174008C NL174008C (en) 1984-04-02

Family

ID=23255593

Family Applications (1)

Application Number Title Priority Date Filing Date
NLAANVRAGE7400200,A NL174008C (en) 1973-01-10 1974-01-07 HORN FOR ACHIEVING AN IMPEDANCE TRANSFORMATION BETWEEN AN ACOUSTIC CONVERTER AND AN ACOUSTIC TRANSMISSION MEDIUM.

Country Status (7)

Country Link
US (1) US3852529A (en)
JP (1) JPS569834B2 (en)
CA (1) CA988434A (en)
DE (1) DE2401132C3 (en)
FR (1) FR2213552B1 (en)
IT (1) IT1008672B (en)
NL (1) NL174008C (en)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2547759C3 (en) * 1975-10-24 1985-08-08 Endress U. Hauser Gmbh U. Co, 7867 Maulburg Sonic echo sounder for level measurement
US4050541A (en) * 1976-04-21 1977-09-27 Altec Corporation Acoustical transformer for horn-type loudspeaker
GB1592246A (en) * 1976-09-23 1981-07-01 Isaac T P Sound projection system
JPS547783Y2 (en) * 1977-01-29 1979-04-11
JPS53148425A (en) * 1977-05-31 1978-12-25 Kenkichi Tsukamoto Electric sound transducer
US4157741A (en) * 1978-08-16 1979-06-12 Goldwater Alan J Phase plug
JPS5567293A (en) * 1978-11-15 1980-05-21 Toshiba Corp Horn type loudspeaker
US4310065A (en) * 1979-05-11 1982-01-12 Chromalloy Electronics Corporation Radial horn
US4685532A (en) * 1986-02-21 1987-08-11 Electro-Voice, Inc. Constant directivity loudspeaker horn
US4836327A (en) * 1986-11-12 1989-06-06 Turbosound Limited Sound reinforcement enclosure employing cone loudspeaker with annular central loading member and coaxially mounted compression driver
JPS6316797A (en) * 1987-06-19 1988-01-23 Pioneer Electronic Corp Horn
WO1991018486A1 (en) * 1990-05-14 1991-11-28 Commonwealth Scientific And Industrial Research Organisation A coupling device
US5357063A (en) * 1993-07-12 1994-10-18 Battelle Memorial Institute Method and apparatus for acoustic energy identification of objects buried in soil
US6516076B1 (en) 2000-07-12 2003-02-04 Atlas Sound, L.P. Modular horn loudspeaker
US7177437B1 (en) 2001-10-19 2007-02-13 Duckworth Holding, Llc C/O Osc Audio Products, Inc. Multiple aperture diffraction device
US8718310B2 (en) 2001-10-19 2014-05-06 Qsc Holdings, Inc. Multiple aperture speaker assembly
US7095868B2 (en) * 2003-02-10 2006-08-22 Earl Geddes Phase plug with optimum aperture shapes
US7686129B2 (en) * 2007-08-30 2010-03-30 Klipsch Llc Acoustic horn having internally raised geometric shapes
US8130994B2 (en) * 2008-06-17 2012-03-06 Harman International Industries, Incorporated Waveguide
CN104717586B (en) 2008-08-14 2019-06-11 哈曼国际工业有限公司 Phase plug and acoustic lens for direct radiator type loudspeaker
US10261167B2 (en) 2014-09-22 2019-04-16 Symbol Technologies, Llc Co-located locationing technologies
USD783577S1 (en) * 2015-09-16 2017-04-11 Stillwater Designs And Audio, Inc. Subwoofer

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2001089A (en) * 1933-04-07 1935-05-14 Bell Telephone Labor Inc Horn
US2109012A (en) * 1936-02-27 1938-02-22 Lawrance Athol Ernest Neville Acoustical device
US2107757A (en) * 1936-02-29 1938-02-08 Bell Telephone Labor Inc Acoustic device
BE424560A (en) * 1936-11-13
US2537141A (en) * 1945-06-15 1951-01-09 Paul W Klipsch Loud-speaker horn
JPS492195U (en) * 1972-04-07 1974-01-10

Also Published As

Publication number Publication date
FR2213552B1 (en) 1978-01-06
IT1008672B (en) 1976-11-30
JPS569834B2 (en) 1981-03-04
FR2213552A1 (en) 1974-08-02
DE2401132C3 (en) 1980-10-02
DE2401132B2 (en) 1980-01-31
CA988434A (en) 1976-05-04
US3852529A (en) 1974-12-03
NL174008C (en) 1984-04-02
DE2401132A1 (en) 1974-07-18
NL7400200A (en) 1974-07-12
JPS49104619A (en) 1974-10-03

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Legal Events

Date Code Title Description
V1 Lapsed because of non-payment of the annual fee