Per discussion at Audio WG f2f 2013-03-26
While HRTF is well documented in the audio processing world, we felt it would be valuable for our spec to e.g point to some open models, to ease implementation.
E-mail thread on the group's list here:
Web Audio API issues have been migrated to Github.
Closing. See https://github.com/WebAudio/web-audio-api/issues for up to date list of issues for the Web Audio API.