如何制作和播放程序生成的Chi声

// 1 second chirp
float samples[44100];

float startFreq = 1400;
float endFreq = 1100;

float thisFreq;
int x;
for(x = 0; x < 44100; x++)
{
    float lerp = float(float(x) / 44100.0);

    thisFreq = (lerp * endFreq) + ((1 - lerp) * startFreq);
    samples[x] = sin(thisFreq * x);
}

    alGenBuffers (1, &buffer); 
    alBufferData (buffer, AL_FORMAT_MONO16, buf, size, 8000); 
    alGenSources (1, &source); 

    ALint state; 

    // attach buffer and play 
    alSourcei (source, AL_BUFFER, buffer); 
    alSourcePlay (source); 

    do 
    { 
        wait (200); 
        alGetSourcei (source, AL_SOURCE_STATE, &state); 
    } 
    while ((state == AL_PLAYING) && play); 

    alSourceStop(source); 
    alDeleteSources (1, &source); 

    delete (buf) 
}