Head Related Stereo
Stereo techniques using human interaural geometry as a model for the microphone set-up. Head related stereo is a generic term for a lot of different stereo techniques using both difference-in-time and difference-in-intensity stereo with microphone spacing and microphone off-axis attenuation related to the distance between the human ears and the shadow effect of the human head. Among the more standardized head related stereo techniques are ORTF stereo and DIN stereo.