ES2050178T3 - SPEAKER SYSTEM. - Google Patents

SPEAKER SYSTEM.

Info

Publication number
ES2050178T3
ES2050178T3 ES89106833T ES89106833T ES2050178T3 ES 2050178 T3 ES2050178 T3 ES 2050178T3 ES 89106833 T ES89106833 T ES 89106833T ES 89106833 T ES89106833 T ES 89106833T ES 2050178 T3 ES2050178 T3 ES 2050178T3
Authority
ES
Spain
Prior art keywords
acoustic path
sound
diaphragm
speaker system
absorbing
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 - Lifetime
Application number
ES89106833T
Other languages
Spanish (es)
Inventor
Tadashi Tamura
Shuji Saiki
Kazue Sato
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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
Priority claimed from JP63106355A external-priority patent/JPH0775431B2/en
Priority claimed from JP63109343A external-priority patent/JPH0775432B2/en
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Application granted granted Critical
Publication of ES2050178T3 publication Critical patent/ES2050178T3/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H04R1/32—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

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)

Abstract

SISTEMA DE ALTAVOZ QUE TIENE UNA UNIDAD DE ALTAVOZ CON UN DIAFRAGMA Y UNA TRAYECTORIA ACUSTICA (5) SITUADA EN LA PARTE FRONTAL DEL DIAFRAGMA PARA GUIAR LAS ONDAS SONORAS EMITIDAS POR EL DIAFRAGMA. LA TRAYECTORIA ACUSTICA (5) ESTA DEFINIDA POR UN ELEMENTO ABSORBENTE DE SONIDO (4). EL ESPACIO EN LA TRAYECTORIA ACUSTICA (5) Y ELEMENTO ABSORBENTE DE SONIDO (4) ESTA SEPARADO POR UN ELEMENTO DE PARTICION (6) QUE ESTA DISPUESTO DE TAL FORMA QUE AL MENOS UNA PARTE DEL ELEMENTO ABSORBENTE DE SONIDO (4) SE HALLA EXPUESTA AL ESPECIO EN LA TRAYECTORIA ACUSTICA (5). ESTO ELIMINA MAXIMOS Y MINIMOS DE RESONANCIA DETERMINADOS POR LA LONGITUD DE LA TRAYECTORIA ACUSTICA (5), PUDIENDOSE OBTENER UN AMPLIO ABANICO DE CARATERISTICAS DE FRECUENCIA DE PRESION DE SONIDO PLANO HASTA LA REGION DE LOS AGUDOS.SPEAKER SYSTEM THAT HAS A SPEAKER UNIT WITH A DIAPHRAGM AND AN ACOUSTIC PATH (5) LOCATED ON THE FRONT OF THE DIAPHRAGM TO GUIDE THE SOUND WAVES EMITTED BY THE DIAPHRAGM. THE ACOUSTIC PATH (5) IS DEFINED BY AN ABSORBING SOUND ELEMENT (4). THE SPACE IN THE ACOUSTIC PATH (5) AND SOUND ABSORBING ELEMENT (4) IS SEPARATED BY A PARTITION ELEMENT (6) WHICH IS DISPOSED IN SUCH A WAY THAT AT LEAST A PART OF THE SOUND ABSORBING ELEMENT (4) IS EXPOSED TO THE SPECIAL ON THE ACOUSTIC PATH (5). THIS ELIMINATES MAXIMUMS AND MINIMUMS OF RESONANCE DETERMINED BY THE LENGTH OF THE ACOUSTIC PATH (5), BEING ABLE TO OBTAIN A WIDE FAN OF CHARACTERISTICS OF FLAT SOUND PRESSURE FREQUENCY UP TO THE REGION OF THE TREBLE.

ES89106833T 1988-04-28 1989-04-17 SPEAKER SYSTEM. Expired - Lifetime ES2050178T3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP63106355A JPH0775431B2 (en) 1988-04-28 1988-04-28 Speaker system
JP63109343A JPH0775432B2 (en) 1988-05-02 1988-05-02 Speaker system

Publications (1)

Publication Number Publication Date
ES2050178T3 true ES2050178T3 (en) 1994-05-16

Family

ID=26446466

Family Applications (1)

Application Number Title Priority Date Filing Date
ES89106833T Expired - Lifetime ES2050178T3 (en) 1988-04-28 1989-04-17 SPEAKER SYSTEM.

Country Status (5)

Country Link
EP (1) EP0339425B1 (en)
BR (1) BR8901979A (en)
DK (1) DK170195B1 (en)
ES (1) ES2050178T3 (en)
MX (1) MX171080B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2325586B (en) * 1995-03-14 1999-01-13 Matsushita Electric Ind Co Ltd Speaker system
GB2302231B (en) * 1995-03-14 1999-01-13 Matsushita Electric Ind Co Ltd Speaker system
DE19611999C1 (en) * 1996-03-27 1997-07-17 Henkel Kgaa Alkoxylated fatty acid alkyl ester preparation useful e.g. in dishwashing
US6008391A (en) * 1997-03-17 1999-12-28 Henkel Kommanditgesellschaft Auf Aktien Process for preparing alkoxylated fatty acid alkyl esters
DE19909272A1 (en) 1999-03-03 2000-09-07 Cognis Deutschland Gmbh Process for the production of alkoxylated nonionic surfactants
GB2464512B (en) * 2008-10-16 2012-11-28 Instigate Media Ltd A sound source
US11310587B2 (en) 2019-10-08 2022-04-19 Bose Corporation Horn loudspeakers

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB402600A (en) * 1931-11-27 1933-12-07 Harold Lister Kirke Improvements in or relating to loudspeakers
GB496504A (en) * 1937-06-25 1938-12-01 Murphy Radio Ltd Improvements in loud speakers
GB963853A (en) * 1961-12-29 1964-07-15 Wharfedale Wireless Works Ltd Loudspeakers
DE1537620A1 (en) * 1967-11-14 1969-12-18 Isophon Werke Gmbh Funnel loudspeaker assembly
NZ225001A (en) * 1987-06-16 1990-09-26 Matsushita Electric Ind Co Ltd Loudspeaker: reflected sound waves absorbed

Also Published As

Publication number Publication date
MX171080B (en) 1993-09-29
EP0339425A2 (en) 1989-11-02
EP0339425B1 (en) 1994-03-23
DK204589D0 (en) 1989-04-27
DK204589A (en) 1989-10-29
EP0339425A3 (en) 1990-01-24
DK170195B1 (en) 1995-06-06
BR8901979A (en) 1989-12-05

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