FR673498A - Improvements to sound diffusion devices - Google Patents

Improvements to sound diffusion devices

Info

Publication number
FR673498A
FR673498A FR673498DA FR673498A FR 673498 A FR673498 A FR 673498A FR 673498D A FR673498D A FR 673498DA FR 673498 A FR673498 A FR 673498A
Authority
FR
France
Prior art keywords
diffusion devices
sound diffusion
sound
devices
diffusion
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
Other languages
French (fr)
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.)
Victor Talking Machine Co
Original Assignee
Victor Talking Machine Co
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 Victor Talking Machine Co filed Critical Victor Talking Machine Co
Application granted granted Critical
Publication of FR673498A publication Critical patent/FR673498A/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
    • H04R1/22—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
    • 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 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2807—Enclosures comprising vibrating or resonating arrangements
    • H04R1/2861—Enclosures comprising vibrating or resonating arrangements using a back-loaded horn
    • H04R1/2865—Enclosures comprising vibrating or resonating arrangements using a back-loaded horn for loudspeaker transducers

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
FR673498D 1928-04-06 1929-04-17 Improvements to sound diffusion devices Expired FR673498A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US267968A US1943499A (en) 1928-04-06 1928-04-06 Sound amplifier

Publications (1)

Publication Number Publication Date
FR673498A true FR673498A (en) 1930-01-15

Family

ID=23020883

Family Applications (1)

Application Number Title Priority Date Filing Date
FR673498D Expired FR673498A (en) 1928-04-06 1929-04-17 Improvements to sound diffusion devices

Country Status (3)

Country Link
US (1) US1943499A (en)
FR (1) FR673498A (en)
GB (1) GB309162A (en)

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE864697C (en) * 1940-07-26 1953-01-26 Klangfilm Gmbh Loudspeaker with funnel
DE748718C (en) * 1940-11-07 1945-01-10 Arrangement for operating several loudspeakers that reproduce separate frequency ranges with overlapping
US2534040A (en) * 1947-04-21 1950-12-12 Radio Television Inst Inc Multiple section diaphragm loud-speaker
US2642947A (en) * 1948-12-02 1953-06-23 Stephen L Heidrich Acoustic device with an inverted horn having a throat vented to the atmosphere
DE971730C (en) * 1952-04-27 1959-03-19 Philips Patentverwaltung Omnidirectional speakers
US2869668A (en) * 1957-01-23 1959-01-20 Arthur Blumenfeld Plural drive loudspeaker
US2949163A (en) * 1957-05-06 1960-08-16 Soundolier Inc Loudspeaker baffle assembly
US3388218A (en) * 1964-08-13 1968-06-11 Hurvitz Hyman Random directivity loudspeaker
US3477540A (en) * 1966-01-03 1969-11-11 Patron Alfonso R Speaker system
US3687221A (en) * 1971-03-08 1972-08-29 Michel Paul Rene Bonnard Sound reproduction acoustic enclosure
US3842203A (en) * 1972-06-30 1974-10-15 J Weisberg Public address system with horn speakers arrayed around and facing inward toward a common point
US3964571A (en) * 1975-04-01 1976-06-22 Peter Garland Snell Acoustic system
IT1086464B (en) * 1977-09-06 1985-05-28 Selmin Sas METHOD AND DEVICES FOR OMNIDIRECTIONAL IRRADIATION OF SOUND WAVES
GB1598310A (en) * 1977-11-04 1981-09-16 Andrews A J Bass sound projection system
US4158400A (en) * 1978-05-15 1979-06-19 Vice Charles L Sound reproducing system
US4214645A (en) * 1978-11-09 1980-07-29 Avid Corporation Method of and means for loudspeaker sound wave distribution
US4310065A (en) * 1979-05-11 1982-01-12 Chromalloy Electronics Corporation Radial horn
DE3204702A1 (en) * 1982-02-11 1983-08-18 Herwig 4905 Spenge Rabeneck Exponential horn for loudspeaker systems
US4908601A (en) * 1987-07-27 1990-03-13 Whelen Technologies, Inc. Loud speaker with horizontal radiation pattern
GB2213677A (en) * 1987-12-09 1989-08-16 Canon Kk Sound output system
DE4108409A1 (en) * 1990-12-19 1991-08-22 Helmut Pluemacher Acoustic coupler for loudspeaker - uses ring shaped horn structure formed from two circular shells standing back to back
FR2671445B1 (en) * 1991-01-04 1995-07-28 Majorcom OMNIDIRECTIONAL SOUND SYSTEM.
GB2269960B (en) * 1992-08-20 1996-03-27 Canon Audio Ltd Sound output system
JP3186584B2 (en) * 1996-05-31 2001-07-11 株式会社村田製作所 Speaker
WO2000069213A2 (en) * 1999-05-07 2000-11-16 Gsbs Development Corporation Sounders for fire alarm systems
JP4123046B2 (en) * 2003-05-13 2008-07-23 ソニー株式会社 Speaker device
DE102007019450A1 (en) * 2007-04-10 2008-10-16 Michael Schwahn Omnidirectional radiating and receiving horn has two volume bodies mounted one above other at distance from each other, where lower volume body has tubular horn neck
DE102010021879A1 (en) 2010-05-28 2011-12-01 Frank Held Loudspeaker device with circumferential, funnel-shaped sound outlet opening
US9208768B2 (en) * 2012-10-26 2015-12-08 Emanuel LaCarrubba Acoustical transverse horn for controlled horizontal and vertical sound dispersion
USD895576S1 (en) * 2019-03-13 2020-09-08 Dynaudio Holding (A/S) Baffle for loudspeaker
CN109946952B (en) * 2019-04-18 2024-04-12 浙江理工大学 Air-blowing suspension type alarm clock
TWI773950B (en) * 2019-12-12 2022-08-11 緯創資通股份有限公司 Inverter vent and loudspeaker

Also Published As

Publication number Publication date
GB309162A (en) 1930-05-08
US1943499A (en) 1934-01-16

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