NL84969C - - Google Patents

Info

Publication number
NL84969C
NL84969C NL84969DA NL84969C NL 84969 C NL84969 C NL 84969C NL 84969D A NL84969D A NL 84969DA NL 84969 C NL84969 C NL 84969C
Authority
NL
Netherlands
Application number
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.)
Publication of NL84969C publication Critical patent/NL84969C/xx

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; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—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
    • H04R1/345—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 for loudspeakers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
NL84969D 1950-01-31 NL84969C (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR290349X 1950-01-31

Publications (1)

Publication Number Publication Date
NL84969C true NL84969C (fr)

Family

ID=8887650

Family Applications (1)

Application Number Title Priority Date Filing Date
NL84969D NL84969C (fr) 1950-01-31

Country Status (6)

Country Link
US (1) US2732907A (fr)
CH (1) CH290349A (fr)
DE (1) DE940357C (fr)
FR (2) FR1012676A (fr)
GB (2) GB690889A (fr)
NL (1) NL84969C (fr)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1126928B (de) * 1959-11-20 1962-04-05 August Wilhelm Johan Va Albert Einrichtung zur Abstrahlung von Schallwellen
US3068955A (en) * 1959-11-27 1962-12-18 Albert A W J Van Hedel Device for the radiation of sound waves
US3234501A (en) * 1962-05-07 1966-02-08 Gen Signal Corp Protective casing for ultrasonic transducers
US4357490A (en) * 1980-07-18 1982-11-02 Dickey Baron C High fidelity loudspeaker system for aurally simulating wide frequency range point source of sound
US4564841A (en) * 1981-01-15 1986-01-14 Neidell Norman S Navigational systems using phase encoded angular coordinates
US4421200A (en) * 1981-12-16 1983-12-20 Ferralli Michael W Elliptically shaped transducer enclosure
US4997056A (en) * 1989-01-31 1991-03-05 Riley Michael D Ear-focused acoustic reflector
US5615176A (en) * 1995-12-20 1997-03-25 Lacarrubba; Emanuel Acoustic reflector
USD397118S (en) 1997-04-15 1998-08-18 Keating Stephen D Combined external directional sound dome reflector and deflector for motor vehicle speaker enclosure
US6068080A (en) * 1998-04-13 2000-05-30 Lacarrubba; Emanuel Apparatus for the redistribution of acoustic energy
US6820718B2 (en) * 2002-10-04 2004-11-23 Lacarrubba Emanuel Acoustic reproduction device with improved directional characteristics
US20080123884A1 (en) * 2006-08-22 2008-05-29 David Donenfeld Passive hearing aid device
JP2010268018A (ja) * 2009-05-12 2010-11-25 Sony Corp スピーカー装置及び電子機器
SE536652C2 (sv) 2011-07-15 2014-04-29 Kpo Innovation Ab En akustisk signalgenerator
US10149058B2 (en) 2013-03-15 2018-12-04 Richard O'Polka Portable sound system
WO2014144968A1 (fr) 2013-03-15 2014-09-18 O'polka Richard Système sonore portable
USD740784S1 (en) 2014-03-14 2015-10-13 Richard O'Polka Portable sound device
CN114667739B (zh) * 2019-12-04 2025-07-08 索尼集团公司 扬声器系统和声音输出方法
USD958119S1 (en) * 2021-08-17 2022-07-19 Shenzhen Xunweijia Technology Development Co., Ltd. Microphone stand

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1619981A (en) * 1923-03-14 1927-03-08 Sargeant P Knut Sound magnifier
US1786279A (en) * 1927-03-31 1930-12-23 Rca Corp Reflector
FR41374E (fr) * 1931-08-17 1933-01-07 Perfectionnements aux amplificateurs de sons
US2005300A (en) * 1933-12-15 1935-06-18 Arthur M Pfalzer Baffle for loud speakers
US2239170A (en) * 1939-04-26 1941-04-22 Crosley Corp Radio apparatus
US2643727A (en) * 1950-01-31 1953-06-30 Elipson S A Sound transmitting device with an ellipsoidal reflector

Also Published As

Publication number Publication date
GB690889A (en) 1953-04-29
DE940357C (de) 1956-03-15
FR1012676A (fr) 1952-07-16
GB719969A (en) 1954-12-08
US2732907A (en) 1956-01-31
CH290349A (fr) 1953-04-30
FR61796E (fr) 1955-05-17

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