NL6813996A - - Google Patents

Info

Publication number
NL6813996A
NL6813996A NL6813996A NL6813996A NL6813996A NL 6813996 A NL6813996 A NL 6813996A NL 6813996 A NL6813996 A NL 6813996A NL 6813996 A NL6813996 A NL 6813996A NL 6813996 A NL6813996 A NL 6813996A
Authority
NL
Netherlands
Application number
NL6813996A
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 filed Critical
Priority to NL6813996A priority Critical patent/NL6813996A/xx
Priority to US861028A priority patent/US3654402A/en
Priority to AT911369A priority patent/AT316669B/en
Priority to DE19691948932 priority patent/DE1948932A1/en
Priority to GB47801/69A priority patent/GB1245030A/en
Priority to FR6933362A priority patent/FR2019236A1/fr
Publication of NL6813996A publication Critical patent/NL6813996A/xx

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
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
    • G06V30/10—Character recognition
    • G06V30/18—Extraction of features or characteristics of the image
    • G06V30/1801—Detecting partial patterns, e.g. edges or contours, or configurations, e.g. loops, corners, strokes or intersections
    • G06V30/18067—Detecting partial patterns, e.g. edges or contours, or configurations, e.g. loops, corners, strokes or intersections by mapping characteristic values of the pattern into a parameter space, e.g. Hough transformation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
    • G06V30/40—Document-oriented image-based pattern recognition
    • G06V30/42—Document-oriented image-based pattern recognition based on the type of document
    • G06V30/424—Postal images, e.g. labels or addresses on parcels or postal envelopes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/26—Damping by means acting directly on free portion of diaphragm or cone

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Artificial Intelligence (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
NL6813996A 1968-09-30 1968-09-30 NL6813996A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
NL6813996A NL6813996A (en) 1968-09-30 1968-09-30
US861028A US3654402A (en) 1968-09-30 1969-09-25 Transducer for converting acoustic vibrations into electrical oscillations, and vice versa, in the form of a diaphragm coated with at least one layer of a piezo-electric material
AT911369A AT316669B (en) 1968-09-30 1969-09-26 microphone
DE19691948932 DE1948932A1 (en) 1968-09-30 1969-09-27 Converter for converting acoustic vibrations into electrical vibrations and vice versa in the form of a vibrating plate with at least one layer of piezoelectric material
GB47801/69A GB1245030A (en) 1968-09-30 1969-09-29 Microphone
FR6933362A FR2019236A1 (en) 1968-09-30 1969-09-30

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6813996A NL6813996A (en) 1968-09-30 1968-09-30

Publications (1)

Publication Number Publication Date
NL6813996A true NL6813996A (en) 1970-04-01

Family

ID=19804802

Family Applications (1)

Application Number Title Priority Date Filing Date
NL6813996A NL6813996A (en) 1968-09-30 1968-09-30

Country Status (6)

Country Link
US (1) US3654402A (en)
AT (1) AT316669B (en)
DE (1) DE1948932A1 (en)
FR (1) FR2019236A1 (en)
GB (1) GB1245030A (en)
NL (1) NL6813996A (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3937991A (en) * 1970-03-09 1976-02-10 Fred M. Dellorfano, Jr. And Donald P. Massa, Trustees Of The Stoneleigh Trust Electroacoustic transducers of the bilaminar flexural vibrating type and method for manufacturing same
US3777192A (en) * 1970-10-08 1973-12-04 Dynamics Corp Massa Div A method for adjusting the resonant frequency and motional electrical impedance of a vibrating diaphragm electroacoustic transducer
US3786202A (en) * 1972-04-10 1974-01-15 Motorola Inc Acoustic transducer including piezoelectric driving element
JPS5758877Y2 (en) * 1974-02-18 1982-12-16
US4156156A (en) * 1977-08-18 1979-05-22 P. R. Mallory & Co. Inc. Method for reducing the resonant frequency of a piezoelectric transducer
DE2831362A1 (en) * 1978-07-17 1980-01-31 Siemens Ag ELECTROACOUSTIC CONVERTER
DE3005708C2 (en) * 1980-02-15 1984-08-30 Siemens AG, 1000 Berlin und 8000 München Transducer plate for piezoelectric transducers
US4516428A (en) * 1982-10-28 1985-05-14 Pan Communications, Inc. Acceleration vibration detector
FR2536622B1 (en) * 1982-11-19 1986-03-07 Thomson Csf SPEED HYDROPHONE
GB8519026D0 (en) * 1985-07-27 1985-09-04 Laing J Piezo electrical inertia sensitive device
US4949194A (en) * 1988-02-26 1990-08-14 Quest Technology Corporation Ceramic support arm for movably positioning transducers
BE1011085A4 (en) * 1997-04-03 1999-04-06 Sonitron Naamloze Vennootschap ELEMENT FOR PLAYING AND / OR RECORDING SOUND.
BE1011559A4 (en) * 1997-11-20 1999-10-05 Sonitron Naamloze Vennootschap Element for reproducing and/or recording sound
BR112022012943A2 (en) 2020-01-17 2022-09-13 Shenzhen Shokz Co Ltd MICROPHONE AND ELECTRONIC DEVICE CONTAINING THE SAME

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2105010A (en) * 1933-02-25 1938-01-11 Brush Dev Co Piezoelectric device
US2207539A (en) * 1939-07-26 1940-07-09 Brush Dev Co Piezoelectric apparatus
US3002179A (en) * 1952-09-03 1961-09-26 Donald W Kuester Low frequency hydrophone
US3030606A (en) * 1953-03-19 1962-04-17 Wilbur T Harris Hollow conical electromechanical transducer
US2967957A (en) * 1957-09-17 1961-01-10 Massa Frank Electroacoustic transducer
US3311761A (en) * 1963-12-26 1967-03-28 Schloss Fred Transducer mounting

Also Published As

Publication number Publication date
GB1245030A (en) 1971-09-02
FR2019236A1 (en) 1970-06-26
DE1948932A1 (en) 1970-04-09
US3654402A (en) 1972-04-04
AT316669B (en) 1974-07-25

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