void GetSpectrum(){
float[] spectrum = new float[spectrumSize];
foreach(Instrument instrument in instruments){
AudioSource source = instrument.sound;
float[] partialSpectrum = new float[spectrumSize];
source.GetSpectrumData(partialSpectrum, 0, FFTWindow.Blackman);
for(int i=0;i<spectrumSize;i++){
spectrum[i]+=partialSpectrum[i]*instrument.getVolume();
}
}
GetSpec (spectrum);
}