| US3895193A
              (en)
            
            * | 1968-04-29 | 1975-07-15 | Pond Chester C | Cross-over network and bias voltage supply for dynamic-electrostatic speaker system | 
        
          | US3668336A
              (en)
            
            * | 1969-12-08 | 1972-06-06 | Dayton Wright Associates Ltd | Audio system including electrostatic loudspeaker | 
        
          | GB1563511A
              (en)
            
            * | 1976-03-19 | 1980-03-26 | Harwood H | Diaphragms for electroacoustic transducers | 
        
          | US4160882A
              (en)
            
            * | 1978-03-13 | 1979-07-10 | Driver Michael L | Double diaphragm electrostatic transducer each diaphragm comprising two plastic sheets having different charge carrying characteristics | 
        
          | JPS57125600A
              (en)
            
            * | 1981-02-21 | 1982-08-04 | Bulgarsko Radio | Electrostatic acoustic converter | 
        
          | AT382490B
              (de)
            
            * | 1984-12-03 | 1987-02-25 | Akg Akustische Kino Geraete | Grossflaechiger elektrostatischer lautsprecher | 
        
          | US5206557A
              (en)
            
            * | 1990-11-27 | 1993-04-27 | Mcnc | Microelectromechanical transducer and fabrication method | 
        
          | WO1993001691A1
              (en)
            
            * | 1991-07-11 | 1993-01-21 | Driver Michael L | Electrolytic loudspeaker assembly | 
        
          | US5479061A
              (en)
            
            * | 1992-12-31 | 1995-12-26 | University Of North Carolina | Pleated sheet microelectromechanical transducer | 
        
          | 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 | 
        
          | US6304662B1
              (en) | 1998-01-07 | 2001-10-16 | 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 | 
        
          | US7142688B2
              (en)
            
            * | 2001-01-22 | 2006-11-28 | American Technology Corporation | Single-ended planar-magnetic speaker | 
        
          | US6934402B2
              (en)
            
            * | 2001-01-26 | 2005-08-23 | American Technology Corporation | Planar-magnetic speakers with secondary magnetic structure | 
        
          | 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 | 
        
          | CA2584602C
              (en)
            
            * | 2006-04-14 | 2015-01-06 | Murray R. Harman | Electrostatic loudspeaker capable of dispersing sound both horizontally and vertically | 
        
          | US8670581B2
              (en) | 2006-04-14 | 2014-03-11 | Murray R. Harman | Electrostatic loudspeaker capable of dispersing sound both horizontally and vertically | 
        
          | DE102007007957A1
              (de)
            
            * | 2007-02-17 | 2008-08-21 | Lyttron Technology Gmbh | Lautsprecher aufgebaut aus Folien | 
        
          | US8275137B1
              (en) | 2007-03-22 | 2012-09-25 | Parametric Sound Corporation | Audio distortion correction for a parametric reproduction system | 
        
          | DE102008047796A1
              (de) | 2008-09-17 | 2010-04-15 | Siemens Aktiengesellschaft | Vorrichtung zur Erzeugung von breitbandigem Schall im Hörbereich des Menschen | 
        
          | EP2580922B1
              (en) | 2010-06-14 | 2019-03-20 | Turtle Beach Corporation | Improved parametric signal processing and emitter systems and related methods | 
        
          | US9036831B2
              (en) | 2012-01-10 | 2015-05-19 | Turtle Beach Corporation | Amplification system, carrier tracking systems and related methods for use in parametric sound systems | 
        
          | WO2013145411A1
              (ja)
            
            * | 2012-03-30 | 2013-10-03 | 東海ゴム工業株式会社 | スピーカー | 
        
          | US8958580B2
              (en) | 2012-04-18 | 2015-02-17 | Turtle Beach Corporation | Parametric transducers and 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 | 
        
          | EP3036478A1
              (en)
            
            * | 2013-05-20 | 2016-06-29 | Aliphcom, Inc. | Combination speaker and light source responsive to state(s) of an environment based on sensor data | 
        
          | 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 | 
        
          | US9544696B2
              (en)
            
            * | 2013-12-23 | 2017-01-10 | Disney Enterprises, Inc. | Flexible, shapeable free-form electrostatic speakers | 
        
          | DE102017107958B4
              (de) | 2017-04-12 | 2018-11-15 | AIFC Unternehmensförderungsgesellschaft mbH & Co. KG | Lautsprecher mit aufrollbarer Membrane | 
        
          | US11012788B2
              (en)
            
            * | 2018-03-27 | 2021-05-18 | Sony Corporation | Loudspeaker system |