| 8380254 |
Speaker device for a vehicle |
— |
2013-02-19 |
| 8130976 |
Bandpass box in the supporting structure of a vehicle |
Norbert Niemczyk |
2012-03-06 |
| 7508952 |
Acoustic sound routing in vehicles |
Marcus Hofmann |
2009-03-24 |
| 7503616 |
Motor vehicle having a microphone |
Norbert Niemczyk, Christian Weiss |
2009-03-17 |
| 7505901 |
Intelligent acoustic microphone fronted with speech recognizing feedback |
Alfred Kaltenmeier |
2009-03-17 |
| 7181025 |
Ultrasound based parametric loudspeaker system |
Guido Kolano |
2007-02-20 |
| 7020291 |
Noise reduction method with self-controlling interference frequency |
Markus Buck, Tim Haulick |
2006-03-28 |
| 6980663 |
Process and device for compensating for signal loss |
— |
2005-12-27 |
| 6687669 |
Method of reducing voice signal interference |
Peter Schrogmeier, Tim Haulick |
2004-02-03 |
| 6643619 |
Method for reducing interference in acoustic signals using an adaptive filtering method involving spectral subtraction |
Tim Haulick |
2003-11-04 |
| 6478108 |
Speaker box |
Gerhard Schaller |
2002-11-12 |
| 5479517 |
Method of estimating delay in noise-affected voice channels |
— |
1995-12-26 |
| 5400409 |
Noise-reduction method for noise-affected voice channels |
— |
1995-03-21 |
