C++中發聲函式Beep詳解
阿新 • • 發佈:2019-01-09
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以前,我聽過一個神犇用C++函式做的音樂,當時的心裡就十分激動:哇,好厲害啊,好神啊。
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這次,我終於通過自己無助的盲目的摸索、研究,寫出了這篇文章(此時我的內心是雞凍的233)
下面是正文:
- 其實啊,Windows API 就提供了一個這樣奇妙的發音函式,它就是Beep函式。Beep可以通過控制主機板揚聲器的發聲頻率和節拍來演奏美妙的旋律,本文根據音樂簡譜來演奏幾首優美的歌曲,用以展現Beep的瘋狂魅力。
首先我們來Beep的函式原型:
BOOL Beep(
DWORD dwFreq;
DWORD dwDuration;
);
引數說明:
dwFreq
指定要發出的頻率(HZ)dwDuration
指定發音的時長,以毫秒為單位。
Beep的實際應用
- 比如說我要發do這個音,do應該是523hz,且如果要發一拍的話,就相當於400毫秒。
- 那這個函式就成了這樣:
Beep(523,400);
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但是,如果我們要連續的發出多個音的話,比如說像這樣:
Beep(523,400);//do Beep(578,400);//re Beep(659,400);//mi
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那豈不是太麻煩了,所以,我建議大家用define函式巨集定義一下這些音,比如說這樣:
#define re 578
和#define mi 659
,這樣,上面的三行語句就簡化了成這樣:Beep(do,400); Beep(re,400); Beep(mi
最終,給親們送上一份表(借別人的 劃去)
其中,q字首為低音,1字尾為高音,s字首為半音階#define qdo 262 #define qre 294 #define qmi 330 #define qfa 349 #define qso 392 #define qla 440 #define qsi 494 #define do 523 #define re 578 #define mi 659 #define fa 698 #define so 784 #define la 880 #define si 988 #define do1 1046 #define re1 1175 #define
最後,(嘿,同志們,別跑,後面還有彩蛋呢!)
好吧,是一首用Beep函式演奏的天空之城
#include <cstdio>
#include <windows.h>
#define qdo 262
#define qre 294
#define qmi 330 //q字首為低音,1字尾為高音,s字首為半音階
#define qfa 349
#define qso 392
#define qla 440
#define qsi 494
#define do 523
#define re 578
#define mi 659
#define fa 698
#define so 784
#define la 880
#define si 988
#define do1 1046
#define re1 1175
#define mi1 1318
#define fa1 1480
#define so1 1568
#define la1 1760
#define si1 1976
#define sqdo 277
#define sqre 311
#define sqfa 370
#define sqso 415
#define sqla 466
#define sdo 554
#define sre 622
#define sfa 740
#define sso 831
#define sla 932
#define sdo1 1046
#define sre1 1245
#define sfa1 1480
#define sso1 1661
#define sla1 1865
int main()
{
int pai=400,ban=200;
int ting=128;
Sleep(1000);
Beep(la,ban);
Beep(si,ban);
Sleep(ting);
Beep(do1,pai+ban);
Beep(si,ban);
Sleep(ting);
Beep(do1,pai);
Sleep(ting);
Beep(mi1,pai);
Sleep(ting);
Beep(si,3*pai);
Sleep(ting);
Beep(mi,ban);
Beep(mi,ban);
Beep(la,ban+pai);
Beep(so,ban);
Sleep(ting);
Beep(la,pai);
Sleep(ting);
Beep(do1,pai);
Sleep(ting);
Beep(so,2*pai);
Sleep(ting);
Sleep(pai);
Beep(mi,ban);
Sleep(ting/2);
Beep(mi,ban);
Sleep(ting/2);
Beep(fa,pai+ban);
Beep(mi,ban);
Sleep(ting);
Beep(fa,ban);
Beep(do1,ban+pai);
Sleep(ting);
Beep(mi,2*pai);
Sleep(ting);
Sleep(ban);
Beep(do1,ban);
Sleep(ting/2);
Beep(do1,ban);
Sleep(ting/2);
Beep(do1,ban);
Sleep(ting/2);
Beep(si,ban+pai);
Beep(sfa,ban);
Sleep(ting);
Beep(sfa,pai);
Beep(si,pai);
Sleep(ting);
Beep(si,2*pai);
Sleep(ting);
Sleep(pai);
Beep(la,ban);
Beep(si,ban);
Sleep(ting);
Beep(do1,pai+ban);
Beep(si,ban);
Sleep(ting);
Beep(do1,pai);
Sleep(ting);
Beep(mi1,pai);
Sleep(ting);
Beep(si,2*pai);
Sleep(ting);
Sleep(pai);
Beep(mi,ban);
Sleep(20);
Beep(mi,ban);
Sleep(ting);
Beep(la,pai+ban);
Beep(so,ban);
Sleep(ting);
Beep(la,pai);
Sleep(ting);
Beep(do1,pai);
Sleep(ting);
Beep(so,3*pai);
Sleep(ting+ban);
Beep(mi,ban);
Sleep(ting/2);
Beep(fa,pai);
Sleep(ting);
Beep(do1,ban);
Beep(si,ban);
Sleep(20);
Beep(si,pai);
Sleep(ting);
Beep(do1,pai);
Sleep(ting);
