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/de
Priority to DE19691948932 priority patent/DE1948932A1/de
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 OR CALCULATING; 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 OR CALCULATING; 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 (enrdf_load_stackoverflow)

Priority Applications (6)

Application Number Priority Date Filing Date Title
NL6813996A NL6813996A (enrdf_load_stackoverflow) 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 (de) 1968-09-30 1969-09-26 Mikrophon
DE19691948932 DE1948932A1 (de) 1968-09-30 1969-09-27 Wandler zur Umwandlung von akustischen Schwingungen in elektrische Schwingungen und umgekehrt in Form einer Schwingplatte mit mindestens einer Schicht aus piezoelektrischem Material
GB47801/69A GB1245030A (en) 1968-09-30 1969-09-29 Microphone
FR6933362A FR2019236A1 (enrdf_load_stackoverflow) 1968-09-30 1969-09-30

Applications Claiming Priority (1)

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

Publications (1)

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

Family

ID=19804802

Family Applications (1)

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

Country Status (6)

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

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 (enrdf_load_stackoverflow) * 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 (de) * 1978-07-17 1980-01-31 Siemens Ag Elektroakustischer wandler
DE3005708C2 (de) * 1980-02-15 1984-08-30 Siemens AG, 1000 Berlin und 8000 München Wandlerplatte für piezoelektrische Wandler
US4516428A (en) * 1982-10-28 1985-05-14 Pan Communications, Inc. Acceleration vibration detector
FR2536622B1 (fr) * 1982-11-19 1986-03-07 Thomson Csf Hydrophone de vitesse
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 (nl) * 1997-04-03 1999-04-06 Sonitron Naamloze Vennootschap Element voor het weergeven en/of opnemen van geluid.
BE1011559A4 (nl) * 1997-11-20 1999-10-05 Sonitron Naamloze Vennootschap Element voor het weergeven en/of opnemen van geluid.
CN115088271B (zh) 2020-01-17 2025-05-02 深圳市韶音科技有限公司 一种麦克风及电子设备

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

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