ISSN:
1939-800X
Content:
In order to take into account spatial information into binaural recordings it is common practice to use so-called artificial heads. Disadvantageously artificial heads are inherently non- individual and bulky devices. Alternatively, the individual frequency-dependent directivity pattern of human head related transfer functions (HRTFs) can also be approximated by a microphone array with appropriate filters (Rasumow et al., 2011). Such a setup may be referred to as a virtual artificial head (VAH). The filters for the application of the VAH can be derived by minimizing a narrowband cost function including regularization constraints. As a first approach, it is appropriate to apply a least-squares cost function. The major advantage is its closed form solution (cf. Rasumow et al., 2011), whereas from a psychoacoustical point of view, it seems more reasonable to minimize the dB-error instead. The latter cost function must, however, be minimized iteratively. We propose a minimization procedure for and present first results regarding the subjective appraisal of binaural filters derived using both cost functions. Future work includes the extension of this work to binaural cost functions.
In:
Proceedings of Meetings on Acoustics, Lancaster, Pa. : Am. Inst. of Physics, 2007, 19(2013), Seite 055082, 1939-800X
In:
volume:19
In:
year:2013
In:
pages:055082
Language:
English
URL:
https://doi.org/10.1121/1.4800595
Author information:
Par, Steven van de 1966-
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