Details
| Original language | English |
|---|---|
| Title of host publication | Turkish Acoustical Society - 36th International Congress and Exhibition on Noise Control Engineering, INTER-NOISE 2007 ISTANBUL |
| Pages | 1821-1830 |
| Number of pages | 10 |
| Publication status | Published - 2007 |
| Event | 36th International Congress and Exhibition on Noise Control Engineering, INTER-NOISE 2007 - Istanbul, Turkey Duration: 28 Aug 2007 → 31 Aug 2007 |
Publication series
| Name | Turkish Acoustical Society - 36th International Congress and Exhibition on Noise Control Engineering, INTER-NOISE 2007 ISTANBUL |
|---|---|
| Volume | 3 |
Abstract
In active control of acoustical noise, the combination of feedback and adaptive feedforward control enables broadband noise reduction. A simple combination strategy, which is based on an internal model feedback controller and an adaptive "filtered-x least mean square" feedforward filter, is commonly used for this purpose. Although this method enables saving of memory and calculating resources, it fails in terms of stability when the secondary path is subject to variations. Especially in headset applications varying leakage of the ear cup leads to instability in the internal model controller loop. To overcome this problem we propose an alternative combination method of a standard feedback controller and an adaptive feedforward filter in this paper. The feedback controller was developed to be stable under all leakage conditions. The combination strategy consists firstly in tuning each controller according to the aimed frequency range. Secondly the binding structure is realised to enable both controllers to act simultaneously in a constructive way. The proposed method was implemented for an active noise control headset using a DSP platform and proved stability and broadband noise reduction under different ear cup leakage conditions.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Acoustics and Ultrasonics
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Turkish Acoustical Society - 36th International Congress and Exhibition on Noise Control Engineering, INTER-NOISE 2007 ISTANBUL. 2007. p. 1821-1830 (Turkish Acoustical Society - 36th International Congress and Exhibition on Noise Control Engineering, INTER-NOISE 2007 ISTANBUL; Vol. 3).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Combined feedback and adaptive feedforward active noise control in headsets
AU - Wolter, Björn
AU - Peissig, Jürgen
AU - Foudhaili, Hatem
AU - Reithmeier, Eduard
PY - 2007
Y1 - 2007
N2 - In active control of acoustical noise, the combination of feedback and adaptive feedforward control enables broadband noise reduction. A simple combination strategy, which is based on an internal model feedback controller and an adaptive "filtered-x least mean square" feedforward filter, is commonly used for this purpose. Although this method enables saving of memory and calculating resources, it fails in terms of stability when the secondary path is subject to variations. Especially in headset applications varying leakage of the ear cup leads to instability in the internal model controller loop. To overcome this problem we propose an alternative combination method of a standard feedback controller and an adaptive feedforward filter in this paper. The feedback controller was developed to be stable under all leakage conditions. The combination strategy consists firstly in tuning each controller according to the aimed frequency range. Secondly the binding structure is realised to enable both controllers to act simultaneously in a constructive way. The proposed method was implemented for an active noise control headset using a DSP platform and proved stability and broadband noise reduction under different ear cup leakage conditions.
AB - In active control of acoustical noise, the combination of feedback and adaptive feedforward control enables broadband noise reduction. A simple combination strategy, which is based on an internal model feedback controller and an adaptive "filtered-x least mean square" feedforward filter, is commonly used for this purpose. Although this method enables saving of memory and calculating resources, it fails in terms of stability when the secondary path is subject to variations. Especially in headset applications varying leakage of the ear cup leads to instability in the internal model controller loop. To overcome this problem we propose an alternative combination method of a standard feedback controller and an adaptive feedforward filter in this paper. The feedback controller was developed to be stable under all leakage conditions. The combination strategy consists firstly in tuning each controller according to the aimed frequency range. Secondly the binding structure is realised to enable both controllers to act simultaneously in a constructive way. The proposed method was implemented for an active noise control headset using a DSP platform and proved stability and broadband noise reduction under different ear cup leakage conditions.
UR - http://www.scopus.com/inward/record.url?scp=84873970805&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84873970805
SN - 9781605603858
T3 - Turkish Acoustical Society - 36th International Congress and Exhibition on Noise Control Engineering, INTER-NOISE 2007 ISTANBUL
SP - 1821
EP - 1830
BT - Turkish Acoustical Society - 36th International Congress and Exhibition on Noise Control Engineering, INTER-NOISE 2007 ISTANBUL
T2 - 36th International Congress and Exhibition on Noise Control Engineering, INTER-NOISE 2007
Y2 - 28 August 2007 through 31 August 2007
ER -