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This paper is to perform a design optimization of micromachined piezoelectric transducer by maximizing the system exciting sensitivity. The transducer is a membrane-based micromachined transducer with the piezoelectric film to excite the membrane vibrating. In this study, the exciting sensitivity is taken as the optimization objective. Specifically, when fixing the exciting signal, the transducer...
The paper describes a method to estimate the power consumption of miniature audio directional transducer using KZK equation according to a larger transducer with the same structure and the same material. A theoretical analysis of sound propagation and sound power for concave-convex cylindrical transducers is presented, which are made by PVDF film of 28 mum with two-sided silver ink of 10 mum at each...
Audio beam system is a revolutionary way of projecting audio signal in a highly directional manner to listener. This paper focuses on the power management of audio beam system. A specific loudspeaker, which is fabricated by polyvinylidene fluoride (PVDF), is proposed according to the theory of corrugated structure for PVDF film. Based on the test and analysis results, a unique digital amplifier, Class...
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