[go: up one dir, main page]

FI20030364L - Method for measuring the movement of a loudspeaker element and a loudspeaker equipped with movement measurement - Google Patents

Method for measuring the movement of a loudspeaker element and a loudspeaker equipped with movement measurement Download PDF

Info

Publication number
FI20030364L
FI20030364L FI20030364A FI20030364A FI20030364L FI 20030364 L FI20030364 L FI 20030364L FI 20030364 A FI20030364 A FI 20030364A FI 20030364 A FI20030364 A FI 20030364A FI 20030364 L FI20030364 L FI 20030364L
Authority
FI
Finland
Prior art keywords
movement
loudspeaker
measuring
measurement
movement measurement
Prior art date
Application number
FI20030364A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI118030B (en
FI20030364A0 (en
Inventor
Pasi Veli Matias Nuutinmaeki
Original Assignee
Pasi Veli Matias Nuutinmaeki
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 Pasi Veli Matias Nuutinmaeki filed Critical Pasi Veli Matias Nuutinmaeki
Priority to FI20030364A priority Critical patent/FI118030B/en
Publication of FI20030364A0 publication Critical patent/FI20030364A0/en
Priority to EP04719481A priority patent/EP1606971A1/en
Priority to PCT/FI2004/050027 priority patent/WO2004082330A1/en
Publication of FI20030364L publication Critical patent/FI20030364L/en
Application granted granted Critical
Publication of FI118030B publication Critical patent/FI118030B/en

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
    • H04R29/00—Monitoring arrangements; Testing arrangements
    • H04R29/001—Monitoring arrangements; Testing arrangements for loudspeakers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/24—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying capacitance
    • G01D5/241—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying capacitance by relative movement of capacitor electrodes
    • G01D5/2412—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying capacitance by relative movement of capacitor electrodes by varying overlap
    • 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
    • H04R3/002—Damping circuit arrangements for transducers, e.g. motional feedback circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
FI20030364A 2003-03-12 2003-03-12 A method for measuring the movement of a speaker element and a speaker with motion measurement FI118030B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FI20030364A FI118030B (en) 2003-03-12 2003-03-12 A method for measuring the movement of a speaker element and a speaker with motion measurement
EP04719481A EP1606971A1 (en) 2003-03-12 2004-03-11 Loudspeaker equipped with measurement of the movement of the loudspeaker unit and a method for measuring the movement of the loudspeaker unit in a loudspeaker
PCT/FI2004/050027 WO2004082330A1 (en) 2003-03-12 2004-03-11 Loudspeaker equipped with measurement of the movement of the loudspeaker unit and a method for measuring the movement of the loudspeaker unit in a loudspeaker

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20030364A FI118030B (en) 2003-03-12 2003-03-12 A method for measuring the movement of a speaker element and a speaker with motion measurement
FI20030364 2003-03-12

Publications (3)

Publication Number Publication Date
FI20030364A0 FI20030364A0 (en) 2003-03-12
FI20030364L true FI20030364L (en) 2004-09-13
FI118030B FI118030B (en) 2007-05-31

Family

ID=8565792

Family Applications (1)

Application Number Title Priority Date Filing Date
FI20030364A FI118030B (en) 2003-03-12 2003-03-12 A method for measuring the movement of a speaker element and a speaker with motion measurement

Country Status (3)

Country Link
EP (1) EP1606971A1 (en)
FI (1) FI118030B (en)
WO (1) WO2004082330A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2081403B1 (en) 2008-01-17 2014-08-13 VLSI Solution Oy Method and device for detecting a displacement and movement of a sound producing unit of a woofer
US9241227B2 (en) 2011-01-06 2016-01-19 Bose Corporation Transducer with integrated sensor
US8705754B2 (en) 2011-03-30 2014-04-22 Bose Corporation Measuring transducer displacement
CN103517189B (en) * 2012-06-29 2017-08-11 华为终端有限公司 A kind of loudspeaker and terminal
US9681228B2 (en) 2014-09-30 2017-06-13 Apple Inc. Capacitive position sensing for transducers

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3245417A1 (en) * 1982-12-08 1984-07-19 Telefunken Fernseh Und Rundfunk Gmbh, 3000 Hannover Electromagnetic transducer
US4573189A (en) * 1983-10-19 1986-02-25 Velodyne Acoustics, Inc. Loudspeaker with high frequency motional feedback
US4531025A (en) * 1984-03-19 1985-07-23 Intersonics Incorporated Loudspeaker with commutated coil drive
SE452238B (en) * 1985-05-15 1987-11-16 Bo Hakansson Frequency characteristics measurement appts. for hearing aid
US5493620A (en) * 1993-12-20 1996-02-20 Pulfrey; Robert E. High fidelity sound reproducing system
FI116873B (en) * 1996-02-26 2006-03-15 Panphonics Oy Acoustic element and sound processing method
US20020159606A1 (en) * 2001-04-30 2002-10-31 Maximilian Hobelsberger Electrodynamic transducer with acceleration control
CA2408045A1 (en) * 2001-10-16 2003-04-16 Audio Products International Corp. Loudspeaker with large displacement motional feedback

Also Published As

Publication number Publication date
FI118030B (en) 2007-05-31
FI20030364A0 (en) 2003-03-12
WO2004082330A1 (en) 2004-09-23
EP1606971A1 (en) 2005-12-21

Similar Documents

Publication Publication Date Title
FI20030598L (en) Measuring device and method for measuring heart rate and method of manufacturing the measuring device
DE60324738D1 (en) Measuring device with a biosensor
FI20022009A7 (en) Method and device for measuring stress
FI20031476L (en) Sensor for measuring signals from the skin surface and method of manufacturing the sensor
DE602004013538D1 (en) IMPROVED MEASURING ARRANGEMENT
DE50306489D1 (en) Distance measuring device
FI20030392L (en) Method and device for measuring a multichannel signal
DE60327781D1 (en) MAGNETIC MEASURING DEVICE
FI20040351L (en) Measurement method and arrangement
DE50313043D1 (en) DISTANCE MEASURING DEVICE
DE502004005536D1 (en) MEASURING DEVICE
DE602004005556D1 (en) Movement measuring device
DE502004006947D1 (en) DISTANCE MEASURING DEVICE
DE502004007563D1 (en) INTERFEROMETRIC MEASURING DEVICE
DE50302530D1 (en) INTERFEROMETRIC MEASURING DEVICE
FI20030364L (en) Method for measuring the movement of a loudspeaker element and a loudspeaker equipped with movement measurement
FI20040471L (en) Method and device for improving the accuracy of weighing measurements
FI20031021A0 (en) Mechanical measuring device and measuring method
FI20041589L (en) Measuring sensor
DE502004000142D1 (en) Measuring Point Stud
DE602004004684D1 (en) measuring device
FI20041545A0 (en) Method and system for optically measuring the shape of a body
DE60316985D1 (en) measuring device
FI20045330L (en) Measuring instrument
DE112004003152A5 (en) measuring device

Legal Events

Date Code Title Description
FG Patent granted

Ref document number: 118030

Country of ref document: FI