BRPI0510020A - tecnologia de linha de transmissão de áudio embutido em circuito fechado - Google Patents

tecnologia de linha de transmissão de áudio embutido em circuito fechado

Info

Publication number
BRPI0510020A
BRPI0510020A BRPI0510020-8A BRPI0510020A BRPI0510020A BR PI0510020 A BRPI0510020 A BR PI0510020A BR PI0510020 A BRPI0510020 A BR PI0510020A BR PI0510020 A BRPI0510020 A BR PI0510020A
Authority
BR
Brazil
Prior art keywords
transmission line
closure
acoustic impedance
standing waves
driver
Prior art date
Application number
BRPI0510020-8A
Other languages
English (en)
Inventor
Jan Plummer
Original Assignee
Jan Plummer
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 Jan Plummer filed Critical Jan Plummer
Publication of BRPI0510020A publication Critical patent/BRPI0510020A/pt

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 
    • H04R1/28—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
    • H04R1/2853—Enclosures comprising vibrating or resonating arrangements using an acoustic labyrinth or a transmission line
    • H04R1/2857—Enclosures comprising vibrating or resonating arrangements using an acoustic labyrinth or a transmission line for loudspeaker transducers
    • 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
    • H04R1/2815—Enclosures comprising vibrating or resonating arrangements of the bass reflex type
    • H04R1/2819—Enclosures comprising vibrating or resonating arrangements of the bass reflex type for loudspeaker transducers
    • 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
    • H04R1/283—Enclosures comprising vibrating or resonating arrangements using a passive diaphragm
    • H04R1/2834—Enclosures comprising vibrating or resonating arrangements using a passive diaphragm for loudspeaker transducers
    • 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
    • H04R1/2838—Enclosures comprising vibrating or resonating arrangements of the bandpass type
    • H04R1/2842—Enclosures comprising vibrating or resonating arrangements of the bandpass type for loudspeaker transducers
    • 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

  • 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)
  • Circuit For Audible Band Transducer (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

TECNOLOGIA DE LINHA DE TRANSMISSãO DE áUDIO EMBUTIDO EM CIRCUITO FECHADO. é fornecido um encerramento adaptando impedância acústica tendo um acionador carregado em uma câmara amortecendo a garganta/boca de uma linha de transmissão de circuito fechado. A linha de transmissão consiste de um elemento de terminação, paredes de encerramento externa e interna, revestimento de alta densidade e área de garganta/boca. A linha de transmissão elimina as ondas estacionárias randómicas internas enquanto fornece ondas estacionárias de freqüência variável que através de superposição das ondas compensam a perda de massa-aceleração da extremidade alta da saída de acionador enquanto amortece a ressonância do acionador. A aplicação alternativa do encerramento adaptando impedância acústica é aquele de carregar por compressão o acionador diretamente na linha de transmissão de circuito fechado e usar um filtro de baixa passagem acústica para transladar a sida em baixas freqüências somente através de um orifício. Ambas as aplicações do encerramento de adaptação de impedância acústica são para assegurar que o diafragma dos acionadores está livre de ondas estacionárias internas disruptivas, apropriadamente carregado em todas as freqüências e não facilmente afetado por reflexões ambientes.
BRPI0510020-8A 2004-05-12 2005-05-12 tecnologia de linha de transmissão de áudio embutido em circuito fechado BRPI0510020A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/709,538 US7207413B2 (en) 2003-06-02 2004-05-12 Closed loop embedded audio transmission line technology for loudspeaker enclosures and systems
PCT/US2005/016696 WO2005112697A2 (en) 2004-05-12 2005-05-12 Closed loop embedded audio transmission line technology

Publications (1)

Publication Number Publication Date
BRPI0510020A true BRPI0510020A (pt) 2007-09-25

Family

ID=35428785

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0510020-8A BRPI0510020A (pt) 2004-05-12 2005-05-12 tecnologia de linha de transmissão de áudio embutido em circuito fechado

Country Status (8)

Country Link
US (2) US7207413B2 (pt)
EP (1) EP1761141A4 (pt)
JP (1) JP4948397B2 (pt)
CN (1) CN101031222B (pt)
AU (1) AU2005244853B2 (pt)
BR (1) BRPI0510020A (pt)
RU (1) RU2377740C2 (pt)
WO (1) WO2005112697A2 (pt)

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Also Published As

Publication number Publication date
US20070256888A1 (en) 2007-11-08
CN101031222B (zh) 2012-04-18
US7207413B2 (en) 2007-04-24
RU2377740C2 (ru) 2009-12-27
JP2007537679A (ja) 2007-12-20
WO2005112697A2 (en) 2005-12-01
US20040251079A1 (en) 2004-12-16
AU2005244853A1 (en) 2005-12-01
EP1761141A4 (en) 2009-05-20
JP4948397B2 (ja) 2012-06-06
AU2005244853B2 (en) 2011-01-06
CN101031222A (zh) 2007-09-05
EP1761141A2 (en) 2007-03-14
RU2006143331A (ru) 2008-06-20
WO2005112697A3 (en) 2006-11-16

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE AS 6A E 7A ANUIDADES.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2158 DE 15/05/2012.