SG70644A1 - Methods and apparatus for measuring signal level and delay ay multiple sensors - Google Patents

Methods and apparatus for measuring signal level and delay ay multiple sensors

Info

Publication number
SG70644A1
SG70644A1 SG1998001543A SG1998001543A SG70644A1 SG 70644 A1 SG70644 A1 SG 70644A1 SG 1998001543 A SG1998001543 A SG 1998001543A SG 1998001543 A SG1998001543 A SG 1998001543A SG 70644 A1 SG70644 A1 SG 70644A1
Authority
SG
Singapore
Prior art keywords
delay
methods
signal level
measuring signal
multiple sensors
Prior art date
Application number
SG1998001543A
Other languages
English (en)
Inventor
Peter Handel
Jim Rasmusson
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of SG70644A1 publication Critical patent/SG70644A1/en

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/18—Methods or devices for transmitting, conducting or directing sound
    • G10K11/26—Sound-focusing or directing, e.g. scanning
    • G10K11/34—Sound-focusing or directing, e.g. scanning using electrical steering of transducer arrays, e.g. beam steering
    • G10K11/341—Circuits therefor
    • G10K11/345—Circuits therefor using energy switching from one active element to another
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Noise Elimination (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
  • Testing Or Calibration Of Command Recording Devices (AREA)
  • Radar Systems Or Details Thereof (AREA)
SG1998001543A 1997-07-11 1998-06-29 Methods and apparatus for measuring signal level and delay ay multiple sensors SG70644A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/890,768 US6430295B1 (en) 1997-07-11 1997-07-11 Methods and apparatus for measuring signal level and delay at multiple sensors

Publications (1)

Publication Number Publication Date
SG70644A1 true SG70644A1 (en) 2000-02-22

Family

ID=25397124

Family Applications (1)

Application Number Title Priority Date Filing Date
SG1998001543A SG70644A1 (en) 1997-07-11 1998-06-29 Methods and apparatus for measuring signal level and delay ay multiple sensors

Country Status (14)

Country Link
US (1) US6430295B1 (enExample)
EP (1) EP0995188B1 (enExample)
JP (1) JP4082649B2 (enExample)
KR (1) KR100480404B1 (enExample)
CN (1) CN1122963C (enExample)
AU (1) AU747618B2 (enExample)
BR (1) BR9810695A (enExample)
DE (1) DE69837663D1 (enExample)
EE (1) EE200000008A (enExample)
MY (1) MY120049A (enExample)
PL (1) PL337971A1 (enExample)
SG (1) SG70644A1 (enExample)
TW (1) TW386330B (enExample)
WO (1) WO1999003091A1 (enExample)

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Also Published As

Publication number Publication date
HK1031421A1 (en) 2001-06-15
EE200000008A (et) 2000-08-15
CN1122963C (zh) 2003-10-01
BR9810695A (pt) 2000-09-05
DE69837663D1 (de) 2007-06-06
EP0995188B1 (en) 2007-04-25
TW386330B (en) 2000-04-01
WO1999003091A1 (en) 1999-01-21
AU747618B2 (en) 2002-05-16
AU8364298A (en) 1999-02-08
JP2001509659A (ja) 2001-07-24
JP4082649B2 (ja) 2008-04-30
KR20010021720A (ko) 2001-03-15
US6430295B1 (en) 2002-08-06
KR100480404B1 (ko) 2005-04-06
CN1269902A (zh) 2000-10-11
EP0995188A1 (en) 2000-04-26
PL337971A1 (en) 2000-09-11
MY120049A (en) 2005-08-30

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