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- W4238149067 abstract "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." @default.
- W4238149067 created "2022-05-12" @default.
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- W4238149067 date "2013-01-01" @default.
- W4238149067 modified "2023-10-12" @default.
- W4238149067 title "Least squares versus non-linear cost functions for a vitual artificial head" @default.
- W4238149067 doi "https://doi.org/10.1121/1.4800595" @default.
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