便携式数控模拟电子音乐合成器设计  

Design of Portable Numerical Control Analog Electronic Music Synthesizer

作　　者：徐欣怡 秦斐燕 丁文霞 王福杰 谢仲业 沈博 武淼 XU Xinyi;QIN Feiyan;DING Wenxia;WANG Fujie;XIE Zhongye;SHEN Bo;WU Miao(Elite Engineers College(Innovation Entrepreneurship College),Dongguan University of Technology,Dongguan 523808,China)

机构地区：[1]东莞理工学院卓越工程师学院(创新创业学院),广东东莞523808

出　　处：《东莞理工学院学报》2025年第1期68-76,共9页Journal of Dongguan University of Technology

基　　金：广东省基础与应用基础研究面上项目(2024A1515010222);松山湖科技特派员项目(20234376-01KCJ-G)。

摘　　要：针对现有音乐合成器不能兼顾体积小,灵活与多音色调节等问题,设计了一种新型低成本、易操作的便携式数控模拟电子音乐合成器。该合成器由音序器、压控振荡器、音频功率放大和录音,四个模块构成。其中,音序器使用定时器芯片NE555结合脉冲分配器CD4017输出音序;压控振荡器模块使用施密特触发器和运算放大器产生稳定的波形并对其进行转换;音频功率放大模块使用AB类音频功放芯片TDA2030对波形进行放大;录放音模块采用集成录放音芯片ISD1820实现对一定时长的音频录制与播放。实验结果表明,该合成器实现了16路音序的输出和锯齿波、矩形波、正弦波三种振荡波形的生成,音频功放输出功率最大可达2W,输出波形无明显失真,音量可调,录制音频时长可达20 s。In response to the problems of small size,flexibility,and multi tone adjustment that existing music synthesizers cannot balance,this paper designs a new low-cost and easy to operate portable CNC analog electronic music synthesizer.The synthesizer consists of four modules:a sound sequencer,a voltage controlled oscillator,audio power amplifier,and recording.Among them,the sequencer uses a timer chip NE555 combined with a pulse distributor CD4017 to output the sequence;The voltage controlled oscillator module uses Schmitt triggers and operational amplifiers to generate stable waveforms and convert them;The audio power amplification module uses the AB class audio power amplifier chip TDA2030 to amplify the waveform;The recording and playback module uses the integrated recording and playback chip ISD1820 to record and play audio for a certain duration.The experimental results show that the synthesizer achieves 16 channels of sound sequence output and generates three types of oscillation waveforms:serrated wave,rectangular wave,and sine wave.The maximum output power of the audio amplifier can reach 2 W,with no obvious distortion in the output waveform,adjustable volume,and a recording time of up to 20 seconds.

关 键 词：电子音乐合成器 信号处理 信号转换 功率放大 

分 类 号：TN912[电子电信—通信与信息系统]