Nanogenerators provide important freedom for future electronic system design by collecting dispersed mechanical energy to power devices such as Internet of Things. Although researchers have focused on breaking through the design of high energy density nanogenerators, the whole system energy consumption design can effectively improve the convenience and effectiveness of the self-powered system design by reducing the use area of nanogenerators. In this study, we use the brightness change of an light-emitting device (LED) powered by a nanogenerator to convert the vibration of an instrument into a light signal (LS). This method effectively eliminates the additional phase difference commonly encountered in traditional sound signal (SS) transmission, thereby providing a significant phase verification technique for symphony orchestra coordination and related applications. This system does not rely on chip conversion signals, and does not require a Bluetooth transceiver system, so it can achieve long-distance signal transmission. The system implements a fully self-powered design, so this work has an important impact on the design of related systems in the future.