Abstract
Recent trends in the automotive audio industry have shown the importance of active noise cancelation (ANC)
for major improvements in mobile entertainment environments. These approaches target the acoustical noise
in the cabin and superimpose an inverse noise signal to cancel disturbances. Electromagnetic interference
between switch-mode audio power amplifiers and receivers show the same physical obstacle as the described
ANC endeavors are targeting. The principle of active electromagnetic interference cancelation (AEC) is
derived in this paper on a theoretical basis with verifications in simulation and experiment. The resulting
switch-mode audio power amplifier of this experiment keeps its high efficiency and is able to deliver the
signal with less than 0.1 % distortion, while improving the source of electromagnetic interference by 15 dB.
| Original language | English |
|---|---|
| Title of host publication | The Proceedings of the AES 36th International Conference : Automotive Audio - Sound in Motion |
| Publisher | AES |
| Publication date | 2009 |
| Pages | 000019 |
| ISBN (Print) | 978-0-937803-69-1 |
| Publication status | Published - 2009 |
| Event | AES 36th International Conference: Automotive Audio - Sound in Motion - Dearborn, MI, United States Duration: 2 Jun 2009 → 4 Jun 2009 Conference number: 36 |
Conference
| Conference | AES 36th International Conference |
|---|---|
| Number | 36 |
| Country/Territory | United States |
| City | Dearborn, MI |
| Period | 02/06/2009 → 04/06/2009 |