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VC++播放音訊檔案和音訊資料的方法

1 int rate=1000; //刺激率 2 int sampleRate = 44100; //取樣率 3 const int NUMPTS = (int) (44100 * 0.5); // 0.5s 4 short int waveOut[NUMPTS];//音訊資料 5 6 //內容 7 for (int i=0;i<NUMPTS;i++) 8 { 9 waveOut[i] = (short int)ceil(sin(2*3.1415926*rate*i/sampleRate)*20000); 10 } 11 //格式 12 WAVEFORMATEX pFormat; 13 pFormat.wFormatTag=WAVE_FORMAT_PCM;
14 //simple,uncompressed format 15 pFormat.nChannels=1;//1=mono, 2=stereo 16 pFormat.nSamplesPerSec=sampleRate; // 44100 17 pFormat.nAvgBytesPerSec=sampleRate*2; 18 // = nSamplesPerSec * n.Channels * wBitsPerSample/8 19 pFormat.nBlockAlign=2; // = n.Channels * wBitsPerSample/8 20 pFormat.wBitsPerSample=16; 21 //16 for high quality, 8 for telephone-grade
22 pFormat.cbSize=0;