音乐转换成16进制写进单片机的方法

这个需要自己把乐谱转换为十六进制数据: 相关知识: 1.要产生音频脉冲,只要算出某一音频的周期(1/频率),然后将此周期除以2,即为半周期的时间。利用定时器计时这个半周期时间,每当计时到后就将输出脉冲的I/O反相,然后重复计时此半周期时间再对I/O反相,就可在I/O脚上得到此频率的脉冲。 2.利用8051的内部定时器使其工作在计数器模式MODE1下,改变计数值TH0及TL0以产生不同频率的 方法 快递客服问题件处理详细方法山木方法pdf计算方法pdf华与华方法下载八字理论方法下载 。 3.例如频率为523Hz,其周期T=1/523=1912us,因此只要令计数器计时956us/1us=956,在每计数956次时将I/O反相,就可得到中音DO(523Hz)。 计数脉冲值与频率的关系公式如下: N=Fi÷2÷Fr N:计数值; Fi:内部计时一次为1us,故其频率为12MHz; Fr:要产生的频率; 4.其计数值的求法如下: T=65536-N=65536-Fi÷2÷Fr 例如:设K=65536,F=1000000=Fi=1MHz,求低音DO(261MHz)、中音DO(523MHz)、高音DO(1046MHz)的计数值。 T=65536-N=65536-Fi÷2÷Fr=6÷2÷Fr=6/Fr 低音DO的T=6/262=63627 中音DO的T=6/523=64580 高音DO的T=6/1047=65059 5.C调各音符频率与计数值T的对照 表 关于同志近三年现实表现材料材料类招标技术评分表图表与交易pdf视力表打印pdf用图表说话 pdf 如下: 表1 C调各音符频率与计数值T的对照表 音符 低1DO 频率(Hz)简谱码(T值)音符频率(Hz)简谱码(T值) 262 63628 #4FA# 740 64860 #1DO# 277 63731 中5SO 784 64898 低2RE #2RE# 294 63835 #5SO# 831 64934 311 63928 中6LA 880 64968 低3M 330 64021 #6 932 64994 低4FA 349 64103 中7SI 988 65030 #4FA# 370 64185 高1DO 1046 65058 低5SO 392 64260 #1DO# 1109 65085 #5SO# 415 64331 高2RE 1175 65110 低6LA 440 64400 #2RE# 1245 65134 #6 466 64463 高3M 1318 65157 低7SI 494 64524 高4FA 1397 65178 中1DO 523 64580 #4FA# 1480 65198 #1DO# 554 64633 高5SO 1568 65217 中2RE 587 64684 #5SO# 1661 65235 #2RE# 622 64732 高6LA 1760 65252 中3M 659 64777 #6 1865 65268 中4FA 698 64820 高1967 65283 表2 节拍与节拍码对照 节拍码节拍数节拍码节拍数 1 1/4拍1 1/8拍 2 2/4拍2 1/4拍 3 3/4拍3 3/8拍 4 1拍4 1/2拍 5 1又1/4拍5 5/8拍 6 1又1/2拍6 3/4拍 8 2拍8 1 A 2又1/2拍A 1又1/4拍 C 3拍C 1又1/2拍 F 3又3/4拍 表3各调1/4节拍的时间设定各调1/4节拍的时间设定 曲调值DELAY 曲调值DELAY 调4/4 125毫秒调4/4 62毫秒 调3/4 187毫秒调3/4 94毫秒 调2/4 250毫秒调2/4 125毫秒 1/4拍的延迟时间=187毫秒 DELAY: MOV R7,#02 D2: MOV R4,#187 别的延迟值,只需修改这儿的值为相应值,即可。 D3: MOV R3,#248 DJNZ R3,$ DJNZ R4,D3 DJNZ R7,D2 DJNZ R5,DELAY 节拍值放在R5,决定节拍 RET 建立音乐的步骤: 1. 先把乐谱的音符找出,然后建立T值表的顺序。 2. 把T值表建立在TABLE1,构成发音符是计数值放在“TABLE”。 3. 简谱码(音符)为高位,节拍为(节拍数)为低4位,音符节拍码放在程序的“TABLE”处。 相关知识: 每一音符使用1个字节,字节的高4位代表音符的高低,低4位代表音符的节拍,表2为节拍与节拍码的对照。如果1拍为0.4秒,1/4拍是0.1秒,只要设定延迟时间就可求得节拍的时间。假使1/4拍为1DELAY,则1拍应为4DELAY,以此类推。所以只要求得1/4拍的DEALY时间,其余的节拍就是它的倍数,如表3为1/4和1/8节拍的时间设定。 