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Alright, so I now have my audio library. Next on the agenda is a test program that tests reactions of users to vibroacoustic input. The test needs to present randomized stimuli to users, so that they can be tested for:
Since this is probably going to be within subjects (multiple stimuli) and also between subjects (same tests on multiple users) we’re going to want to be able to present the same sequence, so we’ll need to seed the random number generator so we get the same sequence.
Started the FLTK wrapper, and probably saved a good deal of time by going back to Erco’s FLTK page and associated videos
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#ifdef DXAUDIOINTERFACEDLL_EXPORTS #define DXAUDIOINTERFACEDLL_API __declspec(dllexport) #else #define DXAUDIOINTERFACEDLL_API __declspec(dllimport) #endif DXAUDIOINTERFACEDLL_API BasicAudio* getBasicAudio(void);
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FP 12:30 – 4:00
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int _tmain(int argc, _TCHAR* argv[])
{
BasicAudio *ba = new BasicAudio();
ba->init();
wprintf( L"\nReady to play mono WAV PCM file(s)...\n" );
WavSampleSound *singleSound = (WavSampleSound *)ba->createSound(L"music", L"Wavs\\MusicMono.wav", 0);
WavSampleSound *continuousSound = (WavSampleSound *)ba->createSound(L"heli", L"Wavs\\heli.wav", XAUDIO2_LOOP_INFINITE);
int keyIn;
printf("Type 'x' to quit\nC start continuous\nc stop continuous\nS start single\n");
bool doit = true;
int channelIndex = -1;
while(doit){
if(kbhit()){
keyIn = getch();
channelIndex = -1;
printf("key = %c\n", keyIn);
switch(keyIn){
case 'x' : doit = false;
break;
case 'C' : continuousSound->start(); // play sound
break;
case 'c' : continuousSound->stop(); // cease sound
break;
case 'S' : singleSound->start(); // play sound
break;
case 'w' :
continuousSound->setEmitterZ(continuousSound->getEmitterZ() + (FLOAT32)0.5);
break;
case 's' :
continuousSound->setEmitterZ(continuousSound->getEmitterZ() - (FLOAT32)0.5);
break;
case 'a' :
continuousSound->setEmitterX(continuousSound->getEmitterX() - (FLOAT32)0.5);
break;
case 'd' :
continuousSound->setEmitterX(continuousSound->getEmitterX() + (FLOAT32)0.5);
break;
case 'p':
ba->printMatrixCoefficients();
break;
case '0' : channelIndex = 0; break;
case '1' : channelIndex = 1; break;
case '2' : channelIndex = 2; break;
case '3' : channelIndex = 3; break;
case '4' : channelIndex = 4; break;
case '5' : channelIndex = 5; break;
case '6' : channelIndex = 6; break;
case '7' : channelIndex = 7; break;
}
if(channelIndex == -1){
IXAudio2SourceVoice* voice = continuousSound->getSourceVoice();
ba->play3DVoice(continuousSound->getEmitter(), voice);
}else{
printf("channel = %d\n", channelIndex);
IXAudio2SourceVoice* voice = continuousSound->getSourceVoice();
ba->playOnChannelVoice(voice, channelIndex);
}
}
ba->run(); // perform periodic sound engine tasks
Sleep(100);
}
wprintf( L"\nFinished playing\n" );
// All XAudio2 interfaces are released when the engine is destroyed, but being tidy
ba->destroy();
// printf("hit return to exit");
// getchar();
return 0;
}
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10:30 – 3:30 TIMEOFF
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viztales 
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