PL337971A1 - Method of and appartaus for measuring both the level and time-lag of signals in many sensors - Google Patents

Method of and appartaus for measuring both the level and time-lag of signals in many sensors

Info

Publication number
PL337971A1
PL337971A1 PL98337971A PL33797198A PL337971A1 PL 337971 A1 PL337971 A1 PL 337971A1 PL 98337971 A PL98337971 A PL 98337971A PL 33797198 A PL33797198 A PL 33797198A PL 337971 A1 PL337971 A1 PL 337971A1
Authority
PL
Poland
Prior art keywords
appartaus
lag
measuring
signals
level
Prior art date
Application number
PL98337971A
Other languages
English (en)
Inventor
Knut Peter Handel
Jim Agne Jerker 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 PL337971A1 publication Critical patent/PL337971A1/xx

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)
  • Circuit For Audible Band Transducer (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Noise Elimination (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Testing Or Calibration Of Command Recording Devices (AREA)
PL98337971A 1997-07-11 1998-07-03 Method of and appartaus for measuring both the level and time-lag of signals in many sensors PL337971A1 (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
PL337971A1 true PL337971A1 (en) 2000-09-11

Family

ID=25397124

Family Applications (1)

Application Number Title Priority Date Filing Date
PL98337971A PL337971A1 (en) 1997-07-11 1998-07-03 Method of and appartaus for measuring both the level and time-lag of signals in many 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
CN1269902A (zh) 2000-10-11
EP0995188A1 (en) 2000-04-26
KR20010021720A (ko) 2001-03-15
EP0995188B1 (en) 2007-04-25
SG70644A1 (en) 2000-02-22
EE200000008A (et) 2000-08-15
TW386330B (en) 2000-04-01
DE69837663D1 (de) 2007-06-06
AU747618B2 (en) 2002-05-16
BR9810695A (pt) 2000-09-05
JP2001509659A (ja) 2001-07-24
JP4082649B2 (ja) 2008-04-30
AU8364298A (en) 1999-02-08
HK1031421A1 (en) 2001-06-15
US6430295B1 (en) 2002-08-06
WO1999003091A1 (en) 1999-01-21
MY120049A (en) 2005-08-30
KR100480404B1 (ko) 2005-04-06
CN1122963C (zh) 2003-10-01

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