Index of content:
Volume 103, Issue 1, January 1998
- NOISE: ITS EFFECTS AND CONTROL 
103(1998); http://dx.doi.org/10.1121/1.421125View Description Hide Description
This paper is concerned with the analysis and design of a feedback control active eardefender. By using classical control theory, the authors investigated the system stability and robustness of stability, the noise reduction level and its parameter sensitivity, and the working frequency range of the active eardefender. A general method for designing a stable feedback control eardefender is developed. In this theory, a special type of second-order compensator is used to improve the robustness of stability, the noise reduction level and its robustness, and the working area of the active eardefender, particularly at the low-frequency range of interest.