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Featured researches published by Joseph G. Tylka.


Journal of the Acoustical Society of America | 2017

Evaluation of techniques for navigation of higher-order ambisonics

Joseph G. Tylka; Edgar Y. Choueiri

Metrics are presented that assess spectral coloration and localization errors incurred by navigational techniques for higher-order ambisonics. Previous studies on the coloration induced by such navigational techniques have been largely qualitative, and the accuracy of previously-used localization models in this context is unclear. The presented metrics are applied in numerical simulations of navigation over a range of translation distances. Coloration is predicted using an auditory filter bank to compute the spectral energy differences between the test and reference signals in critical bands, and localization is predicted using a precedence-effect-based localization model. Coloration and localization errors are also measured through corresponding binaural-synthesis-based listening tests, wherein subjects are first asked to rate the induced coloration relative to reference and low-pass-filtered “anchor“ signals, and subsequently judge source position. Relationships are drawn between the metrics and the res...


173rd Meeting of Acoustical Society of America and 8th Forum Acusticum | 2017

Models for evaluating navigational techniques for higher-order ambisonics

Joseph G. Tylka; Edgar Y. Choueiri

Models are presented that predict perceived source localization and spectral coloration for the purpose of evaluating navigational techniques for higher-order ambisonics. Previous evaluations typically rely on binaural localization models, which conflate the effects of the navigational technique with those of the adopted ambisonics-to-binaural rendering approach. Moreover, studies on navigation-induced coloration have been largely qualitative. The presented models are applied directly to translated ambisonics impulse responses (i.e., before rendering to binaural) and are validated through listening experiments. Localization is predicted using an extension to a precedence-effect-based localization model. Coloration is predicted using a linear combination of spectral energies and notch-depths in a difference-spectrum between the test and reference signals. For two interpolation-based navigational techniques and a range of translation distances, localization and coloration are also measured subjectively thro...


Journal of The Audio Engineering Society | 2017

A Generalized Method for Fractional-Octave Smoothing of Transfer Functions that Preserves Log-Frequency Symmetry

Joseph G. Tylka; Braxton Boren; Edgar Y. Choueiri


Journal of The Audio Engineering Society | 2015

Comparison of Techniques for Binaural Navigation of Higher-Order Ambisonic Soundfields

Joseph G. Tylka; Edgar Y. Choueiri


Archive | 2017

Ambisonic navigation of sound fields from an array of microphones

Edgar Y. Choueiri; Joseph G. Tylka


Journal of The Audio Engineering Society | 2017

A Database of Head-Related Transfer Functions and Morphological Measurements

Rahulram Sridhar; Joseph G. Tylka; Edgar Y. Choueiri


Journal of The Audio Engineering Society | 2017

A Toolkit for Customizing the ambiX Ambisonics-to-Binaural Renderer

Joseph G. Tylka; Edgar Y. Choueiri


Archive | 2016

METHOD AND SYSTEM FOR PRODUCING LOW-NOISE ACOUSTICAL IMPULSE RESPONSES AT HIGH SAMPLING RATE

Edgar Y. Choueiri; Joseph G. Tylka; Rahulram Sridhar; Braxton Boren


Journal of The Audio Engineering Society | 2016

Metrics for Constant Directivity

Rahulram Sridhar; Joseph G. Tylka; Edgar Y. Choueiri


Audio Engineering Society Conference: 2016 AES International Conference on Audio for Virtual and Augmented Reality | 2016

Soundfield Navigation using an Array of Higher-Order Ambisonics Microphones

Joseph G. Tylka; Edgar Y. Choueiri

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