We are proposing an interpolation technique for head related transfer functions (HRTFs). To derive the algorithm we study the dual problem where sound is emitted from the listener's ear and the generated soundfield is recorded along a circular array of microphones around the listener. The proposed interpolation algorithm is based on the observation that spatial bandwidth of the measured sound along the circular array is limited (for all practical purposes). Further, we observe that this spatial bandwidth increases linearly with the frequency of the emitted sound. The result of the analysis leads to the conclusion that the necessary angle between consecutive HRTFs is about 5 degrees in order to be able to reconstruct all HRTFs at 44.1 kHz temporal sampling frequency in the horizontal plane.

Authors: Ajdler, Thibaut; Faller, Christof; Sbaiz, Luciano; Vetterli, Martin
Affiliation: Ecole Polytechnique Federale de Lausanne
AES Convention: 118 (May 2005) Paper Number: 6327
Publication Date: May 1, 2005
Subject: Spatial Perception and Processing

Click to purchase paper as a non-member or you can login as an AES member to see more options.

No AES members have commented on this paper yet.

Subscribe to this discussion

To be notified of new comments on this paper you can subscribe to this RSS feed. Forum users should login to see additional options.

Start a discussion!

If you would like to start a discussion about this paper and are an AES member then you can login here:
Username:
Password:

If you are not yet an AES member and have something important to say about this paper then we urge you to join the AES today and make your voice heard. You can join online today by clicking here.