azimuth ([0-360]: speaker azimuth in a spherical coordinate system centered on the listener)
elevation ([-90-90]: speaker elevation in a spherical coordinate system centered on the listener)
distance ([1-50]: distance between speaker and listener)
orientation ([0-180]: 0 degree is the same with listener orientation)
attenuation ([0-1]: 1 maximum attenuation, 0 no attenuation)