简谱发音简谱码T值 5 低音SO 1 64260 6 低音LA 2 64400 7 低音TI 3 64524 1 中音DO 4 64580 2 中音RE 5 64684 3 中音MI 3 64777 4 中音FA 7 64820 5 中音SO 8 64898 6 中音LA 9 64968 7 中音TI A 65030 1 高音DO B 65058 2 高音RE C 65110 3 高音MI D 65157 4 高音FA E 65178 5 高音SO F 65217 不发音0 节拍码节拍数 1 1/4拍 2 2/4拍 3 3/4拍 4 1拍 5 1又1/4拍 6 1又1/2拍 8 2拍 A 2又1/2拍 C 3拍 F 3又3/4拍 表4 简谱对应的简谱码、T值、节拍数 #include "reg51.h" #define uint unsigned int #define uchar unsigned char uchar * TABLE ; code uint TABLE1 [15]={64260,64400,64524,64580, 64684,64777,64820,64898, 64968,65030,65058,65110, 65157,65178,65217}; code uchar SONG [ ]={ //1. 迟来的爱 //0 0x08,0x08, //1 0x02,0x12,0x42,0x62,0x52,0x42,0x21,11, 0x18,0x18, 0x02,0x22,0x42,0x82,0x92,0x82,0x61,0x51,0x42, 0x58,0x58, //2 0x66,0x51,0x61,0x84,0x62,0x82, 0x52,0x62,0x42,0x52,0x28, 0x52,0x42,0x52,0x62,0x94,0x81,0x91,0x81,0x61, 0x1C,0x12,0x82, //3 0x68,0x02,0x92,0x82,0x42, 0x5C,0x12,0x62, 0x58,0x02,0x42,0x51,0x41,0x22, 0x4C,0x62,0x52, //4 0x66,0x82,0x92,0x82,0x61,0x51,0x41,0x51, 0x6C,0x52,0x62, 0x53,0x63,0x52,0x42,0x42,0x22, 0x1C,0x12,0x22, //5 0x42,0x44,0x51,0x61,0x82,0x84,0x61,0x81, 0x96,0x82,0x66,0x51,0x61, 0x56,0x42,0x22,0x42,0x82,0x62, 0x5C,0x62,0x52, //6 0x66,0x82,0x92,0x82,0x61,0x51,0x41,0x51, 0x6C,0x52,0x62, 0x56,0x62,0x52,0x42,0x42,0x22, 0x1C,0x12,0x22, //7 0x42,0x44,0x51,0x61,0x82,0x84,0x61,0x81, 0x96,0x82,0x66,0x51,0x61, 0x56,0x62,0x92,0x82,0x62,0x52, 0x4C,0x62,0x61,0x81, //8 0x9C,0x81,0x91,0x81,0x61, 0x6C,0x82,0x62, 0x56,0x42,0x24,0x42,0x52, 0x6C,0x62,0x61,0x81, //9 0x9C,0xB2,0x92, 0x8C,0x82,0x92, 0xB2,0xB2,0xB2,0x92,0xD4,0xC1,0xD1,0xC1,0xB1, 0xCC,0xB2,0xB1,0xC1, //A 0xDC,0xD2,0xC1,0xB1, 0x9C,0x92,0x91,0xC1, 0x92,0x84,0x92,0x82,0x62,0x51,0x61,0x51,0x41, 0x48,0x48, //B 0x42,0x41,0x51,0x66,0x82,0x91,0xB1, 0x92,0x86,0x88, 0x42,0x41,0x51,0x66,0x42,0x41,0x51, 0x22,0x16,0x18, 0x86,0x62,0x58, //C 0x83,0x91,0x62,0x82,0x58, 0x52,0x62,0x52,0x42,0x22,0x12,0x62,0x52, 0x4C,0x62,0x52, //6 0x66,0x82,0x92,0x82,0x61,0x51,0x41,0x51, 0x6C,0x52,0x62, 0x56,0x62,0x52,0x42,0x42,0x22, 0x1C,0x12,0x22, //7 0x42,0x44,0x51,0x61,0x82,0x84,0x61,0x81, 0x96,0x82,0x66,0x51,0x61, 0x56,0x62,0x92,0x82,0x62,0x52, 0x4C,0x62,0x61,0x81, //8 0x9C,0x81,0x91,0x81,0x61, 0x6C,0x82,0x62, 0x56,0x42,0x24,0x42,0x52, 