DE69635286D1 - Digitaler Pulsbreiten-Modulationsgenerator - Google Patents

Digitaler Pulsbreiten-Modulationsgenerator

Info

Publication number
DE69635286D1
DE69635286D1 DE69635286T DE69635286T DE69635286D1 DE 69635286 D1 DE69635286 D1 DE 69635286D1 DE 69635286 T DE69635286 T DE 69635286T DE 69635286 T DE69635286 T DE 69635286T DE 69635286 D1 DE69635286 D1 DE 69635286D1
Authority
DE
Germany
Prior art keywords
bit
input
digital
signal
receive
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
DE69635286T
Other languages
English (en)
Inventor
Anthony Hooley
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.)
1 Ltd
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 DE69635286D1 publication Critical patent/DE69635286D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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; DEAF-AID SETS; 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; 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 
    • H04R1/227—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; 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
    • H04R1/40—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; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/12—Circuits for transducers, loudspeakers or microphones 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; DEAF-AID SETS; 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; DEAF-AID SETS; 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; DEAF-AID SETS; 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)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Amplifiers (AREA)
  • Stereophonic System (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Details Of Television Scanning (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Dc-Dc Converters (AREA)
DE69635286T 1995-03-31 1996-03-27 Digitaler Pulsbreiten-Modulationsgenerator Expired - Lifetime DE69635286D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB9506725.2A GB9506725D0 (en) 1995-03-31 1995-03-31 Improvements in or relating to loudspeakers

Publications (1)

Publication Number Publication Date
DE69635286D1 true DE69635286D1 (de) 2006-02-23

Family

ID=10772301

Family Applications (2)

Application Number Title Priority Date Filing Date
DE69618183T Expired - Fee Related DE69618183T2 (de) 1995-03-31 1996-03-27 Massnahmen zur verbesserung von lautsprechern
DE69635286T Expired - Lifetime DE69635286D1 (de) 1995-03-31 1996-03-27 Digitaler Pulsbreiten-Modulationsgenerator

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE69618183T Expired - Fee Related DE69618183T2 (de) 1995-03-31 1996-03-27 Massnahmen zur verbesserung von lautsprechern

Country Status (10)

Country Link
US (3) US6373955B1 (de)
EP (2) EP1122973B1 (de)
JP (1) JP3492698B2 (de)
CN (2) CN1575037A (de)
AT (2) ATE211345T1 (de)
AU (1) AU5117096A (de)
DE (2) DE69618183T2 (de)
DK (1) DK0818122T3 (de)
GB (1) GB9506725D0 (de)
WO (1) WO1996031086A1 (de)

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US6373955B1 (en) 2002-04-16
JP3492698B2 (ja) 2004-02-03
EP1122973B1 (de) 2005-10-12
EP1122973A2 (de) 2001-08-08
EP0818122A1 (de) 1998-01-14
ATE306801T1 (de) 2005-10-15
US7215788B2 (en) 2007-05-08
US20010043652A1 (en) 2001-11-22
GB9506725D0 (en) 1995-05-24
DK0818122T3 (da) 2002-03-18
ATE211345T1 (de) 2002-01-15
AU5117096A (en) 1996-10-16
CN1180470A (zh) 1998-04-29
DE69618183D1 (de) 2002-01-31
US20060049889A1 (en) 2006-03-09
DE69618183T2 (de) 2002-08-14
CN1147207C (zh) 2004-04-21
WO1996031086A1 (en) 1996-10-03
EP1122973A3 (de) 2002-09-04
EP0818122B1 (de) 2001-12-19
JPH11502981A (ja) 1999-03-09
US6967541B2 (en) 2005-11-22
CN1575037A (zh) 2005-02-02

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