Abstract
In the previous research, a kind of active-passive hybrid muffler has been developed for ventilation systems to reduce broadband noise. Its active part consists of an error microphone, a controller, a secondary loudspeaker and its power amplifier. A reference microphone is inside the passive part. The controller is outside the muffler and has little big size. In order to make it more compact, convenient and cheaper, an improved active-passive hybrid muffler is proposed in this work. The controller and power amplifier are integrated into one circuit board inside the muffler. Ordinary microphones are used as reference and error sensors. The muffler can identify the secondary-path transfer function automatically when the controlled system characteristics changes. Its passive and active-passive performances are validated by experiments.
| Original language | English |
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| Publication status | Published - 2018 |
| Externally published | Yes |
| Event | 47th International Congress and Exposition on Noise Control Engineering: Impact of Noise Control Engineering, INTER-NOISE 2018 - Chicago, United States Duration: Aug 26 2018 → Aug 29 2018 |
Conference
| Conference | 47th International Congress and Exposition on Noise Control Engineering: Impact of Noise Control Engineering, INTER-NOISE 2018 |
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| Country/Territory | United States |
| City | Chicago |
| Period | 8/26/18 → 8/29/18 |
Bibliographical note
Publisher Copyright:© INTER-NOISE 2018 - 47th International Congress and Exposition on Noise Control Engineering: Impact of Noise Control Engineering. All rights reserved.
ASJC Scopus Subject Areas
- Acoustics and Ultrasonics