|
US4524436A
(en)
*
|
1981-05-15 |
1985-06-18 |
Schlumberger Technology Corporation |
Pressure wave fiber optic transducer cable
|
|
CA1277415C
(en)
*
|
1986-04-11 |
1990-12-04 |
Lorne A. Whitehead |
Elastomer membrane enhanced electrostatic transducer
|
|
US5682075A
(en)
*
|
1993-07-14 |
1997-10-28 |
The University Of British Columbia |
Porous gas reservoir electrostatic transducer
|
|
US6304662B1
(en)
|
1998-01-07 |
2001-10-16 |
American Technology Corporation |
Sonic emitter with foam stator
|
|
US6188772B1
(en)
|
1998-01-07 |
2001-02-13 |
American Technology Corporation |
Electrostatic speaker with foam stator
|
|
US20020076069A1
(en)
*
|
1998-01-07 |
2002-06-20 |
American Technology Corporation |
Sonic emitter with foam stator
|
|
US6175636B1
(en)
|
1998-06-26 |
2001-01-16 |
American Technology Corporation |
Electrostatic speaker with moveable diaphragm edges
|
|
US6850623B1
(en)
*
|
1999-10-29 |
2005-02-01 |
American Technology Corporation |
Parametric loudspeaker with improved phase characteristics
|
|
US20050100181A1
(en)
*
|
1998-09-24 |
2005-05-12 |
Particle Measuring Systems, Inc. |
Parametric transducer having an emitter film
|
|
US20050195985A1
(en)
*
|
1999-10-29 |
2005-09-08 |
American Technology Corporation |
Focused parametric array
|
|
WO2005002199A2
(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
|
|
JP2009038637A
(ja)
*
|
2007-08-02 |
2009-02-19 |
Yamaha Corp |
静電型スピーカ
|
|
CN103168480B
(zh)
|
2010-06-14 |
2016-03-30 |
乌龟海岸公司 |
改善的参量信号处理和发射器系统及相关方法
|
|
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
|
|
US9332344B2
(en)
|
2013-06-13 |
2016-05-03 |
Turtle Beach Corporation |
Self-bias emitter circuit
|
|
US8988911B2
(en)
|
2013-06-13 |
2015-03-24 |
Turtle Beach Corporation |
Self-bias emitter circuit
|