基于单片机的多功能音乐频谱仪的设计与实现  

Design and Implementation of Multifunctional Music Spectrum Analyzer Based on Single Chip Microcomputer

作　　者：陈兰 江朋友 闪静洁[1] CHEN Lan;JIANG Peng-you;SHAN Jing-jie(Anhui Xinhua University,Hefei,Anhui 230000,Chin)

机构地区：[1]安徽新华学院,安徽合肥230000

出　　处：《科技视界》2018年第7期45-46,共2页Science & Technology Vision

基　　金：2016省级大学生创新计划训练项目(AH201612216037)

摘　　要：本文设计了一种多功能曲面音乐频谱仪,包括音乐输入模块、蓝牙接收模块、环境温度检测模块、LED显示模块;还包括快速傅里叶算法模块和A/D转换模块。本系统以STC12C5A60S2单片机为核心,通过蓝牙无线接收模块进行采集,将采集到的音频信号经A/D转换模块转为数字信号后,再经过滤波处理和快速傅里叶变换得到信号的频谱,通过LED矩阵频谱显示器显示出来。为了增强系统实用性,增加了环境温度监测、呼吸灯显示和时钟功能。This article designed a multi-functional surface music spectrum analyzer,including music input module,Bluetooth receiver module,ambient temperature detection module,LED display module; also includes fast Fourier algorithm module and A/D conversion module.This system takes the STC12C5A60S2 microcontroller as its core and collects it through the Bluetooth wireless receiver module.After the collected audio signal is converted into a digital signal by the A/D converter module,the frequency spectrum of the signal is obtained through filtering and fast Fourier transform.The LED matrix spectrum display is displayed.In order to enhance system availability,environmental temperature monitoring,breathing lamp display,and clock functions have been added.

关 键 词：STC12C5A60S2 A/D转换 LED 快速傅里叶变换 

分 类 号：TN912.3[电子电信—通信与信息系统]