Science & Engineering Research Support soCiety (SERSC)
A novel device which can play audio files with LED lights whose RGB effects are based on frequency spectrum analysis to the audio signal while it is playing is introduced in this paper. Not only can the device bring the authors with songs, but also it presents colorful lights while they appreciate music. RGB light mixed principle and the relations between music and light colors which are through LED lights driven by PWM are investigated. The device is composed of SD card, U disk to store medium files, the audio decoder to produce audio signals, speakers, etc., and the all components are under the control of a microprocessor.