FR677217A - Téléphone haut-parleur électrostatique - Google Patents
Téléphone haut-parleur électrostatiqueInfo
- Publication number
- FR677217A FR677217A FR677217DA FR677217A FR 677217 A FR677217 A FR 677217A FR 677217D A FR677217D A FR 677217DA FR 677217 A FR677217 A FR 677217A
- Authority
- FR
- France
- Prior art keywords
- speakerphone
- electrostatic
- electrostatic speakerphone
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
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
- H04R19/00—Electrostatic transducers
- H04R19/02—Loudspeakers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1799053X | 1929-04-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR677217A true FR677217A (fr) | 1930-03-05 |
Family
ID=7743806
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR677217D Expired FR677217A (fr) | 1929-04-30 | 1929-06-22 | Téléphone haut-parleur électrostatique |
Country Status (3)
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2631196A (en) * | 1949-10-05 | 1953-03-10 | Arthur A Janszen | Electrostatic loud-speaker |
US3814864A (en) * | 1972-07-14 | 1974-06-04 | J Victoreen | Condenser microphone having a plurality of discrete vibratory surfaces |
US6304662B1 (en) | 1998-01-07 | 2001-10-16 | American Technology Corporation | Sonic emitter with foam stator |
US20020076069A1 (en) * | 1998-01-07 | 2002-06-20 | American Technology Corporation | Sonic emitter with foam stator |
US6188772B1 (en) | 1998-01-07 | 2001-02-13 | American Technology Corporation | Electrostatic speaker with foam stator |
US6201874B1 (en) | 1998-12-07 | 2001-03-13 | American Technology Corporation | Electrostatic transducer with nonplanar configured diaphragm |
US6175636B1 (en) | 1998-06-26 | 2001-01-16 | American Technology Corporation | Electrostatic speaker with moveable diaphragm edges |
US20050100181A1 (en) * | 1998-09-24 | 2005-05-12 | Particle Measuring Systems, Inc. | Parametric transducer having an emitter film |
US6850623B1 (en) * | 1999-10-29 | 2005-02-01 | American Technology Corporation | Parametric loudspeaker with improved phase characteristics |
US20050195985A1 (en) * | 1999-10-29 | 2005-09-08 | American Technology Corporation | Focused parametric array |
WO2002063922A2 (en) * | 2001-01-22 | 2002-08-15 | American Technology Corporation | Improved single-ended planar-magnetic speaker |
US6934402B2 (en) * | 2001-01-26 | 2005-08-23 | American Technology Corporation | Planar-magnetic speakers with secondary magnetic structure |
CA2528588A1 (en) * | 2003-06-09 | 2005-01-06 | American Technology Corporation | System and method for delivering audio-visual content along a customer waiting line |
WO2005043771A1 (en) * | 2003-10-23 | 2005-05-12 | American Technology Corporation | Method of adusting linear parameters of a parametric ultrasonic signal to reduce non-linearities in decoupled audio output waves and system including same |
US8275137B1 (en) | 2007-03-22 | 2012-09-25 | Parametric Sound Corporation | Audio distortion correction for a parametric reproduction system |
US8903116B2 (en) | 2010-06-14 | 2014-12-02 | Turtle Beach Corporation | Parametric transducers and related methods |
US9148712B2 (en) | 2010-12-10 | 2015-09-29 | Infineon Technologies Ag | Micromechanical digital loudspeaker |
WO2013106596A1 (en) | 2012-01-10 | 2013-07-18 | Parametric Sound Corporation | Amplification systems, carrier tracking systems and related methods for use in parametric sound systems |
WO2013158298A1 (en) | 2012-04-18 | 2013-10-24 | Parametric Sound Corporation | Parametric transducers related methods |
US8934650B1 (en) | 2012-07-03 | 2015-01-13 | Turtle Beach Corporation | Low profile parametric transducers and related methods |
US8903104B2 (en) | 2013-04-16 | 2014-12-02 | Turtle Beach Corporation | Video gaming system with ultrasonic speakers |
US8988911B2 (en) | 2013-06-13 | 2015-03-24 | Turtle Beach Corporation | Self-bias emitter circuit |
US9332344B2 (en) | 2013-06-13 | 2016-05-03 | Turtle Beach Corporation | Self-bias emitter circuit |
-
0
- NL NL29692D patent/NL29692C/xx active
-
1929
- 1929-06-22 FR FR677217D patent/FR677217A/fr not_active Expired
- 1929-07-09 US US377038A patent/US1799053A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US1799053A (en) | 1931-03-31 |
NL29692C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
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