Computer program and method of determining a personalized head-related transfer function and interaural time difference function

A method of estimating an individualized head-related transfer function and an individualized interaural time difference function of a particular person in a computing device, the method comprising the steps of:

• a) obtaining a plurality of data sets (Li, Ri, Oi),
• each data set comprising a left audio sample (Li) originating from a left in-ear microphone and a right audio sample (Ri) originating from a right in-ear microphone and orientation information (Oi) originating from an orientation unit,
• the left audio sample and the right audio sample and the orientation information of each data set being simultaneously captured in an arrangement wherein:
• the left in-ear microphone being inserted in a left ear of the person, and
• the right in-ear microphone being inserted in a right ear of the person, and
• the orientation unit being mounted on or to a head of the person, and
• the person being located at a distance from a first loudspeaker, and
• the first loudspeaker being arranged for rendering an acoustic test signal comprising a plurality of audio test-fragments (Ci), and
• the person turning a head in a plurality of different orientations during the rendering of the acoustic test signal;
• b) storing the plurality of data sets (Li, Ri, Oi) in a memory;
• c) estimating a direction of the first loudspeaker with respect to the head of the person based on the plurality of captured data sets (Li, Ri, Oi) stored in the memory, for each data set (Li, Ri, Oi) stored in the memory;
• d) estimating the individualized ITDF of the person, based on the plurality of data sets (Li, Ri, Oi) stored in the memory and based on the directions estimated in step c);
• e) estimating the individualized HRTF of the person, based on the plurality of data sets (Li, Ri, Oi) stored in the memory and based on the directions estimated in step c).