0x6C,0x62,0x61,0x81, //9 0x9C,0xB2,0x92, 0x8C,0x82,0x92, 0xB2,0xB2,0xB2,0x92,0xD4,0xC1,0xD1,0xC1,0xB1, 0xCC,0xB2,0xB1,0xC1, //A 0xDC,0xD2,0xC1,0xB1, 0x9C,0x92,0x91,0xC1, 0x92,0x84,0x92,0x82,0x62,0x51,0x61,0x51,0x41, 0x4C,0x62,0x61,0x81, //8 0x9C,0x81,0x91,0x81,0x61, 0x6C,0x82,0x62, 0x56,0x42,0x24,0x42,0x52, 0x6C,0x62,0x61,0x81, //9 0x9C,0xB2,0x92, 0x8C,0x82,0x92, 0xB2,0xB2,0xB2,0x92,0xD4,0xC1,0xD1,0xC1,0xB1, 0xCC,0xB2,0xB1,0xC1, //A 0xDC,0xD2,0xC1,0xB1, 0x9C,0x92,0x91,0xC1, 0x92,0x84,0x92,0x82,0x62,0x51,0x61,0x51,0x41, 0x4C,0x62,0x61,0x81, //D 0x66,0x51,0x61,0x86,0x61,0x81, 0x52,0x62,0x52,0x42,0x28, 0x82,0x91,0x01,0x62,0x11,0x52,0x11,0x01,0x62,0x54, 0x48,0x48,0x00}; uchar ljsz; uchar jpm; uchar yfm; uchar t0 =0; uint i=0; sbit Speaker =P1^0; uint k; void Delay1() { for ( k=0;k<20000;k++); } void Lignt( ) { uchar t; for(t=0;t<10;t++) { P2=0xff; Delay1(); P2=0x00; Delay1(); } } void Lignt1( ) { P2=0xaa; Delay1(); P2=0x55; Delay1(); } void Delay(uchar t0)//延时 { while(t0--) //决定节拍 Lignt1(); } void Delay2(uchar w0)//延时 { while(w0--) //决定节拍 Lignt(); } void T0Int() interrupt 1//TIMER0 { TL0 = ljsz; TH0 = hjsz; Speaker=!Speaker; } void ExtInt0() interrupt 0//INT0 { if(t0>10) t0=0; i=0; switch(t0++) { case 0 : TABLE=SONG;break; //选择第1首 case 1 : TABLE=SONG1;break;//选择第2首 case 2 : TABLE=SONG2;break;//选择第3首 case 3 : TABLE=SONG3;break;//选择第4首 case 4 : TABLE=SONG4;break;//选择第5首 case 5 : TABLE=SONG5;break;//选择第6首 case 6 : TABLE=SONG6;break;//选择第7首 case 7 : TABLE=SONG7;break;//选择第8首 case 8 : TABLE=SONG8;break;//选择第9首 case 9 : TABLE=SONG9;break;//选择第10首} } void songsing()//发音程序 { i=0; while(TABLE[i]) { jpm=TABLE[i]&0x0f; //节拍值 yfm=(TABLE[i]>>0x04)&0x0f;//简谱值 if(yfm) //简谱为1,取计数值 { yfm=yfm-1; hjsz=(uchar)(TABLE1[yfm]>>0x08);//取计数值高字节 TH0 = hjsz; ljsz=(uchar)(TABLE1[yfm]); //取计数值低字节 TL0 = ljsz; TR0 = 1; //启动TIMER0 } else TR0 = 0; //简谱为0,不发音 Delay(jpm); //节拍延时 i++; } } void main(void) { TMOD =0X01;//设TIMER0在MODE1 TCON =0X01;//外部中断INT0,下降沿触发 IE =0x83;//开中断(INT0,TIMER0) IP =0x00;//设置中断优先级 TABLE=SONG0; while(1) { Lignt( ); songsing();//调用发音程序 TR0 = 0;//停止TIMER0 Delay2(1); TABLE=SONG0; songsing(); } }