Design And Implementation Of Color Music System Based On Bluetooth Control

Synesthesia is what makes color music relevant,this paper focuses on the purpose of embedded system color music correlation presentation,using multidimensional music color model,time-frequency conversion algorithm,bluetooth wireless transmission technology,embedded system development technology,Android application software development technology and other technical methods,An embedded system with real-time color music matching effect based on Bluetooth control is implemented.The topic involves the proposal and establishment of multidimensional music color model,the proposal and experiment of color music algorithm based on time-frequency conversion,the design and construction of embedded hardware system,the development and compilation of Bluetooth communication application on Android platform.Finally,the audio-visual effect of perfect matching of musical colors is achieved.It has certain theoretical depth and technical application value.The main research content of this topic is as follows.Study on the mapping relationship of color music.Starting from the physical characteristics of color music,it is determined that there is an inevitable relationship between color music,which lays a theoretical foundation for the music-color conversion model.Inspired by the principle of three primary colors,a multidimensional mapping model of timbre based on HSV color space is analyzed,and a model transformation method of color music mapping relationship is proposed.Four algorithms of Fourier transform,discrete Fourier transform,fast Fourier transform and short-time Fourier transform are compared and analyzed,and a color music algorithm based on spectrum conversion is proposed based on the fast Fourier transform algorithm.The algorithm can not only effectively process non-stationary signals,but also greatly reduce the amount of calculation,improve accuracy,it also has a good porting application effect on embedded platforms,realize the color music mapping.Design and build an embedded experimental platform.The platform includes file playback module,audio decoding module,mixing module,spectrum display module and Bluetooth module,which can present audiovisual effects that match timbre in real time,and the platform has the characteristics of real-time,portability,accuracy and portability.Develop and design Bluetooth mobile phone applications.Using the interface functions provided by the Android platform,the programs for Bluetooth connection,Bluetooth communication and Bluetooth file transfer were designed and written,and the interface design was completed to realize the wireless communication between the mobile phone and the embedded platform.