數(shù)字音樂盒的課程設(shè)計畢業(yè)論文(編輯修改稿)
2025-07-20 18:31 本頁面
【文章內(nèi)容簡介】 2 是否按下停止切換上一首切換下一首播放音樂開始計時停止音樂停止計時NNNYYYY開始圖 9 流程圖8 程序設(shè)計對音樂do re mi fa so la si分別編碼為1~7，重音do編為8，重音re編為9，停頓編為0。播放長度以十六分音符為單位（在本程序中為165ms） ，一拍即四分音符等于4個十六分音符，編為4,其它的播放時間以此類推。音調(diào)作為編碼的高4位，而播放時間作為低4位，如此音調(diào)和節(jié)拍就構(gòu)成了一個編碼。以0xff作為曲譜的結(jié)束標(biāo)志 [7]。舉例1：音調(diào)do,發(fā)音長度為兩拍，即二分音符，將其編碼為0x18。舉例2：音調(diào)re,發(fā)音長度為半拍，即八分音符，將其編碼為0x22歌曲播放的設(shè)計。先將歌曲的簡譜進行編碼，儲存在一個數(shù)據(jù)類型為unsigned char的數(shù)組中。程序從數(shù)組中取出1個數(shù)，然后分離出高4位得到音調(diào)，接著找出相應(yīng)的值賦給定時器0，使之定時操作蜂鳴器，得出相應(yīng)的音調(diào)；接著分離出該數(shù)的低4位，得到延時時間，接著調(diào)用軟件延時。程序：include include define uchar unsigned chardefine uint unsigned intuchar m,n。 uchar i,timecount=0,timesec=0,timemin=0,timecheck=0。char r0=2。sbit beepIO=P3^0。typedef unsigned char BYTE。typedef unsigned int WORD。typedef bit BOOL 。 sbit rs = P2^0。sbit rw = P2^1。sbit ep = P2^2。sbit pausekey=P1^1。uchar k,q,f。uchar code dis1[] ={1 ji mo sha zhou}。 uchar code dis2[] = {2 tong hua}。uchar code dis3[] ={3 qian nian lian}。uchar code T[49][2]={{0,0},{0xF8,0x8B},{0xF8,0xF2},{0xF9,0x5B},{0xF9,0xB7},{0xFA,0x14},{0xFA,0x66},{0xFA,0xB9},{0xFB,0x03},{0xFB,0x4A},{0xFB,0x8F},{0xFB,0xCF},{0xFC,0x0B},{0xFC,0x43},{0xFC,0x78},{0xFC,0xAB},{0xFC,0xDB},{0xFD,0x08},{0xFD,0x33},{0xFD,0x5B},{0xFD,0x81},{0xFD,0xA5},{0xFD,0xC7},{0xFD,0xE7},{0xFE,0x05},{0xFE,0x21},{0xFE,0x3C},{0xFE,0x55},{0xFE,0x6D},{0xFE,0x84},{0xFE,0x99},{0xFE,0xAD},{0xFE,0xC0},{0xFE,0x02},{0xFE,0xE3},{0xFE,0xF3},{0xFF,0x02},9{0xFF,0x10},{0xFF,0x1D},{0xFF,0x2A},{0xFF,0x36},{0xFF,0x42},{0xFF,0x4C},{0xFF,0x56},{0xFF,0x60},{0xFF,0x69},{0xFF,0x71},{0xFF,0x79},{0xFF,0x81}}。uchar code music1[][2]={{0,4}, {22,4},{22,4},{17,4},{15,4},{15,4},{17,12},{15,4},{15,2},{17,2},{15,4},{13,4},{13,4},{15,12},{0,4},{20,4},{20,4},{20,4},{17,4},{20,4},{20,4},{20,4},{17,4},{22,4},{17,4},{17,4},{15,4},{15,4},{17,12},{22,4},{22,4},{17,4},{15,4},{15,4},{17,12},{15,4},{15,2},{17,2},{15,4},{13,4},{13,4},{15,12},{20,4},{20,4},{20,2},{17,2},{17,4},{20,4},{20,4},{20,2},{17,2},{17,2},{17,2},{24,4},{20,4},{20,2},{17,2},{17,4},{20,4},{22,12},{17,4},{22,4},{25,4},{25,4},{17,4},{22,4},{25,8},{24,4},{22,2},{24,2},{22,4},{20,4},{15,4},{17,12},{15,4},{15,4},{15,4},{10,4},{15,4},{17,4},{20,8},{17,4},{24,4},{24,4},{20,4},{15,4},{17,12},{17,4},{22,4},{25,4},{25,4},{17,4},{22,4},{25,8},{29,4},{27,2},{29,2},{27,4},{25,4},{25,4},{27,12},{29,4},{29,2},{27,4},{25,4},{27,6},{27,2},{25,4},{24,4},{20,4},{20,2},{17,2},{20,4},{20,2},{22,2},{22,16},{0xFF,0xFF}}。uchar code music2[][2]={{0,4}, {16,6},{19,2},{19,6},{16,2},{14,6},{0,10},{16,6},{19,2},{19,6},{16,2},{14,8},{0,8},{26,8},{21,6},{24,2},{23,6},{21,2},{19,8},{21,16},{0,8},{16,6},{19,2},{19,6},{16,2},{14,8},{0,8},{26,8},{21,6},{23,2},{21,14},{24,6},{23,2},{21,6},{19,2},{16,6},{14,2},{13,8},{14,16},{0,4},{19,6},{19,2},{21,6},{21,2},{23,8},{21,4},{0,4},{19,6},{19,2},{16,6},{19,2},{16,8},{14,6},{0,4},{19,6},{19,2},{21,6},{21,2},{23,8},{21,4},{0,4},{19,6
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