一种基于Arduino平台的数字音符实时显示设计分析

Design and Analysis of Real Time Display of Digital Notes Based on Arduino Platform

音频显示技术的开发比较早,但是目前完全停留在柱状高低音调图形显示层面。为了能够实时显示高低音调,利用快速傅里叶(FFT)对音频信号进行变换,在提取基波频率之后将其还变成音符。主要分析的音符是C调数字音符,借助LCD屏幕将音符的高低中音调音频显示出来。在以往的研究成果上,让音频以音乐简谱的方式表现出来,方便人们学习和了解,便于地方音乐的记录与研究。

The research audio display technology at home and abroad is relatively early,but at present,it is completely to stop with column display level for high and low tone graphics.In order to display the high tone,this paper uses the fast Fourier transform（FFT）to audio signal,to extract the fundamental frequency,then it becomes note.This article mainly analyzes the notes C.By LCD,digital notes can display audio level of tonality.In this paper,we mainly use the previous research results to make the audio presentation in music notation,which is convenient for people to learn,understand,and facilitate the recording and research of local music.