Design of Directional Audio System Based on Class D Power Amplifier
In order to solve the problem of noise disturbance caused by the divergence and non directionality of traditional sound propagation,based on its narrow beam and strong directionality characteristics and the self demod-ulation principle of air nonlinearity,a directional audio frequency system with class D power amplifier as the core is designed and implemented using ultrasound as the carrier.After practical application,the system works stably and has good directionality,which can effectively solve the problem of noise disturbance to residents.
ultrasonicdirectional audioD-class power amplifier
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