采集声卡信号，显示其频谱图，为什么程序在别的机器上没有正常运行？
在网上下的一个音频频谱实时显示程序（有源代码），它采集声卡信号，显示其频谱图，为什么程序在别的机器上没有正常运行？我在自己的电脑上编译运行该程序，可以正确运行，程序实时采集了声卡的信号并对其进行处理（包括fft变换等等），最后将其频谱图显示出来。但是换了台电脑试就不行了，程序能运行，但是频谱图没有显示，改了程序代码中的一些参数（比如采样频率），但还是不行。把那个程序的下载地址及其关键代码帖了出来，请大家帮忙看看，指点指点，谢谢！
程序下载地址：
http://www.pudn.com/downloads70/sourcecode/windows/other/detail251397.html
程序关键代码：
//全局变量
CSoundInSoundIn;
BOOLCSndApp::InitInstance()
{
//......
SoundIn.OpenMic();
returnTRUE;
}
CSoundIn::CSoundIn()
{
oldtim=0;
newtim=0;
m_NbMaxSamples=2048;
m_CalOffset=DEFAULT_CAL_OFFSET;
m_CalGain=DEFAULT_CAL_GAIN;
m_WaveInSampleRate=44100;//11025;//
Tm1=Tm2=fr=fi=Pm=Am=Aver=NULL;
}
MMRESULTCSoundIn::OpenMic()
{
MMRESULTresult;
fr=newdouble;
fi=newdouble;
Pm=newdouble;
Am=newdouble;
Tm1=newdouble;
Tm2=newdouble;
Aver=newdouble;
Amave=newdouble;
for(inti=0;i <m_NbMaxSamples/2;i++)
Amave=0;
result=waveInGetNumDevs();
if(result==0)
{
AfxMessageBox("NoSoundDevice");
returnresult;
}
//testforMicavailable
result=waveInGetDevCaps(0,&m_WaveInDevCaps,sizeof(WAVEINCAPS));
if(result!=MMSYSERR_NOERROR)
{
AfxMessageBox(_T("Cannotdeterminesoundcardcapabilities!"));
}
//TheSoundDeviveisOKnowwecancreateanEvent andstarttheThread
m_WaveInEvent=CreateEvent(NULL,FALSE,FALSE,"WaveInThreadEvent");
m_TerminateThread=FALSE;
m_WaveInThread=AfxBeginThread(WaveInThreadProc,this,THREAD_PRIORITY_NORMAL,0,CREATE_SUSPENDED,NULL);
m_WaveInThread- >m_bAutoDelete=TRUE;
m_WaveInThread- >ResumeThread();
//initformat
WaveInitFormat(1/*mono*/,m_WaveInSampleRate/*khz*/,16/*bits*/);
//OpenInput
result=waveInOpen(&m_WaveIn,0,&m_WaveFormat,(DWORD)m_WaveInEvent,NULL,CALLBACK_EVENT);
if(result!=MMSYSERR_NOERROR)
{
AfxMessageBox(_T("CannotOpenSoundInputDevice!"));
returnresult;
}
//prepareheader
/*
typedefstruct{ LPSTR lpData;
DWORD dwBufferLength;
DWORD dwBytesRecorded;
DWORD dwUser;
DWORD dwFlags;
DWORD dwLoops;
structwavehdr_tag*lpNext;
DWORD reserved;
}WAVEHDR;
*/
m_SizeRecord=m_NbMaxSamples;
m_WaveHeader.lpData=(CHAR*)&InputBuffer;
m_WaveHeader.dwBufferLength=m_SizeRecord*2;
m_WaveHeader.dwFlags=0;
result=waveInPrepareHeader(m_WaveIn,&m_WaveHeader,
sizeof(WAVEHDR));
if((result!=MMSYSERR_NOERROR) ¦¦
(m_WaveHeader.dwFlags!=WHDR_PREPARED))
{
AfxMessageBox(_T("CannotPrepareHeader!"));
returnresult;
}
result=waveInAddBuffer(m_WaveIn,&m_WaveHeader,sizeof(WAVEHDR));
if (result!=MMSYSERR_NOERROR)
{
AfxMessageBox(_T("CannotAddBuffer!"));
returnresult;
}
//alliscorrectnowwecanstarttheprocess
result=waveInStart(m_WaveIn);
if (result!=MMSYSERR_NOERROR)
{
AfxMessageBox(_T("CannotStartWaveIn!"));
returnresult;
}
returnresult;
}
#definePT_S((CSoundIn*)pParam)
UINTWaveInThreadProc(void*pParam)
{
UINTresult;
UINTFirstPass=TRUE;
if(FirstPass)
result=WaitForSingleObject(((CSoundIn*)pParam)- >m_WaveInEvent,INFINITE);
FirstPass=FALSE;
while(!((CSoundIn*)pParam)- >m_TerminateThread)
{
result=WaitForSingleObject(((CSoundIn*)pParam)- >m_WaveInEvent,INFINITE);
if((result==WAIT_OBJECT_0)&&(!((CSoundIn*)pParam)- >m_TerminateThread))
{
PT_S- >AddBuffer(); //Toggleaschangedstatehere!Togglepointtothejustreceivedbuffer
PT_S- >ComputeSamples(PT_S- >InputBuffer);
}
else
return0; //
}
return0;
}
voidCSoundIn::ComputeSamples(SHORT*pt)
{
SYSTEMTIMEsystime;
GetSystemTime(&systime);
oldtim=systime.wMilliseconds;
inti;
intn=m_NbMaxSamples;
intfs=m_WaveInSampleRate;//11025;//500;//22050
for(i=0;i <n;i++)
{
if(i <n)
fr=pt*(1.0/exp(18*((n)/2.0-i)*((n)/2.0-i)/(n*n)));
else
fr=0;
fi=0;
}
FFT(fr,n,0);
Aver=1.0;
for(i=0;i <n/2;i++)
{
Pm=fr*fr+fi*fi;//计算功率谱
Am=sqrt(Pm)/10000;
if(i <n/4)
Aver+=Am;
Amave=(Amave+Am)/2;
}
Aver/=(n/4);
GetSystemTime(&systime);
newtim=systime.wMilliseconds;
newtim-=oldtim;
}
voidCSndView::OnTimer(UINTnIDEvent)
{
//......
//关键的绘图代码
for (x=0;x <(rcClient.right);x++) //displayInput
{
y=3*rcClient.bottom/4-(int)SoundIn.Amave;
dcMem.LineTo(x,y);
}
dcMem.MoveTo(rcClient.right,3*rcClient.bottom/4-(int)SoundIn.Aver);
dcMem.LineTo(rcClient.right-20,3*rcClient.bottom/4-(int)SoundIn.Aver);
//......
}
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