资源描述:
《音乐发生器论文设计》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、单片机音乐发声器河南农业职业学院2009-6-19单片机音乐发声器摘要近年来随着科技的飞速发展,单片机的应用正在不断地走向深入,同时带动传统控制检测日新月异更新。在实时检测和自动控制的单片机应用系统中,单片机往往是作为一个核心部件来使用,仅单片机方面知识是不够的,还应根据具体硬件结构,以及针对具体应用对象特点的软件结合,加以完善。现当今,利用单片机控制音乐播放多不胜举.音乐芯片也相当之多,而利用单片机存储音乐,控制播放最为广泛.它有功能多﹑价格优﹑外围电路简单的特点,很受音乐爱好者及音乐芯片制造商的青昧.本文中,用单片
2、机芯片及少数外围电路控制音乐播放。对于单片机产生音乐,关键是控制频率的输出.我们知道,不同的声音对应不同的频率,产生有规律的频率输出就可以得到相应规律的声音.有8个基本音符:do﹑re﹑mi﹑fa﹑so﹑la﹑xi﹑do,八个不同的音符对应着不同的频率.只要我们对照音符输出相对应的频率,就可以产生美妙的音乐.本文中采用了T0中断方式产生不同频率,并用按键控制音乐的播放和停止。用三极管、电阻等组成的放大电路驱动扬声器。关键词单片机/音乐/按键/频率熊雨锋联系方式:15978441891QQ:693646908单片机音乐发
3、声器ABSTRACTInrecentyearsalongwithscienceandtechnologydevelopfast,theapplicationofsingleflatmachineismovingtowardsthoroughcontinuously,atthesametimedrivetraditionalcontroldetectiondaythebenefitofnewmoonupdate.Intheonlyflatmachineapplicationsystemoftheautomaticcont
4、rolanddetectionofrealtime,onlyflatmachineisoftentouseasakeyparts,onlysingleflatmachineaspectknowledgeisinsufficient,returnshouldbasisspecificlyhardwarestructure,aswellasaimatthesoftwarethatappliesobjectcharacteristicspecificlycombination,perfect.Now,musicplaying
5、isalotswhichmicrochipcontrol.Themusicchipisverymuch.Butitisatbesttoapplythemicrochip.Ithasthecharacteristicwhichfunctionismuchandpriceisalittleandout’scircuitisafew.Soitisusedbypeoplewholikemusicandmanufacturethemusicchip.Thischapter,usingmicrochipandafewoutcirc
6、uitcontroltheplayingofmusic,andgivebirthtomusicofhappybirthday,withinglampionswichoverworking.Musicandlighthavesynchronouseffect.Forthemicrochipgivingbirthtomusic,theimportanceiscontrollingoutputoffrequence.theoutputoffrequencewhichhasrulecangainmusicthatruleacc
7、ordingly.Haveeightbasicmusic’sbits:do,re,mi,fa,so,la,xi,do,eightbasicbitshavedifferentfrequence.Soifweoutputfrequenceofmusicbasicbitaccordingly,musiccangainaccordinglytoo.TheoutputoffrequenceusedmethodofT0stoppinginthischapter,andtwokeypresscontrolplayingandstop
8、.Wecontrolmusicbymicrochip,thekeypresscontrolplaying,andcontrolspeakerbyin-phaseblowingupmethodofcountingblowingup.KEYWORDSsingleflatmachine,music,keypress,frequency2