Dans l'article, y a ca d'ailleurs:
"Evaluation for low frequencies
For low frequencies below 800 Hz the dimensions of the head (ear distance 21.5 cm, corresponding to an interaural time delay of 625 µs), are smaller than the half wavelength of the sound waves. So the auditory system can determine phase delays between both ears very precisely. Interaural level difference are very low in this frequency range, so that a precise evaluation of the input direction is nearly impossible on the basis of level differences. Signals with frequencies below 80 Hz can no more be localized, because the phase differences between both ears become too small for a directional evaluation.
[edit] Evaluation for high frequencies
For frequencies above 1600 Hz the dimensions of the head are bigger than the wavelengths of the sound waves. An unambiguous determination of the input direction based on interaural phases is not possible at these frequencies. However, the interaural level differences become bigger, and these level differences are evaluated by the auditory system.
In addition group delays between both ears can be evaluated (especially at higher frequencies). This means, if there is a sound onset, the delay of this onset between both ears can be used to determine the input direction of the corresponding sound source. This mechanism becomes especially important in reverberant environment. After a sound onset there is a short time frame, where the direct sound reaches the ears, but not yet the reflected sound. The auditory system uses this short time frame for evaluating the sound source direction, and keeps this detected direction as long as reflections and reverberation prevent an unambiguous direction estimation.
The mechanisms, as described above, are not able to differentiate between front and back. For determining sound input directions of the median plane additional cues have to be evaluated."
Après j'ai pas lu, toujours la flemme, dsl, il est 1h du mat', là 