Analogue filters are widely used in active noise control. Usually, their implementation is fixed. Parameters can be varied only by changing components or adjusting their values manually. However, during development of a control system, parameter adjustments are often needed. To address this problem, we have developed an analogue filter bank with an adjustable, digital real-time control of the parameters. The filter has been tested with an existing active noise control application. The structure of the analogue filter is described and results of the tests are given.
|Title of host publication||Proceedings of ACTIVE 2002 , the 2002 International Symposium on Active Control of Sound and Vibration|
|Place of Publication||Southampton|
|Publication status||Published - 2002|
|MoE publication type||A4 Article in a conference publication|
|Event||International Symposium on Active Control of Sound and Vibration, ACTIVE 2002 - Southampton, United Kingdom|
Duration: 15 Jul 2002 → 17 Jul 2002
|Conference||International Symposium on Active Control of Sound and Vibration, ACTIVE 2002|
|Period||15/07/02 → 17/07/02|
- active noise control
- digitally controlled analogue filter
- biquad filter
Antila, M., Hakanen, K., & Kataja, J. (2002). Microcontroller-driven analogue filter for active noise control. In Proceedings of ACTIVE 2002 , the 2002 International Symposium on Active Control of Sound and Vibration (Vol. 1, pp. 449-456).