Conference article: Personalization Support for Binaural Headphone Reproduction in Web Browsers

Tomorrow the 1st Web Audio Conference (WAC) will start. The closing talk of the first day will be “Personalization Support for Binaural Headphone Reproduction in Web Browsers” (full text) by Michele Geronazzo, Jari Kleimola, and Piotr Majdak. The mission of PADVA in promoting individualization support for spatial audio rendering will be brought to the attention of the international web audio community.

The future of 3D-media environments and broadcasting is constantly moving towards high spatial fidelity in sound field reproduction systems that are able to allow personal fruition of spatialized audio contents, leading to the next generation of portable audio devices. Audio technologies should be fully integrated with mobile devices and browsers, being able to provide an authentic individual listening experience.
This study propose a web framework with Web Audio API, giving support to the download of head-related transfer functions (HRTFs) associated with listener’s personal profile from a server and the synchronization between the listener’s devices. With each playback device and listener, the individual headphone equalization filters will be computed from headphone transfer functions (HpTFs) stored on the server. At server side, we propose to store the HRTFs and HpTFs in spatially oriented format for acoustics (SOFA). At client-side, we propose to convert the data to a new structure (WAV) ensuring a compatible solution with existing Web Audio API implementations. A binaural rendering implementation in JavaScript acting as a proof-of-concept reveals critical issues related to the native implementation in web browsers.

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