Research on optimal control method of active noise reduction of active noise cancelling headphones combined with noise reduction of phonon materials in high voltage converter station

Abstract

The magnetostriction phenomenon of the converter transformer radiates high-decibel noise, and the noise is mainly low-frequency, and the noise penetration ability is strong and the propagation distance is long. Low-frequency noise can reach the ear bones easily, easily irritating the human nerves, causing symptoms such as rapid heartbeat and elevated blood pressure, which is more serious than medium and high-frequency noise damage, which seriously affects the work and life of the station staff. Active noise canceling headphones are difficult to achieve good noise reduction for high frequency noise. Based on this, this paper puts forward a new idea of incorporating active noise canceling headphones into phononic materials, and carries out preliminary verification by experimental method, and obtains better noise reduction effect. This paper is designed to promote the active noise reduction headphones to provide better reference for noise reduction, and has certain practical significance.