DK0818122T3 - Forbedringer af eller vedrørende højttalere - Google Patents

Forbedringer af eller vedrørende højttalere

Info

Publication number
DK0818122T3
DK0818122T3 DK96907605T DK96907605T DK0818122T3 DK 0818122 T3 DK0818122 T3 DK 0818122T3 DK 96907605 T DK96907605 T DK 96907605T DK 96907605 T DK96907605 T DK 96907605T DK 0818122 T3 DK0818122 T3 DK 0818122T3
Authority
DK
Denmark
Prior art keywords
bit
input
digital
signal
receive
Prior art date
Application number
DK96907605T
Other languages
English (en)
Inventor
Anthony Hooley
Original Assignee
1 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
Application filed by 1 Ltd filed Critical 1 Ltd
Application granted granted Critical
Publication of DK0818122T3 publication Critical patent/DK0818122T3/da

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K7/00—Modulating pulses with a continuously-variable modulating signal
    • H03K7/08—Duration or width modulation ; Duty cycle modulation
    • 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
    • H04R1/005—Details of transducers, loudspeakers or microphones using digitally weighted transducing elements
    • 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
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/227—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only  using transducers reproducing the same frequency band
    • 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
    • H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
    • H04R1/403—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers loud-speakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers
    • H04R3/12—Circuits for transducers for distributing signals to two or more loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2203/00—Details of circuits for transducers, loudspeakers or microphones covered by H04R3/00 but not provided for in any of its subgroups
    • H04R2203/12—Beamforming aspects for stereophonic sound reproduction with loudspeaker arrays
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2430/00—Signal processing covered by H04R, not provided for in its groups
    • H04R2430/20—Processing of the output signals of the acoustic transducers of an array for obtaining a desired directivity characteristic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R27/00—Public address systems

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • General Health & Medical Sciences (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Analogue/Digital Conversion (AREA)
  • Stereophonic System (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Amplifiers (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Dc-Dc Converters (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Details Of Television Scanning (AREA)
DK96907605T 1995-03-31 1996-03-27 Forbedringer af eller vedrørende højttalere DK0818122T3 (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9506725.2A GB9506725D0 (en) 1995-03-31 1995-03-31 Improvements in or relating to loudspeakers
PCT/GB1996/000736 WO1996031086A1 (en) 1995-03-31 1996-03-27 Improvements in or relating to loudspeakers

Publications (1)

Publication Number Publication Date
DK0818122T3 true DK0818122T3 (da) 2002-03-18

Family

ID=10772301

Family Applications (1)

Application Number Title Priority Date Filing Date
DK96907605T DK0818122T3 (da) 1995-03-31 1996-03-27 Forbedringer af eller vedrørende højttalere

Country Status (10)

Country Link
US (3) US6373955B1 (da)
EP (2) EP0818122B1 (da)
JP (1) JP3492698B2 (da)
CN (2) CN1575037A (da)
AT (2) ATE211345T1 (da)
AU (1) AU5117096A (da)
DE (2) DE69635286D1 (da)
DK (1) DK0818122T3 (da)
GB (1) GB9506725D0 (da)
WO (1) WO1996031086A1 (da)

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CN1575037A (zh) 2005-02-02
ATE306801T1 (de) 2005-10-15
DE69635286D1 (de) 2006-02-23
DE69618183T2 (de) 2002-08-14
US6373955B1 (en) 2002-04-16
CN1147207C (zh) 2004-04-21
GB9506725D0 (en) 1995-05-24
DE69618183D1 (de) 2002-01-31
CN1180470A (zh) 1998-04-29
US7215788B2 (en) 2007-05-08
EP0818122A1 (en) 1998-01-14
JP3492698B2 (ja) 2004-02-03
AU5117096A (en) 1996-10-16
EP1122973A2 (en) 2001-08-08
EP1122973B1 (en) 2005-10-12
US6967541B2 (en) 2005-11-22
US20060049889A1 (en) 2006-03-09
WO1996031086A1 (en) 1996-10-03
EP0818122B1 (en) 2001-12-19
EP1122973A3 (en) 2002-09-04
ATE211345T1 (de) 2002-01-15
US20010043652A1 (en) 2001-11-22
JPH11502981A (ja) 1999-03-09

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