Beep(re1,ban);
Sleep(20);
Beep(re1,ban);
Sleep(20);
Beep(mi1,ban);
Sleep(ting/2);
Beep(do1,pai);
Sleep(ting+pai);
Beep(do1,pai);
Beep(si,ban);
Sleep(ting);
Beep(la,ban);
Sleep(20);
Beep(la,ban);
Sleep(ting);
Beep(si,pai);
Sleep(ting);
Beep(sso,pai);
Sleep(ting);
Beep(sso,2*pai);
Sleep(ting+pai);
Beep(do1,ban);
Beep(re1,ban);
Sleep(ting);
Beep(mi1,pai+ban);
Beep(re1,ban);
Sleep(ting);
Beep(mi1,pai);
Sleep(ting);
Beep(fa1,pai);
Sleep(ting);
Beep(re1,2*pai);
Sleep(pai+ting);
Beep(so,ban);
Sleep(20);
Beep(so,ban);
Sleep(ting);
Beep(do1,ban);
Beep(si,ban);
Sleep(ting);
Beep(do1,pai);
Sleep(ting);
Beep(mi1,pai);
Sleep(ting);
Beep(mi1,2*pai);
Sleep(ting+2*pai);
Beep(la,ban);
Beep(si,ban);
Sleep(ting);
Beep(do1,pai);
Sleep(ting);
Beep(si,pai);
Sleep(ting);
Beep(re1,ban);
Sleep(20);
Beep(re1,ban);
Sleep(ting);
Beep(do1,pai+ban);
Beep(so,ban);
Sleep(20);
Beep(so,pai);
Sleep(pai+ting);
Beep(fa1,pai);
Sleep(ting);
Beep(mi1,pai);
Sleep(ting);
Beep(re1,pai);
Sleep(ting);
Beep(do1,pai);
Sleep(ting);
Beep(mi1,4*pai);
Beep(mi1,pai*2);
Sleep(pai+ting);
Beep(mi1,pai);
Sleep(ting);
Beep(la1,2*pai);
Sleep(ting);
Beep(so1,pai);
Sleep(ting);
Beep(so1,pai);
Sleep(ting);
Beep(mi1,ban);
Sleep(ting/2);
Beep(re1,ban);
Sleep(ting);
Beep(do1,pai);
Sleep(ting+ban);
Beep(do1,ban);
Sleep(ting);
Beep(re1,pai);
Sleep(ting);
Beep(do1,ban);
Beep(re1,ban);
Sleep(20);
Beep(re1,ban);
Sleep(ting);
Beep(so1,pai);
Sleep(ting);
Beep(mi1,2*pai);
Sleep(ting+pai);
Beep(mi,pai);
Sleep(ting);
Beep(la1,2*pai);
Sleep(ting);
Beep(so1,2*pai);
Sleep(ting);
Beep(mi1,ban);
Beep(re1,ban);
Sleep(ting);
Beep(do1,2*pai);
Sleep(ting+ban);
Beep(do1,ban);
Sleep(ting);
Beep(re1,pai);
Sleep(ting);
Beep(do1,ban);
Beep(re1,ban);
Sleep(20);
Beep(re1,ban);
Sleep(ting);
Beep(si,pai);
Sleep(ting);
Beep(la,2*pai);
Sleep(ting);
Beep(la,ban);
Beep(si,ban);
Beep(do1,pai+ban);
Beep(si,ban);
Sleep(ting);
Beep(do1,pai);
Sleep(ting);
Beep(mi1,pai);
Sleep(ting);
Beep(si,3*pai);
Sleep(ting);
Beep(mi,ban);
Beep(mi,ban);
Beep(la,ban+pai);
Beep(so,ban);
Sleep(ting);
Beep(la,pai);
Sleep(ting);
Beep(do1,pai);
Sleep(ting);
Beep(so,2*pai);
Sleep(ting);
Sleep(pai);
Beep(mi,ban);
Sleep(ting/2);
Beep(mi,ban);
Sleep(ting/2);
Beep(fa,pai+ban);
Beep(mi,ban);
Sleep(ting);
Beep(fa,ban);
Beep(do1,ban+pai);
Sleep(ting);
Beep(mi,2*pai);
Sleep(ting);
Sleep(ban);
Beep(do1,ban);
Sleep(ting/2);
Beep(do1,ban);
Sleep(ting/2);
Beep(do1,ban);
Sleep(ting/2);
Beep(si,ban+pai);
Beep(sfa,ban);
Sleep(ting);
Beep(sfa,pai);
Beep(si,pai);
Sleep(ting);
Beep(si,2*pai);
Sleep(ting);
Sleep(pai);
Beep(la,ban);
Beep(si,ban);
Sleep(ting);
Beep(do1,pai+ban);
Beep(si,ban);
Sleep(ting);
Beep(do1,pai);
Sleep(ting);
Beep(mi1,pai);
Sleep(ting);
Beep(si,2*pai);
Sleep(ting);
Sleep(pai);
Beep(mi,ban);
Sleep(20);
Beep(mi,ban);
Sleep(ting);
Beep(la,pai+ban);
Beep(so,ban);
Sleep(ting);
Beep(la,pai);
Sleep(ting);
Beep(do1,pai);
Sleep(ting);
Beep(so,3*pai);
Sleep(ting+ban);
Beep(mi,ban);
Sleep(ting/2);
Beep(fa,pai);
Sleep(ting);
Beep(do1,ban);
Beep(si,ban);
Sleep(20);
Beep(si,pai);
Sleep(ting);
Beep(do1,pai);
Sleep(ting);
Beep(re1,ban);
Sleep(20);
Beep(re1,ban);
Sleep(20);
Beep(mi1,ban);
Sleep(ting/2);
Beep(do1,pai);
Sleep(ting+pai);
Beep(la,4*pai);
Sleep(1000);
main();
}