AT316669B - Mikrophon - Google Patents
MikrophonInfo
- Publication number
- AT316669B AT316669B AT911369A AT911369A AT316669B AT 316669 B AT316669 B AT 316669B AT 911369 A AT911369 A AT 911369A AT 911369 A AT911369 A AT 911369A AT 316669 B AT316669 B AT 316669B
- Authority
- AT
- Austria
- Prior art keywords
- microphone
- Prior art date
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)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL6813996A NL6813996A (xx) | 1968-09-30 | 1968-09-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
AT316669B true AT316669B (de) | 1974-07-25 |
Family
ID=19804802
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT911369A AT316669B (de) | 1968-09-30 | 1969-09-26 | Mikrophon |
Country Status (6)
Country | Link |
---|---|
US (1) | US3654402A (xx) |
AT (1) | AT316669B (xx) |
DE (1) | DE1948932A1 (xx) |
FR (1) | FR2019236A1 (xx) |
GB (1) | GB1245030A (xx) |
NL (1) | NL6813996A (xx) |
Families Citing this family (14)
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 (xx) * | 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. |
EP4035416A4 (en) | 2020-01-17 | 2022-11-09 | Shenzhen Shokz Co., Ltd. | MICROPHONE AND ELECTRONIC DEVICE INCLUDING IT |
Family Cites Families (6)
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 |
-
1968
- 1968-09-30 NL NL6813996A patent/NL6813996A/xx unknown
-
1969
- 1969-09-25 US US861028A patent/US3654402A/en not_active Expired - Lifetime
- 1969-09-26 AT AT911369A patent/AT316669B/de not_active IP Right Cessation
- 1969-09-27 DE DE19691948932 patent/DE1948932A1/de active Pending
- 1969-09-29 GB GB47801/69A patent/GB1245030A/en not_active Expired
- 1969-09-30 FR FR6933362A patent/FR2019236A1/fr not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
DE1948932A1 (de) | 1970-04-09 |
GB1245030A (en) | 1971-09-02 |
NL6813996A (xx) | 1970-04-01 |
US3654402A (en) | 1972-04-04 |
FR2019236A1 (xx) | 1970-06-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ELJ | Ceased due to non-payment of the annual fee |