Research Of The RGB-LED Music Playing System Based On Spectrum Analysis

With the development of electronic, computer and multimedia technology,digital audio products are more and more popular with consumers, and the mostmusic players are gradually developed to portable music players, but this type ofplayer the focus of in its aesthetic appearance and small volume, and does nothave new functional design, what’s more, its sound quality is poor, capacity islimited, therefore, how to design a new, high-quality, multi-functional musicplayer system is become a development direction in the field of consumerelectronics.At present, most of the portable music player are integration of storage anddecoder, thus not only they have only a fixed and limited storage capacity, andthey are difficult to expand, but also it is not conducive to be applied to otherfields. In the design of the system in this paper, the storage and decoder areseparated, and U disk is used to store audio data, so the storage capacity is freelyexpanded. Meanwhile, due to the development of color music technology andmusic visualization techniques, in this paper, the sound and light are perfectlycombined by the use of RGB-LED light mixing, music and color correctmatching produce synesthesia effect, it is more precise and exquisite to reflect thechanges of the design can be more precise, delicate reflection changes inemotional effects of music emotion effect.In this paper, on the basis of in-depth study on the intrinsic relationshipbetween music and color, from the perspective of the spectrum, the relationshipbetween music and color is revealed, for there has been music and colormismatching problem, audio frequency dual-spectrum identification method isput forward, so as to achieve the result of an automatic real-time showing with itsmatching colors for the arbitrary random playing music. With the single chipprocessor as the core controller, this paper introduces the design and implementation of this system in detail, first of all, from the perspective of theoverall design, and then the design process is introduced minutely separatelyfrom the hardware and software aspects. According to the thought ofmodularization, the whole design is divided into data storage module, audiodecoding module, and RGB-LED mixed light module. In the data storage moduledesign, the USB interface chip circuit is designed, the audio data in U disk isefficiently read in real-time, and then an audio data stream in a certain sequencewill realize lossless decoding through the decoding chip in audio decodingmodule, at the same time, the digital signal is converted to analog signal forplayback through DAC, finally, the RGB-LED control is driven by pulse widthmodulation (PWM), the mixed light is stepless changed in real-time, to achievethe best RGB-LED mixed light effect.In this paper, after analysis, each part of function has been realized throughdebugging, this system has a good stability, feasibility, and high practical valueby practice, in the urban landscape, stage lighting, and psychological treatment, ithas broad application prospect.