Fifth International Congress on Sound and Vibration
نویسندگان
چکیده
A frequency domain filtered-x type least mean active sound intensity adaptive control algorithm based on waveform synthesis is developed for active control of transformer noise. The algorithm is useful for providing global control of transformer noise by minirnising the mean active sound intensities for the fundamental frequency and its harmonics in the near acoustic field of the transformer. Mean active sound intensity has been found to be the most effective near field acoustic error sensing strategy for active control of free field sound radiation[ 1]. The algorithm adjusts the amplitude and phase of each tone to be controlled in the frequency domain and implements the waveform synthesis process in the time domain. The transfer function of the cancellation path is included in the algorithm so that it becomes a filtered-x type adaptive algorithm.
منابع مشابه
Fifth International Congress on Sound and Vibration
The evolution of active systems applied to the reduction of aircraft cabin noise is studied. The main objective is to establish whether there are any significant lessons relative to the general use and commercialization of active noise and vibration systems.
متن کاملFifth International Congress on Sound and Vibration
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متن کاملFifth International Congress on Sound and Vibration
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